Westlake Corp NYSE:WLK Historical Prices

Below are the 4956 trading days of historical prices for WLK.

# Exchange Symbol Date Open High Low Close
4956 NYSE WLK Fri, Apr 19, 2024 149.08 150.96 148.02 150.76
4955 NYSE WLK Thu, Apr 18, 2024 152.37 152.37 148.21 148.94
4954 NYSE WLK Wed, Apr 17, 2024 151.39 152.33 148.08 148.59
4953 NYSE WLK Tue, Apr 16, 2024 152.04 152.04 148.36 150.17
4952 NYSE WLK Mon, Apr 15, 2024 154.61 154.94 151.85 153.27
4951 NYSE WLK Fri, Apr 12, 2024 154.86 155.47 152.91 153.46
4950 NYSE WLK Thu, Apr 11, 2024 157.70 157.86 155.15 155.51
4949 NYSE WLK Wed, Apr 10, 2024 158.96 161.13 155.46 157.49
4948 NYSE WLK Tue, Apr 9, 2024 159.48 162.64 157.97 162.06
4947 NYSE WLK Mon, Apr 8, 2024 158.92 160.08 156.87 158.15
4946 NYSE WLK Fri, Apr 5, 2024 156.79 160.94 156.29 160.47
4945 NYSE WLK Thu, Apr 4, 2024 159.02 160.00 157.02 157.14
4944 NYSE WLK Wed, Apr 3, 2024 155.87 158.18 154.65 157.04
4943 NYSE WLK Tue, Apr 2, 2024 153.82 154.16 151.81 153.48
4942 NYSE WLK Mon, Apr 1, 2024 152.91 154.46 151.25 154.26
4941 NYSE WLK Thu, Mar 28, 2024 152.59 153.14 151.67 152.80
4940 NYSE WLK Wed, Mar 27, 2024 151.00 152.49 150.77 152.35
4939 NYSE WLK Tue, Mar 26, 2024 150.67 151.00 148.96 150.15
4938 NYSE WLK Mon, Mar 25, 2024 150.30 151.49 149.71 149.99
4937 NYSE WLK Fri, Mar 22, 2024 150.67 150.88 149.08 150.32
4936 NYSE WLK Thu, Mar 21, 2024 151.47 151.60 149.93 150.40
4935 NYSE WLK Wed, Mar 20, 2024 144.73 151.21 144.73 150.42
4934 NYSE WLK Tue, Mar 19, 2024 143.68 146.16 142.84 145.93
4933 NYSE WLK Mon, Mar 18, 2024 148.14 148.14 143.63 143.74
4932 NYSE WLK Fri, Mar 15, 2024 141.68 147.81 141.68 146.79
4931 NYSE WLK Thu, Mar 14, 2024 143.81 143.89 141.37 142.51
4930 NYSE WLK Wed, Mar 13, 2024 142.20 144.50 142.13 144.17
4929 NYSE WLK Tue, Mar 12, 2024 142.28 142.28 140.45 141.42
4928 NYSE WLK Mon, Mar 11, 2024 141.33 141.98 139.70 141.80
4927 NYSE WLK Fri, Mar 8, 2024 143.46 143.46 141.29 141.68
4926 NYSE WLK Thu, Mar 7, 2024 142.00 143.75 141.05 142.60
4925 NYSE WLK Wed, Mar 6, 2024 141.76 141.76 139.69 141.17
4924 NYSE WLK Tue, Mar 5, 2024 138.97 141.57 138.97 139.96
4923 NYSE WLK Mon, Mar 4, 2024 137.61 141.38 136.36 140.09
4922 NYSE WLK Fri, Mar 1, 2024 138.60 139.38 136.60 137.38
4921 NYSE WLK Thu, Feb 29, 2024 136.39 138.80 135.55 138.71
4920 NYSE WLK Wed, Feb 28, 2024 135.82 138.04 135.18 135.89
4919 NYSE WLK Tue, Feb 27, 2024 137.74 138.04 136.63 136.80
4918 NYSE WLK Mon, Feb 26, 2024 135.97 138.62 135.01 136.92
4917 NYSE WLK Fri, Feb 23, 2024 141.29 141.46 136.16 136.79
4916 NYSE WLK Thu, Feb 22, 2024 136.34 140.68 134.70 140.58
4915 NYSE WLK Wed, Feb 21, 2024 133.62 136.33 132.22 135.48
4914 NYSE WLK Tue, Feb 20, 2024 126.29 140.34 118.64 132.81
4913 NYSE WLK Fri, Feb 16, 2024 143.85 145.98 142.99 144.15
4912 NYSE WLK Thu, Feb 15, 2024 141.82 144.46 140.32 144.25
4911 NYSE WLK Wed, Feb 14, 2024 141.00 142.17 139.69 141.19
4910 NYSE WLK Tue, Feb 13, 2024 140.94 140.94 137.63 139.73
4909 NYSE WLK Mon, Feb 12, 2024 142.29 144.82 142.10 143.94
4908 NYSE WLK Fri, Feb 9, 2024 142.51 143.51 141.03 142.12
4907 NYSE WLK Thu, Feb 8, 2024 141.23 143.45 140.03 142.80
4906 NYSE WLK Wed, Feb 7, 2024 139.79 141.64 139.03 140.95
4905 NYSE WLK Tue, Feb 6, 2024 138.65 140.66 137.98 139.36
4904 NYSE WLK Mon, Feb 5, 2024 136.11 139.25 134.93 138.21
4903 NYSE WLK Fri, Feb 2, 2024 137.80 139.16 136.12 138.54
4902 NYSE WLK Thu, Feb 1, 2024 139.13 140.12 137.75 139.83
4901 NYSE WLK Wed, Jan 31, 2024 141.92 142.00 138.32 138.35
4900 NYSE WLK Tue, Jan 30, 2024 140.32 142.11 140.08 141.66
4899 NYSE WLK Mon, Jan 29, 2024 141.35 141.35 139.42 141.18
4898 NYSE WLK Fri, Jan 26, 2024 140.50 141.47 138.70 141.19
4897 NYSE WLK Thu, Jan 25, 2024 138.78 139.80 137.66 138.38
4896 NYSE WLK Wed, Jan 24, 2024 140.23 141.91 135.91 136.64
4895 NYSE WLK Tue, Jan 23, 2024 140.89 142.62 139.98 140.47
4894 NYSE WLK Mon, Jan 22, 2024 138.44 139.84 138.19 139.74
4893 NYSE WLK Fri, Jan 19, 2024 136.98 138.54 135.78 138.48
4892 NYSE WLK Thu, Jan 18, 2024 134.80 136.78 133.62 136.27
4891 NYSE WLK Wed, Jan 17, 2024 132.51 133.88 132.51 133.51
4890 NYSE WLK Tue, Jan 16, 2024 133.14 135.26 132.20 135.02
4889 NYSE WLK Fri, Jan 12, 2024 136.97 137.28 134.03 134.61
4888 NYSE WLK Thu, Jan 11, 2024 135.37 135.94 133.70 135.04
4887 NYSE WLK Wed, Jan 10, 2024 134.28 135.44 133.59 135.42
4886 NYSE WLK Tue, Jan 9, 2024 136.75 137.43 134.73 135.07
4885 NYSE WLK Mon, Jan 8, 2024 137.87 138.27 137.01 138.07
4884 NYSE WLK Fri, Jan 5, 2024 135.91 139.17 135.76 138.30
4883 NYSE WLK Thu, Jan 4, 2024 138.39 139.56 136.48 136.79
4882 NYSE WLK Wed, Jan 3, 2024 138.96 139.91 137.01 138.23
4881 NYSE WLK Tue, Jan 2, 2024 140.33 141.37 139.79 140.75
4880 NYSE WLK Fri, Dec 29, 2023 140.46 141.12 139.36 139.96
4879 NYSE WLK Thu, Dec 28, 2023 141.67 142.34 140.76 140.87
4878 NYSE WLK Wed, Dec 27, 2023 142.91 143.35 141.86 142.45
4877 NYSE WLK Tue, Dec 26, 2023 141.80 143.61 141.35 142.69
4876 NYSE WLK Fri, Dec 22, 2023 141.00 142.99 140.72 141.09
4875 NYSE WLK Thu, Dec 21, 2023 142.55 142.55 140.06 140.80
4874 NYSE WLK Wed, Dec 20, 2023 141.55 143.49 140.42 140.44
4873 NYSE WLK Tue, Dec 19, 2023 141.14 142.58 141.06 142.51
4872 NYSE WLK Mon, Dec 18, 2023 141.74 141.74 139.79 140.37
4871 NYSE WLK Fri, Dec 15, 2023 139.43 140.83 138.92 140.10
4870 NYSE WLK Thu, Dec 14, 2023 134.58 140.68 134.58 139.77
4869 NYSE WLK Wed, Dec 13, 2023 126.49 132.70 125.87 132.54
4868 NYSE WLK Tue, Dec 12, 2023 129.62 130.27 126.84 126.90
4867 NYSE WLK Mon, Dec 11, 2023 128.95 130.79 128.62 129.62
4866 NYSE WLK Fri, Dec 8, 2023 129.87 131.16 128.80 129.25
4865 NYSE WLK Thu, Dec 7, 2023 130.07 130.52 128.72 129.54
4864 NYSE WLK Wed, Dec 6, 2023 131.06 132.59 129.35 129.52
4863 NYSE WLK Tue, Dec 5, 2023 131.62 131.75 128.92 130.09
4862 NYSE WLK Mon, Dec 4, 2023 131.92 134.48 131.47 132.38
4861 NYSE WLK Fri, Dec 1, 2023 128.15 132.79 127.92 132.57
4860 NYSE WLK Thu, Nov 30, 2023 128.75 129.68 127.64 128.39
4859 NYSE WLK Wed, Nov 29, 2023 128.16 129.91 128.16 128.77
4858 NYSE WLK Tue, Nov 28, 2023 128.57 129.00 127.23 127.41
4857 NYSE WLK Mon, Nov 27, 2023 128.28 128.96 127.33 128.61
4856 NYSE WLK Fri, Nov 24, 2023 128.49 130.16 128.33 129.42
4855 NYSE WLK Wed, Nov 22, 2023 128.85 129.18 127.81 128.37
4854 NYSE WLK Tue, Nov 21, 2023 129.71 131.23 129.12 129.14
4853 NYSE WLK Mon, Nov 20, 2023 129.70 131.07 128.60 129.91
4852 NYSE WLK Fri, Nov 17, 2023 129.27 130.02 127.84 129.49
4851 NYSE WLK Thu, Nov 16, 2023 128.28 128.75 126.34 128.14
4850 NYSE WLK Wed, Nov 15, 2023 129.67 131.38 127.88 128.49
4849 NYSE WLK Tue, Nov 14, 2023 125.22 129.83 125.21 129.76
4848 NYSE WLK Mon, Nov 13, 2023 121.01 122.77 120.26 122.46
4847 NYSE WLK Fri, Nov 10, 2023 119.79 122.13 119.35 121.98
4846 NYSE WLK Thu, Nov 9, 2023 120.75 120.75 118.86 118.96
4845 NYSE WLK Wed, Nov 8, 2023 120.85 121.11 119.50 119.79
4844 NYSE WLK Tue, Nov 7, 2023 119.35 121.15 118.73 120.35
4843 NYSE WLK Mon, Nov 6, 2023 123.22 123.22 120.42 121.35
4842 NYSE WLK Fri, Nov 3, 2023 120.13 124.27 120.13 123.65
4841 NYSE WLK Thu, Nov 2, 2023 121.85 124.67 118.25 120.99
4840 NYSE WLK Wed, Nov 1, 2023 115.08 116.36 113.95 116.20
4839 NYSE WLK Tue, Oct 31, 2023 115.67 115.86 114.05 115.36
4838 NYSE WLK Mon, Oct 30, 2023 115.99 115.99 113.57 115.15
4837 NYSE WLK Fri, Oct 27, 2023 116.14 116.14 113.77 114.48
4836 NYSE WLK Thu, Oct 26, 2023 113.38 116.95 113.38 115.93
4835 NYSE WLK Wed, Oct 25, 2023 114.55 114.93 112.77 113.19
4834 NYSE WLK Tue, Oct 24, 2023 114.63 116.20 114.54 115.29
4833 NYSE WLK Mon, Oct 23, 2023 114.43 116.19 113.60 114.14
4832 NYSE WLK Fri, Oct 20, 2023 118.23 118.23 115.16 115.57
4831 NYSE WLK Thu, Oct 19, 2023 120.32 120.89 117.38 117.99
4830 NYSE WLK Wed, Oct 18, 2023 120.87 122.39 119.89 120.73
4829 NYSE WLK Tue, Oct 17, 2023 122.44 125.37 122.42 125.11
4828 NYSE WLK Mon, Oct 16, 2023 122.81 124.24 122.10 123.15
4827 NYSE WLK Fri, Oct 13, 2023 122.93 123.54 120.79 121.09
4826 NYSE WLK Thu, Oct 12, 2023 125.27 125.27 120.80 121.89
4825 NYSE WLK Wed, Oct 11, 2023 126.50 127.58 124.16 125.13
4824 NYSE WLK Tue, Oct 10, 2023 124.64 127.82 124.49 126.89
4823 NYSE WLK Mon, Oct 9, 2023 123.66 124.54 122.44 123.84
4822 NYSE WLK Fri, Oct 6, 2023 122.80 124.87 122.33 124.02
4821 NYSE WLK Thu, Oct 5, 2023 123.30 124.37 121.35 123.16
4820 NYSE WLK Wed, Oct 4, 2023 122.96 124.20 121.00 123.81
4819 NYSE WLK Tue, Oct 3, 2023 123.11 125.00 122.30 123.08
4818 NYSE WLK Mon, Oct 2, 2023 123.96 124.54 122.16 122.86
4817 NYSE WLK Fri, Sep 29, 2023 126.18 126.79 124.07 124.67
4816 NYSE WLK Thu, Sep 28, 2023 123.78 125.74 122.87 125.00
4815 NYSE WLK Wed, Sep 27, 2023 123.00 124.80 122.10 123.93
4814 NYSE WLK Tue, Sep 26, 2023 120.72 123.19 120.72 121.83
4813 NYSE WLK Mon, Sep 25, 2023 121.08 123.01 120.99 122.82
4812 NYSE WLK Fri, Sep 22, 2023 121.58 122.42 120.28 121.00
4811 NYSE WLK Thu, Sep 21, 2023 122.92 122.92 120.83 121.03
4810 NYSE WLK Wed, Sep 20, 2023 126.81 127.85 124.03 124.18
4809 NYSE WLK Tue, Sep 19, 2023 127.58 128.07 124.84 125.70
4808 NYSE WLK Mon, Sep 18, 2023 127.36 128.91 126.89 127.13
4807 NYSE WLK Fri, Sep 15, 2023 126.98 127.46 125.45 127.27
4806 NYSE WLK Thu, Sep 14, 2023 125.94 127.85 125.36 127.73
4805 NYSE WLK Wed, Sep 13, 2023 124.09 124.62 122.50 123.90
4804 NYSE WLK Tue, Sep 12, 2023 123.69 125.44 123.69 124.48
4803 NYSE WLK Mon, Sep 11, 2023 126.32 127.12 123.97 124.21
4802 NYSE WLK Fri, Sep 8, 2023 125.11 126.50 124.44 124.93
4801 NYSE WLK Thu, Sep 7, 2023 126.72 127.63 123.34 124.69
4800 NYSE WLK Wed, Sep 6, 2023 127.36 129.20 125.70 127.60
4799 NYSE WLK Tue, Sep 5, 2023 130.57 131.28 127.66 127.72
4798 NYSE WLK Fri, Sep 1, 2023 132.35 133.83 131.39 132.70
4797 NYSE WLK Thu, Aug 31, 2023 132.91 132.91 130.61 130.98
4796 NYSE WLK Wed, Aug 30, 2023 134.01 135.05 133.06 133.19
4795 NYSE WLK Tue, Aug 29, 2023 132.06 134.18 131.25 134.06
4794 NYSE WLK Mon, Aug 28, 2023 131.88 133.25 131.40 131.91
4793 NYSE WLK Fri, Aug 25, 2023 131.00 131.74 129.13 131.22
4792 NYSE WLK Thu, Aug 24, 2023 128.39 130.70 128.39 129.71
4791 NYSE WLK Wed, Aug 23, 2023 130.65 131.22 128.71 129.43
4790 NYSE WLK Tue, Aug 22, 2023 131.54 132.79 129.64 130.50
4789 NYSE WLK Mon, Aug 21, 2023 131.30 132.42 130.60 131.10
4788 NYSE WLK Fri, Aug 18, 2023 129.61 131.65 128.72 130.36
4787 NYSE WLK Thu, Aug 17, 2023 130.81 133.53 130.80 131.03
4786 NYSE WLK Wed, Aug 16, 2023 130.00 131.68 129.58 129.94
4785 NYSE WLK Tue, Aug 15, 2023 132.22 132.32 129.58 130.08
4784 NYSE WLK Mon, Aug 14, 2023 132.11 134.57 130.77 134.11
4783 NYSE WLK Fri, Aug 11, 2023 131.88 133.11 130.96 132.18
4782 NYSE WLK Thu, Aug 10, 2023 134.05 134.37 130.84 132.16
4781 NYSE WLK Wed, Aug 9, 2023 132.69 134.65 131.62 132.77
4780 NYSE WLK Tue, Aug 8, 2023 129.50 132.92 128.60 132.59
4779 NYSE WLK Mon, Aug 7, 2023 131.94 134.24 131.20 133.95
4778 NYSE WLK Fri, Aug 4, 2023 132.47 134.11 130.93 131.08
4777 NYSE WLK Thu, Aug 3, 2023 133.54 135.89 132.46 132.53
4776 NYSE WLK Wed, Aug 2, 2023 134.16 136.81 134.04 134.39
4775 NYSE WLK Tue, Aug 1, 2023 136.21 137.49 135.82 136.81
4774 NYSE WLK Mon, Jul 31, 2023 137.23 137.94 135.88 137.50
4773 NYSE WLK Fri, Jul 28, 2023 136.25 138.39 135.94 137.08
4772 NYSE WLK Thu, Jul 27, 2023 133.44 137.01 132.77 134.81
4771 NYSE WLK Wed, Jul 26, 2023 131.36 133.98 131.14 133.45
4770 NYSE WLK Tue, Jul 25, 2023 129.44 134.12 129.44 131.66
4769 NYSE WLK Mon, Jul 24, 2023 130.00 131.52 128.43 128.59
4768 NYSE WLK Fri, Jul 21, 2023 127.89 129.94 126.89 129.88
4767 NYSE WLK Thu, Jul 20, 2023 129.20 129.48 127.45 128.37
4766 NYSE WLK Wed, Jul 19, 2023 127.65 128.26 126.59 127.89
4765 NYSE WLK Tue, Jul 18, 2023 125.50 128.26 125.50 127.78
4764 NYSE WLK Mon, Jul 17, 2023 125.00 125.45 123.05 125.00
4763 NYSE WLK Fri, Jul 14, 2023 129.02 129.02 124.84 125.77
4762 NYSE WLK Thu, Jul 13, 2023 129.50 130.39 128.24 129.49
4761 NYSE WLK Wed, Jul 12, 2023 126.17 129.54 126.14 129.22
4760 NYSE WLK Tue, Jul 11, 2023 122.58 124.45 122.52 123.82
4759 NYSE WLK Mon, Jul 10, 2023 119.78 122.44 119.78 121.49
4758 NYSE WLK Fri, Jul 7, 2023 116.94 121.28 116.80 120.55
4757 NYSE WLK Thu, Jul 6, 2023 115.64 117.23 114.23 116.44
4756 NYSE WLK Wed, Jul 5, 2023 118.56 119.49 117.41 117.45
4755 NYSE WLK Mon, Jul 3, 2023 119.73 121.28 119.51 120.38
4754 NYSE WLK Fri, Jun 30, 2023 119.83 119.92 118.06 119.47
4753 NYSE WLK Thu, Jun 29, 2023 116.47 118.92 116.15 118.86
4752 NYSE WLK Wed, Jun 28, 2023 116.60 117.30 115.33 116.70
4751 NYSE WLK Tue, Jun 27, 2023 113.95 116.89 112.99 116.72
4750 NYSE WLK Mon, Jun 26, 2023 111.10 114.77 111.10 114.50
4749 NYSE WLK Fri, Jun 23, 2023 108.87 113.05 107.34 112.80
4748 NYSE WLK Thu, Jun 22, 2023 109.44 110.84 107.86 110.31
4747 NYSE WLK Wed, Jun 21, 2023 110.69 113.17 109.67 111.71
4746 NYSE WLK Tue, Jun 20, 2023 112.02 112.63 109.18 111.16
4745 NYSE WLK Fri, Jun 16, 2023 115.85 115.85 113.46 114.70
4744 NYSE WLK Thu, Jun 15, 2023 113.10 115.89 112.88 115.68
4743 NYSE WLK Wed, Jun 14, 2023 116.71 117.87 113.12 113.69
4742 NYSE WLK Tue, Jun 13, 2023 113.95 116.66 113.61 116.02
4741 NYSE WLK Mon, Jun 12, 2023 111.03 112.70 110.34 112.39
4740 NYSE WLK Fri, Jun 9, 2023 112.69 112.69 110.54 111.40
4739 NYSE WLK Thu, Jun 8, 2023 116.21 116.21 111.27 112.41
4738 NYSE WLK Wed, Jun 7, 2023 113.30 116.09 112.56 116.06
4737 NYSE WLK Tue, Jun 6, 2023 110.29 113.17 110.29 112.80
4736 NYSE WLK Mon, Jun 5, 2023 112.43 112.31 109.67 113.01
4735 NYSE WLK Fri, Jun 2, 2023 108.00 114.05 107.74 113.01
4734 NYSE WLK Thu, Jun 1, 2023 104.20 105.98 103.28 105.28
4733 NYSE WLK Wed, May 31, 2023 107.54 107.81 103.28 103.95
4732 NYSE WLK Tue, May 30, 2023 111.58 111.58 108.11 108.44
4731 NYSE WLK Fri, May 26, 2023 112.47 113.15 111.16 111.88
4730 NYSE WLK Thu, May 25, 2023 112.70 113.64 109.70 111.63
4729 NYSE WLK Wed, May 24, 2023 115.23 115.27 113.28 113.70
4728 NYSE WLK Tue, May 23, 2023 115.62 117.42 114.92 115.76
4727 NYSE WLK Mon, May 22, 2023 116.19 117.30 115.75 116.17
4726 NYSE WLK Fri, May 19, 2023 118.11 118.89 116.24 115.94
4725 NYSE WLK Thu, May 18, 2023 115.27 117.32 114.41 117.13
4724 NYSE WLK Wed, May 17, 2023 114.08 116.53 113.30 115.94
4723 NYSE WLK Tue, May 16, 2023 114.59 114.59 113.01 113.19
4722 NYSE WLK Mon, May 15, 2023 115.34 116.14 114.20 115.29
4721 NYSE WLK Fri, May 12, 2023 114.00 114.77 113.12 114.47
4720 NYSE WLK Thu, May 11, 2023 113.82 115.03 112.62 113.40
4719 NYSE WLK Wed, May 10, 2023 119.71 119.95 114.11 115.34
4718 NYSE WLK Tue, May 9, 2023 116.35 118.86 116.15 118.14
4717 NYSE WLK Mon, May 8, 2023 122.54 122.87 118.17 118.63
4716 NYSE WLK Fri, May 5, 2023 120.61 122.98 118.12 121.29
4715 NYSE WLK Thu, May 4, 2023 116.88 121.86 112.33 116.82
4714 NYSE WLK Wed, May 3, 2023 112.76 115.12 112.03 112.23
4713 NYSE WLK Tue, May 2, 2023 111.17 112.51 109.12 112.31
4712 NYSE WLK Mon, May 1, 2023 113.19 113.90 112.33 113.37
4711 NYSE WLK Fri, Apr 28, 2023 111.37 113.83 111.10 113.78
4710 NYSE WLK Thu, Apr 27, 2023 109.94 111.38 108.92 111.29
4709 NYSE WLK Wed, Apr 26, 2023 110.01 111.04 108.75 109.01
4708 NYSE WLK Tue, Apr 25, 2023 113.67 114.05 110.37 110.54
4707 NYSE WLK Mon, Apr 24, 2023 115.03 115.83 114.16 115.80
4706 NYSE WLK Fri, Apr 21, 2023 115.00 115.44 113.42 114.32
4705 NYSE WLK Thu, Apr 20, 2023 116.90 117.38 115.08 115.78
4704 NYSE WLK Wed, Apr 19, 2023 118.14 118.68 116.71 118.23
4703 NYSE WLK Tue, Apr 18, 2023 118.95 119.45 117.28 118.85
4702 NYSE WLK Mon, Apr 17, 2023 116.90 118.50 116.74 118.31
4701 NYSE WLK Fri, Apr 14, 2023 119.23 120.06 116.69 118.12
4700 NYSE WLK Thu, Apr 13, 2023 116.88 119.65 116.09 118.92
4699 NYSE WLK Wed, Apr 12, 2023 119.19 119.90 117.44 117.55
4698 NYSE WLK Tue, Apr 11, 2023 115.80 116.87 115.40 115.88
4697 NYSE WLK Mon, Apr 10, 2023 113.94 116.37 113.45 115.51
4696 NYSE WLK Thu, Apr 6, 2023 113.70 113.81 111.56 112.94
4695 NYSE WLK Wed, Apr 5, 2023 112.22 114.81 111.65 114.59
4694 NYSE WLK Tue, Apr 4, 2023 116.14 116.40 113.40 113.88
4693 NYSE WLK Mon, Apr 3, 2023 117.00 119.40 116.12 117.40
4692 NYSE WLK Fri, Mar 31, 2023 114.31 116.46 113.81 115.98
4691 NYSE WLK Thu, Mar 30, 2023 115.10 115.53 112.95 113.67
4690 NYSE WLK Wed, Mar 29, 2023 115.28 115.76 113.11 113.66
4689 NYSE WLK Tue, Mar 28, 2023 110.44 113.62 110.25 113.36
4688 NYSE WLK Mon, Mar 27, 2023 110.00 111.91 108.97 110.60
4687 NYSE WLK Fri, Mar 24, 2023 106.08 108.81 105.49 108.69
4686 NYSE WLK Thu, Mar 23, 2023 107.18 109.74 106.29 107.11
4685 NYSE WLK Wed, Mar 22, 2023 109.78 110.32 106.58 106.60
4684 NYSE WLK Tue, Mar 21, 2023 110.95 111.03 109.12 109.82
4683 NYSE WLK Mon, Mar 20, 2023 106.17 108.69 106.00 107.52
4682 NYSE WLK Fri, Mar 17, 2023 106.10 106.82 104.30 104.53
4681 NYSE WLK Thu, Mar 16, 2023 104.53 107.43 103.09 107.15
4680 NYSE WLK Wed, Mar 15, 2023 106.03 106.76 103.77 105.94
4679 NYSE WLK Tue, Mar 14, 2023 110.94 112.45 108.02 109.50
4678 NYSE WLK Mon, Mar 13, 2023 104.62 110.45 102.64 108.53
4677 NYSE WLK Fri, Mar 10, 2023 113.11 113.48 109.52 110.43
4676 NYSE WLK Thu, Mar 9, 2023 118.82 119.14 113.43 113.72
4675 NYSE WLK Wed, Mar 8, 2023 117.82 119.00 117.00 118.48
4674 NYSE WLK Tue, Mar 7, 2023 120.70 121.00 117.11 117.58
4673 NYSE WLK Mon, Mar 6, 2023 124.13 124.25 119.80 120.65
4672 NYSE WLK Fri, Mar 3, 2023 123.05 125.09 121.91 124.57
4671 NYSE WLK Thu, Mar 2, 2023 120.35 122.90 119.50 122.59
4670 NYSE WLK Wed, Mar 1, 2023 119.28 122.40 119.28 121.70
4669 NYSE WLK Tue, Feb 28, 2023 120.07 121.27 118.89 119.14
4668 NYSE WLK Mon, Feb 27, 2023 121.11 121.95 119.89 120.36
4667 NYSE WLK Fri, Feb 24, 2023 118.58 121.49 117.09 121.37
4666 NYSE WLK Thu, Feb 23, 2023 120.00 121.47 118.08 120.06
4665 NYSE WLK Wed, Feb 22, 2023 115.98 119.12 114.84 118.61
4664 NYSE WLK Tue, Feb 21, 2023 120.91 121.50 113.52 114.62
4663 NYSE WLK Fri, Feb 17, 2023 123.18 123.81 121.49 122.51
4662 NYSE WLK Thu, Feb 16, 2023 121.71 125.31 120.51 123.95
4661 NYSE WLK Wed, Feb 15, 2023 121.10 123.75 121.10 123.55
4660 NYSE WLK Tue, Feb 14, 2023 124.27 124.71 122.33 124.19
4659 NYSE WLK Mon, Feb 13, 2023 122.85 125.32 122.41 124.98
4658 NYSE WLK Fri, Feb 10, 2023 120.45 122.87 120.23 122.76
4657 NYSE WLK Thu, Feb 9, 2023 122.82 123.84 120.12 120.61
4656 NYSE WLK Wed, Feb 8, 2023 122.51 123.21 121.13 121.51
4655 NYSE WLK Tue, Feb 7, 2023 121.95 123.97 121.36 123.64
4654 NYSE WLK Mon, Feb 6, 2023 124.11 124.58 121.88 122.86
4653 NYSE WLK Fri, Feb 3, 2023 123.74 126.32 123.21 124.94
4652 NYSE WLK Thu, Feb 2, 2023 124.94 126.08 123.49 124.58
4651 NYSE WLK Wed, Feb 1, 2023 122.17 125.25 121.48 124.15
4650 NYSE WLK Tue, Jan 31, 2023 120.29 122.75 119.46 122.75
4649 NYSE WLK Mon, Jan 30, 2023 119.52 121.55 119.09 119.45
4648 NYSE WLK Fri, Jan 27, 2023 116.83 121.44 116.64 120.69
4647 NYSE WLK Thu, Jan 26, 2023 115.94 117.41 114.17 117.16
4646 NYSE WLK Wed, Jan 25, 2023 112.39 116.33 112.26 116.25
4645 NYSE WLK Tue, Jan 24, 2023 113.30 114.60 112.97 114.12
4644 NYSE WLK Mon, Jan 23, 2023 114.56 115.46 113.43 114.79
4643 NYSE WLK Fri, Jan 20, 2023 110.93 114.15 109.92 113.91
4642 NYSE WLK Thu, Jan 19, 2023 110.37 111.11 107.92 110.56
4641 NYSE WLK Wed, Jan 18, 2023 113.72 115.18 111.33 111.43
4640 NYSE WLK Tue, Jan 17, 2023 113.92 114.18 112.12 112.25
4639 NYSE WLK Fri, Jan 13, 2023 113.98 114.51 112.78 114.39
4638 NYSE WLK Thu, Jan 12, 2023 112.26 114.54 111.10 114.47
4637 NYSE WLK Wed, Jan 11, 2023 112.42 112.58 110.92 111.76
4636 NYSE WLK Tue, Jan 10, 2023 108.51 110.81 108.45 110.77
4635 NYSE WLK Mon, Jan 9, 2023 108.60 110.67 107.73 109.14
4634 NYSE WLK Fri, Jan 6, 2023 104.49 108.45 104.24 108.40
4633 NYSE WLK Thu, Jan 5, 2023 99.49 102.20 98.19 101.98
4632 NYSE WLK Wed, Jan 4, 2023 99.76 100.43 98.05 100.16
4631 NYSE WLK Tue, Jan 3, 2023 102.75 103.65 98.21 99.03
4630 NYSE WLK Fri, Dec 30, 2022 102.33 102.79 101.49 102.54
4629 NYSE WLK Thu, Dec 29, 2022 102.76 103.90 101.89 103.03
4628 NYSE WLK Wed, Dec 28, 2022 106.17 106.29 102.85 103.27
4627 NYSE WLK Tue, Dec 27, 2022 105.25 106.00 105.07 105.79
4626 NYSE WLK Fri, Dec 23, 2022 103.45 105.33 102.61 105.10
4625 NYSE WLK Thu, Dec 22, 2022 103.57 103.59 101.14 103.35
4624 NYSE WLK Wed, Dec 21, 2022 103.51 106.00 103.51 105.13
4623 NYSE WLK Tue, Dec 20, 2022 103.54 105.02 103.21 103.40
4622 NYSE WLK Mon, Dec 19, 2022 103.69 105.41 102.13 103.21
4621 NYSE WLK Fri, Dec 16, 2022 104.02 104.60 101.44 103.35
4620 NYSE WLK Thu, Dec 15, 2022 107.61 108.66 104.39 105.04
4619 NYSE WLK Wed, Dec 14, 2022 110.37 111.95 109.28 110.17
4618 NYSE WLK Tue, Dec 13, 2022 112.06 112.73 109.38 110.62
4617 NYSE WLK Mon, Dec 12, 2022 106.55 108.44 105.57 108.40
4616 NYSE WLK Fri, Dec 9, 2022 106.50 108.34 106.50 106.66
4615 NYSE WLK Thu, Dec 8, 2022 108.17 108.52 106.70 106.94
4614 NYSE WLK Wed, Dec 7, 2022 105.74 107.49 105.74 106.66
4613 NYSE WLK Tue, Dec 6, 2022 107.45 108.22 105.26 106.35
4612 NYSE WLK Mon, Dec 5, 2022 107.75 108.71 106.97 107.36
4611 NYSE WLK Fri, Dec 2, 2022 107.06 110.40 107.06 108.64
4610 NYSE WLK Thu, Dec 1, 2022 108.90 110.02 107.07 107.95
4609 NYSE WLK Wed, Nov 30, 2022 107.34 108.31 104.00 107.65
4608 NYSE WLK Tue, Nov 29, 2022 103.03 107.22 103.03 107.17
4607 NYSE WLK Mon, Nov 28, 2022 104.66 105.09 101.79 102.24
4606 NYSE WLK Fri, Nov 25, 2022 106.33 107.24 105.98 106.40
4605 NYSE WLK Wed, Nov 23, 2022 105.94 106.82 105.51 106.30
4604 NYSE WLK Tue, Nov 22, 2022 104.25 107.25 104.25 106.31
4603 NYSE WLK Mon, Nov 21, 2022 102.74 103.86 101.05 102.83
4602 NYSE WLK Fri, Nov 18, 2022 105.49 105.52 103.45 104.43
4601 NYSE WLK Thu, Nov 17, 2022 103.19 104.45 102.33 104.25
4600 NYSE WLK Wed, Nov 16, 2022 107.07 107.56 104.40 105.44
4599 NYSE WLK Tue, Nov 15, 2022 110.24 111.59 107.98 107.98
4598 NYSE WLK Mon, Nov 14, 2022 111.93 113.39 110.91 110.91
4597 NYSE WLK Fri, Nov 11, 2022 108.21 113.51 106.88 113.37
4596 NYSE WLK Thu, Nov 10, 2022 101.13 106.56 99.92 106.15
4595 NYSE WLK Wed, Nov 9, 2022 100.53 101.12 96.71 97.02
4594 NYSE WLK Tue, Nov 8, 2022 100.84 102.33 99.64 101.31
4593 NYSE WLK Mon, Nov 7, 2022 99.54 100.72 97.90 99.73
4592 NYSE WLK Fri, Nov 4, 2022 94.17 100.07 93.75 100.01
4591 NYSE WLK Thu, Nov 3, 2022 89.94 94.82 87.93 92.64
4590 NYSE WLK Wed, Nov 2, 2022 97.54 99.72 95.57 96.07
4589 NYSE WLK Tue, Nov 1, 2022 98.28 98.92 96.69 98.10
4588 NYSE WLK Mon, Oct 31, 2022 98.09 98.69 96.34 96.65
4587 NYSE WLK Fri, Oct 28, 2022 96.57 98.54 95.78 98.10
4586 NYSE WLK Thu, Oct 27, 2022 98.58 100.08 98.01 98.29
4585 NYSE WLK Wed, Oct 26, 2022 98.43 99.62 96.93 97.93
4584 NYSE WLK Tue, Oct 25, 2022 94.39 97.63 93.69 97.41
4583 NYSE WLK Mon, Oct 24, 2022 94.85 95.35 93.43 94.74
4582 NYSE WLK Fri, Oct 21, 2022 90.10 94.49 89.91 94.05
4581 NYSE WLK Thu, Oct 20, 2022 92.09 94.48 89.33 89.88
4580 NYSE WLK Wed, Oct 19, 2022 93.16 94.41 91.80 91.96
4579 NYSE WLK Tue, Oct 18, 2022 94.03 95.10 92.76 93.87
4578 NYSE WLK Mon, Oct 17, 2022 92.01 94.93 92.00 92.67
4577 NYSE WLK Fri, Oct 14, 2022 97.61 97.61 92.30 92.52
4576 NYSE WLK Thu, Oct 13, 2022 85.81 91.54 85.37 90.50
4575 NYSE WLK Wed, Oct 12, 2022 87.87 88.99 86.97 88.17
4574 NYSE WLK Tue, Oct 11, 2022 88.13 89.47 86.50 88.00
4573 NYSE WLK Mon, Oct 10, 2022 89.52 90.49 88.30 89.28
4572 NYSE WLK Fri, Oct 7, 2022 89.23 90.73 88.37 88.85
4571 NYSE WLK Thu, Oct 6, 2022 90.26 92.10 89.80 90.21
4570 NYSE WLK Wed, Oct 5, 2022 90.73 91.74 89.87 90.90
4569 NYSE WLK Tue, Oct 4, 2022 89.95 93.10 89.95 92.83
4568 NYSE WLK Mon, Oct 3, 2022 88.85 91.06 87.66 90.31
4567 NYSE WLK Fri, Sep 30, 2022 85.30 87.46 84.54 86.88
4566 NYSE WLK Thu, Sep 29, 2022 84.51 85.41 82.82 85.27
4565 NYSE WLK Wed, Sep 28, 2022 83.29 86.24 83.12 85.78
4564 NYSE WLK Tue, Sep 27, 2022 83.21 84.49 82.41 82.89
4563 NYSE WLK Mon, Sep 26, 2022 82.30 85.56 81.36 81.75
4562 NYSE WLK Fri, Sep 23, 2022 83.16 83.85 81.29 82.95
4561 NYSE WLK Thu, Sep 22, 2022 87.00 87.62 84.65 85.75
4560 NYSE WLK Wed, Sep 21, 2022 89.30 90.51 86.56 86.56
4559 NYSE WLK Tue, Sep 20, 2022 89.94 89.94 85.96 89.25
4558 NYSE WLK Mon, Sep 19, 2022 88.71 92.74 88.30 92.29
4557 NYSE WLK Fri, Sep 16, 2022 92.24 92.42 90.04 90.85
4556 NYSE WLK Thu, Sep 15, 2022 91.31 94.77 91.31 93.89
4555 NYSE WLK Wed, Sep 14, 2022 93.50 93.71 89.78 91.89
4554 NYSE WLK Tue, Sep 13, 2022 98.18 99.12 93.88 93.97
4553 NYSE WLK Mon, Sep 12, 2022 101.41 102.94 100.69 101.44
4552 NYSE WLK Fri, Sep 9, 2022 99.81 100.73 99.29 100.22
4551 NYSE WLK Thu, Sep 8, 2022 96.38 98.14 95.30 97.92
4550 NYSE WLK Wed, Sep 7, 2022 95.00 97.90 94.33 97.49
4549 NYSE WLK Tue, Sep 6, 2022 97.26 97.89 95.07 95.68
4548 NYSE WLK Fri, Sep 2, 2022 97.78 98.23 95.16 95.76
4547 NYSE WLK Thu, Sep 1, 2022 97.27 97.27 94.71 96.24
4546 NYSE WLK Wed, Aug 31, 2022 99.82 100.31 98.12 98.63
4545 NYSE WLK Tue, Aug 30, 2022 102.50 102.50 98.73 100.48
4544 NYSE WLK Mon, Aug 29, 2022 104.38 104.38 101.39 102.68
4543 NYSE WLK Fri, Aug 26, 2022 109.93 110.00 105.55 106.97
4542 NYSE WLK Thu, Aug 25, 2022 105.59 110.30 105.59 110.02
4541 NYSE WLK Wed, Aug 24, 2022 105.73 106.90 104.29 104.99
4540 NYSE WLK Tue, Aug 23, 2022 103.74 107.16 103.74 106.47
4539 NYSE WLK Mon, Aug 22, 2022 102.94 103.88 101.46 103.02
4538 NYSE WLK Fri, Aug 19, 2022 107.49 107.49 104.60 104.65
4537 NYSE WLK Thu, Aug 18, 2022 106.37 108.42 106.37 108.04
4536 NYSE WLK Wed, Aug 17, 2022 106.69 107.10 104.91 105.94
4535 NYSE WLK Tue, Aug 16, 2022 104.65 106.42 104.04 106.28
4534 NYSE WLK Mon, Aug 15, 2022 102.96 105.04 101.64 104.70
4533 NYSE WLK Fri, Aug 12, 2022 103.59 104.39 103.15 103.66
4532 NYSE WLK Thu, Aug 11, 2022 100.62 104.69 100.53 103.22
4531 NYSE WLK Wed, Aug 10, 2022 98.55 100.70 98.14 99.56
4530 NYSE WLK Tue, Aug 9, 2022 96.19 96.76 94.04 96.70
4529 NYSE WLK Mon, Aug 8, 2022 95.38 97.47 95.38 96.18
4528 NYSE WLK Fri, Aug 5, 2022 91.99 94.45 91.87 94.37
4527 NYSE WLK Thu, Aug 4, 2022 94.33 95.43 92.85 92.96
4526 NYSE WLK Wed, Aug 3, 2022 95.85 96.50 94.01 94.46
4525 NYSE WLK Tue, Aug 2, 2022 98.25 100.80 92.63 94.44
4524 NYSE WLK Mon, Aug 1, 2022 96.00 97.27 94.77 97.15
4523 NYSE WLK Fri, Jul 29, 2022 95.48 97.77 94.23 97.34
4522 NYSE WLK Thu, Jul 28, 2022 95.00 96.12 93.22 94.00
4521 NYSE WLK Wed, Jul 27, 2022 91.83 94.91 91.49 94.56
4520 NYSE WLK Tue, Jul 26, 2022 91.93 92.99 91.18 91.48
4519 NYSE WLK Mon, Jul 25, 2022 91.59 93.01 90.70 92.19
4518 NYSE WLK Fri, Jul 22, 2022 92.94 93.64 91.23 91.81
4517 NYSE WLK Thu, Jul 21, 2022 92.70 92.90 91.03 92.44
4516 NYSE WLK Wed, Jul 20, 2022 93.88 94.63 92.39 94.41
4515 NYSE WLK Tue, Jul 19, 2022 93.82 96.11 92.91 94.72
4514 NYSE WLK Mon, Jul 18, 2022 93.91 95.01 91.86 92.30
4513 NYSE WLK Fri, Jul 15, 2022 92.75 92.95 90.89 92.03
4512 NYSE WLK Thu, Jul 14, 2022 91.33 92.23 89.00 91.00
4511 NYSE WLK Wed, Jul 13, 2022 93.61 94.07 91.59 93.25
4510 NYSE WLK Tue, Jul 12, 2022 95.68 96.49 94.66 95.25
4509 NYSE WLK Mon, Jul 11, 2022 94.99 97.53 94.72 96.54
4508 NYSE WLK Fri, Jul 8, 2022 98.77 98.77 95.92 97.02
4507 NYSE WLK Thu, Jul 7, 2022 96.53 98.92 96.13 97.91
4506 NYSE WLK Wed, Jul 6, 2022 94.09 95.93 91.77 95.21
4505 NYSE WLK Tue, Jul 5, 2022 95.50 95.50 91.99 94.52
4504 NYSE WLK Fri, Jul 1, 2022 96.96 100.03 94.69 98.86
4503 NYSE WLK Thu, Jun 30, 2022 96.48 99.40 95.93 98.02
4502 NYSE WLK Wed, Jun 29, 2022 99.20 99.72 96.22 97.87
4501 NYSE WLK Tue, Jun 28, 2022 100.13 102.00 97.68 98.94
4500 NYSE WLK Mon, Jun 27, 2022 98.10 100.48 97.34 98.99
4499 NYSE WLK Fri, Jun 24, 2022 95.99 100.16 94.74 99.60
4498 NYSE WLK Thu, Jun 23, 2022 95.93 96.25 91.88 94.83
4497 NYSE WLK Wed, Jun 22, 2022 95.49 97.01 94.58 96.32
4496 NYSE WLK Tue, Jun 21, 2022 101.27 102.62 98.79 98.89
4495 NYSE WLK Fri, Jun 17, 2022 99.54 100.24 96.94 99.37
4494 NYSE WLK Thu, Jun 16, 2022 104.26 104.60 100.51 100.91
4493 NYSE WLK Wed, Jun 15, 2022 115.18 115.42 104.22 107.29
4492 NYSE WLK Tue, Jun 14, 2022 113.97 116.67 112.79 114.37
4491 NYSE WLK Mon, Jun 13, 2022 119.51 119.60 115.10 115.43
4490 NYSE WLK Fri, Jun 10, 2022 127.85 127.85 121.81 122.65
4489 NYSE WLK Thu, Jun 9, 2022 130.95 132.64 129.50 130.44
4488 NYSE WLK Wed, Jun 8, 2022 133.06 134.56 131.23 131.92
4487 NYSE WLK Tue, Jun 7, 2022 130.44 134.27 129.65 133.94
4486 NYSE WLK Mon, Jun 6, 2022 133.05 133.46 130.13 132.56
4485 NYSE WLK Fri, Jun 3, 2022 130.32 131.55 128.17 130.73
4484 NYSE WLK Thu, Jun 2, 2022 135.44 136.55 132.23 133.38
4483 NYSE WLK Wed, Jun 1, 2022 132.43 135.73 131.50 135.23
4482 NYSE WLK Tue, May 31, 2022 132.76 134.46 131.17 132.11
4481 NYSE WLK Fri, May 27, 2022 129.61 132.13 127.98 132.00
4480 NYSE WLK Thu, May 26, 2022 126.29 129.43 126.29 128.45
4479 NYSE WLK Wed, May 25, 2022 124.00 127.41 123.54 126.39
4478 NYSE WLK Tue, May 24, 2022 125.68 126.11 122.19 124.19
4477 NYSE WLK Mon, May 23, 2022 127.26 128.44 124.09 125.87
4476 NYSE WLK Fri, May 20, 2022 130.54 131.20 122.71 126.21
4475 NYSE WLK Thu, May 19, 2022 129.35 131.72 127.71 129.03
4474 NYSE WLK Wed, May 18, 2022 135.81 136.60 129.24 131.04
4473 NYSE WLK Tue, May 17, 2022 135.00 137.14 133.49 136.29
4472 NYSE WLK Mon, May 16, 2022 130.65 133.40 128.64 131.87
4471 NYSE WLK Fri, May 13, 2022 129.60 131.68 129.10 130.55
4470 NYSE WLK Thu, May 12, 2022 127.83 130.23 123.40 127.19
4469 NYSE WLK Wed, May 11, 2022 128.22 132.98 127.54 129.97
4468 NYSE WLK Tue, May 10, 2022 134.08 134.50 124.92 127.35
4467 NYSE WLK Mon, May 9, 2022 135.51 136.81 132.69 133.04
4466 NYSE WLK Fri, May 6, 2022 137.76 139.54 134.00 137.40
4465 NYSE WLK Thu, May 5, 2022 141.19 141.19 136.15 138.79
4464 NYSE WLK Wed, May 4, 2022 135.50 140.92 135.42 140.33
4463 NYSE WLK Tue, May 3, 2022 128.98 134.27 128.98 133.57
4462 NYSE WLK Mon, May 2, 2022 127.05 128.54 123.79 127.22
4461 NYSE WLK Fri, Apr 29, 2022 130.61 133.82 126.27 126.55
4460 NYSE WLK Thu, Apr 28, 2022 129.29 130.32 125.54 129.64
4459 NYSE WLK Wed, Apr 27, 2022 128.12 129.97 127.05 128.35
4458 NYSE WLK Tue, Apr 26, 2022 128.29 128.67 126.08 126.99
4457 NYSE WLK Mon, Apr 25, 2022 125.38 128.18 121.46 128.06
4456 NYSE WLK Fri, Apr 22, 2022 129.42 130.24 127.40 127.53
4455 NYSE WLK Thu, Apr 21, 2022 131.50 135.47 129.74 130.52
4454 NYSE WLK Wed, Apr 20, 2022 129.10 131.53 128.17 130.20
4453 NYSE WLK Tue, Apr 19, 2022 125.69 129.28 125.00 128.75
4452 NYSE WLK Mon, Apr 18, 2022 122.59 127.08 122.59 126.65
4451 NYSE WLK Thu, Apr 14, 2022 121.28 123.98 121.28 122.51
4450 NYSE WLK Wed, Apr 13, 2022 118.15 121.36 117.83 121.15
4449 NYSE WLK Tue, Apr 12, 2022 115.79 118.67 115.79 117.02
4448 NYSE WLK Mon, Apr 11, 2022 115.21 117.71 114.24 114.61
4447 NYSE WLK Fri, Apr 8, 2022 114.00 116.31 112.25 114.92
4446 NYSE WLK Thu, Apr 7, 2022 119.39 119.39 111.45 113.44
4445 NYSE WLK Wed, Apr 6, 2022 121.39 121.39 116.50 118.77
4444 NYSE WLK Tue, Apr 5, 2022 121.83 123.59 121.66 121.73
4443 NYSE WLK Mon, Apr 4, 2022 124.83 124.83 119.36 121.46
4442 NYSE WLK Fri, Apr 1, 2022 124.42 125.15 121.47 123.64
4441 NYSE WLK Thu, Mar 31, 2022 124.25 125.35 123.40 123.40
4440 NYSE WLK Wed, Mar 30, 2022 124.19 125.64 123.77 124.75
4439 NYSE WLK Tue, Mar 29, 2022 123.65 123.91 119.41 123.65
4438 NYSE WLK Mon, Mar 28, 2022 126.62 126.62 122.85 125.15
4437 NYSE WLK Fri, Mar 25, 2022 125.32 127.21 124.41 127.20
4436 NYSE WLK Thu, Mar 24, 2022 124.98 126.50 124.57 126.15
4435 NYSE WLK Wed, Mar 23, 2022 125.42 126.73 124.46 124.48
4434 NYSE WLK Tue, Mar 22, 2022 126.95 127.11 124.44 125.67
4433 NYSE WLK Mon, Mar 21, 2022 125.29 126.85 124.34 125.45
4432 NYSE WLK Fri, Mar 18, 2022 121.70 124.67 121.25 123.93
4431 NYSE WLK Thu, Mar 17, 2022 118.22 122.93 118.22 122.92
4430 NYSE WLK Wed, Mar 16, 2022 116.60 118.23 115.22 118.21
4429 NYSE WLK Tue, Mar 15, 2022 117.92 119.67 113.86 115.69
4428 NYSE WLK Mon, Mar 14, 2022 118.51 121.19 117.07 119.71
4427 NYSE WLK Fri, Mar 11, 2022 117.36 121.71 117.36 119.27
4426 NYSE WLK Thu, Mar 10, 2022 113.14 118.40 113.01 117.58
4425 NYSE WLK Wed, Mar 9, 2022 112.01 116.65 111.97 114.00
4424 NYSE WLK Tue, Mar 8, 2022 111.00 111.60 108.40 110.04
4423 NYSE WLK Mon, Mar 7, 2022 112.50 113.53 109.24 110.43
4422 NYSE WLK Fri, Mar 4, 2022 110.02 112.99 109.01 111.94
4421 NYSE WLK Thu, Mar 3, 2022 111.73 112.94 109.82 112.59
4420 NYSE WLK Wed, Mar 2, 2022 108.43 111.89 107.88 111.10
4419 NYSE WLK Tue, Mar 1, 2022 110.39 111.01 104.88 107.00
4418 NYSE WLK Mon, Feb 28, 2022 107.70 110.51 107.35 110.31
4417 NYSE WLK Fri, Feb 25, 2022 107.01 110.63 106.69 109.75
4416 NYSE WLK Thu, Feb 24, 2022 104.78 106.77 102.26 106.19
4415 NYSE WLK Wed, Feb 23, 2022 110.24 111.49 105.22 106.48
4414 NYSE WLK Tue, Feb 22, 2022 106.94 110.96 106.50 108.61
4413 NYSE WLK Fri, Feb 18, 2022 108.85 110.52 105.72 107.45
4412 NYSE WLK Thu, Feb 17, 2022 108.75 110.57 107.86 109.74
4411 NYSE WLK Wed, Feb 16, 2022 104.93 110.94 104.87 109.87
4410 NYSE WLK Tue, Feb 15, 2022 102.95 106.00 102.65 105.98
4409 NYSE WLK Mon, Feb 14, 2022 103.00 103.58 100.04 102.38
4408 NYSE WLK Fri, Feb 11, 2022 102.48 104.98 102.38 103.41
4407 NYSE WLK Thu, Feb 10, 2022 103.07 106.05 102.72 103.21
4406 NYSE WLK Wed, Feb 9, 2022 102.91 104.82 102.45 103.58
4405 NYSE WLK Tue, Feb 8, 2022 100.49 102.47 100.09 102.40
4404 NYSE WLK Mon, Feb 7, 2022 101.27 101.27 98.83 99.71
4403 NYSE WLK Fri, Feb 4, 2022 101.09 103.19 100.26 101.55
4402 NYSE WLK Thu, Feb 3, 2022 100.83 101.94 100.16 101.66
4401 NYSE WLK Wed, Feb 2, 2022 101.15 102.44 99.11 101.50
4400 NYSE WLK Tue, Feb 1, 2022 98.99 101.90 98.81 101.69
4399 NYSE WLK Mon, Jan 31, 2022 95.90 98.78 94.23 98.65
4398 NYSE WLK Fri, Jan 28, 2022 98.76 99.50 94.73 96.76
4397 NYSE WLK Thu, Jan 27, 2022 98.16 100.67 97.14 99.27
4396 NYSE WLK Wed, Jan 26, 2022 99.37 101.03 94.91 96.43
4395 NYSE WLK Tue, Jan 25, 2022 96.29 99.73 94.24 98.84
4394 NYSE WLK Mon, Jan 24, 2022 95.52 98.68 93.55 98.52
4393 NYSE WLK Fri, Jan 21, 2022 100.56 101.31 97.34 98.10
4392 NYSE WLK Thu, Jan 20, 2022 105.11 105.14 101.28 101.49
4391 NYSE WLK Wed, Jan 19, 2022 106.35 107.21 105.32 105.34
4390 NYSE WLK Tue, Jan 18, 2022 108.26 109.01 104.48 106.16
4389 NYSE WLK Fri, Jan 14, 2022 103.80 107.68 102.97 107.25
4388 NYSE WLK Thu, Jan 13, 2022 103.82 106.39 103.65 105.04
4387 NYSE WLK Wed, Jan 12, 2022 102.77 103.41 100.81 103.41
4386 NYSE WLK Tue, Jan 11, 2022 102.41 102.50 99.94 101.33
4385 NYSE WLK Mon, Jan 10, 2022 103.47 104.27 100.63 101.64
4384 NYSE WLK Fri, Jan 7, 2022 102.17 103.83 101.77 103.33
4383 NYSE WLK Thu, Jan 6, 2022 103.09 104.01 101.13 101.70
4382 NYSE WLK Wed, Jan 5, 2022 103.28 104.41 101.41 101.50
4381 NYSE WLK Tue, Jan 4, 2022 99.33 102.68 98.67 102.05
4380 NYSE WLK Mon, Jan 3, 2022 98.05 99.57 97.44 97.48
4379 NYSE WLK Fri, Dec 31, 2021 97.01 97.95 96.78 97.13
4378 NYSE WLK Thu, Dec 30, 2021 97.71 98.67 97.16 97.25
4377 NYSE WLK Wed, Dec 29, 2021 96.39 97.64 96.21 97.25
4376 NYSE WLK Tue, Dec 28, 2021 95.32 97.53 95.32 96.72
4375 NYSE WLK Mon, Dec 27, 2021 94.87 95.49 93.74 95.31
4374 NYSE WLK Thu, Dec 23, 2021 92.88 94.96 92.43 94.27
4373 NYSE WLK Wed, Dec 22, 2021 90.38 92.81 89.50 92.42
4372 NYSE WLK Tue, Dec 21, 2021 90.11 91.72 90.04 90.38
4371 NYSE WLK Mon, Dec 20, 2021 89.81 90.55 88.41 88.62
4370 NYSE WLK Fri, Dec 17, 2021 92.24 93.79 90.01 92.23
4369 NYSE WLK Thu, Dec 16, 2021 92.12 93.75 91.65 92.24
4368 NYSE WLK Wed, Dec 15, 2021 93.00 93.16 88.89 91.26
4367 NYSE WLK Tue, Dec 14, 2021 92.71 95.05 92.47 93.42
4366 NYSE WLK Mon, Dec 13, 2021 95.31 95.59 91.96 93.23
4365 NYSE WLK Fri, Dec 10, 2021 96.95 97.22 94.88 95.80
4364 NYSE WLK Thu, Dec 9, 2021 96.00 96.98 95.49 96.07
4363 NYSE WLK Wed, Dec 8, 2021 97.58 98.05 96.75 97.13
4362 NYSE WLK Tue, Dec 7, 2021 96.87 99.81 96.55 96.91
4361 NYSE WLK Mon, Dec 6, 2021 95.16 96.98 94.58 95.67
4360 NYSE WLK Fri, Dec 3, 2021 92.70 95.10 92.70 94.01
4359 NYSE WLK Thu, Dec 2, 2021 89.73 92.97 88.69 92.24
4358 NYSE WLK Wed, Dec 1, 2021 95.06 95.50 89.09 89.20
4357 NYSE WLK Tue, Nov 30, 2021 97.09 97.10 92.29 92.92
4356 NYSE WLK Mon, Nov 29, 2021 100.94 101.81 97.83 98.36
4355 NYSE WLK Fri, Nov 26, 2021 97.95 99.87 97.23 99.17
4354 NYSE WLK Wed, Nov 24, 2021 102.10 103.83 101.35 102.40
4353 NYSE WLK Tue, Nov 23, 2021 99.23 100.51 98.33 99.96
4352 NYSE WLK Mon, Nov 22, 2021 95.00 99.13 95.00 97.93
4351 NYSE WLK Fri, Nov 19, 2021 100.14 100.40 97.34 97.42
4350 NYSE WLK Thu, Nov 18, 2021 101.89 103.05 100.43 101.61
4349 NYSE WLK Wed, Nov 17, 2021 102.00 102.18 100.72 101.33
4348 NYSE WLK Tue, Nov 16, 2021 103.09 103.29 101.77 102.07
4347 NYSE WLK Mon, Nov 15, 2021 104.84 104.84 102.70 103.40
4346 NYSE WLK Fri, Nov 12, 2021 102.55 104.99 101.88 104.51
4345 NYSE WLK Thu, Nov 11, 2021 99.57 101.89 99.57 101.75
4344 NYSE WLK Wed, Nov 10, 2021 99.45 100.91 98.65 99.14
4343 NYSE WLK Tue, Nov 9, 2021 99.08 100.42 98.74 100.04
4342 NYSE WLK Mon, Nov 8, 2021 100.19 101.66 99.15 99.98
4341 NYSE WLK Fri, Nov 5, 2021 97.92 99.65 97.81 99.17
4340 NYSE WLK Thu, Nov 4, 2021 100.19 100.88 96.19 97.05
4339 NYSE WLK Wed, Nov 3, 2021 98.99 102.50 98.32 100.17
4338 NYSE WLK Tue, Nov 2, 2021 102.44 103.07 97.36 99.26
4337 NYSE WLK Mon, Nov 1, 2021 97.43 99.35 97.26 98.33
4336 NYSE WLK Fri, Oct 29, 2021 96.83 97.89 95.94 97.34
4335 NYSE WLK Thu, Oct 28, 2021 97.04 98.28 96.27 97.58
4334 NYSE WLK Wed, Oct 27, 2021 102.16 102.47 95.66 95.82
4333 NYSE WLK Tue, Oct 26, 2021 102.99 103.70 102.03 102.86
4332 NYSE WLK Mon, Oct 25, 2021 102.00 103.72 101.67 102.77
4331 NYSE WLK Fri, Oct 22, 2021 100.34 102.34 100.34 101.02
4330 NYSE WLK Thu, Oct 21, 2021 101.40 101.68 99.01 100.00
4329 NYSE WLK Wed, Oct 20, 2021 100.80 102.37 100.10 101.76
4328 NYSE WLK Tue, Oct 19, 2021 100.79 101.24 99.47 100.70
4327 NYSE WLK Mon, Oct 18, 2021 100.37 100.97 98.68 100.56
4326 NYSE WLK Fri, Oct 15, 2021 98.51 98.83 97.08 98.10
4325 NYSE WLK Thu, Oct 14, 2021 99.96 100.00 97.57 97.60
4324 NYSE WLK Wed, Oct 13, 2021 99.92 99.96 97.40 98.78
4323 NYSE WLK Tue, Oct 12, 2021 99.37 100.22 98.94 99.66
4322 NYSE WLK Mon, Oct 11, 2021 99.57 101.42 99.37 99.52
4321 NYSE WLK Fri, Oct 8, 2021 100.00 100.00 97.68 98.47
4320 NYSE WLK Thu, Oct 7, 2021 99.01 101.07 98.22 99.01
4319 NYSE WLK Wed, Oct 6, 2021 96.75 97.76 94.75 97.30
4318 NYSE WLK Tue, Oct 5, 2021 95.29 98.88 94.24 98.26
4317 NYSE WLK Mon, Oct 4, 2021 94.04 95.75 93.68 94.17
4316 NYSE WLK Fri, Oct 1, 2021 91.48 94.08 90.43 93.76
4315 NYSE WLK Thu, Sep 30, 2021 92.25 93.46 91.11 91.14
4314 NYSE WLK Wed, Sep 29, 2021 92.57 92.76 90.81 92.22
4313 NYSE WLK Tue, Sep 28, 2021 93.64 94.50 91.37 92.07
4312 NYSE WLK Mon, Sep 27, 2021 88.81 94.00 88.81 93.55
4311 NYSE WLK Fri, Sep 24, 2021 87.08 88.72 86.54 87.81
4310 NYSE WLK Thu, Sep 23, 2021 85.91 88.75 85.54 87.82
4309 NYSE WLK Wed, Sep 22, 2021 83.56 85.33 83.31 84.19
4308 NYSE WLK Tue, Sep 21, 2021 82.70 82.86 80.56 82.31
4307 NYSE WLK Mon, Sep 20, 2021 83.26 83.31 80.47 81.81
4306 NYSE WLK Fri, Sep 17, 2021 86.30 86.65 83.41 85.65
4305 NYSE WLK Thu, Sep 16, 2021 87.80 87.93 86.67 86.75
4304 NYSE WLK Wed, Sep 15, 2021 86.85 88.46 86.68 88.12
4303 NYSE WLK Tue, Sep 14, 2021 87.91 87.91 86.12 86.67
4302 NYSE WLK Mon, Sep 13, 2021 87.09 87.93 86.44 86.90
4301 NYSE WLK Fri, Sep 10, 2021 85.56 86.81 85.48 86.15
4300 NYSE WLK Thu, Sep 9, 2021 84.25 85.72 83.50 84.65
4299 NYSE WLK Wed, Sep 8, 2021 87.09 87.75 84.55 84.81
4298 NYSE WLK Tue, Sep 7, 2021 86.51 87.79 86.51 86.80
4297 NYSE WLK Fri, Sep 3, 2021 87.69 88.06 86.60 86.93
4296 NYSE WLK Thu, Sep 2, 2021 88.00 88.80 87.54 87.64
4295 NYSE WLK Wed, Sep 1, 2021 87.78 88.33 87.24 88.06
4294 NYSE WLK Tue, Aug 31, 2021 87.66 87.70 85.89 87.35
4293 NYSE WLK Mon, Aug 30, 2021 88.57 88.84 87.32 87.72
4292 NYSE WLK Fri, Aug 27, 2021 86.39 88.75 86.39 88.53
4291 NYSE WLK Thu, Aug 26, 2021 87.83 87.92 85.98 86.17
4290 NYSE WLK Wed, Aug 25, 2021 86.12 88.57 85.11 88.16
4289 NYSE WLK Tue, Aug 24, 2021 83.69 86.44 83.69 85.97
4288 NYSE WLK Mon, Aug 23, 2021 82.43 83.65 82.37 83.44
4287 NYSE WLK Fri, Aug 20, 2021 80.72 81.92 80.60 81.46
4286 NYSE WLK Thu, Aug 19, 2021 81.35 82.39 79.88 80.89
4285 NYSE WLK Wed, Aug 18, 2021 83.32 84.95 83.08 83.13
4284 NYSE WLK Tue, Aug 17, 2021 83.90 84.82 82.50 83.83
4283 NYSE WLK Mon, Aug 16, 2021 83.61 85.25 81.91 84.95
4282 NYSE WLK Fri, Aug 13, 2021 85.01 85.98 84.20 84.59
4281 NYSE WLK Thu, Aug 12, 2021 85.96 86.22 84.00 84.88
4280 NYSE WLK Wed, Aug 11, 2021 85.52 86.44 84.61 86.00
4279 NYSE WLK Tue, Aug 10, 2021 82.54 85.14 82.54 84.94
4278 NYSE WLK Mon, Aug 9, 2021 81.80 82.52 81.02 82.02
4277 NYSE WLK Fri, Aug 6, 2021 82.60 83.20 81.68 82.24
4276 NYSE WLK Thu, Aug 5, 2021 81.61 82.71 80.82 80.96
4275 NYSE WLK Wed, Aug 4, 2021 83.14 83.35 80.59 80.62
4274 NYSE WLK Tue, Aug 3, 2021 81.42 84.25 80.05 83.71
4273 NYSE WLK Mon, Aug 2, 2021 83.45 85.13 81.65 81.99
4272 NYSE WLK Fri, Jul 30, 2021 83.54 84.38 81.78 82.92
4271 NYSE WLK Thu, Jul 29, 2021 84.02 84.48 83.06 83.96
4270 NYSE WLK Wed, Jul 28, 2021 83.17 83.78 81.65 82.98
4269 NYSE WLK Tue, Jul 27, 2021 82.33 83.76 81.44 83.00
4268 NYSE WLK Mon, Jul 26, 2021 82.85 83.96 82.28 83.36
4267 NYSE WLK Fri, Jul 23, 2021 83.16 83.35 81.65 82.73
4266 NYSE WLK Thu, Jul 22, 2021 83.55 83.55 81.37 82.58
4265 NYSE WLK Wed, Jul 21, 2021 82.65 83.98 81.81 83.45
4264 NYSE WLK Tue, Jul 20, 2021 79.38 81.20 78.57 80.70
4263 NYSE WLK Mon, Jul 19, 2021 80.88 81.09 78.06 78.98
4262 NYSE WLK Fri, Jul 16, 2021 87.31 87.55 83.11 83.30
4261 NYSE WLK Thu, Jul 15, 2021 86.20 87.91 86.07 86.50
4260 NYSE WLK Wed, Jul 14, 2021 89.04 90.19 86.89 87.13
4259 NYSE WLK Tue, Jul 13, 2021 90.04 90.25 87.73 88.42
4258 NYSE WLK Mon, Jul 12, 2021 88.71 90.30 87.67 89.94
4257 NYSE WLK Fri, Jul 9, 2021 88.47 90.23 88.08 89.63
4256 NYSE WLK Thu, Jul 8, 2021 87.17 87.61 85.40 86.38
4255 NYSE WLK Wed, Jul 7, 2021 87.54 89.69 87.49 89.05
4254 NYSE WLK Tue, Jul 6, 2021 90.90 91.15 87.44 88.23
4253 NYSE WLK Fri, Jul 2, 2021 91.00 91.54 90.06 90.87
4252 NYSE WLK Thu, Jul 1, 2021 91.46 92.22 90.69 91.23
4251 NYSE WLK Wed, Jun 30, 2021 89.06 90.66 89.06 90.09
4250 NYSE WLK Tue, Jun 29, 2021 90.64 91.03 88.89 89.45
4249 NYSE WLK Mon, Jun 28, 2021 91.19 91.51 88.65 89.68
4248 NYSE WLK Fri, Jun 25, 2021 91.55 92.85 90.98 91.30
4247 NYSE WLK Thu, Jun 24, 2021 92.23 92.23 90.18 91.13
4246 NYSE WLK Wed, Jun 23, 2021 93.42 94.12 92.09 92.20
4245 NYSE WLK Tue, Jun 22, 2021 94.24 94.50 92.54 92.89
4244 NYSE WLK Mon, Jun 21, 2021 93.42 94.21 92.64 93.96
4243 NYSE WLK Fri, Jun 18, 2021 92.06 93.52 91.27 91.31
4242 NYSE WLK Thu, Jun 17, 2021 97.23 97.90 91.86 93.95
4241 NYSE WLK Wed, Jun 16, 2021 98.88 98.89 97.45 98.16
4240 NYSE WLK Tue, Jun 15, 2021 99.39 100.14 98.30 99.85
4239 NYSE WLK Mon, Jun 14, 2021 102.52 102.52 98.72 99.53
4238 NYSE WLK Fri, Jun 11, 2021 103.11 103.85 101.49 102.42
4237 NYSE WLK Thu, Jun 10, 2021 104.11 104.99 100.29 100.31
4236 NYSE WLK Wed, Jun 9, 2021 103.27 103.31 101.70 102.68
4235 NYSE WLK Tue, Jun 8, 2021 102.70 104.44 100.65 103.56
4234 NYSE WLK Mon, Jun 7, 2021 105.10 105.77 102.81 102.84
4233 NYSE WLK Fri, Jun 4, 2021 105.75 106.47 104.61 105.12
4232 NYSE WLK Thu, Jun 3, 2021 103.84 105.62 102.76 105.14
4231 NYSE WLK Wed, Jun 2, 2021 105.48 105.54 103.47 104.37
4230 NYSE WLK Tue, Jun 1, 2021 102.49 105.19 101.25 105.19
4229 NYSE WLK Fri, May 28, 2021 101.47 101.80 99.34 100.87
4228 NYSE WLK Thu, May 27, 2021 100.83 101.85 100.58 101.21
4227 NYSE WLK Wed, May 26, 2021 99.09 99.74 98.13 99.41
4226 NYSE WLK Tue, May 25, 2021 101.05 102.20 99.18 99.21
4225 NYSE WLK Mon, May 24, 2021 100.71 101.72 99.96 100.87
4224 NYSE WLK Fri, May 21, 2021 99.88 101.59 99.88 100.21
4223 NYSE WLK Thu, May 20, 2021 99.54 100.03 98.34 98.78
4222 NYSE WLK Wed, May 19, 2021 100.66 100.99 98.29 100.00
4221 NYSE WLK Tue, May 18, 2021 105.45 105.84 102.38 102.54
4220 NYSE WLK Mon, May 17, 2021 103.74 105.35 102.57 105.00
4219 NYSE WLK Fri, May 14, 2021 102.79 104.55 102.59 104.10
4218 NYSE WLK Thu, May 13, 2021 100.96 103.66 100.70 102.06
4217 NYSE WLK Wed, May 12, 2021 103.55 103.90 100.54 100.90
4216 NYSE WLK Tue, May 11, 2021 101.01 103.80 99.95 103.63
4215 NYSE WLK Mon, May 10, 2021 105.00 105.54 102.46 102.60
4214 NYSE WLK Fri, May 7, 2021 101.57 103.82 101.46 103.59
4213 NYSE WLK Thu, May 6, 2021 102.01 102.55 99.86 102.28
4212 NYSE WLK Wed, May 5, 2021 99.35 103.32 98.99 102.01
4211 NYSE WLK Tue, May 4, 2021 94.00 98.16 93.15 97.91
4210 NYSE WLK Mon, May 3, 2021 95.08 95.90 93.43 94.79
4209 NYSE WLK Fri, Apr 30, 2021 96.06 96.89 93.73 93.89
4208 NYSE WLK Thu, Apr 29, 2021 96.61 97.15 95.71 96.85
4207 NYSE WLK Wed, Apr 28, 2021 94.44 96.38 94.41 95.78
4206 NYSE WLK Tue, Apr 27, 2021 93.57 94.83 93.05 94.30
4205 NYSE WLK Mon, Apr 26, 2021 93.92 95.30 93.73 93.92
4204 NYSE WLK Fri, Apr 23, 2021 91.90 94.35 91.56 93.52
4203 NYSE WLK Thu, Apr 22, 2021 95.49 95.75 91.03 91.29
4202 NYSE WLK Wed, Apr 21, 2021 92.31 95.82 92.16 95.78
4201 NYSE WLK Tue, Apr 20, 2021 95.17 95.31 91.68 92.88
4200 NYSE WLK Mon, Apr 19, 2021 95.90 96.85 94.82 95.52
4199 NYSE WLK Fri, Apr 16, 2021 96.59 97.80 95.15 95.70
4198 NYSE WLK Thu, Apr 15, 2021 94.17 95.42 92.71 94.93
4197 NYSE WLK Wed, Apr 14, 2021 92.32 94.69 91.80 93.71
4196 NYSE WLK Tue, Apr 13, 2021 91.02 92.17 89.13 91.55
4195 NYSE WLK Mon, Apr 12, 2021 91.64 92.73 90.85 91.59
4194 NYSE WLK Fri, Apr 9, 2021 88.98 89.59 88.21 89.45
4193 NYSE WLK Thu, Apr 8, 2021 89.68 89.72 87.20 88.50
4192 NYSE WLK Wed, Apr 7, 2021 91.17 91.17 89.32 89.44
4191 NYSE WLK Tue, Apr 6, 2021 89.74 92.62 89.57 90.91
4190 NYSE WLK Mon, Apr 5, 2021 92.51 92.51 90.40 90.50
4189 NYSE WLK Thu, Apr 1, 2021 89.85 91.56 89.11 91.55
4188 NYSE WLK Wed, Mar 31, 2021 90.34 91.22 88.49 88.79
4187 NYSE WLK Tue, Mar 30, 2021 88.79 90.88 88.09 90.38
4186 NYSE WLK Mon, Mar 29, 2021 88.40 90.39 87.86 88.73
4185 NYSE WLK Fri, Mar 26, 2021 89.19 90.24 87.66 89.02
4184 NYSE WLK Thu, Mar 25, 2021 85.41 88.55 84.56 87.98
4183 NYSE WLK Wed, Mar 24, 2021 86.42 89.08 85.90 86.33
4182 NYSE WLK Tue, Mar 23, 2021 90.48 91.06 84.70 85.60
4181 NYSE WLK Mon, Mar 22, 2021 92.37 92.57 90.04 91.70
4180 NYSE WLK Fri, Mar 19, 2021 92.15 92.99 89.10 91.84
4179 NYSE WLK Thu, Mar 18, 2021 93.90 97.16 92.33 92.87
4178 NYSE WLK Wed, Mar 17, 2021 90.50 94.37 90.50 93.65
4177 NYSE WLK Tue, Mar 16, 2021 90.99 92.13 87.66 90.36
4176 NYSE WLK Mon, Mar 15, 2021 92.70 92.94 89.91 91.49
4175 NYSE WLK Fri, Mar 12, 2021 95.27 96.06 93.66 94.64
4174 NYSE WLK Thu, Mar 11, 2021 94.61 97.26 94.51 95.16
4173 NYSE WLK Wed, Mar 10, 2021 91.66 94.14 90.76 93.72
4172 NYSE WLK Tue, Mar 9, 2021 93.59 94.50 91.20 91.64
4171 NYSE WLK Mon, Mar 8, 2021 90.49 95.36 89.82 93.09
4170 NYSE WLK Fri, Mar 5, 2021 86.42 89.68 84.96 89.40
4169 NYSE WLK Thu, Mar 4, 2021 87.00 88.09 83.82 85.29
4168 NYSE WLK Wed, Mar 3, 2021 86.30 88.14 86.03 86.86
4167 NYSE WLK Tue, Mar 2, 2021 86.87 87.82 86.04 86.32
4166 NYSE WLK Mon, Mar 1, 2021 87.23 89.61 86.99 87.03
4165 NYSE WLK Fri, Feb 26, 2021 85.58 86.21 83.00 85.32
4164 NYSE WLK Thu, Feb 25, 2021 88.00 88.42 84.17 85.58
4163 NYSE WLK Wed, Feb 24, 2021 87.50 88.80 87.29 88.17
4162 NYSE WLK Tue, Feb 23, 2021 88.03 90.00 84.92 87.20
4161 NYSE WLK Mon, Feb 22, 2021 87.38 90.36 86.53 87.45
4160 NYSE WLK Fri, Feb 19, 2021 85.09 88.32 84.76 87.37
4159 NYSE WLK Thu, Feb 18, 2021 86.65 87.20 83.87 84.38
4158 NYSE WLK Wed, Feb 17, 2021 85.05 88.00 85.05 86.94
4157 NYSE WLK Tue, Feb 16, 2021 85.73 88.85 85.73 88.05
4156 NYSE WLK Fri, Feb 12, 2021 86.61 87.74 86.36 87.08
4155 NYSE WLK Thu, Feb 11, 2021 86.21 86.96 85.47 86.48
4154 NYSE WLK Wed, Feb 10, 2021 86.80 87.97 84.99 85.76
4153 NYSE WLK Tue, Feb 9, 2021 85.29 86.82 84.42 85.86
4152 NYSE WLK Mon, Feb 8, 2021 85.42 86.50 84.56 85.82
4151 NYSE WLK Fri, Feb 5, 2021 83.47 84.52 83.31 84.25
4150 NYSE WLK Thu, Feb 4, 2021 82.29 83.47 81.27 82.64
4149 NYSE WLK Wed, Feb 3, 2021 81.53 83.29 80.71 82.32
4148 NYSE WLK Tue, Feb 2, 2021 80.42 82.47 79.49 81.42
4147 NYSE WLK Mon, Feb 1, 2021 77.80 79.55 77.66 79.18
4146 NYSE WLK Fri, Jan 29, 2021 78.43 78.93 74.71 76.46
4145 NYSE WLK Thu, Jan 28, 2021 77.77 79.40 76.44 78.65
4144 NYSE WLK Wed, Jan 27, 2021 76.99 77.73 74.42 76.65
4143 NYSE WLK Tue, Jan 26, 2021 81.89 82.00 78.62 78.89
4142 NYSE WLK Mon, Jan 25, 2021 81.56 81.93 78.54 81.06
4141 NYSE WLK Fri, Jan 22, 2021 82.60 83.00 81.93 82.14
4140 NYSE WLK Thu, Jan 21, 2021 85.23 85.70 83.64 84.09
4139 NYSE WLK Wed, Jan 20, 2021 86.01 86.69 84.86 85.23
4138 NYSE WLK Tue, Jan 19, 2021 86.40 87.16 84.51 85.28
4137 NYSE WLK Fri, Jan 15, 2021 85.77 86.75 84.56 85.61
4136 NYSE WLK Thu, Jan 14, 2021 88.15 88.40 86.57 86.98
4135 NYSE WLK Wed, Jan 13, 2021 90.94 90.99 86.66 87.44
4134 NYSE WLK Tue, Jan 12, 2021 89.09 90.65 88.52 90.53
4133 NYSE WLK Mon, Jan 11, 2021 86.79 89.08 86.61 88.59
4132 NYSE WLK Fri, Jan 8, 2021 91.06 91.11 87.63 88.28
4131 NYSE WLK Thu, Jan 7, 2021 90.73 91.83 89.35 90.20
4130 NYSE WLK Wed, Jan 6, 2021 85.92 91.31 85.92 89.86
4129 NYSE WLK Tue, Jan 5, 2021 81.40 85.11 81.40 84.65
4128 NYSE WLK Mon, Jan 4, 2021 83.16 84.33 81.43 81.65
4127 NYSE WLK Thu, Dec 31, 2020 81.15 82.82 80.51 81.60
4126 NYSE WLK Wed, Dec 30, 2020 80.09 82.40 80.09 81.33
4125 NYSE WLK Tue, Dec 29, 2020 81.08 81.30 79.00 79.86
4124 NYSE WLK Mon, Dec 28, 2020 81.96 82.60 80.03 80.23
4123 NYSE WLK Thu, Dec 24, 2020 81.56 81.84 80.41 81.09
4122 NYSE WLK Wed, Dec 23, 2020 81.75 82.97 81.51 81.57
4121 NYSE WLK Tue, Dec 22, 2020 82.23 82.72 81.05 81.14
4120 NYSE WLK Mon, Dec 21, 2020 83.15 83.15 80.59 82.53
4119 NYSE WLK Fri, Dec 18, 2020 81.85 82.80 80.26 81.66
4118 NYSE WLK Thu, Dec 17, 2020 81.88 82.03 80.61 81.47
4117 NYSE WLK Wed, Dec 16, 2020 82.54 82.54 80.50 81.18
4116 NYSE WLK Tue, Dec 15, 2020 82.14 82.83 81.02 81.72
4115 NYSE WLK Mon, Dec 14, 2020 83.75 84.90 81.26 81.28
4114 NYSE WLK Fri, Dec 11, 2020 83.22 84.36 82.54 83.42
4113 NYSE WLK Thu, Dec 10, 2020 82.94 84.45 82.89 84.08
4112 NYSE WLK Wed, Dec 9, 2020 83.51 84.75 82.25 83.10
4111 NYSE WLK Tue, Dec 8, 2020 79.80 83.32 79.62 82.71
4110 NYSE WLK Mon, Dec 7, 2020 81.40 81.95 79.89 80.36
4109 NYSE WLK Fri, Dec 4, 2020 79.08 82.37 79.08 81.62
4108 NYSE WLK Thu, Dec 3, 2020 77.84 79.67 77.75 78.56
4107 NYSE WLK Wed, Dec 2, 2020 76.59 78.04 76.50 77.79
4106 NYSE WLK Tue, Dec 1, 2020 77.30 78.20 76.39 76.94
4105 NYSE WLK Mon, Nov 30, 2020 77.20 77.30 75.03 75.15
4104 NYSE WLK Fri, Nov 27, 2020 77.92 78.96 76.91 77.17
4103 NYSE WLK Wed, Nov 25, 2020 78.29 78.50 77.14 77.82
4102 NYSE WLK Tue, Nov 24, 2020 77.34 79.84 77.19 79.61
4101 NYSE WLK Mon, Nov 23, 2020 74.12 76.67 74.12 76.07
4100 NYSE WLK Fri, Nov 20, 2020 74.19 75.02 72.83 73.27
4099 NYSE WLK Thu, Nov 19, 2020 74.79 75.29 73.37 74.53
4098 NYSE WLK Wed, Nov 18, 2020 76.36 77.50 74.71 74.84
4097 NYSE WLK Tue, Nov 17, 2020 74.24 76.22 72.94 76.22
4096 NYSE WLK Mon, Nov 16, 2020 75.24 75.84 73.76 75.49
4095 NYSE WLK Fri, Nov 13, 2020 72.79 74.20 72.14 73.63
4094 NYSE WLK Thu, Nov 12, 2020 74.01 74.01 70.68 71.81
4093 NYSE WLK Wed, Nov 11, 2020 75.91 76.30 73.81 74.81
4092 NYSE WLK Tue, Nov 10, 2020 75.04 75.21 73.47 75.01
4091 NYSE WLK Mon, Nov 9, 2020 77.41 81.08 74.03 74.40
4090 NYSE WLK Fri, Nov 6, 2020 74.21 75.39 71.78 71.83
4089 NYSE WLK Thu, Nov 5, 2020 71.32 74.79 71.02 73.65
4088 NYSE WLK Wed, Nov 4, 2020 73.61 73.88 69.56 70.15
4087 NYSE WLK Tue, Nov 3, 2020 71.54 74.33 69.25 74.01
4086 NYSE WLK Mon, Nov 2, 2020 68.70 72.14 68.30 70.93
4085 NYSE WLK Fri, Oct 30, 2020 66.57 67.72 65.35 67.62
4084 NYSE WLK Thu, Oct 29, 2020 64.88 67.48 64.41 67.06
4083 NYSE WLK Wed, Oct 28, 2020 66.11 66.37 64.91 65.26
4082 NYSE WLK Tue, Oct 27, 2020 69.69 69.77 67.87 67.94
4081 NYSE WLK Mon, Oct 26, 2020 70.38 70.90 69.44 70.04
4080 NYSE WLK Fri, Oct 23, 2020 72.00 73.14 71.63 71.66
4079 NYSE WLK Thu, Oct 22, 2020 70.35 71.59 69.42 71.50
4078 NYSE WLK Wed, Oct 21, 2020 70.50 71.68 70.03 70.03
4077 NYSE WLK Tue, Oct 20, 2020 70.09 71.19 69.99 70.57
4076 NYSE WLK Mon, Oct 19, 2020 70.41 71.78 69.43 69.53
4075 NYSE WLK Fri, Oct 16, 2020 71.19 71.92 69.61 69.98
4074 NYSE WLK Thu, Oct 15, 2020 70.62 71.17 68.48 70.76
4073 NYSE WLK Wed, Oct 14, 2020 68.61 72.34 68.53 72.06
4072 NYSE WLK Tue, Oct 13, 2020 69.26 69.33 67.87 68.26
4071 NYSE WLK Mon, Oct 12, 2020 69.45 69.77 68.58 69.69
4070 NYSE WLK Fri, Oct 9, 2020 69.72 70.21 68.46 69.08
4069 NYSE WLK Thu, Oct 8, 2020 67.90 68.87 67.30 67.93
4068 NYSE WLK Wed, Oct 7, 2020 67.16 68.46 66.76 67.56
4067 NYSE WLK Tue, Oct 6, 2020 67.92 68.24 65.86 66.01
4066 NYSE WLK Mon, Oct 5, 2020 65.23 67.25 65.16 67.16
4065 NYSE WLK Fri, Oct 2, 2020 60.88 64.73 60.84 63.98
4064 NYSE WLK Thu, Oct 1, 2020 63.66 64.05 61.65 62.25
4063 NYSE WLK Wed, Sep 30, 2020 62.93 65.02 62.93 63.22
4062 NYSE WLK Tue, Sep 29, 2020 62.38 62.75 61.51 62.09
4061 NYSE WLK Mon, Sep 28, 2020 61.81 63.19 61.22 62.59
4060 NYSE WLK Fri, Sep 25, 2020 60.54 61.28 59.75 60.56
4059 NYSE WLK Thu, Sep 24, 2020 62.43 62.43 60.30 61.10
4058 NYSE WLK Wed, Sep 23, 2020 64.49 65.13 62.16 62.25
4057 NYSE WLK Tue, Sep 22, 2020 64.72 65.03 63.24 64.47
4056 NYSE WLK Mon, Sep 21, 2020 65.28 66.01 62.89 64.51
4055 NYSE WLK Fri, Sep 18, 2020 68.36 68.37 66.74 67.37
4054 NYSE WLK Thu, Sep 17, 2020 66.08 68.81 65.41 68.49
4053 NYSE WLK Wed, Sep 16, 2020 68.12 68.81 66.41 66.64
4052 NYSE WLK Tue, Sep 15, 2020 67.20 68.01 66.37 67.97
4051 NYSE WLK Mon, Sep 14, 2020 64.40 66.99 63.87 66.75
4050 NYSE WLK Fri, Sep 11, 2020 62.58 64.30 62.23 64.10
4049 NYSE WLK Thu, Sep 10, 2020 62.62 62.92 61.78 62.08
4048 NYSE WLK Wed, Sep 9, 2020 61.62 62.98 61.54 62.43
4047 NYSE WLK Tue, Sep 8, 2020 61.61 62.66 61.20 61.45
4046 NYSE WLK Fri, Sep 4, 2020 62.21 63.01 61.09 62.81
4045 NYSE WLK Thu, Sep 3, 2020 62.52 62.79 60.43 61.28
4044 NYSE WLK Wed, Sep 2, 2020 61.82 62.64 61.28 62.56
4043 NYSE WLK Tue, Sep 1, 2020 59.26 61.23 58.48 61.19
4042 NYSE WLK Mon, Aug 31, 2020 61.51 61.57 59.30 59.32
4041 NYSE WLK Fri, Aug 28, 2020 60.81 61.37 59.93 61.18
4040 NYSE WLK Thu, Aug 27, 2020 60.25 61.03 59.28 60.85
4039 NYSE WLK Wed, Aug 26, 2020 60.20 60.65 58.71 59.85
4038 NYSE WLK Tue, Aug 25, 2020 60.18 61.38 59.53 60.32
4037 NYSE WLK Mon, Aug 24, 2020 57.42 60.03 57.29 59.78
4036 NYSE WLK Fri, Aug 21, 2020 57.72 58.19 56.58 56.51
4035 NYSE WLK Thu, Aug 20, 2020 57.72 58.40 57.64 58.01
4034 NYSE WLK Wed, Aug 19, 2020 59.48 59.95 58.15 58.46
4033 NYSE WLK Tue, Aug 18, 2020 59.61 60.53 59.48 59.78
4032 NYSE WLK Mon, Aug 17, 2020 61.62 62.06 59.66 60.06
4031 NYSE WLK Fri, Aug 14, 2020 59.63 61.23 59.60 60.97
4030 NYSE WLK Thu, Aug 13, 2020 60.21 60.86 59.89 60.10
4029 NYSE WLK Wed, Aug 12, 2020 62.43 62.48 60.44 60.72
4028 NYSE WLK Tue, Aug 11, 2020 62.47 65.81 61.28 61.50
4027 NYSE WLK Mon, Aug 10, 2020 58.35 61.63 58.35 61.37
4026 NYSE WLK Fri, Aug 7, 2020 57.31 57.83 56.01 57.78
4025 NYSE WLK Thu, Aug 6, 2020 57.68 58.57 56.71 57.37
4024 NYSE WLK Wed, Aug 5, 2020 56.07 57.60 56.07 57.27
4023 NYSE WLK Tue, Aug 4, 2020 54.76 55.37 54.39 55.22
4022 NYSE WLK Mon, Aug 3, 2020 54.98 55.63 54.20 54.79
4021 NYSE WLK Fri, Jul 31, 2020 54.95 55.76 53.25 54.50
4020 NYSE WLK Thu, Jul 30, 2020 56.19 56.19 54.11 55.15
4019 NYSE WLK Wed, Jul 29, 2020 56.41 57.40 55.82 57.32
4018 NYSE WLK Tue, Jul 28, 2020 58.00 58.39 56.06 56.12
4017 NYSE WLK Mon, Jul 27, 2020 56.18 58.60 55.79 58.53
4016 NYSE WLK Fri, Jul 24, 2020 55.45 56.12 55.03 55.95
4015 NYSE WLK Thu, Jul 23, 2020 54.56 55.63 54.43 55.38
4014 NYSE WLK Wed, Jul 22, 2020 55.31 55.73 54.40 54.95
4013 NYSE WLK Tue, Jul 21, 2020 54.80 56.22 54.80 55.71
4012 NYSE WLK Mon, Jul 20, 2020 55.16 55.90 54.12 54.38
4011 NYSE WLK Fri, Jul 17, 2020 55.60 56.14 55.38 55.74
4010 NYSE WLK Thu, Jul 16, 2020 54.93 56.32 54.52 55.37
4009 NYSE WLK Wed, Jul 15, 2020 54.92 55.61 54.08 55.18
4008 NYSE WLK Tue, Jul 14, 2020 52.06 53.44 51.56 53.36
4007 NYSE WLK Mon, Jul 13, 2020 53.50 53.50 52.12 52.14
4006 NYSE WLK Fri, Jul 10, 2020 50.96 52.67 50.79 52.64
4005 NYSE WLK Thu, Jul 9, 2020 52.87 52.87 50.38 51.08
4004 NYSE WLK Wed, Jul 8, 2020 53.77 53.99 52.43 52.82
4003 NYSE WLK Tue, Jul 7, 2020 54.24 54.91 53.65 53.80
4002 NYSE WLK Mon, Jul 6, 2020 55.64 55.79 53.81 54.82
4001 NYSE WLK Thu, Jul 2, 2020 54.26 55.98 53.31 54.22
4000 NYSE WLK Wed, Jul 1, 2020 54.09 54.38 52.78 52.92
3999 NYSE WLK Tue, Jun 30, 2020 53.41 54.29 52.85 53.65
3998 NYSE WLK Mon, Jun 29, 2020 53.33 54.53 52.82 54.07
3997 NYSE WLK Fri, Jun 26, 2020 53.20 53.49 51.78 52.68
3996 NYSE WLK Thu, Jun 25, 2020 52.65 53.91 51.76 53.88
3995 NYSE WLK Wed, Jun 24, 2020 53.69 54.17 52.17 52.57
3994 NYSE WLK Tue, Jun 23, 2020 55.82 55.89 54.56 54.66
3993 NYSE WLK Mon, Jun 22, 2020 54.83 55.40 53.57 54.89
3992 NYSE WLK Fri, Jun 19, 2020 55.75 56.32 53.90 54.86
3991 NYSE WLK Thu, Jun 18, 2020 53.10 54.57 53.10 53.82
3990 NYSE WLK Wed, Jun 17, 2020 55.33 56.08 54.03 54.20
3989 NYSE WLK Tue, Jun 16, 2020 57.12 57.43 54.25 55.10
3988 NYSE WLK Mon, Jun 15, 2020 50.41 54.62 49.66 54.32
3987 NYSE WLK Fri, Jun 12, 2020 54.54 54.93 52.06 53.02
3986 NYSE WLK Thu, Jun 11, 2020 51.91 53.33 50.59 51.37
3985 NYSE WLK Wed, Jun 10, 2020 57.18 57.18 54.49 55.20
3984 NYSE WLK Tue, Jun 9, 2020 57.41 58.36 56.68 57.48
3983 NYSE WLK Mon, Jun 8, 2020 59.04 59.85 57.82 59.72
3982 NYSE WLK Fri, Jun 5, 2020 58.78 60.42 57.60 58.25
3981 NYSE WLK Thu, Jun 4, 2020 52.15 55.67 51.14 55.60
3980 NYSE WLK Wed, Jun 3, 2020 52.00 53.60 52.00 52.50
3979 NYSE WLK Tue, Jun 2, 2020 49.20 51.60 48.86 51.22
3978 NYSE WLK Mon, Jun 1, 2020 47.72 48.70 47.43 48.20
3977 NYSE WLK Fri, May 29, 2020 47.11 47.96 46.33 47.70
3976 NYSE WLK Thu, May 28, 2020 49.56 49.56 47.22 47.70
3975 NYSE WLK Wed, May 27, 2020 48.00 49.28 47.04 49.01
3974 NYSE WLK Tue, May 26, 2020 46.00 47.66 45.16 46.60
3973 NYSE WLK Fri, May 22, 2020 43.36 44.16 42.70 44.01
3972 NYSE WLK Thu, May 21, 2020 44.77 45.51 43.74 43.59
3971 NYSE WLK Wed, May 20, 2020 43.21 45.03 42.96 44.64
3970 NYSE WLK Tue, May 19, 2020 43.54 43.86 41.96 42.02
3969 NYSE WLK Mon, May 18, 2020 40.55 44.52 40.55 43.90
3968 NYSE WLK Fri, May 15, 2020 39.05 39.15 37.56 38.53
3967 NYSE WLK Thu, May 14, 2020 37.49 39.83 36.09 39.65
3966 NYSE WLK Wed, May 13, 2020 41.21 41.21 38.32 38.77
3965 NYSE WLK Tue, May 12, 2020 43.03 43.39 41.45 41.59
3964 NYSE WLK Mon, May 11, 2020 42.51 43.02 40.56 42.57
3963 NYSE WLK Fri, May 8, 2020 42.70 43.85 42.40 43.52
3962 NYSE WLK Thu, May 7, 2020 40.55 42.36 40.55 41.55
3961 NYSE WLK Wed, May 6, 2020 42.38 43.25 39.47 39.61
3960 NYSE WLK Tue, May 5, 2020 42.85 44.74 42.12 42.75
3959 NYSE WLK Mon, May 4, 2020 41.88 42.85 38.59 41.53
3958 NYSE WLK Fri, May 1, 2020 42.35 42.80 39.88 40.38
3957 NYSE WLK Thu, Apr 30, 2020 45.60 45.61 43.29 43.45
3956 NYSE WLK Wed, Apr 29, 2020 44.15 46.75 43.75 46.63
3955 NYSE WLK Tue, Apr 28, 2020 43.89 44.24 41.60 42.58
3954 NYSE WLK Mon, Apr 27, 2020 40.30 42.75 40.22 42.33
3953 NYSE WLK Fri, Apr 24, 2020 40.43 40.94 39.54 40.70
3952 NYSE WLK Thu, Apr 23, 2020 39.90 41.12 39.21 39.86
3951 NYSE WLK Wed, Apr 22, 2020 39.31 39.73 38.09 38.59
3950 NYSE WLK Tue, Apr 21, 2020 37.41 38.25 36.41 38.03
3949 NYSE WLK Mon, Apr 20, 2020 39.34 40.07 38.42 38.92
3948 NYSE WLK Fri, Apr 17, 2020 39.54 41.84 39.46 40.78
3947 NYSE WLK Thu, Apr 16, 2020 38.75 39.09 36.82 37.95
3946 NYSE WLK Wed, Apr 15, 2020 41.61 41.61 39.01 39.10
3945 NYSE WLK Tue, Apr 14, 2020 44.08 46.35 43.19 43.81
3944 NYSE WLK Mon, Apr 13, 2020 45.21 45.31 42.37 43.16
3943 NYSE WLK Thu, Apr 9, 2020 43.97 47.19 42.79 45.61
3942 NYSE WLK Wed, Apr 8, 2020 40.80 42.23 39.52 41.87
3941 NYSE WLK Tue, Apr 7, 2020 41.00 42.98 39.96 40.58
3940 NYSE WLK Mon, Apr 6, 2020 36.95 39.37 36.95 39.04
3939 NYSE WLK Fri, Apr 3, 2020 35.51 36.21 34.85 35.12
3938 NYSE WLK Thu, Apr 2, 2020 35.75 38.23 34.69 35.20
3937 NYSE WLK Wed, Apr 1, 2020 36.40 36.40 34.02 35.65
3936 NYSE WLK Tue, Mar 31, 2020 37.72 39.35 37.47 38.17
3935 NYSE WLK Mon, Mar 30, 2020 39.01 39.91 37.18 37.87
3934 NYSE WLK Fri, Mar 27, 2020 38.80 40.61 36.46 38.86
3933 NYSE WLK Thu, Mar 26, 2020 40.44 42.18 39.55 40.54
3932 NYSE WLK Wed, Mar 25, 2020 37.97 43.12 37.36 40.76
3931 NYSE WLK Tue, Mar 24, 2020 34.78 37.96 33.64 37.65
3930 NYSE WLK Mon, Mar 23, 2020 33.05 33.93 30.88 32.01
3929 NYSE WLK Fri, Mar 20, 2020 37.98 38.78 33.16 33.80
3928 NYSE WLK Thu, Mar 19, 2020 32.71 39.77 31.79 37.13
3927 NYSE WLK Wed, Mar 18, 2020 30.03 33.30 29.85 32.95
3926 NYSE WLK Tue, Mar 17, 2020 30.86 35.06 29.56 32.58
3925 NYSE WLK Mon, Mar 16, 2020 29.49 32.86 28.99 29.87
3924 NYSE WLK Fri, Mar 13, 2020 35.00 35.22 31.31 33.89
3923 NYSE WLK Thu, Mar 12, 2020 35.29 35.62 31.59 31.94
3922 NYSE WLK Wed, Mar 11, 2020 40.03 40.12 37.51 38.43
3921 NYSE WLK Tue, Mar 10, 2020 41.29 42.00 38.50 41.76
3920 NYSE WLK Mon, Mar 9, 2020 45.70 47.02 38.81 38.96
3919 NYSE WLK Fri, Mar 6, 2020 52.40 53.76 50.72 51.13
3918 NYSE WLK Thu, Mar 5, 2020 55.37 55.63 53.92 54.30
3917 NYSE WLK Wed, Mar 4, 2020 57.22 57.28 55.29 57.18
3916 NYSE WLK Tue, Mar 3, 2020 57.45 58.93 55.05 56.14
3915 NYSE WLK Mon, Mar 2, 2020 56.50 57.36 54.54 57.30
3914 NYSE WLK Fri, Feb 28, 2020 51.17 56.13 51.14 55.87
3913 NYSE WLK Thu, Feb 27, 2020 54.82 54.99 52.37 52.39
3912 NYSE WLK Wed, Feb 26, 2020 57.62 58.11 55.51 56.29
3911 NYSE WLK Tue, Feb 25, 2020 60.50 60.50 56.48 57.27
3910 NYSE WLK Mon, Feb 24, 2020 59.36 60.02 58.41 59.75
3909 NYSE WLK Fri, Feb 21, 2020 62.73 63.99 62.15 62.20
3908 NYSE WLK Thu, Feb 20, 2020 62.94 64.44 62.49 63.40
3907 NYSE WLK Wed, Feb 19, 2020 60.20 63.24 58.65 63.05
3906 NYSE WLK Tue, Feb 18, 2020 60.65 62.95 59.01 60.25
3905 NYSE WLK Fri, Feb 14, 2020 67.04 67.31 64.32 64.84
3904 NYSE WLK Thu, Feb 13, 2020 66.69 67.54 66.20 66.82
3903 NYSE WLK Wed, Feb 12, 2020 66.89 68.15 65.79 66.92
3902 NYSE WLK Tue, Feb 11, 2020 65.02 66.74 64.68 65.73
3901 NYSE WLK Mon, Feb 10, 2020 63.17 64.51 62.92 64.00
3900 NYSE WLK Fri, Feb 7, 2020 63.28 63.76 62.62 63.37
3899 NYSE WLK Thu, Feb 6, 2020 64.80 65.07 63.30 64.32
3898 NYSE WLK Wed, Feb 5, 2020 63.39 64.93 62.52 64.55
3897 NYSE WLK Tue, Feb 4, 2020 62.30 63.67 61.47 62.36
3896 NYSE WLK Mon, Feb 3, 2020 61.45 61.64 60.42 60.80
3895 NYSE WLK Fri, Jan 31, 2020 63.23 63.23 60.80 61.20
3894 NYSE WLK Thu, Jan 30, 2020 63.62 64.26 63.26 63.91
3893 NYSE WLK Wed, Jan 29, 2020 64.48 65.85 64.08 64.65
3892 NYSE WLK Tue, Jan 28, 2020 64.38 64.72 63.61 64.20
3891 NYSE WLK Mon, Jan 27, 2020 64.41 64.79 63.44 63.88
3890 NYSE WLK Fri, Jan 24, 2020 67.59 67.73 65.78 65.97
3889 NYSE WLK Thu, Jan 23, 2020 66.93 67.93 65.44 67.54
3888 NYSE WLK Wed, Jan 22, 2020 70.16 70.16 67.37 67.75
3887 NYSE WLK Tue, Jan 21, 2020 71.87 71.87 69.28 69.87
3886 NYSE WLK Fri, Jan 17, 2020 71.53 71.85 70.84 71.19
3885 NYSE WLK Thu, Jan 16, 2020 70.83 71.43 70.66 71.26
3884 NYSE WLK Wed, Jan 15, 2020 69.68 71.07 68.66 70.33
3883 NYSE WLK Tue, Jan 14, 2020 69.20 70.44 68.71 70.22
3882 NYSE WLK Mon, Jan 13, 2020 67.68 69.30 67.41 68.92
3881 NYSE WLK Fri, Jan 10, 2020 68.00 68.87 67.52 67.69
3880 NYSE WLK Thu, Jan 9, 2020 68.12 68.35 67.09 67.75
3879 NYSE WLK Wed, Jan 8, 2020 67.99 68.15 66.55 67.93
3878 NYSE WLK Tue, Jan 7, 2020 68.04 68.86 67.59 68.22
3877 NYSE WLK Mon, Jan 6, 2020 67.38 69.52 66.88 68.74
3876 NYSE WLK Fri, Jan 3, 2020 68.55 68.88 67.35 67.55
3875 NYSE WLK Thu, Jan 2, 2020 70.61 70.77 68.62 69.07
3874 NYSE WLK Tue, Dec 31, 2019 68.76 70.18 68.76 70.15
3873 NYSE WLK Mon, Dec 30, 2019 69.88 70.00 68.92 69.01
3872 NYSE WLK Fri, Dec 27, 2019 70.84 70.87 69.75 69.81
3871 NYSE WLK Thu, Dec 26, 2019 70.13 70.79 70.03 70.73
3870 NYSE WLK Tue, Dec 24, 2019 70.18 70.18 69.47 70.10
3869 NYSE WLK Mon, Dec 23, 2019 69.15 69.98 68.91 69.88
3868 NYSE WLK Fri, Dec 20, 2019 69.68 69.93 68.91 69.16
3867 NYSE WLK Thu, Dec 19, 2019 69.91 70.26 69.04 69.38
3866 NYSE WLK Wed, Dec 18, 2019 69.28 70.33 68.49 70.12
3865 NYSE WLK Tue, Dec 17, 2019 69.74 70.46 69.09 69.59
3864 NYSE WLK Mon, Dec 16, 2019 71.00 71.53 69.96 70.07
3863 NYSE WLK Fri, Dec 13, 2019 71.89 72.67 69.73 70.50
3862 NYSE WLK Thu, Dec 12, 2019 69.05 71.83 68.65 71.57
3861 NYSE WLK Wed, Dec 11, 2019 68.63 71.10 68.63 69.26
3860 NYSE WLK Tue, Dec 10, 2019 68.71 69.45 68.25 68.54
3859 NYSE WLK Mon, Dec 9, 2019 69.19 69.60 68.68 68.87
3858 NYSE WLK Fri, Dec 6, 2019 68.28 69.66 68.25 69.02
3857 NYSE WLK Thu, Dec 5, 2019 67.31 68.05 66.64 67.61
3856 NYSE WLK Wed, Dec 4, 2019 67.41 68.30 67.03 67.11
3855 NYSE WLK Tue, Dec 3, 2019 67.41 67.77 65.58 66.36
3854 NYSE WLK Mon, Dec 2, 2019 69.15 69.71 68.25 68.29
3853 NYSE WLK Fri, Nov 29, 2019 69.38 69.56 68.43 68.68
3852 NYSE WLK Wed, Nov 27, 2019 69.95 70.12 69.15 69.86
3851 NYSE WLK Tue, Nov 26, 2019 70.41 71.10 69.63 69.63
3850 NYSE WLK Mon, Nov 25, 2019 68.78 70.90 68.68 70.56
3849 NYSE WLK Fri, Nov 22, 2019 68.66 69.86 68.18 68.77
3848 NYSE WLK Thu, Nov 21, 2019 68.31 68.40 67.39 68.17
3847 NYSE WLK Wed, Nov 20, 2019 69.00 69.58 67.47 68.15
3846 NYSE WLK Tue, Nov 19, 2019 71.17 71.45 69.44 69.65
3845 NYSE WLK Mon, Nov 18, 2019 71.24 71.92 70.44 70.87
3844 NYSE WLK Fri, Nov 15, 2019 73.27 73.40 71.15 71.26
3843 NYSE WLK Thu, Nov 14, 2019 71.24 73.04 71.19 72.54
3842 NYSE WLK Wed, Nov 13, 2019 71.34 71.87 70.64 71.12
3841 NYSE WLK Tue, Nov 12, 2019 73.95 74.26 72.00 72.45
3840 NYSE WLK Mon, Nov 11, 2019 73.77 74.40 73.14 73.75
3839 NYSE WLK Fri, Nov 8, 2019 74.88 75.65 73.42 74.70
3838 NYSE WLK Thu, Nov 7, 2019 73.84 74.90 73.35 74.82
3837 NYSE WLK Wed, Nov 6, 2019 74.91 74.95 72.50 73.48
3836 NYSE WLK Tue, Nov 5, 2019 70.37 75.31 70.00 74.68
3835 NYSE WLK Mon, Nov 4, 2019 67.00 68.52 66.50 68.35
3834 NYSE WLK Fri, Nov 1, 2019 63.57 65.79 63.47 65.75
3833 NYSE WLK Thu, Oct 31, 2019 64.62 64.80 62.26 63.19
3832 NYSE WLK Wed, Oct 30, 2019 64.49 65.38 63.50 65.04
3831 NYSE WLK Tue, Oct 29, 2019 64.95 65.52 64.44 64.90
3830 NYSE WLK Mon, Oct 28, 2019 64.78 66.67 64.68 65.31
3829 NYSE WLK Fri, Oct 25, 2019 61.30 64.45 61.30 64.31
3828 NYSE WLK Thu, Oct 24, 2019 62.80 63.08 61.18 61.83
3827 NYSE WLK Wed, Oct 23, 2019 62.84 62.86 61.81 62.05
3826 NYSE WLK Tue, Oct 22, 2019 61.37 62.66 60.20 62.61
3825 NYSE WLK Mon, Oct 21, 2019 62.65 63.25 61.19 61.36
3824 NYSE WLK Fri, Oct 18, 2019 61.38 62.71 61.22 61.79
3823 NYSE WLK Thu, Oct 17, 2019 62.37 62.41 60.65 61.21
3822 NYSE WLK Wed, Oct 16, 2019 62.69 64.44 62.12 62.21
3821 NYSE WLK Tue, Oct 15, 2019 61.87 62.56 60.84 62.51
3820 NYSE WLK Mon, Oct 14, 2019 62.99 63.03 61.03 62.34
3819 NYSE WLK Fri, Oct 11, 2019 61.58 64.28 61.02 63.72
3818 NYSE WLK Thu, Oct 10, 2019 59.53 60.72 58.68 60.08
3817 NYSE WLK Wed, Oct 9, 2019 58.42 59.00 57.75 58.85
3816 NYSE WLK Tue, Oct 8, 2019 58.98 59.76 58.56 58.61
3815 NYSE WLK Mon, Oct 7, 2019 60.15 60.57 59.55 59.65
3814 NYSE WLK Fri, Oct 4, 2019 60.86 61.30 59.43 60.30
3813 NYSE WLK Thu, Oct 3, 2019 59.83 60.82 59.31 60.77
3812 NYSE WLK Wed, Oct 2, 2019 59.38 61.45 58.71 60.49
3811 NYSE WLK Tue, Oct 1, 2019 66.01 66.96 62.93 63.06
3810 NYSE WLK Mon, Sep 30, 2019 65.48 66.17 64.78 65.52
3809 NYSE WLK Fri, Sep 27, 2019 64.73 66.58 64.73 65.44
3808 NYSE WLK Thu, Sep 26, 2019 64.24 65.33 63.74 64.98
3807 NYSE WLK Wed, Sep 25, 2019 62.51 64.84 62.51 64.50
3806 NYSE WLK Tue, Sep 24, 2019 64.73 65.42 62.45 63.05
3805 NYSE WLK Mon, Sep 23, 2019 63.95 65.37 63.95 65.13
3804 NYSE WLK Fri, Sep 20, 2019 65.90 66.66 64.76 65.10
3803 NYSE WLK Thu, Sep 19, 2019 65.08 66.53 64.60 65.70
3802 NYSE WLK Wed, Sep 18, 2019 65.12 65.24 63.32 64.68
3801 NYSE WLK Tue, Sep 17, 2019 68.41 68.52 65.07 65.71
3800 NYSE WLK Mon, Sep 16, 2019 67.43 71.13 66.94 69.11
3799 NYSE WLK Fri, Sep 13, 2019 65.56 66.75 64.31 65.90
3798 NYSE WLK Thu, Sep 12, 2019 66.43 66.91 64.04 64.26
3797 NYSE WLK Wed, Sep 11, 2019 65.55 67.71 64.00 67.30
3796 NYSE WLK Tue, Sep 10, 2019 64.13 65.71 63.66 65.34
3795 NYSE WLK Mon, Sep 9, 2019 61.00 63.74 60.73 63.66
3794 NYSE WLK Fri, Sep 6, 2019 59.99 60.94 58.91 60.60
3793 NYSE WLK Thu, Sep 5, 2019 58.49 60.46 58.31 60.21
3792 NYSE WLK Wed, Sep 4, 2019 58.22 58.46 57.26 57.80
3791 NYSE WLK Tue, Sep 3, 2019 57.49 57.89 56.01 57.09
3790 NYSE WLK Fri, Aug 30, 2019 58.87 59.41 58.29 58.59
3789 NYSE WLK Thu, Aug 29, 2019 57.66 59.02 57.66 58.37
3788 NYSE WLK Wed, Aug 28, 2019 56.12 57.75 55.82 57.08
3787 NYSE WLK Tue, Aug 27, 2019 57.02 57.16 55.87 56.10
3786 NYSE WLK Mon, Aug 26, 2019 57.69 57.75 56.16 56.42
3785 NYSE WLK Fri, Aug 23, 2019 58.88 59.15 56.88 57.02
3784 NYSE WLK Thu, Aug 22, 2019 61.00 61.71 59.51 59.84
3783 NYSE WLK Wed, Aug 21, 2019 62.68 63.01 60.60 60.86
3782 NYSE WLK Tue, Aug 20, 2019 62.57 62.89 61.44 61.88
3781 NYSE WLK Mon, Aug 19, 2019 62.88 63.02 61.39 62.88
3780 NYSE WLK Fri, Aug 16, 2019 60.05 61.44 60.05 61.25
3779 NYSE WLK Thu, Aug 15, 2019 61.59 61.59 59.84 60.60
3778 NYSE WLK Wed, Aug 14, 2019 60.06 61.51 60.06 60.98
3777 NYSE WLK Tue, Aug 13, 2019 60.21 64.06 59.62 62.78
3776 NYSE WLK Mon, Aug 12, 2019 61.38 61.38 60.11 60.37
3775 NYSE WLK Fri, Aug 9, 2019 63.15 63.15 61.01 61.57
3774 NYSE WLK Thu, Aug 8, 2019 63.06 64.67 62.72 63.26
3773 NYSE WLK Wed, Aug 7, 2019 61.86 62.89 60.90 62.26
3772 NYSE WLK Tue, Aug 6, 2019 67.06 67.06 61.43 63.05
3771 NYSE WLK Mon, Aug 5, 2019 61.22 62.18 60.08 61.92
3770 NYSE WLK Fri, Aug 2, 2019 64.55 64.82 62.00 62.28
3769 NYSE WLK Thu, Aug 1, 2019 67.57 67.82 64.52 64.83
3768 NYSE WLK Wed, Jul 31, 2019 67.74 69.48 66.81 67.57
3767 NYSE WLK Tue, Jul 30, 2019 66.63 67.88 65.97 67.67
3766 NYSE WLK Mon, Jul 29, 2019 68.89 68.89 66.76 67.30
3765 NYSE WLK Fri, Jul 26, 2019 68.40 69.15 67.25 68.96
3764 NYSE WLK Thu, Jul 25, 2019 69.00 69.21 67.65 68.38
3763 NYSE WLK Wed, Jul 24, 2019 68.81 69.95 68.80 69.34
3762 NYSE WLK Tue, Jul 23, 2019 68.09 69.37 68.00 68.95
3761 NYSE WLK Mon, Jul 22, 2019 67.27 68.47 67.15 67.47
3760 NYSE WLK Fri, Jul 19, 2019 68.08 68.66 67.66 68.44
3759 NYSE WLK Thu, Jul 18, 2019 67.57 68.73 67.57 68.15
3758 NYSE WLK Wed, Jul 17, 2019 69.37 69.37 67.95 68.05
3757 NYSE WLK Tue, Jul 16, 2019 68.50 70.39 68.34 69.35
3756 NYSE WLK Mon, Jul 15, 2019 68.93 69.12 68.14 68.75
3755 NYSE WLK Fri, Jul 12, 2019 67.45 69.17 67.35 68.85
3754 NYSE WLK Thu, Jul 11, 2019 68.23 68.42 66.04 67.10
3753 NYSE WLK Wed, Jul 10, 2019 68.51 69.09 67.56 68.24
3752 NYSE WLK Tue, Jul 9, 2019 68.03 68.51 67.36 68.32
3751 NYSE WLK Mon, Jul 8, 2019 69.52 69.82 67.89 68.36
3750 NYSE WLK Fri, Jul 5, 2019 67.65 70.00 67.34 69.73
3749 NYSE WLK Wed, Jul 3, 2019 66.99 68.18 66.28 68.14
3748 NYSE WLK Tue, Jul 2, 2019 69.41 69.41 66.76 66.94
3747 NYSE WLK Mon, Jul 1, 2019 65.00 70.56 64.40 69.99
3746 NYSE WLK Fri, Jun 28, 2019 69.68 70.30 68.65 69.46
3745 NYSE WLK Thu, Jun 27, 2019 67.42 69.33 67.22 69.13
3744 NYSE WLK Wed, Jun 26, 2019 66.54 68.25 66.27 67.51
3743 NYSE WLK Tue, Jun 25, 2019 66.04 66.39 65.24 66.12
3742 NYSE WLK Mon, Jun 24, 2019 66.42 66.96 65.88 66.03
3741 NYSE WLK Fri, Jun 21, 2019 64.27 67.41 64.01 66.46
3740 NYSE WLK Thu, Jun 20, 2019 64.11 64.36 62.73 64.33
3739 NYSE WLK Wed, Jun 19, 2019 64.02 64.57 62.67 62.69
3738 NYSE WLK Tue, Jun 18, 2019 64.23 65.32 63.71 64.41
3737 NYSE WLK Mon, Jun 17, 2019 63.63 63.74 62.23 63.27
3736 NYSE WLK Fri, Jun 14, 2019 63.84 64.24 63.36 63.76
3735 NYSE WLK Thu, Jun 13, 2019 62.77 64.03 62.70 64.01
3734 NYSE WLK Wed, Jun 12, 2019 61.99 62.62 61.37 62.10
3733 NYSE WLK Tue, Jun 11, 2019 64.01 64.86 62.47 62.54
3732 NYSE WLK Mon, Jun 10, 2019 64.14 64.73 62.84 63.07
3731 NYSE WLK Fri, Jun 7, 2019 63.61 64.25 62.39 63.47
3730 NYSE WLK Thu, Jun 6, 2019 63.37 63.51 62.09 63.19
3729 NYSE WLK Wed, Jun 5, 2019 63.91 63.91 61.51 63.45
3728 NYSE WLK Tue, Jun 4, 2019 60.53 63.59 60.39 63.54
3727 NYSE WLK Mon, Jun 3, 2019 57.58 59.78 57.40 59.53
3726 NYSE WLK Fri, May 31, 2019 57.83 58.56 57.20 57.29
3725 NYSE WLK Thu, May 30, 2019 59.60 59.97 58.81 58.93
3724 NYSE WLK Wed, May 29, 2019 59.27 60.23 58.44 59.92
3723 NYSE WLK Tue, May 28, 2019 60.53 60.90 59.89 60.15
3722 NYSE WLK Fri, May 24, 2019 61.61 61.95 59.77 60.27
3721 NYSE WLK Thu, May 23, 2019 61.24 61.44 60.00 60.99
3720 NYSE WLK Wed, May 22, 2019 64.18 64.62 62.78 62.86
3719 NYSE WLK Tue, May 21, 2019 63.62 64.92 63.62 64.74
3718 NYSE WLK Mon, May 20, 2019 61.61 63.34 61.61 62.98
3717 NYSE WLK Fri, May 17, 2019 62.57 63.47 62.02 62.25
3716 NYSE WLK Thu, May 16, 2019 62.10 63.68 61.82 63.12
3715 NYSE WLK Wed, May 15, 2019 60.44 61.61 60.00 61.22
3714 NYSE WLK Tue, May 14, 2019 58.85 60.31 58.71 59.82
3713 NYSE WLK Mon, May 13, 2019 59.93 60.02 57.39 58.34
3712 NYSE WLK Fri, May 10, 2019 60.44 61.51 59.46 61.00
3711 NYSE WLK Thu, May 9, 2019 59.13 61.67 57.71 60.50
3710 NYSE WLK Wed, May 8, 2019 60.47 60.65 59.16 60.17
3709 NYSE WLK Tue, May 7, 2019 61.28 61.60 59.91 60.61
3708 NYSE WLK Mon, May 6, 2019 61.58 62.93 61.34 61.99
3707 NYSE WLK Fri, May 3, 2019 61.76 63.98 61.59 63.50
3706 NYSE WLK Thu, May 2, 2019 65.94 67.00 61.11 61.66
3705 NYSE WLK Wed, May 1, 2019 69.63 69.76 67.75 67.81
3704 NYSE WLK Tue, Apr 30, 2019 71.70 72.10 69.35 69.75
3703 NYSE WLK Mon, Apr 29, 2019 72.25 72.84 71.35 71.50
3702 NYSE WLK Fri, Apr 26, 2019 71.71 72.46 71.08 72.32
3701 NYSE WLK Thu, Apr 25, 2019 73.39 73.39 71.72 71.78
3700 NYSE WLK Wed, Apr 24, 2019 75.31 75.89 73.48 73.72
3699 NYSE WLK Tue, Apr 23, 2019 74.99 76.14 74.16 75.56
3698 NYSE WLK Mon, Apr 22, 2019 75.36 75.76 74.57 74.79
3697 NYSE WLK Thu, Apr 18, 2019 76.06 76.39 74.95 75.21
3696 NYSE WLK Wed, Apr 17, 2019 76.79 77.34 75.57 75.76
3695 NYSE WLK Tue, Apr 16, 2019 77.61 78.08 76.50 76.91
3694 NYSE WLK Mon, Apr 15, 2019 77.89 77.95 76.56 77.56
3693 NYSE WLK Fri, Apr 12, 2019 75.94 76.61 75.06 76.40
3692 NYSE WLK Thu, Apr 11, 2019 74.74 75.31 74.05 74.66
3691 NYSE WLK Wed, Apr 10, 2019 74.44 75.39 73.35 74.93
3690 NYSE WLK Tue, Apr 9, 2019 75.38 75.40 74.21 74.64
3689 NYSE WLK Mon, Apr 8, 2019 76.09 76.20 74.59 75.79
3688 NYSE WLK Fri, Apr 5, 2019 74.94 76.18 73.96 76.14
3687 NYSE WLK Thu, Apr 4, 2019 71.69 74.65 71.12 74.52
3686 NYSE WLK Wed, Apr 3, 2019 71.40 72.93 70.91 71.54
3685 NYSE WLK Tue, Apr 2, 2019 69.75 71.19 69.02 70.59
3684 NYSE WLK Mon, Apr 1, 2019 68.86 70.30 68.62 69.79
3683 NYSE WLK Fri, Mar 29, 2019 67.72 68.73 67.54 67.86
3682 NYSE WLK Thu, Mar 28, 2019 66.84 68.12 66.74 67.62
3681 NYSE WLK Wed, Mar 27, 2019 67.30 68.25 66.57 66.82
3680 NYSE WLK Tue, Mar 26, 2019 65.19 66.83 64.69 66.79
3679 NYSE WLK Mon, Mar 25, 2019 66.17 66.90 64.48 64.87
3678 NYSE WLK Fri, Mar 22, 2019 68.86 69.00 65.68 66.08
3677 NYSE WLK Thu, Mar 21, 2019 68.15 70.36 68.15 69.70
3676 NYSE WLK Wed, Mar 20, 2019 68.86 70.02 68.34 69.06
3675 NYSE WLK Tue, Mar 19, 2019 70.74 71.46 69.05 69.31
3674 NYSE WLK Mon, Mar 18, 2019 69.36 70.13 68.43 70.11
3673 NYSE WLK Fri, Mar 15, 2019 68.82 69.75 68.45 69.22
3672 NYSE WLK Thu, Mar 14, 2019 69.03 69.32 68.16 68.71
3671 NYSE WLK Wed, Mar 13, 2019 69.24 69.77 68.23 69.40
3670 NYSE WLK Tue, Mar 12, 2019 69.05 69.47 68.47 68.55
3669 NYSE WLK Mon, Mar 11, 2019 67.96 69.28 67.50 68.77
3668 NYSE WLK Fri, Mar 8, 2019 68.03 68.19 66.64 67.53
3667 NYSE WLK Thu, Mar 7, 2019 70.70 71.18 68.15 68.91
3666 NYSE WLK Wed, Mar 6, 2019 69.89 72.02 69.54 70.66
3665 NYSE WLK Tue, Mar 5, 2019 70.57 70.95 69.41 69.44
3664 NYSE WLK Mon, Mar 4, 2019 70.17 71.18 68.88 70.64
3663 NYSE WLK Fri, Mar 1, 2019 70.64 71.86 68.30 69.65
3662 NYSE WLK Thu, Feb 28, 2019 72.28 72.65 69.66 69.87
3661 NYSE WLK Wed, Feb 27, 2019 72.08 72.55 71.51 72.46
3660 NYSE WLK Tue, Feb 26, 2019 72.50 73.49 72.19 72.21
3659 NYSE WLK Mon, Feb 25, 2019 75.78 76.32 73.45 73.58
3658 NYSE WLK Fri, Feb 22, 2019 75.13 76.29 75.01 75.57
3657 NYSE WLK Thu, Feb 21, 2019 79.31 79.81 74.52 74.77
3656 NYSE WLK Wed, Feb 20, 2019 76.50 79.91 74.01 79.89
3655 NYSE WLK Tue, Feb 19, 2019 72.36 79.89 72.30 77.03
3654 NYSE WLK Fri, Feb 15, 2019 78.86 81.04 78.62 80.88
3653 NYSE WLK Thu, Feb 14, 2019 77.11 78.39 77.02 77.80
3652 NYSE WLK Wed, Feb 13, 2019 77.88 78.22 77.19 77.55
3651 NYSE WLK Tue, Feb 12, 2019 75.70 77.82 75.59 77.32
3650 NYSE WLK Mon, Feb 11, 2019 73.53 75.06 73.46 74.82
3649 NYSE WLK Fri, Feb 8, 2019 73.42 74.34 72.34 73.54
3648 NYSE WLK Thu, Feb 7, 2019 75.09 75.78 73.09 73.96
3647 NYSE WLK Wed, Feb 6, 2019 76.81 77.44 75.67 75.77
3646 NYSE WLK Tue, Feb 5, 2019 75.31 77.96 75.31 77.85
3645 NYSE WLK Mon, Feb 4, 2019 75.48 75.84 74.36 75.43
3644 NYSE WLK Fri, Feb 1, 2019 73.78 75.95 73.45 75.34
3643 NYSE WLK Thu, Jan 31, 2019 75.93 76.01 73.55 73.90
3642 NYSE WLK Wed, Jan 30, 2019 75.96 77.44 74.10 77.03
3641 NYSE WLK Tue, Jan 29, 2019 74.19 77.30 74.19 76.72
3640 NYSE WLK Mon, Jan 28, 2019 74.00 74.74 73.53 74.37
3639 NYSE WLK Fri, Jan 25, 2019 73.58 75.37 73.36 75.10
3638 NYSE WLK Thu, Jan 24, 2019 72.48 73.00 72.35 72.74
3637 NYSE WLK Wed, Jan 23, 2019 74.93 75.32 72.31 72.50
3636 NYSE WLK Tue, Jan 22, 2019 77.00 77.39 74.06 74.93
3635 NYSE WLK Fri, Jan 18, 2019 76.21 79.23 76.21 77.83
3634 NYSE WLK Thu, Jan 17, 2019 74.18 76.08 73.62 75.51
3633 NYSE WLK Wed, Jan 16, 2019 73.07 76.08 72.75 74.71
3632 NYSE WLK Tue, Jan 15, 2019 74.00 74.37 71.94 72.59
3631 NYSE WLK Mon, Jan 14, 2019 74.27 75.22 73.31 74.12
3630 NYSE WLK Fri, Jan 11, 2019 75.02 75.75 74.52 75.07
3629 NYSE WLK Thu, Jan 10, 2019 74.44 75.85 73.01 75.74
3628 NYSE WLK Wed, Jan 9, 2019 75.01 76.09 74.45 75.36
3627 NYSE WLK Tue, Jan 8, 2019 72.50 74.77 71.95 74.52
3626 NYSE WLK Mon, Jan 7, 2019 69.53 70.88 68.15 69.93
3625 NYSE WLK Fri, Jan 4, 2019 67.34 69.84 67.04 69.57
3624 NYSE WLK Thu, Jan 3, 2019 67.18 67.79 65.17 65.23
3623 NYSE WLK Wed, Jan 2, 2019 65.00 68.36 64.99 67.46
3622 NYSE WLK Mon, Dec 31, 2018 65.07 66.20 64.68 66.17
3621 NYSE WLK Fri, Dec 28, 2018 65.04 65.37 63.97 64.59
3620 NYSE WLK Thu, Dec 27, 2018 62.45 65.01 62.13 65.00
3619 NYSE WLK Wed, Dec 26, 2018 60.71 63.70 59.78 63.59
3618 NYSE WLK Mon, Dec 24, 2018 60.93 62.55 60.20 60.82
3617 NYSE WLK Fri, Dec 21, 2018 61.46 62.75 61.21 61.40
3616 NYSE WLK Thu, Dec 20, 2018 61.84 64.14 61.32 61.66
3615 NYSE WLK Wed, Dec 19, 2018 64.43 65.39 62.04 62.37
3614 NYSE WLK Tue, Dec 18, 2018 65.31 67.00 64.40 64.49
3613 NYSE WLK Mon, Dec 17, 2018 64.24 66.70 63.78 65.00
3612 NYSE WLK Fri, Dec 14, 2018 66.12 67.32 63.96 64.63
3611 NYSE WLK Thu, Dec 13, 2018 67.66 68.79 66.32 67.00
3610 NYSE WLK Wed, Dec 12, 2018 67.78 68.73 66.82 67.36
3609 NYSE WLK Tue, Dec 11, 2018 68.21 68.60 65.07 66.31
3608 NYSE WLK Mon, Dec 10, 2018 67.93 68.32 64.55 66.82
3607 NYSE WLK Fri, Dec 7, 2018 71.33 73.64 68.23 68.37
3606 NYSE WLK Thu, Dec 6, 2018 67.88 70.45 67.46 70.28
3605 NYSE WLK Tue, Dec 4, 2018 73.67 74.05 70.27 70.41
3604 NYSE WLK Mon, Dec 3, 2018 74.41 75.25 72.55 73.82
3603 NYSE WLK Fri, Nov 30, 2018 71.31 72.60 71.11 72.49
3602 NYSE WLK Thu, Nov 29, 2018 70.16 72.41 70.05 71.82
3601 NYSE WLK Wed, Nov 28, 2018 68.68 70.24 67.59 70.13
3600 NYSE WLK Tue, Nov 27, 2018 68.54 69.47 68.00 68.71
3599 NYSE WLK Mon, Nov 26, 2018 68.40 69.97 68.40 69.46
3598 NYSE WLK Fri, Nov 23, 2018 68.30 69.53 67.66 68.41
3597 NYSE WLK Wed, Nov 21, 2018 68.06 70.28 67.92 69.39
3596 NYSE WLK Tue, Nov 20, 2018 68.33 68.74 66.91 67.50
3595 NYSE WLK Mon, Nov 19, 2018 71.06 71.85 69.39 69.69
3594 NYSE WLK Fri, Nov 16, 2018 71.53 73.50 70.96 71.74
3593 NYSE WLK Thu, Nov 15, 2018 70.74 72.11 69.80 71.70
3592 NYSE WLK Wed, Nov 14, 2018 71.67 72.70 70.33 71.39
3591 NYSE WLK Tue, Nov 13, 2018 73.77 74.61 70.99 71.10
3590 NYSE WLK Mon, Nov 12, 2018 76.12 76.28 73.66 74.03
3589 NYSE WLK Fri, Nov 9, 2018 76.10 77.07 75.54 75.90
3588 NYSE WLK Thu, Nov 8, 2018 78.75 79.37 77.16 77.46
3587 NYSE WLK Wed, Nov 7, 2018 79.54 79.79 77.15 79.59
3586 NYSE WLK Tue, Nov 6, 2018 78.03 81.49 75.80 79.07
3585 NYSE WLK Mon, Nov 5, 2018 74.58 75.61 73.36 74.51
3584 NYSE WLK Fri, Nov 2, 2018 75.44 75.82 74.08 74.24
3583 NYSE WLK Thu, Nov 1, 2018 72.55 75.16 71.64 74.90
3582 NYSE WLK Wed, Oct 31, 2018 71.61 73.10 71.18 71.30
3581 NYSE WLK Tue, Oct 30, 2018 70.08 71.73 68.83 70.74
3580 NYSE WLK Mon, Oct 29, 2018 72.23 72.32 69.53 70.33
3579 NYSE WLK Fri, Oct 26, 2018 69.61 71.68 68.40 71.01
3578 NYSE WLK Thu, Oct 25, 2018 70.22 71.19 69.35 70.76
3577 NYSE WLK Wed, Oct 24, 2018 72.85 73.50 69.29 69.30
3576 NYSE WLK Tue, Oct 23, 2018 73.52 74.20 72.18 72.78
3575 NYSE WLK Mon, Oct 22, 2018 77.10 77.32 74.69 75.21
3574 NYSE WLK Fri, Oct 19, 2018 77.16 77.85 76.07 76.57
3573 NYSE WLK Thu, Oct 18, 2018 78.34 80.02 76.87 77.17
3572 NYSE WLK Wed, Oct 17, 2018 80.55 80.83 77.77 78.80
3571 NYSE WLK Tue, Oct 16, 2018 79.80 80.74 79.13 80.32
3570 NYSE WLK Mon, Oct 15, 2018 80.76 81.58 79.29 79.30
3569 NYSE WLK Fri, Oct 12, 2018 80.57 82.48 80.16 80.83
3568 NYSE WLK Thu, Oct 11, 2018 80.07 82.08 79.53 79.54
3567 NYSE WLK Wed, Oct 10, 2018 80.48 82.14 79.31 80.27
3566 NYSE WLK Tue, Oct 9, 2018 83.13 83.69 80.21 80.62
3565 NYSE WLK Mon, Oct 8, 2018 82.84 85.95 82.77 83.31
3564 NYSE WLK Fri, Oct 5, 2018 81.00 82.08 80.68 81.65
3563 NYSE WLK Thu, Oct 4, 2018 81.75 82.40 80.40 80.85
3562 NYSE WLK Wed, Oct 3, 2018 82.56 82.80 79.08 81.54
3561 NYSE WLK Tue, Oct 2, 2018 83.83 84.50 82.90 83.39
3560 NYSE WLK Mon, Oct 1, 2018 83.11 85.24 83.11 83.63
3559 NYSE WLK Fri, Sep 28, 2018 83.74 83.80 81.88 83.11
3558 NYSE WLK Thu, Sep 27, 2018 85.87 85.87 83.98 84.27
3557 NYSE WLK Wed, Sep 26, 2018 85.55 87.65 85.41 86.00
3556 NYSE WLK Tue, Sep 25, 2018 85.75 86.98 85.27 86.44
3555 NYSE WLK Mon, Sep 24, 2018 86.01 86.45 84.81 86.16
3554 NYSE WLK Fri, Sep 21, 2018 86.43 87.26 85.47 85.95
3553 NYSE WLK Thu, Sep 20, 2018 85.02 87.41 85.02 86.26
3552 NYSE WLK Wed, Sep 19, 2018 81.96 85.34 81.94 83.93
3551 NYSE WLK Tue, Sep 18, 2018 86.00 86.00 83.77 83.90
3550 NYSE WLK Mon, Sep 17, 2018 86.56 87.48 85.69 85.79
3549 NYSE WLK Fri, Sep 14, 2018 86.04 87.67 85.28 86.93
3548 NYSE WLK Thu, Sep 13, 2018 86.20 88.02 85.63 86.01
3547 NYSE WLK Wed, Sep 12, 2018 86.52 86.78 85.86 85.96
3546 NYSE WLK Tue, Sep 11, 2018 86.52 88.05 85.74 86.68
3545 NYSE WLK Mon, Sep 10, 2018 89.54 89.89 86.97 87.31
3544 NYSE WLK Fri, Sep 7, 2018 90.09 90.64 87.36 89.21
3543 NYSE WLK Thu, Sep 6, 2018 92.95 95.00 91.49 92.00
3542 NYSE WLK Wed, Sep 5, 2018 92.80 93.78 91.59 93.13
3541 NYSE WLK Tue, Sep 4, 2018 94.03 94.35 92.14 92.80
3540 NYSE WLK Fri, Aug 31, 2018 94.24 95.35 93.78 94.57
3539 NYSE WLK Thu, Aug 30, 2018 96.26 96.49 94.67 94.78
3538 NYSE WLK Wed, Aug 29, 2018 97.26 97.61 95.64 96.55
3537 NYSE WLK Tue, Aug 28, 2018 98.34 98.99 97.45 98.04
3536 NYSE WLK Mon, Aug 27, 2018 97.18 98.49 97.18 97.98
3535 NYSE WLK Fri, Aug 24, 2018 97.00 97.86 96.55 96.94
3534 NYSE WLK Thu, Aug 23, 2018 97.95 98.07 95.66 96.45
3533 NYSE WLK Wed, Aug 22, 2018 97.96 98.57 96.90 98.18
3532 NYSE WLK Tue, Aug 21, 2018 96.57 97.70 96.52 97.31
3531 NYSE WLK Mon, Aug 20, 2018 95.94 97.14 95.65 96.59
3530 NYSE WLK Fri, Aug 17, 2018 96.72 96.72 94.93 95.59
3529 NYSE WLK Thu, Aug 16, 2018 94.85 97.29 94.36 96.93
3528 NYSE WLK Wed, Aug 15, 2018 96.27 96.27 92.77 93.88
3527 NYSE WLK Tue, Aug 14, 2018 97.89 99.05 97.61 97.69
3526 NYSE WLK Mon, Aug 13, 2018 98.15 99.24 97.03 97.32
3525 NYSE WLK Fri, Aug 10, 2018 99.25 99.55 96.37 98.06
3524 NYSE WLK Thu, Aug 9, 2018 99.84 101.11 99.50 100.26
3523 NYSE WLK Wed, Aug 8, 2018 100.23 100.72 98.15 99.85
3522 NYSE WLK Tue, Aug 7, 2018 100.67 103.11 100.17 100.32
3521 NYSE WLK Mon, Aug 6, 2018 98.74 100.80 98.23 100.37
3520 NYSE WLK Fri, Aug 3, 2018 98.83 100.79 98.34 99.50
3519 NYSE WLK Thu, Aug 2, 2018 101.54 101.54 96.66 98.84
3518 NYSE WLK Wed, Aug 1, 2018 107.20 109.87 106.84 107.56
3517 NYSE WLK Tue, Jul 31, 2018 105.62 107.52 105.42 107.22
3516 NYSE WLK Mon, Jul 30, 2018 105.63 106.50 104.83 105.00
3515 NYSE WLK Fri, Jul 27, 2018 106.41 106.81 103.97 104.74
3514 NYSE WLK Thu, Jul 26, 2018 105.05 107.06 105.01 106.18
3513 NYSE WLK Wed, Jul 25, 2018 105.02 105.65 102.63 105.53
3512 NYSE WLK Tue, Jul 24, 2018 106.70 108.00 104.95 105.23
3511 NYSE WLK Mon, Jul 23, 2018 108.00 108.00 106.26 106.46
3510 NYSE WLK Fri, Jul 20, 2018 106.96 108.27 106.42 107.63
3509 NYSE WLK Thu, Jul 19, 2018 107.61 107.95 106.60 107.39
3508 NYSE WLK Wed, Jul 18, 2018 107.64 109.13 107.41 108.18
3507 NYSE WLK Tue, Jul 17, 2018 105.71 107.92 105.44 107.72
3506 NYSE WLK Mon, Jul 16, 2018 107.43 107.98 104.92 105.51
3505 NYSE WLK Fri, Jul 13, 2018 107.30 108.57 107.16 107.88
3504 NYSE WLK Thu, Jul 12, 2018 107.34 108.69 105.83 107.19
3503 NYSE WLK Wed, Jul 11, 2018 108.61 109.60 105.91 107.00
3502 NYSE WLK Tue, Jul 10, 2018 111.89 112.85 110.69 111.60
3501 NYSE WLK Mon, Jul 9, 2018 110.39 111.67 109.59 111.52
3500 NYSE WLK Fri, Jul 6, 2018 108.24 109.83 107.72 109.46
3499 NYSE WLK Thu, Jul 5, 2018 108.23 108.80 107.24 108.80
3498 NYSE WLK Tue, Jul 3, 2018 108.90 109.10 107.05 107.27
3497 NYSE WLK Mon, Jul 2, 2018 108.00 108.26 105.88 108.16
3496 NYSE WLK Fri, Jun 29, 2018 107.00 109.08 106.71 107.63
3495 NYSE WLK Thu, Jun 28, 2018 105.84 106.55 104.72 106.55
3494 NYSE WLK Wed, Jun 27, 2018 105.53 107.66 105.48 106.05
3493 NYSE WLK Tue, Jun 26, 2018 105.57 106.28 103.98 105.14
3492 NYSE WLK Mon, Jun 25, 2018 107.14 107.16 103.90 105.44
3491 NYSE WLK Fri, Jun 22, 2018 108.52 109.33 106.87 107.86
3490 NYSE WLK Thu, Jun 21, 2018 105.80 107.58 105.00 105.87
3489 NYSE WLK Wed, Jun 20, 2018 105.93 106.00 103.33 104.99
3488 NYSE WLK Tue, Jun 19, 2018 107.78 107.78 103.71 105.61
3487 NYSE WLK Mon, Jun 18, 2018 108.94 109.91 108.58 109.53
3486 NYSE WLK Fri, Jun 15, 2018 111.79 112.00 108.46 110.00
3485 NYSE WLK Thu, Jun 14, 2018 112.93 113.57 111.73 112.29
3484 NYSE WLK Wed, Jun 13, 2018 114.75 114.98 111.65 112.43
3483 NYSE WLK Tue, Jun 12, 2018 115.52 116.33 113.75 114.51
3482 NYSE WLK Mon, Jun 11, 2018 117.55 117.56 115.03 115.84
3481 NYSE WLK Fri, Jun 8, 2018 117.31 117.76 116.53 117.67
3480 NYSE WLK Thu, Jun 7, 2018 119.09 119.77 116.97 117.63
3479 NYSE WLK Wed, Jun 6, 2018 118.29 119.15 117.61 119.01
3478 NYSE WLK Tue, Jun 5, 2018 116.26 117.73 116.21 117.55
3477 NYSE WLK Mon, Jun 4, 2018 116.89 117.58 115.87 116.54
3476 NYSE WLK Fri, Jun 1, 2018 117.37 118.47 115.39 116.58
3475 NYSE WLK Thu, May 31, 2018 118.95 119.50 115.66 115.73
3474 NYSE WLK Wed, May 30, 2018 119.25 119.69 118.23 118.94
3473 NYSE WLK Tue, May 29, 2018 117.30 120.65 117.30 117.92
3472 NYSE WLK Fri, May 25, 2018 119.66 120.23 117.25 118.26
3471 NYSE WLK Thu, May 24, 2018 120.88 122.76 118.97 120.53
3470 NYSE WLK Wed, May 23, 2018 121.00 122.39 119.72 121.42
3469 NYSE WLK Tue, May 22, 2018 124.01 124.30 121.97 122.14
3468 NYSE WLK Mon, May 21, 2018 122.56 123.85 121.50 123.67
3467 NYSE WLK Fri, May 18, 2018 120.86 122.35 120.86 121.28
3466 NYSE WLK Thu, May 17, 2018 121.01 121.88 120.11 120.83
3465 NYSE WLK Wed, May 16, 2018 119.14 121.94 119.14 120.73
3464 NYSE WLK Tue, May 15, 2018 117.00 119.34 116.41 119.00
3463 NYSE WLK Mon, May 14, 2018 117.80 118.36 117.32 117.69
3462 NYSE WLK Fri, May 11, 2018 116.88 117.89 116.56 117.11
3461 NYSE WLK Thu, May 10, 2018 114.33 117.83 113.74 116.40
3460 NYSE WLK Wed, May 9, 2018 109.60 114.13 109.37 113.90
3459 NYSE WLK Tue, May 8, 2018 106.96 109.12 106.64 108.50
3458 NYSE WLK Mon, May 7, 2018 107.28 108.25 106.55 106.85
3457 NYSE WLK Fri, May 4, 2018 104.64 106.99 104.03 106.61
3456 NYSE WLK Thu, May 3, 2018 107.90 108.02 102.08 105.17
3455 NYSE WLK Wed, May 2, 2018 106.94 110.13 106.74 107.95
3454 NYSE WLK Tue, May 1, 2018 106.25 106.88 105.28 106.55
3453 NYSE WLK Mon, Apr 30, 2018 108.13 110.18 106.65 106.97
3452 NYSE WLK Fri, Apr 27, 2018 108.57 109.00 105.91 107.57
3451 NYSE WLK Thu, Apr 26, 2018 107.22 108.63 106.70 108.46
3450 NYSE WLK Wed, Apr 25, 2018 108.14 108.25 106.47 107.05
3449 NYSE WLK Tue, Apr 24, 2018 111.65 112.59 106.19 108.10
3448 NYSE WLK Mon, Apr 23, 2018 109.65 112.86 109.65 111.22
3447 NYSE WLK Fri, Apr 20, 2018 111.95 112.16 109.26 109.95
3446 NYSE WLK Thu, Apr 19, 2018 114.32 114.32 111.74 112.85
3445 NYSE WLK Wed, Apr 18, 2018 112.45 115.15 112.45 114.62
3444 NYSE WLK Tue, Apr 17, 2018 111.25 112.70 111.13 111.57
3443 NYSE WLK Mon, Apr 16, 2018 109.36 110.53 107.88 110.33
3442 NYSE WLK Fri, Apr 13, 2018 109.64 109.92 107.67 108.62
3441 NYSE WLK Thu, Apr 12, 2018 108.60 109.38 106.75 108.92
3440 NYSE WLK Wed, Apr 11, 2018 108.32 108.43 106.55 108.07
3439 NYSE WLK Tue, Apr 10, 2018 108.49 110.28 107.96 109.01
3438 NYSE WLK Mon, Apr 9, 2018 105.89 108.15 104.86 106.17
3437 NYSE WLK Fri, Apr 6, 2018 108.91 110.11 105.96 107.19
3436 NYSE WLK Thu, Apr 5, 2018 108.19 111.50 108.19 110.63
3435 NYSE WLK Wed, Apr 4, 2018 102.97 108.03 102.63 107.71
3434 NYSE WLK Tue, Apr 3, 2018 109.77 110.26 108.24 109.69
3433 NYSE WLK Mon, Apr 2, 2018 110.76 111.79 107.30 108.82
3432 NYSE WLK Thu, Mar 29, 2018 108.83 111.76 108.04 111.15
3431 NYSE WLK Wed, Mar 28, 2018 113.85 113.85 107.95 108.01
3430 NYSE WLK Tue, Mar 27, 2018 115.28 116.63 112.76 113.34
3429 NYSE WLK Mon, Mar 26, 2018 114.12 115.06 111.88 114.31
3428 NYSE WLK Fri, Mar 23, 2018 113.80 115.81 112.61 112.65
3427 NYSE WLK Thu, Mar 22, 2018 115.93 117.13 112.85 113.36
3426 NYSE WLK Wed, Mar 21, 2018 114.93 118.47 114.93 117.61
3425 NYSE WLK Tue, Mar 20, 2018 115.10 116.58 114.65 114.88
3424 NYSE WLK Mon, Mar 19, 2018 115.39 115.57 113.33 114.43
3423 NYSE WLK Fri, Mar 16, 2018 115.57 116.44 114.39 115.87
3422 NYSE WLK Thu, Mar 15, 2018 116.58 116.78 115.25 115.52
3421 NYSE WLK Wed, Mar 14, 2018 118.67 118.92 115.76 116.35
3420 NYSE WLK Tue, Mar 13, 2018 118.90 119.94 117.65 118.14
3419 NYSE WLK Mon, Mar 12, 2018 120.12 121.30 117.66 118.08
3418 NYSE WLK Fri, Mar 9, 2018 117.76 120.28 117.06 119.95
3417 NYSE WLK Thu, Mar 8, 2018 117.81 118.47 115.11 116.37
3416 NYSE WLK Wed, Mar 7, 2018 115.66 118.35 114.85 117.83
3415 NYSE WLK Tue, Mar 6, 2018 114.72 117.37 114.72 117.16
3414 NYSE WLK Mon, Mar 5, 2018 108.35 114.17 108.28 114.02
3413 NYSE WLK Fri, Mar 2, 2018 106.04 109.60 105.24 109.25
3412 NYSE WLK Thu, Mar 1, 2018 108.15 110.20 106.01 106.98
3411 NYSE WLK Wed, Feb 28, 2018 111.13 111.75 108.24 108.26
3410 NYSE WLK Tue, Feb 27, 2018 112.00 112.12 110.72 111.09
3409 NYSE WLK Mon, Feb 26, 2018 111.57 112.43 110.39 112.19
3408 NYSE WLK Fri, Feb 23, 2018 111.57 111.83 110.24 111.19
3407 NYSE WLK Thu, Feb 22, 2018 109.35 111.90 108.46 111.04
3406 NYSE WLK Wed, Feb 21, 2018 106.98 110.86 106.86 108.49
3405 NYSE WLK Tue, Feb 20, 2018 104.30 107.90 99.35 106.96
3404 NYSE WLK Fri, Feb 16, 2018 108.50 109.08 106.42 106.76
3403 NYSE WLK Thu, Feb 15, 2018 111.29 111.49 107.28 109.24
3402 NYSE WLK Wed, Feb 14, 2018 106.62 110.61 106.62 110.07
3401 NYSE WLK Tue, Feb 13, 2018 105.86 108.45 104.49 107.58
3400 NYSE WLK Mon, Feb 12, 2018 103.87 106.60 103.68 106.23
3399 NYSE WLK Fri, Feb 9, 2018 103.81 103.81 98.32 102.66
3398 NYSE WLK Thu, Feb 8, 2018 107.20 107.61 101.79 102.09
3397 NYSE WLK Wed, Feb 7, 2018 107.57 108.80 106.25 106.92
3396 NYSE WLK Tue, Feb 6, 2018 100.91 108.53 100.29 108.21
3395 NYSE WLK Mon, Feb 5, 2018 105.44 107.92 102.14 103.00
3394 NYSE WLK Fri, Feb 2, 2018 110.47 110.59 105.45 106.41
3393 NYSE WLK Thu, Feb 1, 2018 112.57 113.31 110.66 110.99
3392 NYSE WLK Wed, Jan 31, 2018 112.12 114.03 111.45 112.60
3391 NYSE WLK Tue, Jan 30, 2018 111.81 112.15 109.84 111.08
3390 NYSE WLK Mon, Jan 29, 2018 114.35 114.35 111.63 112.67
3389 NYSE WLK Fri, Jan 26, 2018 113.75 115.19 112.77 114.16
3388 NYSE WLK Thu, Jan 25, 2018 111.96 114.23 111.96 113.25
3387 NYSE WLK Wed, Jan 24, 2018 111.76 113.00 110.02 111.14
3386 NYSE WLK Tue, Jan 23, 2018 110.78 111.25 110.21 111.12
3385 NYSE WLK Mon, Jan 22, 2018 109.74 110.09 109.30 109.86
3384 NYSE WLK Fri, Jan 19, 2018 108.77 110.24 108.40 110.13
3383 NYSE WLK Thu, Jan 18, 2018 108.50 108.62 106.51 108.01
3382 NYSE WLK Wed, Jan 17, 2018 111.31 111.88 108.45 108.77
3381 NYSE WLK Tue, Jan 16, 2018 113.51 113.51 109.10 110.40
3380 NYSE WLK Fri, Jan 12, 2018 113.44 114.34 112.60 113.94
3379 NYSE WLK Thu, Jan 11, 2018 111.30 113.31 110.94 113.25
3378 NYSE WLK Wed, Jan 10, 2018 111.39 111.40 110.05 110.46
3377 NYSE WLK Tue, Jan 9, 2018 111.86 113.42 111.17 111.49
3376 NYSE WLK Mon, Jan 8, 2018 111.08 111.72 110.11 111.64
3375 NYSE WLK Fri, Jan 5, 2018 109.69 110.98 109.21 110.79
3374 NYSE WLK Thu, Jan 4, 2018 108.59 109.11 107.96 109.10
3373 NYSE WLK Wed, Jan 3, 2018 107.99 108.52 107.23 108.13
3372 NYSE WLK Tue, Jan 2, 2018 106.97 109.10 106.82 109.09
3371 NYSE WLK Fri, Dec 29, 2017 106.99 107.51 105.61 106.53
3370 NYSE WLK Thu, Dec 28, 2017 106.11 106.47 105.22 106.44
3369 NYSE WLK Wed, Dec 27, 2017 105.91 106.35 105.01 105.68
3368 NYSE WLK Tue, Dec 26, 2017 104.62 105.85 104.32 105.51
3367 NYSE WLK Fri, Dec 22, 2017 104.77 104.86 103.85 104.65
3366 NYSE WLK Thu, Dec 21, 2017 103.73 104.96 103.12 104.55
3365 NYSE WLK Wed, Dec 20, 2017 103.61 104.24 102.95 103.53
3364 NYSE WLK Tue, Dec 19, 2017 103.30 103.78 102.66 102.90
3363 NYSE WLK Mon, Dec 18, 2017 102.08 104.08 101.85 103.32
3362 NYSE WLK Fri, Dec 15, 2017 101.71 101.73 100.56 100.69
3361 NYSE WLK Thu, Dec 14, 2017 101.68 102.58 100.65 100.96
3360 NYSE WLK Wed, Dec 13, 2017 101.22 102.21 100.86 101.51
3359 NYSE WLK Tue, Dec 12, 2017 100.85 101.54 100.48 100.88
3358 NYSE WLK Mon, Dec 11, 2017 100.28 101.66 100.06 100.64
3357 NYSE WLK Fri, Dec 8, 2017 100.02 100.70 99.24 99.78
3356 NYSE WLK Thu, Dec 7, 2017 98.11 99.57 97.39 99.37
3355 NYSE WLK Wed, Dec 6, 2017 97.75 99.00 96.87 97.69
3354 NYSE WLK Tue, Dec 5, 2017 96.87 99.39 96.43 98.41
3353 NYSE WLK Mon, Dec 4, 2017 99.71 99.71 97.13 97.19
3352 NYSE WLK Fri, Dec 1, 2017 98.48 99.40 97.02 98.54
3351 NYSE WLK Thu, Nov 30, 2017 96.39 98.12 96.07 97.93
3350 NYSE WLK Wed, Nov 29, 2017 95.49 96.21 94.23 96.09
3349 NYSE WLK Tue, Nov 28, 2017 94.62 95.59 93.80 95.34
3348 NYSE WLK Mon, Nov 27, 2017 94.54 94.54 93.12 94.19
3347 NYSE WLK Fri, Nov 24, 2017 95.35 95.51 94.11 94.59
3346 NYSE WLK Wed, Nov 22, 2017 94.49 95.99 94.43 94.79
3345 NYSE WLK Tue, Nov 21, 2017 95.10 95.35 94.05 94.41
3344 NYSE WLK Mon, Nov 20, 2017 93.57 95.14 93.30 94.30
3343 NYSE WLK Fri, Nov 17, 2017 92.85 94.17 92.45 93.51
3342 NYSE WLK Thu, Nov 16, 2017 91.16 93.17 91.14 92.69
3341 NYSE WLK Wed, Nov 15, 2017 92.32 92.41 89.93 90.59
3340 NYSE WLK Tue, Nov 14, 2017 93.03 93.59 91.40 92.75
3339 NYSE WLK Mon, Nov 13, 2017 92.31 94.88 92.27 93.95
3338 NYSE WLK Fri, Nov 10, 2017 93.33 94.40 92.43 92.99
3337 NYSE WLK Thu, Nov 9, 2017 93.53 96.15 93.05 93.40
3336 NYSE WLK Wed, Nov 8, 2017 91.83 94.08 91.20 93.95
3335 NYSE WLK Tue, Nov 7, 2017 87.59 91.71 87.59 91.62
3334 NYSE WLK Mon, Nov 6, 2017 85.90 86.21 84.89 86.02
3333 NYSE WLK Fri, Nov 3, 2017 85.78 86.07 85.14 85.77
3332 NYSE WLK Thu, Nov 2, 2017 85.81 86.25 85.26 85.62
3331 NYSE WLK Wed, Nov 1, 2017 85.90 86.69 85.29 85.93
3330 NYSE WLK Tue, Oct 31, 2017 85.84 85.92 84.52 84.91
3329 NYSE WLK Mon, Oct 30, 2017 84.30 87.22 84.30 85.63
3328 NYSE WLK Fri, Oct 27, 2017 84.85 84.92 83.61 84.57
3327 NYSE WLK Thu, Oct 26, 2017 84.93 85.12 84.12 84.85
3326 NYSE WLK Wed, Oct 25, 2017 85.25 85.45 83.46 84.51
3325 NYSE WLK Tue, Oct 24, 2017 83.90 86.28 83.54 85.60
3324 NYSE WLK Mon, Oct 23, 2017 83.77 83.97 83.17 83.26
3323 NYSE WLK Fri, Oct 20, 2017 84.39 84.70 83.71 83.82
3322 NYSE WLK Thu, Oct 19, 2017 82.75 84.08 82.28 84.00
3321 NYSE WLK Wed, Oct 18, 2017 83.65 84.04 82.63 83.10
3320 NYSE WLK Tue, Oct 17, 2017 84.42 85.10 83.62 83.65
3319 NYSE WLK Mon, Oct 16, 2017 85.00 85.33 84.00 84.24
3318 NYSE WLK Fri, Oct 13, 2017 85.44 85.86 84.22 84.42
3317 NYSE WLK Thu, Oct 12, 2017 84.09 84.88 83.62 84.49
3316 NYSE WLK Wed, Oct 11, 2017 84.31 84.57 83.58 84.50
3315 NYSE WLK Tue, Oct 10, 2017 85.55 85.55 84.19 84.29
3314 NYSE WLK Mon, Oct 9, 2017 85.10 85.17 84.50 84.72
3313 NYSE WLK Fri, Oct 6, 2017 84.00 84.64 83.40 84.53
3312 NYSE WLK Thu, Oct 5, 2017 84.25 85.01 83.57 84.92
3311 NYSE WLK Wed, Oct 4, 2017 85.36 85.36 83.67 83.78
3310 NYSE WLK Tue, Oct 3, 2017 84.81 85.18 84.20 84.97
3309 NYSE WLK Mon, Oct 2, 2017 82.94 84.84 82.94 84.77
3308 NYSE WLK Fri, Sep 29, 2017 83.62 83.99 82.75 83.09
3307 NYSE WLK Thu, Sep 28, 2017 83.64 83.90 82.85 83.55
3306 NYSE WLK Wed, Sep 27, 2017 82.81 84.58 82.14 83.30
3305 NYSE WLK Tue, Sep 26, 2017 82.00 82.98 81.63 82.19
3304 NYSE WLK Mon, Sep 25, 2017 80.55 81.04 79.98 80.71
3303 NYSE WLK Fri, Sep 22, 2017 80.92 81.63 80.52 80.79
3302 NYSE WLK Thu, Sep 21, 2017 81.11 81.11 80.34 80.74
3301 NYSE WLK Wed, Sep 20, 2017 81.59 81.72 80.53 81.17
3300 NYSE WLK Tue, Sep 19, 2017 81.09 81.50 80.57 81.30
3299 NYSE WLK Mon, Sep 18, 2017 79.99 80.86 79.65 80.77
3298 NYSE WLK Fri, Sep 15, 2017 78.94 79.79 78.68 79.46
3297 NYSE WLK Thu, Sep 14, 2017 79.26 79.47 78.62 79.15
3296 NYSE WLK Wed, Sep 13, 2017 79.42 79.65 78.62 79.29
3295 NYSE WLK Tue, Sep 12, 2017 77.88 79.70 77.55 79.42
3294 NYSE WLK Mon, Sep 11, 2017 77.46 78.14 76.99 77.45
3293 NYSE WLK Fri, Sep 8, 2017 76.79 77.08 76.30 76.58
3292 NYSE WLK Thu, Sep 7, 2017 78.31 78.32 76.79 76.98
3291 NYSE WLK Wed, Sep 6, 2017 77.49 79.13 77.11 78.33
3290 NYSE WLK Tue, Sep 5, 2017 77.90 78.17 75.92 76.64
3289 NYSE WLK Fri, Sep 1, 2017 77.38 78.06 76.82 77.70
3288 NYSE WLK Thu, Aug 31, 2017 76.92 77.31 76.35 76.91
3287 NYSE WLK Wed, Aug 30, 2017 74.54 76.45 74.33 76.36
3286 NYSE WLK Tue, Aug 29, 2017 74.07 75.25 73.68 74.61
3285 NYSE WLK Mon, Aug 28, 2017 73.92 75.18 73.92 74.84
3284 NYSE WLK Fri, Aug 25, 2017 73.46 74.38 73.19 73.27
3283 NYSE WLK Thu, Aug 24, 2017 72.41 72.89 71.87 72.70
3282 NYSE WLK Wed, Aug 23, 2017 71.07 72.55 71.07 72.40
3281 NYSE WLK Tue, Aug 22, 2017 71.18 71.77 70.84 71.64
3280 NYSE WLK Mon, Aug 21, 2017 70.33 70.89 70.26 70.83
3279 NYSE WLK Fri, Aug 18, 2017 69.71 70.51 68.93 70.28
3278 NYSE WLK Thu, Aug 17, 2017 70.61 71.33 69.65 69.70
3277 NYSE WLK Wed, Aug 16, 2017 70.59 71.23 70.30 71.03
3276 NYSE WLK Tue, Aug 15, 2017 69.88 70.47 69.81 70.19
3275 NYSE WLK Mon, Aug 14, 2017 69.88 70.19 69.59 69.87
3274 NYSE WLK Fri, Aug 11, 2017 68.82 70.12 68.67 69.34
3273 NYSE WLK Thu, Aug 10, 2017 69.62 70.72 69.10 69.16
3272 NYSE WLK Wed, Aug 9, 2017 69.43 70.40 68.60 70.24
3271 NYSE WLK Tue, Aug 8, 2017 70.21 70.84 69.25 69.57
3270 NYSE WLK Mon, Aug 7, 2017 70.22 70.50 69.78 70.41
3269 NYSE WLK Fri, Aug 4, 2017 70.05 70.71 69.68 69.97
3268 NYSE WLK Thu, Aug 3, 2017 71.15 72.00 69.19 69.43
3267 NYSE WLK Wed, Aug 2, 2017 70.44 71.55 69.48 71.33
3266 NYSE WLK Tue, Aug 1, 2017 70.56 70.71 69.77 70.41
3265 NYSE WLK Mon, Jul 31, 2017 71.15 71.33 70.16 70.36
3264 NYSE WLK Fri, Jul 28, 2017 70.03 71.06 70.01 71.00
3263 NYSE WLK Thu, Jul 27, 2017 70.68 71.05 69.54 70.10
3262 NYSE WLK Wed, Jul 26, 2017 71.39 71.39 70.31 70.48
3261 NYSE WLK Tue, Jul 25, 2017 71.34 71.44 70.20 71.00
3260 NYSE WLK Mon, Jul 24, 2017 70.07 70.66 69.90 70.32
3259 NYSE WLK Fri, Jul 21, 2017 69.94 70.13 69.64 69.94
3258 NYSE WLK Thu, Jul 20, 2017 70.44 70.74 69.62 70.03
3257 NYSE WLK Wed, Jul 19, 2017 69.45 70.69 69.28 70.50
3256 NYSE WLK Tue, Jul 18, 2017 70.42 70.48 69.33 69.38
3255 NYSE WLK Mon, Jul 17, 2017 70.29 70.82 70.10 70.41
3254 NYSE WLK Fri, Jul 14, 2017 70.11 70.59 69.69 70.24
3253 NYSE WLK Thu, Jul 13, 2017 69.75 70.08 69.02 69.79
3252 NYSE WLK Wed, Jul 12, 2017 69.07 70.31 68.76 69.30
3251 NYSE WLK Tue, Jul 11, 2017 67.57 68.68 67.18 68.24
3250 NYSE WLK Mon, Jul 10, 2017 66.45 67.82 66.39 67.55
3249 NYSE WLK Fri, Jul 7, 2017 65.99 66.87 65.41 66.73
3248 NYSE WLK Thu, Jul 6, 2017 66.07 67.15 65.59 65.85
3247 NYSE WLK Wed, Jul 5, 2017 67.05 67.42 65.51 66.00
3246 NYSE WLK Mon, Jul 3, 2017 66.59 67.59 66.59 66.95
3245 NYSE WLK Fri, Jun 30, 2017 65.86 66.81 65.43 66.21
3244 NYSE WLK Thu, Jun 29, 2017 65.72 66.40 64.70 65.10
3243 NYSE WLK Wed, Jun 28, 2017 63.81 65.44 63.61 65.26
3242 NYSE WLK Tue, Jun 27, 2017 63.10 63.86 62.56 63.16
3241 NYSE WLK Mon, Jun 26, 2017 62.93 62.93 61.51 62.58
3240 NYSE WLK Fri, Jun 23, 2017 62.93 63.30 62.28 62.34
3239 NYSE WLK Thu, Jun 22, 2017 62.97 63.95 62.78 63.20
3238 NYSE WLK Wed, Jun 21, 2017 63.38 64.25 62.51 62.74
3237 NYSE WLK Tue, Jun 20, 2017 63.70 64.29 62.81 63.75
3236 NYSE WLK Mon, Jun 19, 2017 63.72 64.59 63.45 64.55
3235 NYSE WLK Fri, Jun 16, 2017 62.82 63.65 62.63 63.65
3234 NYSE WLK Thu, Jun 15, 2017 63.14 63.39 62.18 62.51
3233 NYSE WLK Wed, Jun 14, 2017 66.09 66.14 63.32 63.59
3232 NYSE WLK Tue, Jun 13, 2017 65.16 66.10 64.87 65.97
3231 NYSE WLK Mon, Jun 12, 2017 65.80 66.16 64.71 65.04
3230 NYSE WLK Fri, Jun 9, 2017 63.60 66.32 63.60 65.69
3229 NYSE WLK Thu, Jun 8, 2017 61.97 64.06 61.86 63.55
3228 NYSE WLK Wed, Jun 7, 2017 62.40 63.32 61.76 62.11
3227 NYSE WLK Tue, Jun 6, 2017 62.42 63.08 61.66 62.43
3226 NYSE WLK Mon, Jun 5, 2017 62.64 63.50 62.16 62.90
3225 NYSE WLK Fri, Jun 2, 2017 62.64 63.48 61.99 62.93
3224 NYSE WLK Thu, Jun 1, 2017 61.53 62.74 61.23 62.43
3223 NYSE WLK Wed, May 31, 2017 61.80 61.80 60.23 61.46
3222 NYSE WLK Tue, May 30, 2017 62.18 62.47 61.38 61.92
3221 NYSE WLK Fri, May 26, 2017 62.09 62.98 61.99 62.54
3220 NYSE WLK Thu, May 25, 2017 62.77 63.70 62.02 62.33
3219 NYSE WLK Wed, May 24, 2017 63.18 63.73 62.36 62.65
3218 NYSE WLK Tue, May 23, 2017 63.49 64.44 62.90 63.05
3217 NYSE WLK Mon, May 22, 2017 63.86 63.88 62.61 63.24
3216 NYSE WLK Fri, May 19, 2017 61.81 64.00 61.65 62.88
3215 NYSE WLK Thu, May 18, 2017 60.43 61.83 59.58 61.53
3214 NYSE WLK Wed, May 17, 2017 62.58 62.87 60.52 61.05
3213 NYSE WLK Tue, May 16, 2017 63.45 64.03 62.81 63.71
3212 NYSE WLK Mon, May 15, 2017 63.00 64.56 62.06 63.44
3211 NYSE WLK Fri, May 12, 2017 61.20 62.20 61.17 61.72
3210 NYSE WLK Thu, May 11, 2017 61.73 62.04 60.26 60.84
3209 NYSE WLK Wed, May 10, 2017 60.61 61.70 60.41 61.63
3208 NYSE WLK Tue, May 9, 2017 60.13 60.79 59.75 60.35
3207 NYSE WLK Mon, May 8, 2017 61.63 61.87 59.75 60.09
3206 NYSE WLK Fri, May 5, 2017 60.77 62.48 60.63 62.13
3205 NYSE WLK Thu, May 4, 2017 62.07 62.44 60.40 60.56
3204 NYSE WLK Wed, May 3, 2017 64.11 64.39 62.21 62.62
3203 NYSE WLK Tue, May 2, 2017 65.36 67.82 63.15 64.33
3202 NYSE WLK Mon, May 1, 2017 62.52 62.53 60.87 62.20
3201 NYSE WLK Fri, Apr 28, 2017 63.51 63.52 61.87 62.25
3200 NYSE WLK Thu, Apr 27, 2017 64.39 64.49 63.07 63.42
3199 NYSE WLK Wed, Apr 26, 2017 65.06 65.48 64.47 64.56
3198 NYSE WLK Tue, Apr 25, 2017 65.22 65.49 64.80 65.35
3197 NYSE WLK Mon, Apr 24, 2017 65.32 65.55 64.49 64.77
3196 NYSE WLK Fri, Apr 21, 2017 64.70 65.06 63.73 64.30
3195 NYSE WLK Thu, Apr 20, 2017 64.71 65.58 64.25 64.83
3194 NYSE WLK Wed, Apr 19, 2017 62.97 64.29 62.91 63.90
3193 NYSE WLK Tue, Apr 18, 2017 62.48 63.27 61.73 62.32
3192 NYSE WLK Mon, Apr 17, 2017 62.92 63.39 62.47 62.86
3191 NYSE WLK Thu, Apr 13, 2017 64.91 65.21 62.61 62.71
3190 NYSE WLK Wed, Apr 12, 2017 67.08 67.17 64.93 65.15
3189 NYSE WLK Tue, Apr 11, 2017 67.37 67.61 66.40 67.34
3188 NYSE WLK Mon, Apr 10, 2017 67.34 67.86 66.58 67.30
3187 NYSE WLK Fri, Apr 7, 2017 66.28 67.45 65.84 67.19
3186 NYSE WLK Thu, Apr 6, 2017 65.40 66.73 65.16 66.56
3185 NYSE WLK Wed, Apr 5, 2017 66.68 67.50 65.26 65.32
3184 NYSE WLK Tue, Apr 4, 2017 65.64 66.16 65.43 66.11
3183 NYSE WLK Mon, Apr 3, 2017 66.25 66.48 64.75 65.54
3182 NYSE WLK Fri, Mar 31, 2017 65.43 66.43 65.43 66.05
3181 NYSE WLK Thu, Mar 30, 2017 65.72 66.34 65.54 65.65
3180 NYSE WLK Wed, Mar 29, 2017 65.30 66.52 65.30 65.60
3179 NYSE WLK Tue, Mar 28, 2017 64.25 66.19 64.25 65.45
3178 NYSE WLK Mon, Mar 27, 2017 63.63 64.53 62.74 64.24
3177 NYSE WLK Fri, Mar 24, 2017 65.38 65.58 64.26 64.64
3176 NYSE WLK Thu, Mar 23, 2017 64.67 65.82 64.08 65.24
3175 NYSE WLK Wed, Mar 22, 2017 64.68 65.18 64.12 64.80
3174 NYSE WLK Tue, Mar 21, 2017 66.95 67.48 64.81 64.90
3173 NYSE WLK Mon, Mar 20, 2017 66.99 67.11 65.80 66.88
3172 NYSE WLK Fri, Mar 17, 2017 67.46 68.08 66.98 67.21
3171 NYSE WLK Thu, Mar 16, 2017 67.30 67.38 66.59 67.14
3170 NYSE WLK Wed, Mar 15, 2017 64.88 66.94 64.88 66.87
3169 NYSE WLK Tue, Mar 14, 2017 64.68 64.75 63.60 64.46
3168 NYSE WLK Mon, Mar 13, 2017 64.66 65.56 64.51 65.47
3167 NYSE WLK Fri, Mar 10, 2017 64.82 64.95 63.74 64.36
3166 NYSE WLK Thu, Mar 9, 2017 64.25 64.84 63.27 64.16
3165 NYSE WLK Wed, Mar 8, 2017 65.54 65.72 64.43 64.45
3164 NYSE WLK Tue, Mar 7, 2017 65.43 66.28 64.96 65.85
3163 NYSE WLK Mon, Mar 6, 2017 65.10 65.90 65.10 65.49
3162 NYSE WLK Fri, Mar 3, 2017 65.92 66.09 65.19 65.76
3161 NYSE WLK Thu, Mar 2, 2017 65.77 66.36 65.34 65.38
3160 NYSE WLK Wed, Mar 1, 2017 64.17 66.59 64.11 66.18
3159 NYSE WLK Tue, Feb 28, 2017 63.58 64.14 62.99 63.43
3158 NYSE WLK Mon, Feb 27, 2017 63.35 64.25 63.13 63.84
3157 NYSE WLK Fri, Feb 24, 2017 62.19 64.23 62.19 63.61
3156 NYSE WLK Thu, Feb 23, 2017 65.91 65.91 63.26 63.21
3155 NYSE WLK Wed, Feb 22, 2017 65.43 66.13 64.43 64.55
3154 NYSE WLK Tue, Feb 21, 2017 62.40 66.83 61.05 65.79
3153 NYSE WLK Fri, Feb 17, 2017 62.18 62.41 61.32 61.66
3152 NYSE WLK Thu, Feb 16, 2017 64.27 64.73 62.58 62.65
3151 NYSE WLK Wed, Feb 15, 2017 64.28 64.57 63.59 64.14
3150 NYSE WLK Tue, Feb 14, 2017 64.28 64.62 63.83 64.23
3149 NYSE WLK Mon, Feb 13, 2017 63.84 64.79 63.84 64.43
3148 NYSE WLK Fri, Feb 10, 2017 63.67 64.25 63.26 63.58
3147 NYSE WLK Thu, Feb 9, 2017 62.55 63.39 62.31 63.23
3146 NYSE WLK Wed, Feb 8, 2017 61.84 62.07 61.21 61.99
3145 NYSE WLK Tue, Feb 7, 2017 62.79 63.99 61.71 61.80
3144 NYSE WLK Mon, Feb 6, 2017 63.46 63.53 63.10 63.46
3143 NYSE WLK Fri, Feb 3, 2017 63.51 64.17 63.25 63.57
3142 NYSE WLK Thu, Feb 2, 2017 63.89 64.15 62.92 63.34
3141 NYSE WLK Wed, Feb 1, 2017 61.75 64.18 61.75 64.07
3140 NYSE WLK Tue, Jan 31, 2017 62.32 62.32 61.22 61.91
3139 NYSE WLK Mon, Jan 30, 2017 62.61 62.68 61.29 62.21
3138 NYSE WLK Fri, Jan 27, 2017 63.84 64.20 63.34 63.36
3137 NYSE WLK Thu, Jan 26, 2017 64.26 65.02 63.81 64.03
3136 NYSE WLK Wed, Jan 25, 2017 63.87 64.38 63.41 64.33
3135 NYSE WLK Tue, Jan 24, 2017 61.60 64.78 61.60 64.09
3134 NYSE WLK Mon, Jan 23, 2017 60.63 61.11 60.39 61.03
3133 NYSE WLK Fri, Jan 20, 2017 60.89 62.34 60.34 61.03
3132 NYSE WLK Thu, Jan 19, 2017 59.46 59.90 58.98 59.19
3131 NYSE WLK Wed, Jan 18, 2017 59.88 60.18 58.97 59.22
3130 NYSE WLK Tue, Jan 17, 2017 60.35 60.56 59.56 59.77
3129 NYSE WLK Fri, Jan 13, 2017 59.86 61.30 59.86 60.24
3128 NYSE WLK Thu, Jan 12, 2017 60.02 60.17 59.15 60.04
3127 NYSE WLK Wed, Jan 11, 2017 58.28 59.44 57.83 59.26
3126 NYSE WLK Tue, Jan 10, 2017 58.37 58.69 57.73 58.04
3125 NYSE WLK Mon, Jan 9, 2017 58.60 59.43 58.22 58.22
3124 NYSE WLK Fri, Jan 6, 2017 59.59 59.63 58.63 59.30
3123 NYSE WLK Thu, Jan 5, 2017 58.36 60.35 58.36 59.45
3122 NYSE WLK Wed, Jan 4, 2017 57.39 58.76 57.08 58.56
3121 NYSE WLK Tue, Jan 3, 2017 56.65 58.08 56.35 57.29
3120 NYSE WLK Fri, Dec 30, 2016 56.59 56.87 55.83 55.99
3119 NYSE WLK Thu, Dec 29, 2016 56.84 57.29 56.33 56.47
3118 NYSE WLK Wed, Dec 28, 2016 57.58 58.12 56.87 56.90
3117 NYSE WLK Tue, Dec 27, 2016 57.71 58.19 57.60 57.66
3116 NYSE WLK Fri, Dec 23, 2016 56.85 57.85 56.81 57.60
3115 NYSE WLK Thu, Dec 22, 2016 57.57 57.57 56.39 56.80
3114 NYSE WLK Wed, Dec 21, 2016 58.12 58.33 57.21 57.47
3113 NYSE WLK Tue, Dec 20, 2016 58.64 58.85 57.82 57.98
3112 NYSE WLK Mon, Dec 19, 2016 57.88 58.10 57.28 58.07
3111 NYSE WLK Fri, Dec 16, 2016 57.17 58.15 56.98 58.10
3110 NYSE WLK Thu, Dec 15, 2016 56.49 57.50 56.00 57.23
3109 NYSE WLK Wed, Dec 14, 2016 57.33 58.09 56.63 56.74
3108 NYSE WLK Tue, Dec 13, 2016 57.43 58.34 57.06 57.88
3107 NYSE WLK Mon, Dec 12, 2016 57.52 58.75 57.06 57.12
3106 NYSE WLK Fri, Dec 9, 2016 58.17 58.17 56.69 57.21
3105 NYSE WLK Thu, Dec 8, 2016 57.42 58.25 56.82 57.93
3104 NYSE WLK Wed, Dec 7, 2016 56.89 57.30 56.01 57.19
3103 NYSE WLK Tue, Dec 6, 2016 57.35 57.51 55.98 56.66
3102 NYSE WLK Mon, Dec 5, 2016 57.90 58.77 57.39 57.61
3101 NYSE WLK Fri, Dec 2, 2016 58.61 58.92 57.11 57.40
3100 NYSE WLK Thu, Dec 1, 2016 59.97 61.53 58.60 58.71
3099 NYSE WLK Wed, Nov 30, 2016 56.42 59.48 56.42 59.17
3098 NYSE WLK Tue, Nov 29, 2016 54.70 54.81 54.11 54.41
3097 NYSE WLK Mon, Nov 28, 2016 55.61 56.39 55.11 55.03
3096 NYSE WLK Fri, Nov 25, 2016 55.16 55.99 55.02 55.57
3095 NYSE WLK Wed, Nov 23, 2016 55.25 55.55 54.84 55.26
3094 NYSE WLK Tue, Nov 22, 2016 56.45 56.45 55.00 55.72
3093 NYSE WLK Mon, Nov 21, 2016 53.98 56.04 53.65 55.84
3092 NYSE WLK Fri, Nov 18, 2016 53.24 53.45 52.57 52.83
3091 NYSE WLK Thu, Nov 17, 2016 54.65 55.03 53.12 53.20
3090 NYSE WLK Wed, Nov 16, 2016 54.20 54.92 54.12 54.40
3089 NYSE WLK Tue, Nov 15, 2016 53.63 54.69 52.72 54.66
3088 NYSE WLK Mon, Nov 14, 2016 53.05 54.05 52.56 53.78
3087 NYSE WLK Fri, Nov 11, 2016 54.11 54.41 52.45 53.05
3086 NYSE WLK Thu, Nov 10, 2016 53.48 54.71 53.09 54.25
3085 NYSE WLK Wed, Nov 9, 2016 50.99 53.66 50.67 53.16
3084 NYSE WLK Tue, Nov 8, 2016 50.30 51.62 48.92 51.01
3083 NYSE WLK Mon, Nov 7, 2016 51.39 52.21 51.29 51.77
3082 NYSE WLK Fri, Nov 4, 2016 49.63 50.71 49.21 50.22
3081 NYSE WLK Thu, Nov 3, 2016 50.38 50.97 49.77 49.84
3080 NYSE WLK Wed, Nov 2, 2016 50.90 51.30 49.66 50.38
3079 NYSE WLK Tue, Nov 1, 2016 52.21 52.21 50.55 51.01
3078 NYSE WLK Mon, Oct 31, 2016 51.55 51.98 51.40 51.79
3077 NYSE WLK Fri, Oct 28, 2016 51.37 52.44 51.12 51.66
3076 NYSE WLK Thu, Oct 27, 2016 51.61 51.68 50.96 51.24
3075 NYSE WLK Wed, Oct 26, 2016 51.01 51.60 50.67 51.26
3074 NYSE WLK Tue, Oct 25, 2016 52.58 52.70 51.48 51.50
3073 NYSE WLK Mon, Oct 24, 2016 52.63 52.94 52.28 52.49
3072 NYSE WLK Fri, Oct 21, 2016 52.86 52.86 52.12 52.32
3071 NYSE WLK Thu, Oct 20, 2016 52.89 53.66 52.89 53.22
3070 NYSE WLK Wed, Oct 19, 2016 53.55 53.55 52.88 53.43
3069 NYSE WLK Tue, Oct 18, 2016 53.80 54.08 53.27 53.30
3068 NYSE WLK Mon, Oct 17, 2016 52.26 52.87 52.19 52.86
3067 NYSE WLK Fri, Oct 14, 2016 53.34 53.87 52.34 52.35
3066 NYSE WLK Thu, Oct 13, 2016 53.16 53.47 52.44 53.22
3065 NYSE WLK Wed, Oct 12, 2016 54.42 54.63 53.71 53.72
3064 NYSE WLK Tue, Oct 11, 2016 54.50 54.77 54.03 54.54
3063 NYSE WLK Mon, Oct 10, 2016 54.61 56.18 54.61 54.82
3062 NYSE WLK Fri, Oct 7, 2016 55.07 55.61 53.62 53.97
3061 NYSE WLK Thu, Oct 6, 2016 53.68 55.29 53.68 54.84
3060 NYSE WLK Wed, Oct 5, 2016 52.87 54.29 52.63 53.84
3059 NYSE WLK Tue, Oct 4, 2016 53.20 53.44 52.09 52.25
3058 NYSE WLK Mon, Oct 3, 2016 53.51 53.57 52.75 52.95
3057 NYSE WLK Fri, Sep 30, 2016 53.38 53.99 53.12 53.50
3056 NYSE WLK Thu, Sep 29, 2016 51.54 53.10 51.24 52.74
3055 NYSE WLK Wed, Sep 28, 2016 50.69 51.47 49.70 51.38
3054 NYSE WLK Tue, Sep 27, 2016 49.28 50.45 49.01 50.41
3053 NYSE WLK Mon, Sep 26, 2016 50.25 50.50 49.54 49.59
3052 NYSE WLK Fri, Sep 23, 2016 50.58 51.93 50.18 50.30
3051 NYSE WLK Thu, Sep 22, 2016 51.02 51.10 49.97 50.67
3050 NYSE WLK Wed, Sep 21, 2016 49.79 50.49 48.98 50.38
3049 NYSE WLK Tue, Sep 20, 2016 50.70 50.87 49.24 49.32
3048 NYSE WLK Mon, Sep 19, 2016 50.69 51.19 50.21 50.58
3047 NYSE WLK Fri, Sep 16, 2016 49.28 50.42 49.22 50.20
3046 NYSE WLK Thu, Sep 15, 2016 48.95 50.44 48.95 50.12
3045 NYSE WLK Wed, Sep 14, 2016 48.86 49.21 48.13 48.75
3044 NYSE WLK Tue, Sep 13, 2016 49.82 50.09 48.30 48.74
3043 NYSE WLK Mon, Sep 12, 2016 50.22 50.76 49.36 50.44
3042 NYSE WLK Fri, Sep 9, 2016 50.85 52.12 50.44 50.53
3041 NYSE WLK Thu, Sep 8, 2016 52.24 52.93 51.78 51.95
3040 NYSE WLK Wed, Sep 7, 2016 52.36 52.67 51.51 52.13
3039 NYSE WLK Tue, Sep 6, 2016 52.77 52.95 51.76 52.56
3038 NYSE WLK Fri, Sep 2, 2016 51.97 52.69 51.90 52.59
3037 NYSE WLK Thu, Sep 1, 2016 51.91 52.15 50.90 51.59
3036 NYSE WLK Wed, Aug 31, 2016 51.93 52.95 51.47 51.82
3035 NYSE WLK Tue, Aug 30, 2016 51.44 52.49 51.16 52.17
3034 NYSE WLK Mon, Aug 29, 2016 50.95 51.59 50.15 51.27
3033 NYSE WLK Fri, Aug 26, 2016 51.86 52.40 50.82 51.24
3032 NYSE WLK Thu, Aug 25, 2016 50.66 51.55 50.66 51.54
3031 NYSE WLK Wed, Aug 24, 2016 51.93 52.00 50.40 50.67
3030 NYSE WLK Tue, Aug 23, 2016 51.77 53.63 51.55 51.98
3029 NYSE WLK Mon, Aug 22, 2016 50.50 50.77 50.09 50.64
3028 NYSE WLK Fri, Aug 19, 2016 49.58 51.07 49.51 50.91
3027 NYSE WLK Thu, Aug 18, 2016 48.36 49.72 48.18 49.70
3026 NYSE WLK Wed, Aug 17, 2016 48.50 48.83 47.55 48.18
3025 NYSE WLK Tue, Aug 16, 2016 49.66 49.68 48.73 48.74
3024 NYSE WLK Mon, Aug 15, 2016 48.78 49.59 48.65 49.43
3023 NYSE WLK Fri, Aug 12, 2016 48.72 49.60 48.19 48.42
3022 NYSE WLK Thu, Aug 11, 2016 47.76 49.03 47.66 48.89
3021 NYSE WLK Wed, Aug 10, 2016 47.90 48.23 47.26 47.53
3020 NYSE WLK Tue, Aug 9, 2016 48.14 48.36 47.21 47.81
3019 NYSE WLK Mon, Aug 8, 2016 46.44 48.08 46.35 47.98
3018 NYSE WLK Fri, Aug 5, 2016 46.05 46.75 45.77 46.30
3017 NYSE WLK Thu, Aug 4, 2016 45.16 46.14 44.82 45.79
3016 NYSE WLK Wed, Aug 3, 2016 43.75 45.42 43.51 45.35
3015 NYSE WLK Tue, Aug 2, 2016 45.05 45.27 43.65 43.92
3014 NYSE WLK Mon, Aug 1, 2016 45.55 45.73 44.59 44.99
3013 NYSE WLK Fri, Jul 29, 2016 46.38 46.38 44.08 45.74
3012 NYSE WLK Thu, Jul 28, 2016 45.87 46.76 45.56 46.65
3011 NYSE WLK Wed, Jul 27, 2016 45.84 46.06 45.27 45.77
3010 NYSE WLK Tue, Jul 26, 2016 45.52 46.08 45.01 45.75
3009 NYSE WLK Mon, Jul 25, 2016 45.12 45.45 44.65 45.43
3008 NYSE WLK Fri, Jul 22, 2016 45.09 45.84 44.86 45.36
3007 NYSE WLK Thu, Jul 21, 2016 46.34 47.82 46.34 46.60
3006 NYSE WLK Wed, Jul 20, 2016 44.99 46.53 44.80 46.50
3005 NYSE WLK Tue, Jul 19, 2016 44.97 45.11 44.64 45.08
3004 NYSE WLK Mon, Jul 18, 2016 44.88 45.24 44.28 45.16
3003 NYSE WLK Fri, Jul 15, 2016 45.46 45.54 45.09 45.30
3002 NYSE WLK Thu, Jul 14, 2016 45.53 45.70 45.02 45.39
3001 NYSE WLK Wed, Jul 13, 2016 44.72 45.19 44.55 45.15
3000 NYSE WLK Tue, Jul 12, 2016 44.22 44.92 44.11 44.65
2999 NYSE WLK Mon, Jul 11, 2016 43.76 44.37 43.37 43.64
2998 NYSE WLK Fri, Jul 8, 2016 42.56 43.73 42.56 43.49
2997 NYSE WLK Thu, Jul 7, 2016 41.55 42.19 41.15 41.83
2996 NYSE WLK Wed, Jul 6, 2016 40.66 41.29 40.25 41.21
2995 NYSE WLK Tue, Jul 5, 2016 42.70 43.02 40.92 41.46
2994 NYSE WLK Fri, Jul 1, 2016 42.84 44.12 42.80 43.35
2993 NYSE WLK Thu, Jun 30, 2016 42.04 42.94 41.53 42.92
2992 NYSE WLK Wed, Jun 29, 2016 41.35 42.20 40.59 42.09
2991 NYSE WLK Tue, Jun 28, 2016 40.98 41.21 39.48 40.51
2990 NYSE WLK Mon, Jun 27, 2016 41.53 41.67 39.68 39.88
2989 NYSE WLK Fri, Jun 24, 2016 43.00 43.39 42.17 42.48
2988 NYSE WLK Thu, Jun 23, 2016 44.18 44.77 43.73 44.72
2987 NYSE WLK Wed, Jun 22, 2016 43.91 44.09 43.51 43.59
2986 NYSE WLK Tue, Jun 21, 2016 43.87 44.11 43.12 43.48
2985 NYSE WLK Mon, Jun 20, 2016 44.50 44.91 43.73 43.86
2984 NYSE WLK Fri, Jun 17, 2016 43.61 44.29 43.32 43.80
2983 NYSE WLK Thu, Jun 16, 2016 42.82 43.58 42.21 43.46
2982 NYSE WLK Wed, Jun 15, 2016 44.20 44.54 43.36 43.39
2981 NYSE WLK Tue, Jun 14, 2016 44.67 45.85 43.21 43.65
2980 NYSE WLK Mon, Jun 13, 2016 45.97 46.81 44.85 44.89
2979 NYSE WLK Fri, Jun 10, 2016 45.81 47.47 44.26 46.40
2978 NYSE WLK Thu, Jun 9, 2016 45.86 45.86 45.04 45.06
2977 NYSE WLK Wed, Jun 8, 2016 46.74 47.60 46.21 46.41
2976 NYSE WLK Tue, Jun 7, 2016 45.68 46.43 45.28 46.27
2975 NYSE WLK Mon, Jun 6, 2016 45.46 45.79 44.98 45.64
2974 NYSE WLK Fri, Jun 3, 2016 45.29 45.29 43.87 44.91
2973 NYSE WLK Thu, Jun 2, 2016 44.91 45.09 44.20 45.06
2972 NYSE WLK Wed, Jun 1, 2016 43.90 45.45 43.50 45.40
2971 NYSE WLK Tue, May 31, 2016 44.17 44.61 43.79 44.13
2970 NYSE WLK Fri, May 27, 2016 43.57 44.18 43.24 44.14
2969 NYSE WLK Thu, May 26, 2016 44.62 44.75 43.45 43.82
2968 NYSE WLK Wed, May 25, 2016 43.79 44.84 43.54 44.32
2967 NYSE WLK Tue, May 24, 2016 43.42 43.59 42.69 43.21
2966 NYSE WLK Mon, May 23, 2016 43.31 44.08 42.96 43.11
2965 NYSE WLK Fri, May 20, 2016 43.42 44.09 43.17 43.42
2964 NYSE WLK Thu, May 19, 2016 42.35 43.41 41.67 43.35
2963 NYSE WLK Wed, May 18, 2016 44.89 44.96 42.60 42.73
2962 NYSE WLK Tue, May 17, 2016 44.45 46.07 44.21 45.43
2961 NYSE WLK Mon, May 16, 2016 43.98 44.80 43.91 44.44
2960 NYSE WLK Fri, May 13, 2016 44.88 45.13 43.63 43.76
2959 NYSE WLK Thu, May 12, 2016 46.57 46.97 44.95 45.01
2958 NYSE WLK Wed, May 11, 2016 45.84 46.21 45.09 45.79
2957 NYSE WLK Tue, May 10, 2016 45.56 46.18 44.86 45.89
2956 NYSE WLK Mon, May 9, 2016 46.93 47.34 45.58 45.63
2955 NYSE WLK Fri, May 6, 2016 46.80 47.57 46.52 47.34
2954 NYSE WLK Thu, May 5, 2016 49.16 49.25 46.82 46.88
2953 NYSE WLK Wed, May 4, 2016 48.65 50.58 48.25 48.33
2952 NYSE WLK Tue, May 3, 2016 48.57 49.71 47.69 48.95
2951 NYSE WLK Mon, May 2, 2016 50.42 50.66 49.06 50.19
2950 NYSE WLK Fri, Apr 29, 2016 50.90 51.23 49.59 50.19
2949 NYSE WLK Thu, Apr 28, 2016 51.77 52.53 50.50 50.69
2948 NYSE WLK Wed, Apr 27, 2016 51.81 52.39 51.18 52.22
2947 NYSE WLK Tue, Apr 26, 2016 51.18 51.75 50.64 51.55
2946 NYSE WLK Mon, Apr 25, 2016 51.48 52.05 50.56 50.82
2945 NYSE WLK Fri, Apr 22, 2016 51.72 52.55 51.00 51.77
2944 NYSE WLK Thu, Apr 21, 2016 49.27 52.82 49.00 51.55
2943 NYSE WLK Wed, Apr 20, 2016 49.24 49.40 48.30 48.93
2942 NYSE WLK Tue, Apr 19, 2016 48.04 49.56 47.70 49.33
2941 NYSE WLK Mon, Apr 18, 2016 46.04 47.70 45.80 47.63
2940 NYSE WLK Fri, Apr 15, 2016 46.65 47.20 45.99 46.94
2939 NYSE WLK Thu, Apr 14, 2016 47.00 47.00 46.49 46.65
2938 NYSE WLK Wed, Apr 13, 2016 46.47 46.99 46.24 46.74
2937 NYSE WLK Tue, Apr 12, 2016 44.80 46.31 44.45 45.92
2936 NYSE WLK Mon, Apr 11, 2016 44.67 45.38 44.10 44.38
2935 NYSE WLK Fri, Apr 8, 2016 44.67 45.43 44.30 44.42
2934 NYSE WLK Thu, Apr 7, 2016 44.67 45.01 43.51 43.68
2933 NYSE WLK Wed, Apr 6, 2016 44.54 45.28 43.82 45.19
2932 NYSE WLK Tue, Apr 5, 2016 44.99 44.99 44.99 44.29
2931 NYSE WLK Mon, Apr 4, 2016 47.49 47.49 44.99 44.99
2930 NYSE WLK Fri, Apr 1, 2016 45.53 47.60 45.06 47.54
2929 NYSE WLK Thu, Mar 31, 2016 46.89 47.14 46.12 46.30
2928 NYSE WLK Wed, Mar 30, 2016 46.85 47.59 46.57 46.92
2927 NYSE WLK Tue, Mar 29, 2016 46.00 46.56 45.27 46.38
2926 NYSE WLK Mon, Mar 28, 2016 46.75 46.86 45.73 46.51
2925 NYSE WLK Thu, Mar 24, 2016 46.82 46.82 46.82 46.38
2924 NYSE WLK Wed, Mar 23, 2016 46.92 47.32 46.50 46.82
2923 NYSE WLK Tue, Mar 22, 2016 47.16 47.83 46.70 47.42
2922 NYSE WLK Mon, Mar 21, 2016 47.89 48.59 46.85 47.60
2921 NYSE WLK Fri, Mar 18, 2016 48.65 49.58 47.80 48.35
2920 NYSE WLK Thu, Mar 17, 2016 46.76 48.71 46.76 48.39
2919 NYSE WLK Wed, Mar 16, 2016 45.12 46.61 44.80 46.50
2918 NYSE WLK Tue, Mar 15, 2016 45.77 45.77 45.77 44.84
2917 NYSE WLK Mon, Mar 14, 2016 45.88 46.34 45.02 45.77
2916 NYSE WLK Fri, Mar 11, 2016 44.92 44.92 44.92 46.74
2915 NYSE WLK Thu, Mar 10, 2016 44.05 45.21 43.57 44.92
2914 NYSE WLK Wed, Mar 9, 2016 43.83 44.48 43.18 44.33
2913 NYSE WLK Tue, Mar 8, 2016 45.00 45.29 42.49 42.87
2912 NYSE WLK Mon, Mar 7, 2016 45.25 46.15 44.88 45.56
2911 NYSE WLK Fri, Mar 4, 2016 45.71 45.71 45.71 45.19
2910 NYSE WLK Thu, Mar 3, 2016 45.75 45.75 45.75 45.71
2909 NYSE WLK Wed, Mar 2, 2016 44.59 45.86 44.22 45.75
2908 NYSE WLK Tue, Mar 1, 2016 43.88 44.82 42.96 44.82
2907 NYSE WLK Mon, Feb 29, 2016 44.15 44.65 43.03 43.12
2906 NYSE WLK Fri, Feb 26, 2016 43.28 43.28 43.28 43.97
2905 NYSE WLK Thu, Feb 25, 2016 41.92 43.62 41.11 43.28
2904 NYSE WLK Wed, Feb 24, 2016 39.92 41.88 39.90 41.88
2903 NYSE WLK Tue, Feb 23, 2016 42.38 43.81 40.42 41.01
2902 NYSE WLK Mon, Feb 22, 2016 43.52 45.01 43.36 45.01
2901 NYSE WLK Fri, Feb 19, 2016 44.18 44.18 42.48 42.80
2900 NYSE WLK Thu, Feb 18, 2016 44.70 44.95 43.89 44.43
2899 NYSE WLK Wed, Feb 17, 2016 43.52 44.84 42.68 44.16
2898 NYSE WLK Tue, Feb 16, 2016 44.45 45.03 42.81 43.58
2897 NYSE WLK Fri, Feb 12, 2016 43.48 44.14 42.23 43.86
2896 NYSE WLK Thu, Feb 11, 2016 41.69 43.01 41.26 42.30
2895 NYSE WLK Wed, Feb 10, 2016 43.49 44.27 42.17 42.38
2894 NYSE WLK Tue, Feb 9, 2016 42.95 44.24 42.13 43.50
2893 NYSE WLK Mon, Feb 8, 2016 45.07 45.85 42.45 43.55
2892 NYSE WLK Fri, Feb 5, 2016 45.72 46.77 45.20 46.07
2891 NYSE WLK Thu, Feb 4, 2016 45.21 47.02 44.89 46.23
2890 NYSE WLK Wed, Feb 3, 2016 44.77 44.97 42.42 44.93
2889 NYSE WLK Tue, Feb 2, 2016 45.23 45.24 43.43 43.80
2888 NYSE WLK Mon, Feb 1, 2016 45.07 45.93 44.13 45.23
2887 NYSE WLK Fri, Jan 29, 2016 46.91 47.23 43.20 45.48
2886 NYSE WLK Thu, Jan 28, 2016 46.66 47.67 46.28 46.57
2885 NYSE WLK Wed, Jan 27, 2016 44.98 46.65 43.43 45.31
2884 NYSE WLK Tue, Jan 26, 2016 44.18 45.57 43.81 45.54
2883 NYSE WLK Mon, Jan 25, 2016 44.98 45.44 43.38 43.78
2882 NYSE WLK Fri, Jan 22, 2016 44.93 46.25 44.68 45.76
2881 NYSE WLK Thu, Jan 21, 2016 42.30 43.94 41.56 43.40
2880 NYSE WLK Wed, Jan 20, 2016 41.94 42.69 40.44 42.16
2879 NYSE WLK Tue, Jan 19, 2016 44.98 45.43 42.35 43.11
2878 NYSE WLK Fri, Jan 15, 2016 41.34 44.97 41.34 44.54
2877 NYSE WLK Thu, Jan 14, 2016 44.14 45.68 42.90 45.33
2876 NYSE WLK Wed, Jan 13, 2016 46.46 46.46 43.45 43.97
2875 NYSE WLK Tue, Jan 12, 2016 46.13 46.53 44.32 45.76
2874 NYSE WLK Mon, Jan 11, 2016 47.54 47.54 44.49 45.16
2873 NYSE WLK Fri, Jan 8, 2016 48.84 48.87 47.24 47.28
2872 NYSE WLK Thu, Jan 7, 2016 49.08 49.33 47.80 48.26
2871 NYSE WLK Wed, Jan 6, 2016 51.81 51.87 50.03 50.55
2870 NYSE WLK Tue, Jan 5, 2016 53.60 53.99 52.28 53.15
2869 NYSE WLK Mon, Jan 4, 2016 53.93 54.07 52.16 53.60
2868 NYSE WLK Thu, Dec 31, 2015 54.45 55.34 54.00 54.32
2867 NYSE WLK Wed, Dec 30, 2015 55.11 55.38 54.65 54.81
2866 NYSE WLK Tue, Dec 29, 2015 55.50 55.80 54.79 55.66
2865 NYSE WLK Mon, Dec 28, 2015 55.04 55.36 54.18 54.74
2864 NYSE WLK Thu, Dec 24, 2015 56.40 57.02 55.50 55.60
2863 NYSE WLK Wed, Dec 23, 2015 54.71 56.89 54.71 56.85
2862 NYSE WLK Tue, Dec 22, 2015 53.80 54.21 53.46 54.06
2861 NYSE WLK Mon, Dec 21, 2015 53.76 54.51 52.90 53.49
2860 NYSE WLK Fri, Dec 18, 2015 53.75 54.49 53.28 53.34
2859 NYSE WLK Thu, Dec 17, 2015 54.76 55.20 53.38 53.69
2858 NYSE WLK Wed, Dec 16, 2015 54.45 55.44 54.18 55.01
2857 NYSE WLK Tue, Dec 15, 2015 53.71 54.21 53.13 54.02
2856 NYSE WLK Mon, Dec 14, 2015 53.88 53.88 51.97 52.86
2855 NYSE WLK Fri, Dec 11, 2015 54.18 54.55 53.72 54.05
2854 NYSE WLK Thu, Dec 10, 2015 55.75 56.22 54.97 55.28
2853 NYSE WLK Wed, Dec 9, 2015 55.31 57.39 55.15 56.20
2852 NYSE WLK Tue, Dec 8, 2015 55.24 56.02 53.84 54.79
2851 NYSE WLK Mon, Dec 7, 2015 57.49 57.69 55.51 56.09
2850 NYSE WLK Fri, Dec 4, 2015 58.04 58.93 57.11 58.27
2849 NYSE WLK Thu, Dec 3, 2015 59.16 59.82 58.01 58.50
2848 NYSE WLK Wed, Dec 2, 2015 60.42 60.53 58.60 58.79
2847 NYSE WLK Tue, Dec 1, 2015 60.48 60.65 59.74 60.60
2846 NYSE WLK Mon, Nov 30, 2015 59.93 60.57 59.85 60.05
2845 NYSE WLK Fri, Nov 27, 2015 59.89 60.05 59.03 59.77
2844 NYSE WLK Wed, Nov 25, 2015 60.22 60.95 59.95 60.03
2843 NYSE WLK Tue, Nov 24, 2015 59.75 60.82 59.08 60.55
2842 NYSE WLK Mon, Nov 23, 2015 59.13 60.32 58.66 59.18
2841 NYSE WLK Fri, Nov 20, 2015 60.03 61.21 59.04 59.20
2840 NYSE WLK Thu, Nov 19, 2015 59.93 60.95 58.91 59.77
2839 NYSE WLK Wed, Nov 18, 2015 59.83 60.04 58.91 59.95
2838 NYSE WLK Tue, Nov 17, 2015 59.13 59.94 58.44 59.05
2837 NYSE WLK Mon, Nov 16, 2015 57.44 59.26 57.44 59.14
2836 NYSE WLK Fri, Nov 13, 2015 57.45 58.07 56.54 57.61
2835 NYSE WLK Thu, Nov 12, 2015 60.19 60.28 57.34 57.40
2834 NYSE WLK Wed, Nov 11, 2015 60.76 60.95 59.43 59.48
2833 NYSE WLK Tue, Nov 10, 2015 60.36 60.86 59.35 60.58
2832 NYSE WLK Mon, Nov 9, 2015 61.19 62.32 59.60 60.61
2831 NYSE WLK Fri, Nov 6, 2015 59.81 61.41 59.43 61.23
2830 NYSE WLK Thu, Nov 5, 2015 60.37 60.92 59.11 60.18
2829 NYSE WLK Wed, Nov 4, 2015 62.25 63.56 61.15 61.25
2828 NYSE WLK Tue, Nov 3, 2015 60.29 63.51 58.84 62.09
2827 NYSE WLK Mon, Nov 2, 2015 60.13 60.77 59.52 60.29
2826 NYSE WLK Fri, Oct 30, 2015 59.98 60.69 58.55 60.27
2825 NYSE WLK Thu, Oct 29, 2015 59.05 60.31 59.05 59.66
2824 NYSE WLK Wed, Oct 28, 2015 57.10 59.72 56.82 59.55
2823 NYSE WLK Tue, Oct 27, 2015 58.07 58.63 56.33 57.01
2822 NYSE WLK Mon, Oct 26, 2015 59.87 60.00 59.14 59.45
2821 NYSE WLK Fri, Oct 23, 2015 60.90 61.17 59.61 59.94
2820 NYSE WLK Thu, Oct 22, 2015 58.84 60.92 58.76 60.76
2819 NYSE WLK Wed, Oct 21, 2015 59.45 59.92 58.09 58.16
2818 NYSE WLK Tue, Oct 20, 2015 58.82 60.34 58.39 59.31
2817 NYSE WLK Mon, Oct 19, 2015 59.19 60.26 58.57 58.83
2816 NYSE WLK Fri, Oct 16, 2015 59.86 60.12 58.88 59.94
2815 NYSE WLK Thu, Oct 15, 2015 59.50 59.74 58.13 59.66
2814 NYSE WLK Wed, Oct 14, 2015 58.77 59.87 58.48 59.55
2813 NYSE WLK Tue, Oct 13, 2015 57.98 59.78 57.30 58.92
2812 NYSE WLK Mon, Oct 12, 2015 59.79 59.83 58.18 58.79
2811 NYSE WLK Fri, Oct 9, 2015 61.05 61.53 59.35 59.61
2810 NYSE WLK Thu, Oct 8, 2015 59.38 61.12 58.88 60.77
2809 NYSE WLK Wed, Oct 7, 2015 57.98 59.67 57.65 59.08
2808 NYSE WLK Tue, Oct 6, 2015 55.73 58.58 55.70 57.67
2807 NYSE WLK Mon, Oct 5, 2015 55.02 56.38 55.02 55.78
2806 NYSE WLK Fri, Oct 2, 2015 52.31 54.21 51.76 54.20
2805 NYSE WLK Thu, Oct 1, 2015 51.90 53.39 51.30 52.90
2804 NYSE WLK Wed, Sep 30, 2015 50.77 52.11 50.40 51.89
2803 NYSE WLK Tue, Sep 29, 2015 49.84 50.77 49.26 49.97
2802 NYSE WLK Mon, Sep 28, 2015 52.20 52.31 49.66 49.82
2801 NYSE WLK Fri, Sep 25, 2015 53.44 53.74 52.47 52.97
2800 NYSE WLK Thu, Sep 24, 2015 51.30 52.86 50.70 52.64
2799 NYSE WLK Wed, Sep 23, 2015 54.61 54.76 52.10 52.13
2798 NYSE WLK Tue, Sep 22, 2015 54.00 55.64 53.86 54.70
2797 NYSE WLK Mon, Sep 21, 2015 53.10 55.76 52.44 55.70
2796 NYSE WLK Fri, Sep 18, 2015 50.81 52.39 50.50 52.11
2795 NYSE WLK Thu, Sep 17, 2015 50.47 52.66 50.47 51.50
2794 NYSE WLK Wed, Sep 16, 2015 51.00 53.22 50.79 52.69
2793 NYSE WLK Tue, Sep 15, 2015 50.57 51.35 50.45 50.52
2792 NYSE WLK Mon, Sep 14, 2015 51.28 51.34 50.17 50.61
2791 NYSE WLK Fri, Sep 11, 2015 51.03 51.59 50.24 51.28
2790 NYSE WLK Thu, Sep 10, 2015 52.46 53.10 51.21 51.40
2789 NYSE WLK Wed, Sep 9, 2015 52.64 53.79 52.12 52.27
2788 NYSE WLK Tue, Sep 8, 2015 51.16 51.81 50.67 51.58
2787 NYSE WLK Fri, Sep 4, 2015 51.08 51.32 50.56 50.66
2786 NYSE WLK Thu, Sep 3, 2015 51.78 53.06 51.12 51.60
2785 NYSE WLK Wed, Sep 2, 2015 52.55 52.85 50.97 51.84
2784 NYSE WLK Tue, Sep 1, 2015 53.29 54.11 51.74 51.97
2783 NYSE WLK Mon, Aug 31, 2015 54.19 55.71 53.31 55.23
2782 NYSE WLK Fri, Aug 28, 2015 54.45 56.08 54.01 54.74
2781 NYSE WLK Thu, Aug 27, 2015 53.81 55.50 53.37 54.62
2780 NYSE WLK Wed, Aug 26, 2015 51.56 52.96 51.56 52.60
2779 NYSE WLK Tue, Aug 25, 2015 54.22 54.22 51.05 51.05
2778 NYSE WLK Mon, Aug 24, 2015 50.01 54.94 50.01 52.32
2777 NYSE WLK Fri, Aug 21, 2015 55.90 55.90 54.67 54.69
2776 NYSE WLK Thu, Aug 20, 2015 57.57 57.96 56.20 56.47
2775 NYSE WLK Wed, Aug 19, 2015 58.12 58.55 56.46 57.62
2774 NYSE WLK Tue, Aug 18, 2015 60.22 60.28 58.24 58.61
2773 NYSE WLK Mon, Aug 17, 2015 60.04 60.39 58.96 60.33
2772 NYSE WLK Fri, Aug 14, 2015 61.59 62.01 59.85 60.34
2771 NYSE WLK Thu, Aug 13, 2015 63.13 63.13 61.29 61.35
2770 NYSE WLK Wed, Aug 12, 2015 61.54 63.22 60.85 62.90
2769 NYSE WLK Tue, Aug 11, 2015 63.29 63.47 61.23 61.91
2768 NYSE WLK Mon, Aug 10, 2015 62.10 64.75 62.00 64.42
2767 NYSE WLK Fri, Aug 7, 2015 65.27 65.91 62.91 62.96
2766 NYSE WLK Thu, Aug 6, 2015 66.16 67.19 65.35 65.46
2765 NYSE WLK Wed, Aug 5, 2015 66.34 67.24 65.83 66.21
2764 NYSE WLK Tue, Aug 4, 2015 63.91 67.88 63.91 65.55
2763 NYSE WLK Mon, Aug 3, 2015 62.20 62.84 61.37 61.84
2762 NYSE WLK Fri, Jul 31, 2015 63.24 63.87 62.20 62.47
2761 NYSE WLK Thu, Jul 30, 2015 62.94 63.49 62.18 63.30
2760 NYSE WLK Wed, Jul 29, 2015 62.30 64.19 61.73 63.18
2759 NYSE WLK Tue, Jul 28, 2015 60.08 62.39 59.52 62.00
2758 NYSE WLK Mon, Jul 27, 2015 59.99 60.87 59.14 59.82
2757 NYSE WLK Fri, Jul 24, 2015 62.25 62.31 59.86 60.63
2756 NYSE WLK Thu, Jul 23, 2015 63.48 63.48 62.20 62.59
2755 NYSE WLK Wed, Jul 22, 2015 63.02 63.46 62.54 62.76
2754 NYSE WLK Tue, Jul 21, 2015 62.86 64.55 62.86 63.28
2753 NYSE WLK Mon, Jul 20, 2015 64.56 64.56 62.76 62.95
2752 NYSE WLK Fri, Jul 17, 2015 65.75 65.80 64.39 64.71
2751 NYSE WLK Thu, Jul 16, 2015 66.40 66.54 65.67 65.96
2750 NYSE WLK Wed, Jul 15, 2015 66.75 66.89 65.64 65.88
2749 NYSE WLK Tue, Jul 14, 2015 64.88 66.56 64.69 66.46
2748 NYSE WLK Mon, Jul 13, 2015 65.92 66.00 65.02 65.33
2747 NYSE WLK Fri, Jul 10, 2015 65.46 65.75 64.11 65.39
2746 NYSE WLK Thu, Jul 9, 2015 64.72 65.34 64.19 64.41
2745 NYSE WLK Wed, Jul 8, 2015 63.42 63.83 63.08 63.29
2744 NYSE WLK Tue, Jul 7, 2015 64.20 64.27 61.65 64.03
2743 NYSE WLK Mon, Jul 6, 2015 65.44 65.62 64.20 64.31
2742 NYSE WLK Thu, Jul 2, 2015 67.16 67.23 66.05 66.33
2741 NYSE WLK Wed, Jul 1, 2015 69.05 69.17 66.56 66.69
2740 NYSE WLK Tue, Jun 30, 2015 68.69 69.57 68.28 68.59
2739 NYSE WLK Mon, Jun 29, 2015 69.66 69.89 67.92 67.98
2738 NYSE WLK Fri, Jun 26, 2015 71.58 71.64 70.33 70.65
2737 NYSE WLK Thu, Jun 25, 2015 71.93 71.96 71.34 71.54
2736 NYSE WLK Wed, Jun 24, 2015 72.12 72.76 71.53 71.64
2735 NYSE WLK Tue, Jun 23, 2015 73.01 73.05 72.13 72.54
2734 NYSE WLK Mon, Jun 22, 2015 72.27 72.94 71.80 72.94
2733 NYSE WLK Fri, Jun 19, 2015 72.07 72.44 71.74 71.85
2732 NYSE WLK Thu, Jun 18, 2015 71.87 72.61 71.07 72.33
2731 NYSE WLK Wed, Jun 17, 2015 72.60 72.82 70.49 71.52
2730 NYSE WLK Tue, Jun 16, 2015 71.45 72.47 71.24 72.16
2729 NYSE WLK Mon, Jun 15, 2015 71.00 71.69 70.58 71.57
2728 NYSE WLK Fri, Jun 12, 2015 71.53 72.15 71.15 72.03
2727 NYSE WLK Thu, Jun 11, 2015 72.23 72.93 71.83 72.28
2726 NYSE WLK Wed, Jun 10, 2015 71.46 72.58 71.41 72.23
2725 NYSE WLK Tue, Jun 9, 2015 70.66 71.66 70.32 70.71
2724 NYSE WLK Mon, Jun 8, 2015 70.81 71.47 70.22 70.26
2723 NYSE WLK Fri, Jun 5, 2015 70.29 71.56 69.91 70.96
2722 NYSE WLK Thu, Jun 4, 2015 71.80 71.81 70.55 70.77
2721 NYSE WLK Wed, Jun 3, 2015 72.69 74.10 72.39 72.65
2720 NYSE WLK Tue, Jun 2, 2015 70.77 72.90 70.77 72.46
2719 NYSE WLK Mon, Jun 1, 2015 70.73 71.48 69.70 70.71
2718 NYSE WLK Fri, May 29, 2015 70.63 71.01 70.14 70.51
2717 NYSE WLK Thu, May 28, 2015 69.57 70.74 69.03 70.70
2716 NYSE WLK Wed, May 27, 2015 69.78 70.37 69.59 70.02
2715 NYSE WLK Tue, May 26, 2015 71.28 71.48 69.56 70.13
2714 NYSE WLK Fri, May 22, 2015 71.98 72.16 71.57 72.00
2713 NYSE WLK Thu, May 21, 2015 71.85 72.87 71.53 72.25
2712 NYSE WLK Wed, May 20, 2015 71.10 71.89 70.64 71.49
2711 NYSE WLK Tue, May 19, 2015 70.64 71.32 70.11 70.68
2710 NYSE WLK Mon, May 18, 2015 69.78 70.98 68.76 70.79
2709 NYSE WLK Fri, May 15, 2015 69.33 69.97 68.39 69.83
2708 NYSE WLK Thu, May 14, 2015 70.10 70.47 69.26 69.54
2707 NYSE WLK Wed, May 13, 2015 69.47 70.49 68.99 69.92
2706 NYSE WLK Tue, May 12, 2015 70.02 70.02 68.68 69.13
2705 NYSE WLK Mon, May 11, 2015 70.44 71.09 69.51 69.97
2704 NYSE WLK Fri, May 8, 2015 70.17 71.02 69.61 70.41
2703 NYSE WLK Thu, May 7, 2015 71.30 71.30 68.67 69.85
2702 NYSE WLK Wed, May 6, 2015 71.67 72.77 69.28 71.45
2701 NYSE WLK Tue, May 5, 2015 75.08 76.30 68.85 70.50
2700 NYSE WLK Mon, May 4, 2015 77.51 77.59 74.02 74.38
2699 NYSE WLK Fri, May 1, 2015 78.07 78.89 77.50 77.71
2698 NYSE WLK Thu, Apr 30, 2015 78.35 79.25 77.81 77.98
2697 NYSE WLK Wed, Apr 29, 2015 78.20 79.20 77.04 78.25
2696 NYSE WLK Tue, Apr 28, 2015 77.77 78.46 76.96 78.43
2695 NYSE WLK Mon, Apr 27, 2015 77.47 78.59 76.93 78.21
2694 NYSE WLK Fri, Apr 24, 2015 76.72 78.13 76.53 77.05
2693 NYSE WLK Thu, Apr 23, 2015 76.22 76.82 75.58 75.97
2692 NYSE WLK Wed, Apr 22, 2015 75.68 76.14 75.01 75.87
2691 NYSE WLK Tue, Apr 21, 2015 76.20 76.31 74.93 75.71
2690 NYSE WLK Mon, Apr 20, 2015 76.47 76.79 75.42 76.11
2689 NYSE WLK Fri, Apr 17, 2015 77.13 77.57 76.29 76.43
2688 NYSE WLK Thu, Apr 16, 2015 78.25 78.25 76.91 77.40
2687 NYSE WLK Wed, Apr 15, 2015 75.96 78.83 75.89 78.59
2686 NYSE WLK Tue, Apr 14, 2015 74.86 75.86 74.48 75.86
2685 NYSE WLK Mon, Apr 13, 2015 75.71 75.95 74.22 74.47
2684 NYSE WLK Fri, Apr 10, 2015 76.31 76.62 74.90 75.48
2683 NYSE WLK Thu, Apr 9, 2015 74.14 76.39 73.94 76.30
2682 NYSE WLK Wed, Apr 8, 2015 73.33 74.43 73.33 74.39
2681 NYSE WLK Tue, Apr 7, 2015 74.25 74.68 73.12 73.53
2680 NYSE WLK Mon, Apr 6, 2015 70.90 74.26 70.70 73.67
2679 NYSE WLK Thu, Apr 2, 2015 71.13 72.16 70.34 70.55
2678 NYSE WLK Wed, Apr 1, 2015 72.35 72.50 70.95 71.67
2677 NYSE WLK Tue, Mar 31, 2015 71.67 72.28 70.43 71.94
2676 NYSE WLK Mon, Mar 30, 2015 71.73 72.72 71.05 72.49
2675 NYSE WLK Fri, Mar 27, 2015 71.50 71.93 69.67 71.14
2674 NYSE WLK Thu, Mar 26, 2015 68.27 70.65 67.70 70.63
2673 NYSE WLK Wed, Mar 25, 2015 67.78 68.47 67.25 67.62
2672 NYSE WLK Tue, Mar 24, 2015 67.13 67.62 66.19 67.13
2671 NYSE WLK Mon, Mar 23, 2015 67.50 68.40 67.27 67.31
2670 NYSE WLK Fri, Mar 20, 2015 67.60 68.32 67.42 67.70
2669 NYSE WLK Thu, Mar 19, 2015 67.47 67.85 66.47 67.02
2668 NYSE WLK Wed, Mar 18, 2015 65.40 68.84 64.41 68.17
2667 NYSE WLK Tue, Mar 17, 2015 65.70 65.86 64.00 65.35
2666 NYSE WLK Mon, Mar 16, 2015 65.52 66.31 64.65 66.24
2665 NYSE WLK Fri, Mar 13, 2015 66.37 66.67 64.90 65.78
2664 NYSE WLK Thu, Mar 12, 2015 66.53 67.28 65.89 66.73
2663 NYSE WLK Wed, Mar 11, 2015 66.07 67.30 65.77 66.09
2662 NYSE WLK Tue, Mar 10, 2015 66.96 66.96 65.30 66.25
2661 NYSE WLK Mon, Mar 9, 2015 67.43 68.80 67.27 67.92
2660 NYSE WLK Fri, Mar 6, 2015 68.47 68.66 66.77 67.21
2659 NYSE WLK Thu, Mar 5, 2015 67.66 68.92 67.54 68.84
2658 NYSE WLK Wed, Mar 4, 2015 67.54 67.64 65.98 67.56
2657 NYSE WLK Tue, Mar 3, 2015 67.38 67.91 66.46 67.27
2656 NYSE WLK Mon, Mar 2, 2015 66.67 67.47 65.33 67.38
2655 NYSE WLK Fri, Feb 27, 2015 67.72 68.09 66.71 66.76
2654 NYSE WLK Thu, Feb 26, 2015 69.13 69.75 67.13 67.37
2653 NYSE WLK Wed, Feb 25, 2015 71.00 72.06 69.80 69.85
2652 NYSE WLK Tue, Feb 24, 2015 68.94 71.10 68.00 70.71
2651 NYSE WLK Mon, Feb 23, 2015 67.84 70.05 67.70 69.78
2650 NYSE WLK Fri, Feb 20, 2015 68.00 69.02 67.16 68.78
2649 NYSE WLK Thu, Feb 19, 2015 65.21 67.64 64.59 67.39
2648 NYSE WLK Wed, Feb 18, 2015 66.79 67.15 65.88 66.44
2647 NYSE WLK Tue, Feb 17, 2015 66.09 67.84 65.23 67.44
2646 NYSE WLK Fri, Feb 13, 2015 65.50 66.87 65.35 66.58
2645 NYSE WLK Thu, Feb 12, 2015 64.08 65.18 63.83 65.00
2644 NYSE WLK Wed, Feb 11, 2015 64.54 64.54 63.14 63.64
2643 NYSE WLK Tue, Feb 10, 2015 65.85 66.08 64.53 65.03
2642 NYSE WLK Mon, Feb 9, 2015 65.18 66.51 64.82 65.56
2641 NYSE WLK Fri, Feb 6, 2015 65.75 66.18 64.66 65.36
2640 NYSE WLK Thu, Feb 5, 2015 62.99 66.25 62.82 65.25
2639 NYSE WLK Wed, Feb 4, 2015 62.32 62.64 61.30 62.15
2638 NYSE WLK Tue, Feb 3, 2015 61.25 63.92 61.20 63.25
2637 NYSE WLK Mon, Feb 2, 2015 57.77 59.98 57.77 59.86
2636 NYSE WLK Fri, Jan 30, 2015 55.59 58.43 55.48 57.31
2635 NYSE WLK Thu, Jan 29, 2015 56.00 56.83 55.03 56.30
2634 NYSE WLK Wed, Jan 28, 2015 58.39 58.39 55.10 55.50
2633 NYSE WLK Tue, Jan 27, 2015 57.53 59.20 57.02 58.50
2632 NYSE WLK Mon, Jan 26, 2015 57.45 58.40 57.26 58.38
2631 NYSE WLK Fri, Jan 23, 2015 58.50 58.77 57.59 58.31
2630 NYSE WLK Thu, Jan 22, 2015 59.06 59.38 57.93 58.84
2629 NYSE WLK Wed, Jan 21, 2015 56.76 58.69 56.34 58.62
2628 NYSE WLK Tue, Jan 20, 2015 57.45 57.49 55.65 56.68
2627 NYSE WLK Fri, Jan 16, 2015 55.39 57.66 55.30 57.49
2626 NYSE WLK Thu, Jan 15, 2015 56.18 57.10 55.14 55.20
2625 NYSE WLK Wed, Jan 14, 2015 54.89 56.05 54.15 55.91
2624 NYSE WLK Tue, Jan 13, 2015 58.03 58.58 55.81 56.38
2623 NYSE WLK Mon, Jan 12, 2015 59.56 59.56 57.37 57.83
2622 NYSE WLK Fri, Jan 9, 2015 60.82 61.18 59.05 60.04
2621 NYSE WLK Thu, Jan 8, 2015 58.91 61.18 58.61 60.67
2620 NYSE WLK Wed, Jan 7, 2015 57.90 58.72 57.46 58.22
2619 NYSE WLK Tue, Jan 6, 2015 59.15 59.50 57.09 57.70
2618 NYSE WLK Mon, Jan 5, 2015 61.06 61.06 58.68 58.99
2617 NYSE WLK Fri, Jan 2, 2015 61.18 62.09 61.07 61.69
2616 NYSE WLK Wed, Dec 31, 2014 61.54 61.87 60.05 61.09
2615 NYSE WLK Tue, Dec 30, 2014 61.90 62.14 61.09 61.92
2614 NYSE WLK Mon, Dec 29, 2014 61.64 62.47 61.55 62.02
2613 NYSE WLK Fri, Dec 26, 2014 61.81 61.81 60.99 61.73
2612 NYSE WLK Wed, Dec 24, 2014 61.61 61.87 60.65 61.81
2611 NYSE WLK Tue, Dec 23, 2014 60.27 62.05 60.09 62.00
2610 NYSE WLK Mon, Dec 22, 2014 61.25 61.53 59.74 60.26
2609 NYSE WLK Fri, Dec 19, 2014 60.50 61.86 60.00 61.50
2608 NYSE WLK Thu, Dec 18, 2014 59.21 61.55 58.70 60.12
2607 NYSE WLK Wed, Dec 17, 2014 55.28 58.09 55.28 57.76
2606 NYSE WLK Tue, Dec 16, 2014 53.64 56.63 53.43 54.90
2605 NYSE WLK Mon, Dec 15, 2014 55.10 55.37 53.65 53.67
2604 NYSE WLK Fri, Dec 12, 2014 57.54 57.54 54.35 54.35
2603 NYSE WLK Thu, Dec 11, 2014 58.21 60.08 57.82 58.04
2602 NYSE WLK Wed, Dec 10, 2014 60.85 60.85 58.06 58.59
2601 NYSE WLK Tue, Dec 9, 2014 60.54 61.75 60.09 61.49
2600 NYSE WLK Mon, Dec 8, 2014 63.70 63.89 60.77 61.23
2599 NYSE WLK Fri, Dec 5, 2014 64.50 65.33 63.83 64.04
2598 NYSE WLK Thu, Dec 4, 2014 63.73 64.62 63.57 64.49
2597 NYSE WLK Wed, Dec 3, 2014 62.37 64.50 62.14 63.98
2596 NYSE WLK Tue, Dec 2, 2014 63.07 63.69 62.20 62.37
2595 NYSE WLK Mon, Dec 1, 2014 63.13 64.00 62.04 62.86
2594 NYSE WLK Fri, Nov 28, 2014 66.86 67.02 62.30 63.60
2593 NYSE WLK Wed, Nov 26, 2014 70.27 70.34 68.93 69.09
2592 NYSE WLK Tue, Nov 25, 2014 70.38 71.16 69.85 70.35
2591 NYSE WLK Mon, Nov 24, 2014 71.39 71.40 69.63 69.93
2590 NYSE WLK Fri, Nov 21, 2014 72.23 73.42 71.06 71.40
2589 NYSE WLK Thu, Nov 20, 2014 69.02 70.99 68.81 70.74
2588 NYSE WLK Wed, Nov 19, 2014 69.69 70.30 68.77 69.32
2587 NYSE WLK Tue, Nov 18, 2014 67.25 69.74 67.25 69.63
2586 NYSE WLK Mon, Nov 17, 2014 67.30 67.30 66.21 66.75
2585 NYSE WLK Fri, Nov 14, 2014 66.86 67.76 66.23 67.73
2584 NYSE WLK Thu, Nov 13, 2014 67.65 67.92 66.57 66.72
2583 NYSE WLK Wed, Nov 12, 2014 67.34 68.35 67.25 67.71
2582 NYSE WLK Tue, Nov 11, 2014 67.57 67.80 66.80 67.45
2581 NYSE WLK Mon, Nov 10, 2014 68.46 69.65 67.79 67.92
2580 NYSE WLK Fri, Nov 7, 2014 68.10 69.64 68.10 68.52
2579 NYSE WLK Thu, Nov 6, 2014 66.84 68.22 65.97 67.92
2578 NYSE WLK Wed, Nov 5, 2014 66.60 68.12 65.38 67.33
2577 NYSE WLK Tue, Nov 4, 2014 70.00 70.00 64.51 66.21
2576 NYSE WLK Mon, Nov 3, 2014 70.85 72.30 70.41 71.04
2575 NYSE WLK Fri, Oct 31, 2014 70.36 71.02 69.39 70.55
2574 NYSE WLK Thu, Oct 30, 2014 69.80 70.92 69.38 70.16
2573 NYSE WLK Wed, Oct 29, 2014 70.00 70.80 69.29 70.00
2572 NYSE WLK Tue, Oct 28, 2014 69.98 70.88 69.54 69.87
2571 NYSE WLK Mon, Oct 27, 2014 73.12 73.12 68.15 69.20
2570 NYSE WLK Fri, Oct 24, 2014 75.28 75.28 72.38 74.28
2569 NYSE WLK Thu, Oct 23, 2014 75.93 76.62 73.00 75.68
2568 NYSE WLK Wed, Oct 22, 2014 77.83 78.00 75.18 75.30
2567 NYSE WLK Tue, Oct 21, 2014 74.36 77.93 74.16 76.79
2566 NYSE WLK Mon, Oct 20, 2014 73.07 74.07 72.85 73.58
2565 NYSE WLK Fri, Oct 17, 2014 71.83 75.18 71.82 73.04
2564 NYSE WLK Thu, Oct 16, 2014 68.38 71.99 68.35 70.73
2563 NYSE WLK Wed, Oct 15, 2014 68.42 70.03 66.32 69.91
2562 NYSE WLK Tue, Oct 14, 2014 71.39 72.12 68.17 69.93
2561 NYSE WLK Mon, Oct 13, 2014 75.68 76.85 70.79 70.84
2560 NYSE WLK Fri, Oct 10, 2014 79.29 79.29 75.39 75.45
2559 NYSE WLK Thu, Oct 9, 2014 82.23 82.55 79.24 79.31
2558 NYSE WLK Wed, Oct 8, 2014 80.11 81.82 77.83 81.77
2557 NYSE WLK Tue, Oct 7, 2014 81.91 82.15 80.18 80.22
2556 NYSE WLK Mon, Oct 6, 2014 82.04 82.72 81.85 82.22
2555 NYSE WLK Fri, Oct 3, 2014 83.57 83.73 81.84 81.85
2554 NYSE WLK Thu, Oct 2, 2014 83.02 83.35 79.94 82.88
2553 NYSE WLK Wed, Oct 1, 2014 86.23 86.23 82.75 83.43
2552 NYSE WLK Tue, Sep 30, 2014 90.18 90.44 86.53 86.59
2551 NYSE WLK Mon, Sep 29, 2014 90.23 90.98 89.29 90.24
2550 NYSE WLK Fri, Sep 26, 2014 90.32 91.75 90.03 91.25
2549 NYSE WLK Thu, Sep 25, 2014 92.12 92.27 90.05 90.13
2548 NYSE WLK Wed, Sep 24, 2014 91.91 92.44 90.67 92.13
2547 NYSE WLK Tue, Sep 23, 2014 93.08 93.52 91.83 91.85
2546 NYSE WLK Mon, Sep 22, 2014 95.21 95.21 93.13 93.18
2545 NYSE WLK Fri, Sep 19, 2014 94.81 95.54 94.37 95.29
2544 NYSE WLK Thu, Sep 18, 2014 94.32 94.99 94.26 94.52
2543 NYSE WLK Wed, Sep 17, 2014 94.15 94.78 93.47 93.88
2542 NYSE WLK Tue, Sep 16, 2014 93.15 94.29 92.87 93.73
2541 NYSE WLK Mon, Sep 15, 2014 93.11 93.36 91.88 93.36
2540 NYSE WLK Fri, Sep 12, 2014 94.66 94.82 92.91 93.23
2539 NYSE WLK Thu, Sep 11, 2014 94.68 95.14 94.04 94.85
2538 NYSE WLK Wed, Sep 10, 2014 94.64 95.51 94.09 95.23
2537 NYSE WLK Tue, Sep 9, 2014 96.23 96.47 94.53 94.67
2536 NYSE WLK Mon, Sep 8, 2014 96.80 97.22 96.01 96.19
2535 NYSE WLK Fri, Sep 5, 2014 96.65 97.29 96.27 97.24
2534 NYSE WLK Thu, Sep 4, 2014 97.65 98.23 96.44 96.63
2533 NYSE WLK Wed, Sep 3, 2014 98.43 98.44 97.08 97.80
2532 NYSE WLK Tue, Sep 2, 2014 97.25 98.35 96.97 97.96
2531 NYSE WLK Fri, Aug 29, 2014 96.22 97.16 96.08 97.13
2530 NYSE WLK Thu, Aug 28, 2014 95.34 96.40 94.99 96.09
2529 NYSE WLK Wed, Aug 27, 2014 95.29 95.69 94.64 95.63
2528 NYSE WLK Tue, Aug 26, 2014 95.00 95.51 94.50 94.92
2527 NYSE WLK Mon, Aug 25, 2014 94.53 95.36 94.20 94.97
2526 NYSE WLK Fri, Aug 22, 2014 93.64 93.77 93.01 93.56
2525 NYSE WLK Thu, Aug 21, 2014 93.73 94.01 93.09 94.00
2524 NYSE WLK Wed, Aug 20, 2014 92.76 93.49 92.52 93.37
2523 NYSE WLK Tue, Aug 19, 2014 92.03 93.02 92.03 92.94
2522 NYSE WLK Mon, Aug 18, 2014 91.03 92.35 90.81 91.78
2521 NYSE WLK Fri, Aug 15, 2014 89.30 89.64 88.53 89.17
2520 NYSE WLK Thu, Aug 14, 2014 89.26 89.48 88.75 89.04
2519 NYSE WLK Wed, Aug 13, 2014 87.70 89.17 87.30 88.92
2518 NYSE WLK Tue, Aug 12, 2014 87.81 88.19 87.17 87.47
2517 NYSE WLK Mon, Aug 11, 2014 88.08 89.20 87.74 87.78
2516 NYSE WLK Fri, Aug 8, 2014 87.52 87.89 86.85 87.76
2515 NYSE WLK Thu, Aug 7, 2014 87.70 88.48 86.65 87.07
2514 NYSE WLK Wed, Aug 6, 2014 85.54 88.16 85.29 87.53
2513 NYSE WLK Tue, Aug 5, 2014 85.59 87.00 84.03 85.53
2512 NYSE WLK Mon, Aug 4, 2014 87.74 89.42 87.34 89.27
2511 NYSE WLK Fri, Aug 1, 2014 86.91 87.94 86.88 87.74
2510 NYSE WLK Thu, Jul 31, 2014 89.00 89.15 87.05 87.39
2509 NYSE WLK Wed, Jul 30, 2014 90.58 90.80 89.11 89.46
2508 NYSE WLK Tue, Jul 29, 2014 91.42 91.42 89.77 90.00
2507 NYSE WLK Mon, Jul 28, 2014 91.25 91.97 90.87 91.58
2506 NYSE WLK Fri, Jul 25, 2014 89.90 91.80 89.00 91.25
2505 NYSE WLK Thu, Jul 24, 2014 89.91 90.00 89.46 89.78
2504 NYSE WLK Wed, Jul 23, 2014 88.77 89.75 88.66 89.68
2503 NYSE WLK Tue, Jul 22, 2014 87.07 88.76 86.96 88.60
2502 NYSE WLK Mon, Jul 21, 2014 86.20 87.34 86.15 86.95
2501 NYSE WLK Fri, Jul 18, 2014 85.03 86.75 84.79 86.38
2500 NYSE WLK Thu, Jul 17, 2014 84.55 84.98 84.01 84.75
2499 NYSE WLK Wed, Jul 16, 2014 84.79 85.05 84.05 84.54
2498 NYSE WLK Tue, Jul 15, 2014 85.00 85.54 84.04 84.47
2497 NYSE WLK Mon, Jul 14, 2014 86.05 86.13 84.22 84.65
2496 NYSE WLK Fri, Jul 11, 2014 84.57 85.67 83.70 85.64
2495 NYSE WLK Thu, Jul 10, 2014 84.13 84.81 83.38 84.36
2494 NYSE WLK Wed, Jul 9, 2014 84.71 85.41 84.23 85.38
2493 NYSE WLK Tue, Jul 8, 2014 84.71 84.99 83.25 84.22
2492 NYSE WLK Mon, Jul 7, 2014 85.66 85.77 84.89 85.00
2491 NYSE WLK Thu, Jul 3, 2014 85.30 85.94 85.30 85.66
2490 NYSE WLK Wed, Jul 2, 2014 84.77 85.58 84.45 85.10
2489 NYSE WLK Tue, Jul 1, 2014 84.15 85.40 83.91 84.88
2488 NYSE WLK Mon, Jun 30, 2014 83.57 84.18 83.37 83.76
2487 NYSE WLK Fri, Jun 27, 2014 82.77 83.70 82.77 83.56
2486 NYSE WLK Thu, Jun 26, 2014 83.00 83.17 82.37 83.05
2485 NYSE WLK Wed, Jun 25, 2014 83.24 84.29 82.83 83.05
2484 NYSE WLK Tue, Jun 24, 2014 84.50 85.01 83.50 83.53
2483 NYSE WLK Mon, Jun 23, 2014 84.70 84.85 84.08 84.59
2482 NYSE WLK Fri, Jun 20, 2014 84.42 84.91 84.23 84.77
2481 NYSE WLK Thu, Jun 19, 2014 83.75 84.54 83.64 84.36
2480 NYSE WLK Wed, Jun 18, 2014 83.22 83.79 82.76 83.75
2479 NYSE WLK Tue, Jun 17, 2014 82.30 83.16 82.11 82.83
2478 NYSE WLK Mon, Jun 16, 2014 82.16 82.73 81.74 82.38
2477 NYSE WLK Fri, Jun 13, 2014 82.22 82.77 81.50 82.41
2476 NYSE WLK Thu, Jun 12, 2014 82.14 83.17 81.96 82.19
2475 NYSE WLK Wed, Jun 11, 2014 81.96 82.32 81.51 82.15
2474 NYSE WLK Tue, Jun 10, 2014 81.79 82.18 81.24 82.14
2473 NYSE WLK Mon, Jun 9, 2014 82.11 82.47 81.78 81.93
2472 NYSE WLK Fri, Jun 6, 2014 81.48 82.35 81.19 82.33
2471 NYSE WLK Thu, Jun 5, 2014 81.70 81.90 80.53 81.24
2470 NYSE WLK Wed, Jun 4, 2014 80.75 81.92 80.38 81.20
2469 NYSE WLK Tue, Jun 3, 2014 80.74 81.74 80.62 80.89
2468 NYSE WLK Mon, Jun 2, 2014 80.71 81.41 80.45 81.10
2467 NYSE WLK Fri, May 30, 2014 81.31 81.51 80.48 80.85
2466 NYSE WLK Thu, May 29, 2014 79.85 81.46 78.92 81.24
2465 NYSE WLK Wed, May 28, 2014 79.21 79.64 78.12 79.14
2464 NYSE WLK Tue, May 27, 2014 77.55 78.00 76.56 77.02
2463 NYSE WLK Fri, May 23, 2014 76.72 77.18 76.37 77.00
2462 NYSE WLK Thu, May 22, 2014 77.01 77.33 76.52 76.58
2461 NYSE WLK Wed, May 21, 2014 76.95 77.69 76.51 76.90
2460 NYSE WLK Tue, May 20, 2014 76.23 77.35 75.81 76.71
2459 NYSE WLK Mon, May 19, 2014 75.36 77.29 75.07 76.22
2458 NYSE WLK Fri, May 16, 2014 74.25 75.51 73.39 75.45
2457 NYSE WLK Thu, May 15, 2014 74.40 74.64 72.84 74.03
2456 NYSE WLK Wed, May 14, 2014 74.76 75.10 74.29 74.49
2455 NYSE WLK Tue, May 13, 2014 75.83 75.92 74.73 74.79
2454 NYSE WLK Mon, May 12, 2014 75.11 75.97 75.11 75.53
2453 NYSE WLK Fri, May 9, 2014 75.53 75.78 74.10 74.75
2452 NYSE WLK Thu, May 8, 2014 76.85 77.15 75.07 75.64
2451 NYSE WLK Wed, May 7, 2014 76.81 77.64 76.50 77.01
2450 NYSE WLK Tue, May 6, 2014 75.29 77.51 74.73 76.73
2449 NYSE WLK Mon, May 5, 2014 71.10 76.58 71.01 75.21
2448 NYSE WLK Fri, May 2, 2014 70.90 71.47 70.42 70.86
2447 NYSE WLK Thu, May 1, 2014 71.07 71.13 70.41 70.86
2446 NYSE WLK Wed, Apr 30, 2014 70.40 71.48 69.98 71.20
2445 NYSE WLK Tue, Apr 29, 2014 68.00 73.38 67.83 70.53
2444 NYSE WLK Mon, Apr 28, 2014 65.27 65.78 63.46 64.19
2443 NYSE WLK Fri, Apr 25, 2014 65.54 65.54 64.63 64.94
2442 NYSE WLK Thu, Apr 24, 2014 66.57 66.75 64.99 65.77
2441 NYSE WLK Wed, Apr 23, 2014 66.88 67.19 65.79 66.08
2440 NYSE WLK Tue, Apr 22, 2014 65.78 66.92 65.49 66.67
2439 NYSE WLK Mon, Apr 21, 2014 65.51 65.94 64.99 65.55
2438 NYSE WLK Thu, Apr 17, 2014 65.16 65.74 64.72 65.25
2437 NYSE WLK Wed, Apr 16, 2014 63.96 65.30 63.62 65.03
2436 NYSE WLK Tue, Apr 15, 2014 62.52 63.33 61.71 63.23
2435 NYSE WLK Mon, Apr 14, 2014 63.05 63.73 62.05 62.36
2434 NYSE WLK Fri, Apr 11, 2014 63.25 64.00 62.48 62.56
2433 NYSE WLK Thu, Apr 10, 2014 65.77 65.89 63.54 63.79
2432 NYSE WLK Wed, Apr 9, 2014 64.53 65.99 64.41 65.70
2431 NYSE WLK Tue, Apr 8, 2014 64.62 65.60 64.12 64.52
2430 NYSE WLK Mon, Apr 7, 2014 67.27 67.27 64.22 64.56
2429 NYSE WLK Fri, Apr 4, 2014 68.90 69.31 66.75 67.44
2428 NYSE WLK Thu, Apr 3, 2014 68.26 68.85 67.86 68.17
2427 NYSE WLK Wed, Apr 2, 2014 67.29 68.23 66.98 68.19
2426 NYSE WLK Tue, Apr 1, 2014 66.45 67.16 66.45 67.10
2425 NYSE WLK Mon, Mar 31, 2014 66.09 66.51 65.52 66.18
2424 NYSE WLK Fri, Mar 28, 2014 64.58 65.65 64.42 65.43
2423 NYSE WLK Thu, Mar 27, 2014 65.03 65.52 63.25 64.39
2422 NYSE WLK Wed, Mar 26, 2014 66.99 67.10 65.21 65.25
2421 NYSE WLK Tue, Mar 25, 2014 67.04 67.56 66.30 66.32
2420 NYSE WLK Mon, Mar 24, 2014 67.33 67.87 65.84 66.56
2419 NYSE WLK Fri, Mar 21, 2014 67.74 68.25 66.96 66.97
2418 NYSE WLK Thu, Mar 20, 2014 66.59 67.58 66.31 67.55
2417 NYSE WLK Wed, Mar 19, 2014 67.62 67.80 66.32 66.88
2416 NYSE WLK Tue, Mar 18, 2014 67.10 67.89 67.10 67.58
2415 NYSE WLK Mon, Mar 17, 2014 66.80 67.70 66.67 66.95
2414 NYSE WLK Fri, Mar 14, 2014 66.38 66.98 66.34 66.55
2413 NYSE WLK Thu, Mar 13, 2014 67.52 67.72 66.33 66.46
2412 NYSE WLK Wed, Mar 12, 2014 67.38 67.57 66.76 67.27
2411 NYSE WLK Tue, Mar 11, 2014 68.37 69.00 67.57 67.74
2410 NYSE WLK Mon, Mar 10, 2014 68.08 68.56 67.52 68.44
2409 NYSE WLK Fri, Mar 7, 2014 69.16 69.17 68.00 68.22
2408 NYSE WLK Thu, Mar 6, 2014 68.24 69.41 67.78 68.73
2407 NYSE WLK Wed, Mar 5, 2014 67.46 68.22 67.22 67.99
2406 NYSE WLK Tue, Mar 4, 2014 67.88 68.20 67.03 67.53
2405 NYSE WLK Mon, Mar 3, 2014 65.86 67.15 65.86 66.96
2404 NYSE WLK Fri, Feb 28, 2014 67.29 67.92 66.41 66.67
2403 NYSE WLK Thu, Feb 27, 2014 66.05 66.67 65.87 66.15
2402 NYSE WLK Wed, Feb 26, 2014 65.63 66.84 65.39 66.44
2401 NYSE WLK Tue, Feb 25, 2014 65.58 65.89 65.05 65.33
2400 NYSE WLK Mon, Feb 24, 2014 66.06 67.00 65.96 65.97
2399 NYSE WLK Fri, Feb 21, 2014 66.58 66.67 65.79 65.92
2398 NYSE WLK Thu, Feb 20, 2014 65.25 65.99 63.00 65.75
2397 NYSE WLK Wed, Feb 19, 2014 64.70 65.38 64.29 64.57
2396 NYSE WLK Tue, Feb 18, 2014 65.25 65.87 64.64 65.15
2395 NYSE WLK Fri, Feb 14, 2014 63.58 64.74 63.22 64.64
2394 NYSE WLK Thu, Feb 13, 2014 61.82 63.70 61.82 63.42
2393 NYSE WLK Wed, Feb 12, 2014 62.75 63.58 62.58 62.75
2392 NYSE WLK Tue, Feb 11, 2014 61.82 63.17 61.82 62.69
2391 NYSE WLK Mon, Feb 10, 2014 61.75 62.24 61.31 62.05
2390 NYSE WLK Fri, Feb 7, 2014 61.27 62.04 60.85 61.89
2389 NYSE WLK Thu, Feb 6, 2014 59.41 60.70 59.41 60.63
2388 NYSE WLK Wed, Feb 5, 2014 58.86 59.38 58.10 59.10
2387 NYSE WLK Tue, Feb 4, 2014 59.64 60.25 58.91 59.42
2386 NYSE WLK Mon, Feb 3, 2014 60.56 61.09 58.69 59.08
2385 NYSE WLK Fri, Jan 31, 2014 60.04 62.20 60.04 60.77
2384 NYSE WLK Thu, Jan 30, 2014 59.70 61.15 59.44 60.80
2383 NYSE WLK Wed, Jan 29, 2014 58.71 59.75 58.38 58.92
2382 NYSE WLK Tue, Jan 28, 2014 58.20 59.49 58.20 58.95
2381 NYSE WLK Mon, Jan 27, 2014 57.90 58.57 57.01 57.98
2380 NYSE WLK Fri, Jan 24, 2014 58.97 59.02 57.59 57.66
2379 NYSE WLK Thu, Jan 23, 2014 60.67 60.67 58.22 59.76
2378 NYSE WLK Wed, Jan 22, 2014 61.66 61.66 60.44 61.34
2377 NYSE WLK Tue, Jan 21, 2014 61.87 62.32 61.06 61.48
2376 NYSE WLK Fri, Jan 17, 2014 61.35 61.76 60.13 61.05
2375 NYSE WLK Thu, Jan 16, 2014 61.88 62.11 61.43 61.69
2374 NYSE WLK Wed, Jan 15, 2014 61.40 62.27 61.27 62.07
2373 NYSE WLK Tue, Jan 14, 2014 60.17 61.55 60.17 61.34
2372 NYSE WLK Mon, Jan 13, 2014 60.70 61.75 59.78 59.91
2371 NYSE WLK Fri, Jan 10, 2014 60.00 61.37 60.00 60.85
2370 NYSE WLK Thu, Jan 9, 2014 59.91 60.25 59.35 59.84
2369 NYSE WLK Wed, Jan 8, 2014 59.73 59.96 59.13 59.72
2368 NYSE WLK Tue, Jan 7, 2014 59.25 59.81 59.20 59.65
2367 NYSE WLK Mon, Jan 6, 2014 60.08 60.08 59.04 59.19
2366 NYSE WLK Fri, Jan 3, 2014 60.17 60.23 59.73 60.04
2365 NYSE WLK Thu, Jan 2, 2014 60.56 60.78 59.65 60.13
2364 NYSE WLK Tue, Dec 31, 2013 60.66 61.08 60.52 61.04
2363 NYSE WLK Mon, Dec 30, 2013 60.32 60.59 59.69 60.52
2362 NYSE WLK Fri, Dec 27, 2013 59.73 60.72 59.69 60.32
2361 NYSE WLK Thu, Dec 26, 2013 59.31 59.46 58.63 59.15
2360 NYSE WLK Tue, Dec 24, 2013 58.62 59.41 58.62 59.27
2359 NYSE WLK Mon, Dec 23, 2013 58.97 59.11 58.41 58.49
2358 NYSE WLK Fri, Dec 20, 2013 57.77 58.82 57.56 58.50
2357 NYSE WLK Thu, Dec 19, 2013 58.01 58.14 57.19 57.57
2356 NYSE WLK Wed, Dec 18, 2013 57.40 58.31 56.89 58.25
2355 NYSE WLK Tue, Dec 17, 2013 57.35 57.50 56.48 57.43
2354 NYSE WLK Mon, Dec 16, 2013 56.55 57.41 56.55 57.10
2353 NYSE WLK Fri, Dec 13, 2013 56.30 56.75 56.13 56.39
2352 NYSE WLK Thu, Dec 12, 2013 55.86 56.49 55.51 56.10
2351 NYSE WLK Wed, Dec 11, 2013 57.16 57.34 55.63 55.88
2350 NYSE WLK Tue, Dec 10, 2013 57.79 58.36 57.16 57.24
2349 NYSE WLK Mon, Dec 9, 2013 57.61 58.04 57.15 57.80
2348 NYSE WLK Fri, Dec 6, 2013 56.85 57.93 56.85 57.46
2347 NYSE WLK Thu, Dec 5, 2013 56.83 56.99 56.17 56.45
2346 NYSE WLK Wed, Dec 4, 2013 57.05 57.43 55.89 56.97
2345 NYSE WLK Tue, Dec 3, 2013 57.22 57.75 56.87 57.25
2344 NYSE WLK Mon, Dec 2, 2013 56.84 58.99 56.59 57.54
2343 NYSE WLK Fri, Nov 29, 2013 57.02 57.13 56.18 56.29
2342 NYSE WLK Wed, Nov 27, 2013 57.00 57.60 56.55 56.87
2341 NYSE WLK Tue, Nov 26, 2013 56.42 57.21 56.32 56.66
2340 NYSE WLK Mon, Nov 25, 2013 57.76 57.76 55.94 56.36
2339 NYSE WLK Fri, Nov 22, 2013 57.48 58.00 57.30 57.85
2338 NYSE WLK Thu, Nov 21, 2013 57.19 57.79 57.00 57.41
2337 NYSE WLK Wed, Nov 20, 2013 57.39 57.57 56.76 57.03
2336 NYSE WLK Tue, Nov 19, 2013 58.02 58.02 56.95 57.32
2335 NYSE WLK Mon, Nov 18, 2013 58.48 58.69 57.91 58.14
2334 NYSE WLK Fri, Nov 15, 2013 58.06 58.23 57.50 58.23
2333 NYSE WLK Thu, Nov 14, 2013 57.91 58.08 57.31 57.90
2332 NYSE WLK Wed, Nov 13, 2013 56.08 57.83 55.94 57.78
2331 NYSE WLK Tue, Nov 12, 2013 57.23 57.33 56.27 56.36
2330 NYSE WLK Mon, Nov 11, 2013 57.22 57.35 56.43 57.24
2329 NYSE WLK Fri, Nov 8, 2013 55.25 57.74 55.25 57.10
2328 NYSE WLK Thu, Nov 7, 2013 56.01 57.20 54.99 55.09
2327 NYSE WLK Wed, Nov 6, 2013 54.17 55.02 53.89 54.42
2326 NYSE WLK Tue, Nov 5, 2013 53.86 54.14 53.21 53.75
2325 NYSE WLK Mon, Nov 4, 2013 53.35 54.43 53.30 54.20
2324 NYSE WLK Fri, Nov 1, 2013 53.75 54.05 53.12 53.29
2323 NYSE WLK Thu, Oct 31, 2013 53.62 54.31 53.52 53.71
2322 NYSE WLK Wed, Oct 30, 2013 53.99 54.72 53.46 53.77
2321 NYSE WLK Tue, Oct 29, 2013 54.16 54.16 53.32 53.99
2320 NYSE WLK Mon, Oct 28, 2013 55.37 55.40 53.46 54.01
2319 NYSE WLK Fri, Oct 25, 2013 55.72 55.78 53.86 55.28
2318 NYSE WLK Thu, Oct 24, 2013 55.44 55.64 54.88 55.33
2317 NYSE WLK Wed, Oct 23, 2013 55.20 55.72 54.75 55.44
2316 NYSE WLK Tue, Oct 22, 2013 55.61 56.37 54.94 55.38
2315 NYSE WLK Mon, Oct 21, 2013 55.56 55.75 54.90 55.44
2314 NYSE WLK Fri, Oct 18, 2013 55.80 55.80 55.23 55.52
2313 NYSE WLK Thu, Oct 17, 2013 54.52 55.84 54.52 55.39
2312 NYSE WLK Wed, Oct 16, 2013 54.57 55.41 54.06 54.67
2311 NYSE WLK Tue, Oct 15, 2013 53.99 54.64 53.75 54.25
2310 NYSE WLK Mon, Oct 14, 2013 53.68 54.30 53.55 54.23
2309 NYSE WLK Fri, Oct 11, 2013 53.87 54.24 53.71 54.10
2308 NYSE WLK Thu, Oct 10, 2013 53.46 54.20 53.27 53.98
2307 NYSE WLK Wed, Oct 9, 2013 52.71 53.66 51.75 52.53
2306 NYSE WLK Tue, Oct 8, 2013 53.69 53.99 52.34 52.48
2305 NYSE WLK Mon, Oct 7, 2013 53.47 54.46 53.07 53.78
2304 NYSE WLK Fri, Oct 4, 2013 53.90 54.06 53.46 53.87
2303 NYSE WLK Thu, Oct 3, 2013 54.00 54.00 52.65 53.93
2302 NYSE WLK Wed, Oct 2, 2013 53.80 54.08 52.89 54.06
2301 NYSE WLK Tue, Oct 1, 2013 52.98 54.21 52.83 53.80
2300 NYSE WLK Mon, Sep 30, 2013 51.96 52.60 51.87 52.33
2299 NYSE WLK Fri, Sep 27, 2013 52.93 53.01 52.26 52.38
2298 NYSE WLK Thu, Sep 26, 2013 52.22 53.16 52.22 53.08
2297 NYSE WLK Wed, Sep 25, 2013 51.49 52.05 51.03 51.85
2296 NYSE WLK Tue, Sep 24, 2013 51.54 51.91 51.02 51.37
2295 NYSE WLK Mon, Sep 23, 2013 52.08 52.08 51.14 51.43
2294 NYSE WLK Fri, Sep 20, 2013 53.13 53.36 52.05 52.22
2293 NYSE WLK Thu, Sep 19, 2013 52.90 53.50 52.78 53.21
2292 NYSE WLK Wed, Sep 18, 2013 52.40 53.09 51.73 52.61
2291 NYSE WLK Tue, Sep 17, 2013 52.43 52.70 52.05 52.31
2290 NYSE WLK Mon, Sep 16, 2013 52.21 52.74 51.76 52.39
2289 NYSE WLK Fri, Sep 13, 2013 51.23 52.04 50.65 51.64
2288 NYSE WLK Thu, Sep 12, 2013 51.48 51.87 50.83 51.20
2287 NYSE WLK Wed, Sep 11, 2013 52.45 52.66 50.57 51.63
2286 NYSE WLK Tue, Sep 10, 2013 53.75 53.90 53.13 53.41
2285 NYSE WLK Mon, Sep 9, 2013 53.00 53.81 52.68 53.36
2284 NYSE WLK Fri, Sep 6, 2013 52.50 52.68 51.34 52.61
2283 NYSE WLK Thu, Sep 5, 2013 51.53 52.43 51.53 52.36
2282 NYSE WLK Wed, Sep 4, 2013 51.14 51.89 50.65 51.62
2281 NYSE WLK Tue, Sep 3, 2013 51.29 52.06 50.69 51.16
2280 NYSE WLK Fri, Aug 30, 2013 51.15 51.33 50.41 50.59
2279 NYSE WLK Thu, Aug 29, 2013 50.61 51.47 50.37 51.05
2278 NYSE WLK Wed, Aug 28, 2013 50.15 51.23 50.15 50.73
2277 NYSE WLK Tue, Aug 27, 2013 51.17 51.41 50.09 50.12
2276 NYSE WLK Mon, Aug 26, 2013 51.92 52.46 51.42 51.66
2275 NYSE WLK Fri, Aug 23, 2013 51.46 51.60 50.71 51.45
2274 NYSE WLK Thu, Aug 22, 2013 50.25 51.75 50.22 51.35
2273 NYSE WLK Wed, Aug 21, 2013 49.85 50.44 49.40 50.06
2272 NYSE WLK Tue, Aug 20, 2013 49.19 50.28 49.19 49.94
2271 NYSE WLK Mon, Aug 19, 2013 50.02 50.59 49.19 49.28
2270 NYSE WLK Fri, Aug 16, 2013 50.52 51.29 49.91 50.30
2269 NYSE WLK Thu, Aug 15, 2013 51.07 51.56 49.86 50.76
2268 NYSE WLK Wed, Aug 14, 2013 51.88 52.19 51.46 51.89
2267 NYSE WLK Tue, Aug 13, 2013 50.66 52.23 50.52 51.80
2266 NYSE WLK Mon, Aug 12, 2013 50.43 50.89 50.24 50.56
2265 NYSE WLK Fri, Aug 9, 2013 50.82 51.16 49.88 50.52
2264 NYSE WLK Thu, Aug 8, 2013 50.50 50.93 49.85 50.46
2263 NYSE WLK Wed, Aug 7, 2013 50.41 50.73 49.74 50.04
2262 NYSE WLK Tue, Aug 6, 2013 51.39 51.39 50.04 50.59
2261 NYSE WLK Mon, Aug 5, 2013 51.77 52.24 51.51 51.63
2260 NYSE WLK Fri, Aug 2, 2013 52.28 52.29 51.55 51.92
2259 NYSE WLK Thu, Aug 1, 2013 52.73 53.17 52.04 52.42
2258 NYSE WLK Wed, Jul 31, 2013 52.94 52.99 51.94 52.01
2257 NYSE WLK Tue, Jul 30, 2013 50.50 53.56 49.79 52.77
2256 NYSE WLK Mon, Jul 29, 2013 49.46 49.87 49.02 49.72
2255 NYSE WLK Fri, Jul 26, 2013 49.77 50.19 49.21 49.59
2254 NYSE WLK Thu, Jul 25, 2013 49.30 50.32 49.29 49.93
2253 NYSE WLK Wed, Jul 24, 2013 50.45 50.72 49.20 49.37
2252 NYSE WLK Tue, Jul 23, 2013 50.37 50.57 49.69 50.20
2251 NYSE WLK Mon, Jul 22, 2013 50.19 50.47 49.89 49.97
2250 NYSE WLK Fri, Jul 19, 2013 49.44 50.24 49.41 50.16
2249 NYSE WLK Thu, Jul 18, 2013 50.30 50.40 49.35 49.51
2248 NYSE WLK Wed, Jul 17, 2013 50.50 50.64 49.81 50.31
2247 NYSE WLK Tue, Jul 16, 2013 50.76 50.95 49.51 50.21
2246 NYSE WLK Mon, Jul 15, 2013 50.53 50.83 50.15 50.59
2245 NYSE WLK Fri, Jul 12, 2013 50.30 50.39 49.90 50.38
2244 NYSE WLK Thu, Jul 11, 2013 50.34 50.80 49.88 50.30
2243 NYSE WLK Wed, Jul 10, 2013 49.87 50.00 49.36 49.89
2242 NYSE WLK Tue, Jul 9, 2013 49.74 50.50 49.38 50.11
2241 NYSE WLK Mon, Jul 8, 2013 49.93 50.57 49.57 49.65
2240 NYSE WLK Fri, Jul 5, 2013 49.59 49.85 48.98 49.55
2239 NYSE WLK Wed, Jul 3, 2013 48.66 49.15 48.45 49.03
2238 NYSE WLK Tue, Jul 2, 2013 49.09 49.35 47.93 48.86
2237 NYSE WLK Mon, Jul 1, 2013 48.45 49.78 48.41 49.13
2236 NYSE WLK Fri, Jun 28, 2013 48.50 48.68 47.90 48.21
2235 NYSE WLK Thu, Jun 27, 2013 48.29 49.62 48.13 48.92
2234 NYSE WLK Wed, Jun 26, 2013 48.14 48.55 47.31 47.84
2233 NYSE WLK Tue, Jun 25, 2013 47.79 48.78 46.95 47.87
2232 NYSE WLK Mon, Jun 24, 2013 47.00 47.99 45.51 47.59
2231 NYSE WLK Fri, Jun 21, 2013 47.19 47.55 45.80 46.94
2230 NYSE WLK Thu, Jun 20, 2013 47.23 47.44 46.64 46.87
2229 NYSE WLK Wed, Jun 19, 2013 48.84 48.90 48.37 48.50
2228 NYSE WLK Tue, Jun 18, 2013 48.72 49.12 48.54 48.97
2227 NYSE WLK Mon, Jun 17, 2013 49.57 49.63 48.14 48.50
2226 NYSE WLK Fri, Jun 14, 2013 47.72 49.75 47.72 48.93
2225 NYSE WLK Thu, Jun 13, 2013 46.00 48.50 45.78 48.06
2224 NYSE WLK Wed, Jun 12, 2013 47.22 47.36 46.16 46.17
2223 NYSE WLK Tue, Jun 11, 2013 46.50 47.47 46.08 46.78
2222 NYSE WLK Mon, Jun 10, 2013 47.18 47.49 46.62 47.27
2221 NYSE WLK Fri, Jun 7, 2013 46.75 47.69 46.20 47.04
2220 NYSE WLK Thu, Jun 6, 2013 45.83 46.75 45.39 46.66
2219 NYSE WLK Wed, Jun 5, 2013 46.49 46.49 44.96 45.79
2218 NYSE WLK Tue, Jun 4, 2013 47.50 48.14 46.36 46.58
2217 NYSE WLK Mon, Jun 3, 2013 46.98 47.39 46.54 47.30
2216 NYSE WLK Fri, May 31, 2013 46.30 47.47 46.28 46.70
2215 NYSE WLK Thu, May 30, 2013 46.62 46.99 46.28 46.74
2214 NYSE WLK Wed, May 29, 2013 46.65 47.07 45.71 46.52
2213 NYSE WLK Tue, May 28, 2013 46.81 47.57 46.77 47.11
2212 NYSE WLK Fri, May 24, 2013 45.74 46.11 45.25 46.00
2211 NYSE WLK Thu, May 23, 2013 45.21 46.34 44.76 46.13
2210 NYSE WLK Wed, May 22, 2013 46.79 47.71 45.68 46.14
2209 NYSE WLK Tue, May 21, 2013 46.51 47.63 46.51 46.91
2208 NYSE WLK Mon, May 20, 2013 46.29 47.49 45.97 46.57
2207 NYSE WLK Fri, May 17, 2013 45.70 46.34 45.53 46.25
2206 NYSE WLK Thu, May 16, 2013 45.89 46.50 45.09 45.27
2205 NYSE WLK Wed, May 15, 2013 46.07 46.91 45.45 45.67
2204 NYSE WLK Tue, May 14, 2013 45.06 46.16 45.06 46.16
2203 NYSE WLK Mon, May 13, 2013 45.41 45.75 44.70 45.05
2202 NYSE WLK Fri, May 10, 2013 44.65 45.58 44.53 45.53
2201 NYSE WLK Thu, May 9, 2013 45.64 45.98 44.56 44.67
2200 NYSE WLK Wed, May 8, 2013 44.90 45.81 44.62 45.75
2199 NYSE WLK Tue, May 7, 2013 45.03 46.18 43.78 45.73
2198 NYSE WLK Mon, May 6, 2013 43.50 44.65 42.33 44.47
2197 NYSE WLK Fri, May 3, 2013 40.82 42.13 40.65 41.23
2196 NYSE WLK Thu, May 2, 2013 39.71 40.46 39.31 40.26
2195 NYSE WLK Wed, May 1, 2013 41.38 41.54 39.23 39.31
2194 NYSE WLK Tue, Apr 30, 2013 41.85 41.98 41.27 41.57
2193 NYSE WLK Mon, Apr 29, 2013 42.48 42.74 41.54 42.03
2192 NYSE WLK Fri, Apr 26, 2013 43.88 44.08 41.98 42.24
2191 NYSE WLK Thu, Apr 25, 2013 43.38 44.49 43.38 44.05
2190 NYSE WLK Wed, Apr 24, 2013 41.82 44.17 41.62 43.07
2189 NYSE WLK Tue, Apr 23, 2013 41.84 41.98 41.29 41.77
2188 NYSE WLK Mon, Apr 22, 2013 41.37 42.15 40.58 41.71
2187 NYSE WLK Fri, Apr 19, 2013 39.81 41.36 39.68 41.15
2186 NYSE WLK Thu, Apr 18, 2013 40.41 40.54 38.36 39.42
2185 NYSE WLK Wed, Apr 17, 2013 40.47 40.73 40.00 40.41
2184 NYSE WLK Tue, Apr 16, 2013 40.09 41.63 39.91 41.09
2183 NYSE WLK Mon, Apr 15, 2013 41.64 41.81 39.41 39.53
2182 NYSE WLK Fri, Apr 12, 2013 43.35 43.45 41.94 42.06
2181 NYSE WLK Thu, Apr 11, 2013 43.14 44.14 42.93 43.76
2180 NYSE WLK Wed, Apr 10, 2013 43.61 43.61 42.70 43.16
2179 NYSE WLK Tue, Apr 9, 2013 42.97 43.86 42.86 43.38
2178 NYSE WLK Mon, Apr 8, 2013 42.96 43.10 41.98 42.75
2177 NYSE WLK Fri, Apr 5, 2013 42.46 43.15 41.76 42.96
2176 NYSE WLK Thu, Apr 4, 2013 43.05 43.81 42.68 43.36
2175 NYSE WLK Wed, Apr 3, 2013 43.60 43.61 42.12 43.10
2174 NYSE WLK Tue, Apr 2, 2013 45.37 45.47 43.28 43.46
2173 NYSE WLK Mon, Apr 1, 2013 46.51 46.58 44.82 45.00
2172 NYSE WLK Thu, Mar 28, 2013 46.71 47.34 46.38 46.75
2171 NYSE WLK Wed, Mar 27, 2013 47.04 47.04 46.13 46.83
2170 NYSE WLK Tue, Mar 26, 2013 47.66 48.00 46.89 47.37
2169 NYSE WLK Mon, Mar 25, 2013 47.39 48.29 46.62 47.32
2168 NYSE WLK Fri, Mar 22, 2013 47.39 47.78 46.89 47.03
2167 NYSE WLK Thu, Mar 21, 2013 48.32 49.14 47.09 47.22
2166 NYSE WLK Wed, Mar 20, 2013 48.39 48.92 48.23 48.61
2165 NYSE WLK Tue, Mar 19, 2013 47.97 47.98 46.99 47.94
2164 NYSE WLK Mon, Mar 18, 2013 47.81 48.16 47.50 47.78
2163 NYSE WLK Fri, Mar 15, 2013 48.25 48.62 47.82 48.59
2162 NYSE WLK Thu, Mar 14, 2013 47.61 48.47 47.58 48.30
2161 NYSE WLK Wed, Mar 13, 2013 47.67 47.67 47.11 47.37
2160 NYSE WLK Tue, Mar 12, 2013 46.93 47.96 46.92 47.43
2159 NYSE WLK Mon, Mar 11, 2013 46.62 46.97 46.05 46.90
2158 NYSE WLK Fri, Mar 8, 2013 45.88 47.00 45.78 46.93
2157 NYSE WLK Thu, Mar 7, 2013 46.05 46.05 45.19 45.54
2156 NYSE WLK Wed, Mar 6, 2013 44.31 45.60 44.31 45.52
2155 NYSE WLK Tue, Mar 5, 2013 43.98 44.61 43.84 44.13
2154 NYSE WLK Mon, Mar 4, 2013 43.76 44.11 43.42 43.84
2153 NYSE WLK Fri, Mar 1, 2013 43.39 44.33 42.43 43.91
2152 NYSE WLK Thu, Feb 28, 2013 43.22 43.67 43.00 43.11
2151 NYSE WLK Wed, Feb 27, 2013 41.76 43.71 41.76 43.21
2150 NYSE WLK Tue, Feb 26, 2013 42.72 43.02 42.32 42.69
2149 NYSE WLK Mon, Feb 25, 2013 44.33 44.47 42.39 42.39
2148 NYSE WLK Fri, Feb 22, 2013 43.14 44.12 42.90 44.01
2147 NYSE WLK Thu, Feb 21, 2013 43.37 43.45 42.00 42.90
2146 NYSE WLK Wed, Feb 20, 2013 46.46 46.76 43.46 43.53
2145 NYSE WLK Tue, Feb 19, 2013 46.38 46.94 45.81 46.29
2144 NYSE WLK Fri, Feb 15, 2013 45.92 46.15 45.25 45.92
2143 NYSE WLK Thu, Feb 14, 2013 46.08 46.43 45.73 45.90
2142 NYSE WLK Wed, Feb 13, 2013 46.03 46.83 45.89 46.38
2141 NYSE WLK Tue, Feb 12, 2013 45.38 45.77 44.95 45.62
2140 NYSE WLK Mon, Feb 11, 2013 46.10 46.10 45.34 45.47
2139 NYSE WLK Fri, Feb 8, 2013 46.14 46.67 45.79 46.10
2138 NYSE WLK Thu, Feb 7, 2013 45.58 45.62 44.57 45.60
2137 NYSE WLK Wed, Feb 6, 2013 45.09 45.40 44.94 45.34
2136 NYSE WLK Tue, Feb 5, 2013 45.10 45.58 45.01 45.32
2135 NYSE WLK Mon, Feb 4, 2013 45.60 45.60 44.65 44.74
2134 NYSE WLK Fri, Feb 1, 2013 46.13 46.64 45.50 45.89
2133 NYSE WLK Thu, Jan 31, 2013 44.49 47.03 44.19 45.93
2132 NYSE WLK Wed, Jan 30, 2013 44.80 44.99 44.57 44.76
2131 NYSE WLK Tue, Jan 29, 2013 44.16 44.96 44.08 44.81
2130 NYSE WLK Mon, Jan 28, 2013 44.30 44.45 43.88 44.03
2129 NYSE WLK Fri, Jan 25, 2013 44.54 44.66 43.80 44.07
2128 NYSE WLK Thu, Jan 24, 2013 43.66 44.58 43.66 44.22
2127 NYSE WLK Wed, Jan 23, 2013 43.52 43.72 43.06 43.62
2126 NYSE WLK Tue, Jan 22, 2013 43.38 43.53 42.96 43.39
2125 NYSE WLK Fri, Jan 18, 2013 43.19 43.39 42.61 43.30
2124 NYSE WLK Thu, Jan 17, 2013 42.74 43.51 42.61 43.03
2123 NYSE WLK Wed, Jan 16, 2013 42.48 42.48 42.02 42.34
2122 NYSE WLK Tue, Jan 15, 2013 42.86 42.94 42.19 42.67
2121 NYSE WLK Mon, Jan 14, 2013 42.74 43.08 42.63 42.95
2120 NYSE WLK Fri, Jan 11, 2013 42.75 42.81 42.37 42.70
2119 NYSE WLK Thu, Jan 10, 2013 42.45 43.16 42.00 42.95
2118 NYSE WLK Wed, Jan 9, 2013 41.84 42.55 41.60 42.38
2117 NYSE WLK Tue, Jan 8, 2013 41.44 41.76 40.97 41.65
2116 NYSE WLK Mon, Jan 7, 2013 41.29 41.50 41.16 41.47
2115 NYSE WLK Fri, Jan 4, 2013 41.03 41.50 40.90 41.40
2114 NYSE WLK Thu, Jan 3, 2013 41.57 41.61 40.74 40.87
2113 NYSE WLK Wed, Jan 2, 2013 40.80 41.93 40.71 41.60
2112 NYSE WLK Mon, Dec 31, 2012 38.66 40.00 38.66 39.65
2111 NYSE WLK Fri, Dec 28, 2012 38.98 39.26 38.63 38.70
2110 NYSE WLK Thu, Dec 27, 2012 39.80 39.96 38.57 39.30
2109 NYSE WLK Wed, Dec 26, 2012 40.00 40.23 39.43 39.83
2108 NYSE WLK Mon, Dec 24, 2012 39.25 40.02 39.13 40.01
2107 NYSE WLK Fri, Dec 21, 2012 38.32 39.46 38.26 39.27
2106 NYSE WLK Thu, Dec 20, 2012 39.26 39.32 38.73 39.31
2105 NYSE WLK Wed, Dec 19, 2012 40.05 40.12 39.26 39.34
2104 NYSE WLK Tue, Dec 18, 2012 39.70 40.12 39.45 40.05
2103 NYSE WLK Mon, Dec 17, 2012 39.32 39.58 39.20 39.45
2102 NYSE WLK Fri, Dec 14, 2012 38.20 39.25 38.19 39.14
2101 NYSE WLK Thu, Dec 13, 2012 38.53 38.77 38.10 38.38
2100 NYSE WLK Wed, Dec 12, 2012 38.84 38.84 38.39 38.62
2099 NYSE WLK Tue, Dec 11, 2012 39.10 39.10 38.11 38.57
2098 NYSE WLK Mon, Dec 10, 2012 37.90 38.63 37.84 38.61
2097 NYSE WLK Fri, Dec 7, 2012 36.36 38.07 36.30 37.98
2096 NYSE WLK Thu, Dec 6, 2012 36.01 36.50 36.01 36.26
2095 NYSE WLK Wed, Dec 5, 2012 36.06 36.62 35.94 36.40
2094 NYSE WLK Tue, Dec 4, 2012 36.30 36.71 35.86 36.16
2093 NYSE WLK Mon, Dec 3, 2012 36.70 36.90 36.01 36.29
2092 NYSE WLK Fri, Nov 30, 2012 36.31 36.48 35.98 36.21
2091 NYSE WLK Thu, Nov 29, 2012 35.96 36.50 35.83 36.33
2090 NYSE WLK Wed, Nov 28, 2012 35.06 35.68 34.51 35.66
2089 NYSE WLK Tue, Nov 27, 2012 35.41 35.80 34.92 35.06
2088 NYSE WLK Mon, Nov 26, 2012 37.69 38.00 37.08 37.38
2087 NYSE WLK Fri, Nov 23, 2012 37.45 38.32 37.30 37.95
2086 NYSE WLK Wed, Nov 21, 2012 37.02 37.05 36.69 37.05
2085 NYSE WLK Tue, Nov 20, 2012 37.04 37.47 36.59 36.92
2084 NYSE WLK Mon, Nov 19, 2012 37.01 37.52 36.52 37.27
2083 NYSE WLK Fri, Nov 16, 2012 35.55 36.35 35.15 36.22
2082 NYSE WLK Thu, Nov 15, 2012 36.52 36.64 34.94 35.00
2081 NYSE WLK Wed, Nov 14, 2012 38.26 38.47 36.57 36.70
2080 NYSE WLK Tue, Nov 13, 2012 37.54 38.48 36.50 38.07
2079 NYSE WLK Mon, Nov 12, 2012 38.56 38.89 37.90 38.44
2078 NYSE WLK Fri, Nov 9, 2012 38.39 39.50 38.22 38.56
2077 NYSE WLK Thu, Nov 8, 2012 38.73 39.59 37.45 38.73
2076 NYSE WLK Wed, Nov 7, 2012 38.96 39.84 38.92 39.18
2075 NYSE WLK Tue, Nov 6, 2012 39.90 40.09 39.69 39.80
2074 NYSE WLK Mon, Nov 5, 2012 38.99 39.68 38.84 39.61
2073 NYSE WLK Fri, Nov 2, 2012 39.68 39.93 38.88 38.95
2072 NYSE WLK Thu, Nov 1, 2012 38.15 39.89 37.97 39.68
2071 NYSE WLK Wed, Oct 31, 2012 38.74 38.97 37.85 38.03
2070 NYSE WLK Fri, Oct 26, 2012 38.00 38.98 37.41 38.47
2069 NYSE WLK Thu, Oct 25, 2012 38.24 38.71 37.38 37.79
2068 NYSE WLK Wed, Oct 24, 2012 37.78 38.54 37.09 38.02
2067 NYSE WLK Tue, Oct 23, 2012 36.89 37.70 36.19 37.36
2066 NYSE WLK Mon, Oct 22, 2012 37.58 38.10 37.54 37.76
2065 NYSE WLK Fri, Oct 19, 2012 38.61 38.61 37.56 37.75
2064 NYSE WLK Thu, Oct 18, 2012 38.61 38.92 37.71 38.75
2063 NYSE WLK Wed, Oct 17, 2012 38.61 39.47 38.30 38.83
2062 NYSE WLK Tue, Oct 16, 2012 36.29 40.25 36.29 38.89
2061 NYSE WLK Mon, Oct 15, 2012 35.40 36.16 35.00 36.09
2060 NYSE WLK Fri, Oct 12, 2012 36.12 36.63 35.45 35.49
2059 NYSE WLK Thu, Oct 11, 2012 36.58 36.77 35.88 36.01
2058 NYSE WLK Wed, Oct 10, 2012 37.16 37.24 35.85 36.05
2057 NYSE WLK Tue, Oct 9, 2012 37.50 38.05 36.86 37.23
2056 NYSE WLK Mon, Oct 8, 2012 37.64 37.83 37.20 37.40
2055 NYSE WLK Fri, Oct 5, 2012 37.74 38.15 37.70 37.89
2054 NYSE WLK Thu, Oct 4, 2012 37.20 37.62 36.98 37.52
2053 NYSE WLK Wed, Oct 3, 2012 37.21 37.25 36.78 36.98
2052 NYSE WLK Tue, Oct 2, 2012 37.10 37.20 36.48 37.20
2051 NYSE WLK Mon, Oct 1, 2012 37.06 37.33 36.71 36.92
2050 NYSE WLK Fri, Sep 28, 2012 36.48 36.61 36.13 36.53
2049 NYSE WLK Thu, Sep 27, 2012 36.32 36.64 36.07 36.58
2048 NYSE WLK Wed, Sep 26, 2012 36.30 36.50 35.62 35.98
2047 NYSE WLK Tue, Sep 25, 2012 37.50 37.61 36.30 36.34
2046 NYSE WLK Mon, Sep 24, 2012 37.41 37.52 36.95 37.27
2045 NYSE WLK Fri, Sep 21, 2012 37.79 38.23 37.61 37.62
2044 NYSE WLK Thu, Sep 20, 2012 37.20 37.42 36.75 37.38
2043 NYSE WLK Wed, Sep 19, 2012 37.25 37.78 37.17 37.57
2042 NYSE WLK Tue, Sep 18, 2012 37.25 37.56 36.67 37.05
2041 NYSE WLK Mon, Sep 17, 2012 37.68 37.71 36.98 37.15
2040 NYSE WLK Fri, Sep 14, 2012 37.27 38.23 37.14 37.76
2039 NYSE WLK Thu, Sep 13, 2012 36.12 37.33 36.02 37.03
2038 NYSE WLK Wed, Sep 12, 2012 35.85 36.15 35.79 36.13
2037 NYSE WLK Tue, Sep 11, 2012 35.70 35.80 35.32 35.65
2036 NYSE WLK Mon, Sep 10, 2012 35.52 35.93 35.52 35.60
2035 NYSE WLK Fri, Sep 7, 2012 35.97 35.97 35.10 35.72
2034 NYSE WLK Thu, Sep 6, 2012 34.25 36.07 34.13 35.74
2033 NYSE WLK Wed, Sep 5, 2012 34.75 34.81 34.36 34.65
2032 NYSE WLK Tue, Sep 4, 2012 34.52 34.77 34.19 34.68
2031 NYSE WLK Fri, Aug 31, 2012 34.55 34.57 34.01 34.39
2030 NYSE WLK Thu, Aug 30, 2012 34.51 34.80 34.09 34.18
2029 NYSE WLK Wed, Aug 29, 2012 34.38 34.95 34.11 34.63
2028 NYSE WLK Tue, Aug 28, 2012 34.10 34.60 34.01 34.41
2027 NYSE WLK Mon, Aug 27, 2012 33.53 34.52 33.27 34.48
2026 NYSE WLK Fri, Aug 24, 2012 34.55 34.85 34.46 34.75
2025 NYSE WLK Thu, Aug 23, 2012 34.69 34.82 34.39 34.57
2024 NYSE WLK Wed, Aug 22, 2012 34.33 34.90 34.23 34.83
2023 NYSE WLK Tue, Aug 21, 2012 34.78 35.08 34.42 34.45
2022 NYSE WLK Mon, Aug 20, 2012 34.49 34.73 34.16 34.65
2021 NYSE WLK Fri, Aug 17, 2012 34.11 34.55 34.11 34.31
2020 NYSE WLK Thu, Aug 16, 2012 33.54 34.44 33.48 34.17
2019 NYSE WLK Wed, Aug 15, 2012 33.24 33.57 33.12 33.47
2018 NYSE WLK Tue, Aug 14, 2012 33.56 33.66 33.18 33.35
2017 NYSE WLK Mon, Aug 13, 2012 33.40 33.47 32.75 33.26
2016 NYSE WLK Fri, Aug 10, 2012 33.57 33.65 33.09 33.39
2015 NYSE WLK Thu, Aug 9, 2012 34.00 34.02 33.37 33.53
2014 NYSE WLK Wed, Aug 8, 2012 34.50 34.54 33.98 34.00
2013 NYSE WLK Tue, Aug 7, 2012 34.35 34.93 34.20 34.47
2012 NYSE WLK Mon, Aug 6, 2012 32.94 34.20 32.93 34.05
2011 NYSE WLK Fri, Aug 3, 2012 32.50 33.34 32.50 33.03
2010 NYSE WLK Thu, Aug 2, 2012 29.75 32.38 29.32 32.08
2009 NYSE WLK Wed, Aug 1, 2012 30.00 30.04 29.60 29.72
2008 NYSE WLK Tue, Jul 31, 2012 30.04 30.26 29.67 29.68
2007 NYSE WLK Mon, Jul 30, 2012 30.44 30.44 29.93 30.09
2006 NYSE WLK Fri, Jul 27, 2012 29.18 30.50 29.16 30.43
2005 NYSE WLK Thu, Jul 26, 2012 28.76 28.99 28.38 28.73
2004 NYSE WLK Wed, Jul 25, 2012 28.55 28.73 28.05 28.33
2003 NYSE WLK Tue, Jul 24, 2012 28.76 28.82 28.01 28.30
2002 NYSE WLK Mon, Jul 23, 2012 28.14 28.74 27.82 28.65
2001 NYSE WLK Fri, Jul 20, 2012 28.95 29.12 28.77 29.04
2000 NYSE WLK Thu, Jul 19, 2012 29.42 29.84 29.15 29.40
1999 NYSE WLK Wed, Jul 18, 2012 28.09 29.23 28.09 29.15
1998 NYSE WLK Tue, Jul 17, 2012 27.58 28.45 27.49 28.34
1997 NYSE WLK Mon, Jul 16, 2012 27.41 27.66 27.21 27.58
1996 NYSE WLK Fri, Jul 13, 2012 27.09 27.68 27.00 27.54
1995 NYSE WLK Thu, Jul 12, 2012 26.65 27.22 26.22 26.97
1994 NYSE WLK Wed, Jul 11, 2012 27.22 27.31 26.75 27.01
1993 NYSE WLK Tue, Jul 10, 2012 27.87 28.00 26.97 27.19
1992 NYSE WLK Mon, Jul 9, 2012 27.60 27.93 27.12 27.69
1991 NYSE WLK Fri, Jul 6, 2012 27.08 27.28 26.71 27.03
1990 NYSE WLK Thu, Jul 5, 2012 26.83 28.11 26.70 27.54
1989 NYSE WLK Tue, Jul 3, 2012 26.11 26.91 26.06 26.79
1988 NYSE WLK Mon, Jul 2, 2012 26.32 26.45 25.43 26.06
1987 NYSE WLK Fri, Jun 29, 2012 26.09 26.21 25.71 26.13
1986 NYSE WLK Thu, Jun 28, 2012 24.92 25.39 24.76 25.26
1985 NYSE WLK Wed, Jun 27, 2012 25.11 25.47 24.96 25.35
1984 NYSE WLK Tue, Jun 26, 2012 24.97 25.35 24.77 25.00
1983 NYSE WLK Mon, Jun 25, 2012 25.02 25.12 24.64 24.82
1982 NYSE WLK Fri, Jun 22, 2012 25.10 25.66 24.54 25.58
1981 NYSE WLK Thu, Jun 21, 2012 26.07 26.29 24.72 24.85
1980 NYSE WLK Wed, Jun 20, 2012 26.52 26.64 25.99 26.07
1979 NYSE WLK Tue, Jun 19, 2012 25.71 26.58 25.71 26.43
1978 NYSE WLK Mon, Jun 18, 2012 24.77 25.66 24.60 25.56
1977 NYSE WLK Fri, Jun 15, 2012 24.42 25.10 24.38 25.06
1976 NYSE WLK Thu, Jun 14, 2012 24.94 25.01 24.07 24.34
1975 NYSE WLK Wed, Jun 13, 2012 25.99 25.99 24.63 24.90
1974 NYSE WLK Tue, Jun 12, 2012 25.13 26.28 25.04 26.22
1973 NYSE WLK Mon, Jun 11, 2012 26.28 26.28 24.99 25.02
1972 NYSE WLK Fri, Jun 8, 2012 25.81 25.98 25.30 25.85
1971 NYSE WLK Thu, Jun 7, 2012 26.43 26.80 25.87 26.01
1970 NYSE WLK Wed, Jun 6, 2012 25.38 26.34 25.37 25.96
1969 NYSE WLK Tue, Jun 5, 2012 24.32 25.16 24.32 24.95
1968 NYSE WLK Mon, Jun 4, 2012 25.07 25.07 24.23 24.45
1967 NYSE WLK Fri, Jun 1, 2012 26.51 26.51 24.83 24.93
1966 NYSE WLK Thu, May 31, 2012 27.54 27.71 26.64 27.25
1965 NYSE WLK Wed, May 30, 2012 28.42 28.42 27.53 27.61
1964 NYSE WLK Tue, May 29, 2012 28.26 28.85 28.19 28.81
1963 NYSE WLK Fri, May 25, 2012 27.90 28.07 27.43 27.92
1962 NYSE WLK Thu, May 24, 2012 27.79 27.95 27.06 27.88
1961 NYSE WLK Wed, May 23, 2012 26.41 27.19 25.98 27.05
1960 NYSE WLK Tue, May 22, 2012 26.81 27.20 26.42 26.84
1959 NYSE WLK Mon, May 21, 2012 25.73 26.90 25.63 26.56
1958 NYSE WLK Fri, May 18, 2012 26.05 26.48 25.64 25.73
1957 NYSE WLK Thu, May 17, 2012 27.29 27.29 25.58 25.80
1956 NYSE WLK Wed, May 16, 2012 27.83 28.17 27.22 27.33
1955 NYSE WLK Tue, May 15, 2012 28.29 28.38 27.31 27.64
1954 NYSE WLK Mon, May 14, 2012 28.55 28.70 28.20 28.24
1953 NYSE WLK Fri, May 11, 2012 28.51 29.31 28.33 29.09
1952 NYSE WLK Thu, May 10, 2012 28.80 29.13 28.54 28.85
1951 NYSE WLK Wed, May 9, 2012 27.92 28.58 27.75 28.47
1950 NYSE WLK Tue, May 8, 2012 28.39 28.57 27.71 28.43
1949 NYSE WLK Mon, May 7, 2012 28.13 28.82 27.58 28.75
1948 NYSE WLK Fri, May 4, 2012 29.61 29.67 28.21 28.35
1947 NYSE WLK Thu, May 3, 2012 30.43 30.52 29.72 29.85
1946 NYSE WLK Wed, May 2, 2012 30.66 30.75 30.01 30.23
1945 NYSE WLK Tue, May 1, 2012 30.50 32.57 30.50 30.97
1944 NYSE WLK Mon, Apr 30, 2012 32.25 32.31 31.51 31.98
1943 NYSE WLK Fri, Apr 27, 2012 31.99 32.71 31.88 32.66
1942 NYSE WLK Thu, Apr 26, 2012 30.95 31.98 30.43 31.95
1941 NYSE WLK Wed, Apr 25, 2012 30.60 31.24 30.59 31.20
1940 NYSE WLK Tue, Apr 24, 2012 30.52 30.65 29.70 30.15
1939 NYSE WLK Mon, Apr 23, 2012 29.98 30.68 29.44 30.62
1938 NYSE WLK Fri, Apr 20, 2012 30.45 31.05 30.22 30.51
1937 NYSE WLK Thu, Apr 19, 2012 30.50 30.50 29.80 30.22
1936 NYSE WLK Wed, Apr 18, 2012 30.65 30.78 30.20 30.40
1935 NYSE WLK Tue, Apr 17, 2012 30.43 31.33 30.43 30.73
1934 NYSE WLK Mon, Apr 16, 2012 30.55 30.67 29.91 30.21
1933 NYSE WLK Fri, Apr 13, 2012 30.50 30.53 30.01 30.21
1932 NYSE WLK Thu, Apr 12, 2012 30.03 30.83 29.98 30.56
1931 NYSE WLK Wed, Apr 11, 2012 30.27 30.33 29.72 29.93
1930 NYSE WLK Tue, Apr 10, 2012 30.99 31.16 29.86 29.94
1929 NYSE WLK Mon, Apr 9, 2012 30.42 31.09 30.34 31.06
1928 NYSE WLK Thu, Apr 5, 2012 31.54 32.20 31.26 31.26
1927 NYSE WLK Wed, Apr 4, 2012 31.83 32.17 31.51 31.70
1926 NYSE WLK Tue, Apr 3, 2012 32.71 32.85 32.13 32.37
1925 NYSE WLK Mon, Apr 2, 2012 32.40 32.96 32.31 32.81
1924 NYSE WLK Fri, Mar 30, 2012 32.76 32.78 31.89 32.40
1923 NYSE WLK Thu, Mar 29, 2012 32.15 32.40 31.54 32.34
1922 NYSE WLK Wed, Mar 28, 2012 33.00 33.00 31.75 32.48
1921 NYSE WLK Tue, Mar 27, 2012 32.76 33.37 32.64 33.09
1920 NYSE WLK Mon, Mar 26, 2012 32.46 32.91 32.24 32.86
1919 NYSE WLK Fri, Mar 23, 2012 31.63 32.31 31.51 32.11
1918 NYSE WLK Thu, Mar 22, 2012 32.21 32.33 30.88 31.47
1917 NYSE WLK Wed, Mar 21, 2012 32.17 32.68 31.88 32.61
1916 NYSE WLK Tue, Mar 20, 2012 32.03 32.17 31.92 31.98
1915 NYSE WLK Mon, Mar 19, 2012 32.53 32.67 32.38 32.47
1914 NYSE WLK Fri, Mar 16, 2012 32.48 32.87 32.29 32.63
1913 NYSE WLK Thu, Mar 15, 2012 32.37 32.67 31.94 32.43
1912 NYSE WLK Wed, Mar 14, 2012 32.87 32.93 31.95 32.23
1911 NYSE WLK Tue, Mar 13, 2012 31.09 33.46 31.08 32.85
1910 NYSE WLK Mon, Mar 12, 2012 30.86 30.98 30.61 30.88
1909 NYSE WLK Fri, Mar 9, 2012 30.16 30.86 30.16 30.75
1908 NYSE WLK Thu, Mar 8, 2012 29.21 30.22 29.21 30.14
1907 NYSE WLK Wed, Mar 7, 2012 28.31 28.98 28.31 28.93
1906 NYSE WLK Tue, Mar 6, 2012 28.66 28.66 28.05 28.15
1905 NYSE WLK Mon, Mar 5, 2012 30.03 30.03 28.75 29.10
1904 NYSE WLK Fri, Mar 2, 2012 30.01 30.53 29.97 30.27
1903 NYSE WLK Thu, Mar 1, 2012 30.17 30.24 29.84 30.01
1902 NYSE WLK Wed, Feb 29, 2012 30.81 30.95 29.99 30.12
1901 NYSE WLK Tue, Feb 28, 2012 30.80 31.09 30.44 30.77
1900 NYSE WLK Mon, Feb 27, 2012 28.90 31.13 28.85 30.52
1899 NYSE WLK Fri, Feb 24, 2012 28.75 29.11 28.63 28.82
1898 NYSE WLK Thu, Feb 23, 2012 29.03 29.29 28.53 29.00
1897 NYSE WLK Wed, Feb 22, 2012 28.79 29.22 28.54 29.04
1896 NYSE WLK Tue, Feb 21, 2012 30.50 31.71 28.63 29.00
1895 NYSE WLK Fri, Feb 17, 2012 30.11 30.34 29.77 30.25
1894 NYSE WLK Thu, Feb 16, 2012 28.99 30.15 28.97 30.11
1893 NYSE WLK Wed, Feb 15, 2012 28.93 29.20 28.53 29.03
1892 NYSE WLK Tue, Feb 14, 2012 28.65 29.38 28.25 28.76
1891 NYSE WLK Mon, Feb 13, 2012 29.54 29.93 29.05 29.83
1890 NYSE WLK Fri, Feb 10, 2012 29.41 29.50 28.57 29.23
1889 NYSE WLK Thu, Feb 9, 2012 30.00 30.07 29.65 29.70
1888 NYSE WLK Wed, Feb 8, 2012 30.45 30.77 29.62 29.86
1887 NYSE WLK Tue, Feb 7, 2012 30.20 30.50 29.83 30.45
1886 NYSE WLK Mon, Feb 6, 2012 29.48 30.23 29.36 30.21
1885 NYSE WLK Fri, Feb 3, 2012 29.52 29.96 29.47 29.61
1884 NYSE WLK Thu, Feb 2, 2012 29.88 29.99 28.99 29.17
1883 NYSE WLK Wed, Feb 1, 2012 28.75 30.00 28.57 29.98
1882 NYSE WLK Tue, Jan 31, 2012 28.74 29.29 28.52 29.23
1881 NYSE WLK Mon, Jan 30, 2012 28.19 28.67 28.02 28.60
1880 NYSE WLK Fri, Jan 27, 2012 27.95 28.70 27.85 28.48
1879 NYSE WLK Thu, Jan 26, 2012 28.90 29.00 28.29 28.43
1878 NYSE WLK Wed, Jan 25, 2012 28.73 29.00 28.39 28.93
1877 NYSE WLK Tue, Jan 24, 2012 27.85 28.70 27.73 28.64
1876 NYSE WLK Mon, Jan 23, 2012 28.19 28.45 27.75 27.99
1875 NYSE WLK Fri, Jan 20, 2012 27.93 28.40 27.81 28.35
1874 NYSE WLK Thu, Jan 19, 2012 28.06 28.37 27.10 27.84
1873 NYSE WLK Wed, Jan 18, 2012 28.15 28.89 27.93 28.01
1872 NYSE WLK Tue, Jan 17, 2012 27.34 28.25 26.92 28.17
1871 NYSE WLK Fri, Jan 13, 2012 25.18 27.83 24.88 26.94
1870 NYSE WLK Thu, Jan 12, 2012 24.14 26.22 24.03 25.62
1869 NYSE WLK Wed, Jan 11, 2012 23.00 24.20 22.78 24.09
1868 NYSE WLK Tue, Jan 10, 2012 21.97 23.05 21.94 23.03
1867 NYSE WLK Mon, Jan 9, 2012 21.46 21.87 21.40 21.80
1866 NYSE WLK Fri, Jan 6, 2012 21.25 21.51 21.03 21.33
1865 NYSE WLK Thu, Jan 5, 2012 20.80 21.45 20.52 21.27
1864 NYSE WLK Wed, Jan 4, 2012 20.36 21.09 20.19 21.02
1863 NYSE WLK Tue, Jan 3, 2012 20.55 20.88 20.36 20.43
1862 NYSE WLK Fri, Dec 30, 2011 20.01 20.52 20.00 20.12
1861 NYSE WLK Thu, Dec 29, 2011 19.47 20.09 19.40 20.03
1860 NYSE WLK Wed, Dec 28, 2011 20.12 20.14 19.40 19.48
1859 NYSE WLK Tue, Dec 27, 2011 19.78 20.28 19.77 20.19
1858 NYSE WLK Fri, Dec 23, 2011 19.78 20.07 19.77 19.93
1857 NYSE WLK Thu, Dec 22, 2011 19.75 19.83 19.61 19.75
1856 NYSE WLK Wed, Dec 21, 2011 19.49 19.80 19.43 19.71
1855 NYSE WLK Tue, Dec 20, 2011 19.42 19.93 19.25 19.57
1854 NYSE WLK Mon, Dec 19, 2011 19.47 19.57 18.84 18.88
1853 NYSE WLK Fri, Dec 16, 2011 19.53 19.95 19.17 19.40
1852 NYSE WLK Thu, Dec 15, 2011 19.68 19.73 19.09 19.29
1851 NYSE WLK Wed, Dec 14, 2011 19.22 19.56 19.16 19.35
1850 NYSE WLK Tue, Dec 13, 2011 19.97 20.22 19.34 19.51
1849 NYSE WLK Mon, Dec 12, 2011 20.19 20.19 19.53 19.80
1848 NYSE WLK Fri, Dec 9, 2011 20.27 20.66 19.98 20.52
1847 NYSE WLK Thu, Dec 8, 2011 20.99 20.99 20.20 20.24
1846 NYSE WLK Wed, Dec 7, 2011 21.12 21.35 20.93 21.25
1845 NYSE WLK Tue, Dec 6, 2011 21.10 21.41 20.90 21.32
1844 NYSE WLK Mon, Dec 5, 2011 21.24 21.35 20.96 21.15
1843 NYSE WLK Fri, Dec 2, 2011 20.98 21.15 20.52 20.77
1842 NYSE WLK Thu, Dec 1, 2011 21.03 21.15 20.57 20.64
1841 NYSE WLK Wed, Nov 30, 2011 20.51 21.15 20.19 21.00
1840 NYSE WLK Tue, Nov 29, 2011 20.00 20.00 19.54 19.68
1839 NYSE WLK Mon, Nov 28, 2011 19.97 20.28 19.75 19.92
1838 NYSE WLK Fri, Nov 25, 2011 18.98 19.40 18.98 19.03
1837 NYSE WLK Wed, Nov 23, 2011 19.71 19.84 19.08 19.10
1836 NYSE WLK Tue, Nov 22, 2011 20.16 20.48 19.82 19.93
1835 NYSE WLK Mon, Nov 21, 2011 20.26 20.39 19.81 20.19
1834 NYSE WLK Fri, Nov 18, 2011 21.48 21.48 20.68 20.69
1833 NYSE WLK Thu, Nov 17, 2011 21.59 21.83 21.02 21.33
1832 NYSE WLK Wed, Nov 16, 2011 21.46 21.92 21.32 21.68
1831 NYSE WLK Tue, Nov 15, 2011 21.63 22.07 21.50 21.80
1830 NYSE WLK Mon, Nov 14, 2011 21.62 22.11 21.61 21.82
1829 NYSE WLK Fri, Nov 11, 2011 21.16 22.00 21.06 21.82
1828 NYSE WLK Thu, Nov 10, 2011 20.50 20.86 20.28 20.72
1827 NYSE WLK Wed, Nov 9, 2011 19.75 20.32 19.53 20.08
1826 NYSE WLK Tue, Nov 8, 2011 19.90 20.18 19.30 20.08
1825 NYSE WLK Mon, Nov 7, 2011 19.83 19.91 19.13 19.67
1824 NYSE WLK Fri, Nov 4, 2011 19.73 20.11 19.44 19.90
1823 NYSE WLK Thu, Nov 3, 2011 19.72 20.34 19.19 20.05
1822 NYSE WLK Wed, Nov 2, 2011 19.71 19.83 19.10 19.39
1821 NYSE WLK Tue, Nov 1, 2011 19.03 20.10 17.58 19.14
1820 NYSE WLK Mon, Oct 31, 2011 21.09 21.45 20.60 20.61
1819 NYSE WLK Fri, Oct 28, 2011 21.23 21.64 21.10 21.57
1818 NYSE WLK Thu, Oct 27, 2011 20.73 21.70 20.69 21.37
1817 NYSE WLK Wed, Oct 26, 2011 19.37 19.87 18.90 19.78
1816 NYSE WLK Tue, Oct 25, 2011 19.11 19.36 18.90 18.92
1815 NYSE WLK Mon, Oct 24, 2011 18.87 19.50 18.80 19.21
1814 NYSE WLK Fri, Oct 21, 2011 18.39 18.93 18.08 18.82
1813 NYSE WLK Thu, Oct 20, 2011 18.26 18.35 17.46 17.97
1812 NYSE WLK Wed, Oct 19, 2011 19.27 19.33 18.14 18.20
1811 NYSE WLK Tue, Oct 18, 2011 19.09 19.70 18.71 19.25
1810 NYSE WLK Mon, Oct 17, 2011 19.32 19.52 18.94 19.20
1809 NYSE WLK Fri, Oct 14, 2011 18.82 19.63 18.70 19.51
1808 NYSE WLK Thu, Oct 13, 2011 18.92 19.01 18.15 18.41
1807 NYSE WLK Wed, Oct 12, 2011 19.25 19.43 18.94 19.12
1806 NYSE WLK Tue, Oct 11, 2011 18.88 19.56 18.88 19.12
1805 NYSE WLK Mon, Oct 10, 2011 18.40 19.23 18.40 19.14
1804 NYSE WLK Fri, Oct 7, 2011 18.71 18.78 17.61 17.93
1803 NYSE WLK Thu, Oct 6, 2011 17.80 18.55 17.58 18.55
1802 NYSE WLK Wed, Oct 5, 2011 17.24 17.97 17.03 17.82
1801 NYSE WLK Tue, Oct 4, 2011 15.96 17.18 15.63 17.18
1800 NYSE WLK Mon, Oct 3, 2011 16.94 17.50 16.16 16.16
1799 NYSE WLK Fri, Sep 30, 2011 17.81 17.81 17.10 17.14
1798 NYSE WLK Thu, Sep 29, 2011 18.87 18.87 17.64 18.15
1797 NYSE WLK Wed, Sep 28, 2011 19.35 19.60 18.29 18.33
1796 NYSE WLK Tue, Sep 27, 2011 19.53 19.98 19.08 19.27
1795 NYSE WLK Mon, Sep 26, 2011 18.44 18.82 17.80 18.77
1794 NYSE WLK Fri, Sep 23, 2011 18.20 18.69 18.05 18.21
1793 NYSE WLK Thu, Sep 22, 2011 18.88 19.35 17.99 18.25
1792 NYSE WLK Wed, Sep 21, 2011 20.87 20.87 19.67 19.75
1791 NYSE WLK Tue, Sep 20, 2011 21.17 21.47 20.80 20.90
1790 NYSE WLK Mon, Sep 19, 2011 20.89 21.25 20.35 21.10
1789 NYSE WLK Fri, Sep 16, 2011 21.78 21.78 21.11 21.38
1788 NYSE WLK Thu, Sep 15, 2011 21.45 21.92 21.42 21.76
1787 NYSE WLK Wed, Sep 14, 2011 21.19 21.49 20.39 21.10
1786 NYSE WLK Tue, Sep 13, 2011 19.88 21.15 19.85 20.99
1785 NYSE WLK Mon, Sep 12, 2011 19.89 20.38 19.44 19.86
1784 NYSE WLK Fri, Sep 9, 2011 21.04 21.21 20.02 20.14
1783 NYSE WLK Thu, Sep 8, 2011 21.48 22.20 21.19 21.35
1782 NYSE WLK Wed, Sep 7, 2011 21.06 21.69 21.03 21.68
1781 NYSE WLK Tue, Sep 6, 2011 19.82 20.61 19.82 20.58
1780 NYSE WLK Fri, Sep 2, 2011 21.17 21.40 20.71 20.81
1779 NYSE WLK Thu, Sep 1, 2011 22.91 23.20 21.85 21.86
1778 NYSE WLK Wed, Aug 31, 2011 22.45 23.19 22.31 22.98
1777 NYSE WLK Tue, Aug 30, 2011 22.18 22.49 21.88 22.32
1776 NYSE WLK Mon, Aug 29, 2011 21.56 22.32 21.56 22.32
1775 NYSE WLK Fri, Aug 26, 2011 20.18 21.23 19.73 21.14
1774 NYSE WLK Thu, Aug 25, 2011 20.80 20.98 20.10 20.38
1773 NYSE WLK Wed, Aug 24, 2011 20.38 20.86 19.89 20.59
1772 NYSE WLK Tue, Aug 23, 2011 19.22 20.49 19.08 20.49
1771 NYSE WLK Mon, Aug 22, 2011 19.57 19.68 19.00 19.10
1770 NYSE WLK Fri, Aug 19, 2011 19.23 19.94 18.86 18.91
1769 NYSE WLK Thu, Aug 18, 2011 20.03 20.10 19.28 19.65
1768 NYSE WLK Wed, Aug 17, 2011 21.23 21.61 20.71 20.85
1767 NYSE WLK Tue, Aug 16, 2011 21.35 21.49 20.86 20.99
1766 NYSE WLK Mon, Aug 15, 2011 21.57 21.73 21.28 21.71
1765 NYSE WLK Fri, Aug 12, 2011 20.58 21.81 20.28 21.38
1764 NYSE WLK Thu, Aug 11, 2011 19.80 20.82 19.45 20.38
1763 NYSE WLK Wed, Aug 10, 2011 19.73 20.64 19.58 19.59
1762 NYSE WLK Tue, Aug 9, 2011 19.09 20.32 18.95 20.32
1761 NYSE WLK Mon, Aug 8, 2011 19.91 20.16 17.77 18.60
1760 NYSE WLK Fri, Aug 5, 2011 22.06 22.24 20.62 21.80
1759 NYSE WLK Thu, Aug 4, 2011 23.14 23.18 21.50 21.53
1758 NYSE WLK Wed, Aug 3, 2011 23.75 23.80 22.78 23.68
1757 NYSE WLK Tue, Aug 2, 2011 25.89 26.84 23.62 23.76
1756 NYSE WLK Mon, Aug 1, 2011 26.34 26.42 25.93 26.34
1755 NYSE WLK Fri, Jul 29, 2011 24.88 25.94 24.51 25.88
1754 NYSE WLK Thu, Jul 28, 2011 25.07 25.61 24.98 25.00
1753 NYSE WLK Wed, Jul 27, 2011 25.59 25.70 24.90 25.12
1752 NYSE WLK Tue, Jul 26, 2011 26.14 26.37 25.54 25.77
1751 NYSE WLK Mon, Jul 25, 2011 26.17 26.56 26.00 26.15
1750 NYSE WLK Fri, Jul 22, 2011 26.87 26.90 26.51 26.68
1749 NYSE WLK Thu, Jul 21, 2011 26.28 27.26 26.20 27.00
1748 NYSE WLK Wed, Jul 20, 2011 25.88 26.18 25.64 26.17
1747 NYSE WLK Tue, Jul 19, 2011 25.77 26.07 25.63 25.89
1746 NYSE WLK Mon, Jul 18, 2011 25.60 25.70 25.36 25.55
1745 NYSE WLK Fri, Jul 15, 2011 25.51 25.70 25.12 25.69
1744 NYSE WLK Thu, Jul 14, 2011 25.95 26.04 25.21 25.32
1743 NYSE WLK Wed, Jul 13, 2011 25.68 26.15 25.58 25.76
1742 NYSE WLK Tue, Jul 12, 2011 25.89 25.97 25.37 25.43
1741 NYSE WLK Mon, Jul 11, 2011 26.66 26.86 26.02 26.08
1740 NYSE WLK Fri, Jul 8, 2011 26.85 27.34 26.61 27.26
1739 NYSE WLK Thu, Jul 7, 2011 27.32 27.72 27.32 27.46
1738 NYSE WLK Wed, Jul 6, 2011 26.49 27.09 26.25 27.04
1737 NYSE WLK Tue, Jul 5, 2011 26.35 26.90 26.24 26.64
1736 NYSE WLK Fri, Jul 1, 2011 26.07 26.47 26.06 26.40
1735 NYSE WLK Thu, Jun 30, 2011 26.26 26.40 25.81 25.95
1734 NYSE WLK Wed, Jun 29, 2011 25.99 26.56 25.52 26.24
1733 NYSE WLK Tue, Jun 28, 2011 26.04 26.04 25.29 25.78
1732 NYSE WLK Mon, Jun 27, 2011 25.50 26.11 25.25 25.81
1731 NYSE WLK Fri, Jun 24, 2011 26.10 26.19 25.32 25.59
1730 NYSE WLK Thu, Jun 23, 2011 25.65 26.05 24.30 26.00
1729 NYSE WLK Wed, Jun 22, 2011 25.83 26.51 25.72 26.20
1728 NYSE WLK Tue, Jun 21, 2011 24.83 26.16 24.83 25.98
1727 NYSE WLK Mon, Jun 20, 2011 24.30 24.71 23.94 24.58
1726 NYSE WLK Fri, Jun 17, 2011 24.68 25.22 24.35 24.38
1725 NYSE WLK Thu, Jun 16, 2011 25.39 25.56 24.02 24.43
1724 NYSE WLK Wed, Jun 15, 2011 25.95 26.25 25.28 25.36
1723 NYSE WLK Tue, Jun 14, 2011 25.68 26.86 25.68 26.41
1722 NYSE WLK Mon, Jun 13, 2011 25.76 25.89 25.19 25.26
1721 NYSE WLK Fri, Jun 10, 2011 25.80 26.00 25.53 25.66
1720 NYSE WLK Thu, Jun 9, 2011 25.79 26.35 25.64 26.02
1719 NYSE WLK Wed, Jun 8, 2011 26.56 26.56 25.65 25.71
1718 NYSE WLK Tue, Jun 7, 2011 26.79 27.10 26.29 26.67
1717 NYSE WLK Mon, Jun 6, 2011 26.57 27.05 26.40 26.58
1716 NYSE WLK Fri, Jun 3, 2011 27.15 27.15 26.49 26.54
1715 NYSE WLK Thu, Jun 2, 2011 27.31 27.90 26.92 27.73
1714 NYSE WLK Wed, Jun 1, 2011 28.07 28.18 27.31 27.36
1713 NYSE WLK Tue, May 31, 2011 28.46 28.77 27.83 28.05
1712 NYSE WLK Fri, May 27, 2011 28.17 28.60 27.70 27.88
1711 NYSE WLK Thu, May 26, 2011 27.38 28.58 27.16 28.04
1710 NYSE WLK Wed, May 25, 2011 25.51 27.71 25.50 27.50
1709 NYSE WLK Tue, May 24, 2011 26.05 26.45 25.46 25.60
1708 NYSE WLK Mon, May 23, 2011 26.23 26.23 25.61 25.87
1707 NYSE WLK Fri, May 20, 2011 27.77 27.66 26.85 26.90
1706 NYSE WLK Thu, May 19, 2011 27.91 28.20 27.50 27.73
1705 NYSE WLK Wed, May 18, 2011 26.91 27.62 26.78 27.55
1704 NYSE WLK Tue, May 17, 2011 27.01 27.07 26.24 26.79
1703 NYSE WLK Mon, May 16, 2011 28.83 28.99 27.17 27.19
1702 NYSE WLK Fri, May 13, 2011 28.88 29.65 28.71 29.01
1701 NYSE WLK Thu, May 12, 2011 28.99 29.22 28.21 28.55
1700 NYSE WLK Wed, May 11, 2011 30.31 30.31 28.61 29.10
1699 NYSE WLK Tue, May 10, 2011 30.09 30.64 30.00 30.36
1698 NYSE WLK Mon, May 9, 2011 30.03 30.28 29.57 29.92
1697 NYSE WLK Fri, May 6, 2011 29.67 30.59 29.52 29.83
1696 NYSE WLK Thu, May 5, 2011 29.36 29.97 28.70 29.22
1695 NYSE WLK Wed, May 4, 2011 29.78 30.17 29.29 29.46
1694 NYSE WLK Tue, May 3, 2011 32.92 32.92 29.43 29.77
1693 NYSE WLK Mon, May 2, 2011 33.09 33.89 32.84 32.99
1692 NYSE WLK Fri, Apr 29, 2011 32.70 33.19 32.62 32.83
1691 NYSE WLK Thu, Apr 28, 2011 32.93 32.95 32.03 32.54
1690 NYSE WLK Wed, Apr 27, 2011 33.26 33.45 32.53 32.89
1689 NYSE WLK Tue, Apr 26, 2011 32.67 33.75 32.67 33.09
1688 NYSE WLK Mon, Apr 25, 2011 32.24 32.63 32.00 32.43
1687 NYSE WLK Thu, Apr 21, 2011 31.62 32.36 31.44 32.23
1686 NYSE WLK Wed, Apr 20, 2011 30.53 31.47 30.24 31.37
1685 NYSE WLK Tue, Apr 19, 2011 30.01 30.02 29.76 30.01
1684 NYSE WLK Mon, Apr 18, 2011 29.86 30.10 29.33 29.91
1683 NYSE WLK Fri, Apr 15, 2011 29.65 30.46 29.65 30.33
1682 NYSE WLK Thu, Apr 14, 2011 29.35 29.70 29.04 29.66
1681 NYSE WLK Wed, Apr 13, 2011 29.15 29.59 28.52 29.55
1680 NYSE WLK Tue, Apr 12, 2011 28.71 29.25 28.46 28.78
1679 NYSE WLK Mon, Apr 11, 2011 30.13 30.22 28.73 28.98
1678 NYSE WLK Fri, Apr 8, 2011 29.79 30.04 29.63 30.02
1677 NYSE WLK Thu, Apr 7, 2011 28.83 29.63 28.79 29.56
1676 NYSE WLK Wed, Apr 6, 2011 28.72 28.84 28.07 28.80
1675 NYSE WLK Tue, Apr 5, 2011 28.25 28.50 27.83 28.45
1674 NYSE WLK Mon, Apr 4, 2011 28.36 28.65 28.28 28.53
1673 NYSE WLK Fri, Apr 1, 2011 28.44 28.68 28.13 28.27
1672 NYSE WLK Thu, Mar 31, 2011 27.92 28.24 27.77 28.10
1671 NYSE WLK Wed, Mar 30, 2011 27.74 28.14 27.55 27.90
1670 NYSE WLK Tue, Mar 29, 2011 27.05 27.73 27.05 27.54
1669 NYSE WLK Mon, Mar 28, 2011 27.41 27.97 27.01 27.03
1668 NYSE WLK Fri, Mar 25, 2011 26.69 27.46 26.65 27.39
1667 NYSE WLK Thu, Mar 24, 2011 26.60 26.73 26.42 26.58
1666 NYSE WLK Wed, Mar 23, 2011 25.93 26.65 25.75 26.49
1665 NYSE WLK Tue, Mar 22, 2011 26.24 26.28 25.89 26.03
1664 NYSE WLK Mon, Mar 21, 2011 25.36 26.15 25.09 26.15
1663 NYSE WLK Fri, Mar 18, 2011 25.35 25.76 24.81 24.90
1662 NYSE WLK Thu, Mar 17, 2011 25.10 25.22 24.58 25.02
1661 NYSE WLK Wed, Mar 16, 2011 25.08 25.15 24.23 24.63
1660 NYSE WLK Tue, Mar 15, 2011 24.47 25.24 23.89 24.99
1659 NYSE WLK Mon, Mar 14, 2011 24.76 25.32 24.58 25.03
1658 NYSE WLK Fri, Mar 11, 2011 23.62 24.33 23.41 24.27
1657 NYSE WLK Thu, Mar 10, 2011 24.50 24.62 23.65 23.79
1656 NYSE WLK Wed, Mar 9, 2011 25.11 25.16 24.70 24.72
1655 NYSE WLK Tue, Mar 8, 2011 24.51 25.24 24.25 25.08
1654 NYSE WLK Mon, Mar 7, 2011 24.84 25.13 24.23 24.50
1653 NYSE WLK Fri, Mar 4, 2011 24.53 24.89 24.33 24.69
1652 NYSE WLK Thu, Mar 3, 2011 24.12 24.85 24.11 24.46
1651 NYSE WLK Wed, Mar 2, 2011 23.40 24.18 23.27 24.00
1650 NYSE WLK Tue, Mar 1, 2011 23.95 24.24 23.26 23.37
1649 NYSE WLK Mon, Feb 28, 2011 23.89 24.20 23.61 23.91
1648 NYSE WLK Fri, Feb 25, 2011 23.01 23.48 22.98 23.40
1647 NYSE WLK Thu, Feb 24, 2011 23.32 23.72 22.30 22.85
1646 NYSE WLK Wed, Feb 23, 2011 24.07 24.49 23.25 23.56
1645 NYSE WLK Tue, Feb 22, 2011 22.77 24.96 22.77 24.15
1644 NYSE WLK Fri, Feb 18, 2011 23.03 23.20 22.64 22.98
1643 NYSE WLK Thu, Feb 17, 2011 21.77 23.06 21.63 23.03
1642 NYSE WLK Wed, Feb 16, 2011 22.00 22.25 21.97 22.20
1641 NYSE WLK Tue, Feb 15, 2011 21.92 21.98 21.73 21.82
1640 NYSE WLK Mon, Feb 14, 2011 21.81 22.00 21.62 22.00
1639 NYSE WLK Fri, Feb 11, 2011 21.66 21.91 21.58 21.87
1638 NYSE WLK Thu, Feb 10, 2011 21.03 21.73 21.00 21.66
1637 NYSE WLK Wed, Feb 9, 2011 21.65 21.65 21.03 21.25
1636 NYSE WLK Tue, Feb 8, 2011 21.90 21.90 21.40 21.68
1635 NYSE WLK Mon, Feb 7, 2011 21.06 22.06 21.02 21.87
1634 NYSE WLK Fri, Feb 4, 2011 20.07 21.06 20.07 21.01
1633 NYSE WLK Thu, Feb 3, 2011 19.93 20.24 19.85 20.03
1632 NYSE WLK Wed, Feb 2, 2011 20.34 20.34 19.91 19.96
1631 NYSE WLK Tue, Feb 1, 2011 19.52 20.48 19.42 20.43
1630 NYSE WLK Mon, Jan 31, 2011 19.37 19.69 19.28 19.36
1629 NYSE WLK Fri, Jan 28, 2011 20.08 20.13 19.26 19.28
1628 NYSE WLK Thu, Jan 27, 2011 20.04 20.34 19.89 20.10
1627 NYSE WLK Wed, Jan 26, 2011 19.96 20.25 19.73 20.01
1626 NYSE WLK Tue, Jan 25, 2011 19.66 19.92 19.10 19.87
1625 NYSE WLK Mon, Jan 24, 2011 20.25 20.38 20.03 20.10
1624 NYSE WLK Fri, Jan 21, 2011 20.56 20.60 20.23 20.29
1623 NYSE WLK Thu, Jan 20, 2011 21.14 21.19 20.43 20.44
1622 NYSE WLK Wed, Jan 19, 2011 21.62 21.79 21.25 21.30
1621 NYSE WLK Tue, Jan 18, 2011 21.59 21.84 21.44 21.80
1620 NYSE WLK Fri, Jan 14, 2011 21.65 21.70 21.44 21.65
1619 NYSE WLK Thu, Jan 13, 2011 21.57 21.93 21.54 21.65
1618 NYSE WLK Wed, Jan 12, 2011 21.70 21.70 21.39 21.61
1617 NYSE WLK Tue, Jan 11, 2011 21.50 21.57 21.24 21.40
1616 NYSE WLK Mon, Jan 10, 2011 21.17 21.66 21.02 21.47
1615 NYSE WLK Fri, Jan 7, 2011 21.42 21.47 20.80 21.25
1614 NYSE WLK Thu, Jan 6, 2011 21.48 21.48 21.17 21.35
1613 NYSE WLK Wed, Jan 5, 2011 21.90 21.90 21.47 21.54
1612 NYSE WLK Tue, Jan 4, 2011 22.08 22.08 21.41 21.97
1611 NYSE WLK Mon, Jan 3, 2011 21.96 22.06 21.72 21.92
1610 NYSE WLK Fri, Dec 31, 2010 21.75 21.97 21.67 21.74
1609 NYSE WLK Thu, Dec 30, 2010 21.79 21.88 21.71 21.75
1608 NYSE WLK Wed, Dec 29, 2010 21.78 21.88 21.75 21.80
1607 NYSE WLK Tue, Dec 28, 2010 21.71 21.81 21.63 21.69
1606 NYSE WLK Mon, Dec 27, 2010 21.71 21.77 21.51 21.68
1605 NYSE WLK Thu, Dec 23, 2010 21.80 21.89 21.66 21.76
1604 NYSE WLK Wed, Dec 22, 2010 21.68 21.83 21.60 21.78
1603 NYSE WLK Tue, Dec 21, 2010 21.47 21.67 21.47 21.65
1602 NYSE WLK Mon, Dec 20, 2010 21.24 21.42 21.19 21.33
1601 NYSE WLK Fri, Dec 17, 2010 21.21 21.35 21.01 21.24
1600 NYSE WLK Thu, Dec 16, 2010 20.48 21.25 20.41 21.24
1599 NYSE WLK Wed, Dec 15, 2010 20.46 20.70 20.32 20.41
1598 NYSE WLK Tue, Dec 14, 2010 20.37 20.70 20.35 20.47
1597 NYSE WLK Mon, Dec 13, 2010 20.37 20.53 20.23 20.26
1596 NYSE WLK Fri, Dec 10, 2010 20.29 20.60 20.07 20.31
1595 NYSE WLK Thu, Dec 9, 2010 20.31 20.37 20.03 20.20
1594 NYSE WLK Wed, Dec 8, 2010 20.15 20.40 20.07 20.12
1593 NYSE WLK Tue, Dec 7, 2010 20.22 20.25 20.02 20.13
1592 NYSE WLK Mon, Dec 6, 2010 19.32 20.05 19.26 19.94
1591 NYSE WLK Fri, Dec 3, 2010 19.24 19.37 19.06 19.32
1590 NYSE WLK Thu, Dec 2, 2010 19.29 19.41 19.13 19.36
1589 NYSE WLK Wed, Dec 1, 2010 19.27 19.34 19.04 19.24
1588 NYSE WLK Tue, Nov 30, 2010 18.60 19.01 18.56 18.88
1587 NYSE WLK Mon, Nov 29, 2010 18.87 18.97 18.42 18.88
1586 NYSE WLK Fri, Nov 26, 2010 19.00 19.27 18.86 19.06
1585 NYSE WLK Wed, Nov 24, 2010 18.57 19.18 18.57 19.15
1584 NYSE WLK Tue, Nov 23, 2010 18.98 18.98 18.34 18.48
1583 NYSE WLK Mon, Nov 22, 2010 19.19 19.34 18.73 19.23
1582 NYSE WLK Fri, Nov 19, 2010 18.60 19.31 18.35 19.25
1581 NYSE WLK Thu, Nov 18, 2010 18.18 18.83 18.08 18.61
1580 NYSE WLK Wed, Nov 17, 2010 17.52 18.12 17.41 17.93
1579 NYSE WLK Tue, Nov 16, 2010 18.10 18.32 17.34 17.55
1578 NYSE WLK Mon, Nov 15, 2010 18.42 18.65 18.13 18.27
1577 NYSE WLK Fri, Nov 12, 2010 18.37 18.51 18.18 18.29
1576 NYSE WLK Thu, Nov 11, 2010 18.55 18.75 18.47 18.55
1575 NYSE WLK Wed, Nov 10, 2010 18.47 18.91 18.13 18.78
1574 NYSE WLK Tue, Nov 9, 2010 18.93 19.00 18.30 18.47
1573 NYSE WLK Mon, Nov 8, 2010 18.18 19.15 18.08 18.91
1572 NYSE WLK Fri, Nov 5, 2010 18.08 18.16 17.95 18.09
1571 NYSE WLK Thu, Nov 4, 2010 17.40 18.31 17.36 18.04
1570 NYSE WLK Wed, Nov 3, 2010 16.35 17.58 16.35 16.89
1569 NYSE WLK Tue, Nov 2, 2010 16.22 16.43 16.04 16.41
1568 NYSE WLK Mon, Nov 1, 2010 16.07 16.37 15.79 16.00
1567 NYSE WLK Fri, Oct 29, 2010 15.91 16.10 15.84 15.98
1566 NYSE WLK Thu, Oct 28, 2010 16.17 16.26 15.89 15.99
1565 NYSE WLK Wed, Oct 27, 2010 15.99 16.12 15.69 16.06
1564 NYSE WLK Tue, Oct 26, 2010 15.98 16.21 15.84 16.15
1563 NYSE WLK Mon, Oct 25, 2010 15.97 16.25 15.87 16.14
1562 NYSE WLK Fri, Oct 22, 2010 16.23 16.24 15.80 15.86
1561 NYSE WLK Thu, Oct 21, 2010 16.20 16.32 15.79 16.12
1560 NYSE WLK Wed, Oct 20, 2010 16.26 16.32 16.09 16.15
1559 NYSE WLK Tue, Oct 19, 2010 15.78 16.20 15.67 16.09
1558 NYSE WLK Mon, Oct 18, 2010 15.99 16.19 15.95 16.07
1557 NYSE WLK Fri, Oct 15, 2010 16.07 16.14 15.70 15.91
1556 NYSE WLK Thu, Oct 14, 2010 16.24 16.25 15.77 15.88
1555 NYSE WLK Wed, Oct 13, 2010 15.91 16.30 15.81 16.22
1554 NYSE WLK Tue, Oct 12, 2010 16.18 16.18 15.67 15.81
1553 NYSE WLK Mon, Oct 11, 2010 15.91 16.49 15.91 16.19
1552 NYSE WLK Fri, Oct 8, 2010 15.39 16.02 15.39 15.88
1551 NYSE WLK Thu, Oct 7, 2010 14.96 15.33 14.70 15.31
1550 NYSE WLK Wed, Oct 6, 2010 15.74 15.74 14.62 14.76
1549 NYSE WLK Tue, Oct 5, 2010 15.46 15.93 15.32 15.84
1548 NYSE WLK Mon, Oct 4, 2010 15.45 15.93 15.05 15.23
1547 NYSE WLK Fri, Oct 1, 2010 15.18 15.48 14.96 15.46
1546 NYSE WLK Thu, Sep 30, 2010 15.17 15.37 14.72 14.97
1545 NYSE WLK Wed, Sep 29, 2010 15.06 15.10 14.95 15.07
1544 NYSE WLK Tue, Sep 28, 2010 14.96 15.11 14.55 15.01
1543 NYSE WLK Mon, Sep 27, 2010 15.06 15.08 14.83 14.87
1542 NYSE WLK Fri, Sep 24, 2010 14.56 15.07 14.56 15.01
1541 NYSE WLK Thu, Sep 23, 2010 14.55 14.91 14.24 14.30
1540 NYSE WLK Wed, Sep 22, 2010 14.88 15.03 14.63 14.72
1539 NYSE WLK Tue, Sep 21, 2010 14.97 15.07 14.77 14.90
1538 NYSE WLK Mon, Sep 20, 2010 14.75 15.20 14.63 15.05
1537 NYSE WLK Fri, Sep 17, 2010 14.60 14.86 14.40 14.74
1536 NYSE WLK Thu, Sep 16, 2010 14.25 14.66 14.25 14.47
1535 NYSE WLK Wed, Sep 15, 2010 14.10 14.27 13.83 14.22
1534 NYSE WLK Tue, Sep 14, 2010 14.31 14.45 14.14 14.15
1533 NYSE WLK Mon, Sep 13, 2010 13.77 14.45 13.67 14.33
1532 NYSE WLK Fri, Sep 10, 2010 13.43 13.75 13.43 13.59
1531 NYSE WLK Thu, Sep 9, 2010 13.83 13.86 13.38 13.42
1530 NYSE WLK Wed, Sep 8, 2010 13.32 13.77 13.32 13.59
1529 NYSE WLK Tue, Sep 7, 2010 13.62 13.64 13.29 13.30
1528 NYSE WLK Fri, Sep 3, 2010 13.87 13.97 13.63 13.68
1527 NYSE WLK Thu, Sep 2, 2010 13.66 13.92 13.41 13.63
1526 NYSE WLK Wed, Sep 1, 2010 13.18 13.87 13.15 13.81
1525 NYSE WLK Tue, Aug 31, 2010 12.72 13.14 12.60 12.96
1524 NYSE WLK Mon, Aug 30, 2010 13.19 13.20 12.75 12.76
1523 NYSE WLK Fri, Aug 27, 2010 12.93 13.36 12.73 13.30
1522 NYSE WLK Thu, Aug 26, 2010 12.73 13.11 12.67 12.69
1521 NYSE WLK Wed, Aug 25, 2010 12.41 12.81 12.34 12.69
1520 NYSE WLK Tue, Aug 24, 2010 12.69 12.69 12.45 12.48
1519 NYSE WLK Mon, Aug 23, 2010 13.17 13.30 12.87 12.87
1518 NYSE WLK Fri, Aug 20, 2010 13.01 13.08 12.70 13.03
1517 NYSE WLK Thu, Aug 19, 2010 13.71 13.74 13.02 13.18
1516 NYSE WLK Wed, Aug 18, 2010 13.87 13.99 13.40 13.74
1515 NYSE WLK Tue, Aug 17, 2010 14.31 14.31 13.86 13.98
1514 NYSE WLK Mon, Aug 16, 2010 13.82 14.39 13.74 14.19
1513 NYSE WLK Fri, Aug 13, 2010 13.79 13.96 13.59 13.86
1512 NYSE WLK Thu, Aug 12, 2010 13.39 13.96 13.37 13.80
1511 NYSE WLK Wed, Aug 11, 2010 13.60 13.78 13.34 13.67
1510 NYSE WLK Tue, Aug 10, 2010 14.18 14.27 13.84 13.97
1509 NYSE WLK Mon, Aug 9, 2010 14.09 14.53 13.87 14.34
1508 NYSE WLK Fri, Aug 6, 2010 13.85 14.17 13.66 13.95
1507 NYSE WLK Thu, Aug 5, 2010 13.99 14.46 13.84 14.10
1506 NYSE WLK Wed, Aug 4, 2010 12.85 14.34 12.85 14.18
1505 NYSE WLK Tue, Aug 3, 2010 13.36 13.44 12.42 12.69
1504 NYSE WLK Mon, Aug 2, 2010 12.75 13.28 12.68 13.23
1503 NYSE WLK Fri, Jul 30, 2010 12.15 12.65 12.08 12.37
1502 NYSE WLK Thu, Jul 29, 2010 12.35 12.75 12.22 12.40
1501 NYSE WLK Wed, Jul 28, 2010 12.39 12.55 12.24 12.31
1500 NYSE WLK Tue, Jul 27, 2010 12.50 12.61 12.37 12.46
1499 NYSE WLK Mon, Jul 26, 2010 12.24 12.42 12.11 12.37
1498 NYSE WLK Fri, Jul 23, 2010 11.79 12.35 11.76 12.26
1497 NYSE WLK Thu, Jul 22, 2010 11.79 11.94 11.66 11.82
1496 NYSE WLK Wed, Jul 21, 2010 11.51 11.82 11.31 11.57
1495 NYSE WLK Tue, Jul 20, 2010 10.98 11.37 10.87 11.34
1494 NYSE WLK Mon, Jul 19, 2010 11.37 11.37 10.98 11.17
1493 NYSE WLK Fri, Jul 16, 2010 11.64 11.64 11.10 11.32
1492 NYSE WLK Thu, Jul 15, 2010 11.75 11.95 11.37 11.77
1491 NYSE WLK Wed, Jul 14, 2010 11.68 11.81 11.35 11.72
1490 NYSE WLK Tue, Jul 13, 2010 11.34 12.00 11.29 11.86
1489 NYSE WLK Mon, Jul 12, 2010 11.25 11.41 11.00 11.16
1488 NYSE WLK Fri, Jul 9, 2010 10.76 11.28 10.61 11.27
1487 NYSE WLK Thu, Jul 8, 2010 9.31 10.90 9.31 10.76
1486 NYSE WLK Wed, Jul 7, 2010 8.85 9.13 8.67 9.13
1485 NYSE WLK Tue, Jul 6, 2010 9.37 9.37 8.71 8.78
1484 NYSE WLK Fri, Jul 2, 2010 9.09 9.16 8.94 9.06
1483 NYSE WLK Thu, Jul 1, 2010 9.22 9.35 8.89 9.04
1482 NYSE WLK Wed, Jun 30, 2010 9.54 9.67 9.22 9.29
1481 NYSE WLK Tue, Jun 29, 2010 9.59 9.60 9.30 9.53
1480 NYSE WLK Mon, Jun 28, 2010 9.76 9.95 9.55 9.79
1479 NYSE WLK Fri, Jun 25, 2010 9.37 9.76 9.20 9.75
1478 NYSE WLK Thu, Jun 24, 2010 9.62 9.67 9.27 9.28
1477 NYSE WLK Wed, Jun 23, 2010 9.72 9.86 9.65 9.73
1476 NYSE WLK Tue, Jun 22, 2010 9.93 10.14 9.75 9.79
1475 NYSE WLK Mon, Jun 21, 2010 10.38 10.56 9.83 9.92
1474 NYSE WLK Fri, Jun 18, 2010 9.81 10.24 9.75 10.20
1473 NYSE WLK Thu, Jun 17, 2010 9.93 9.97 9.68 9.74
1472 NYSE WLK Wed, Jun 16, 2010 10.09 10.15 9.81 9.85
1471 NYSE WLK Tue, Jun 15, 2010 9.82 10.22 9.75 10.17
1470 NYSE WLK Mon, Jun 14, 2010 9.77 10.00 9.64 9.68
1469 NYSE WLK Fri, Jun 11, 2010 9.43 9.61 9.39 9.61
1468 NYSE WLK Thu, Jun 10, 2010 9.57 9.61 9.44 9.56
1467 NYSE WLK Wed, Jun 9, 2010 9.58 9.82 9.33 9.42
1466 NYSE WLK Tue, Jun 8, 2010 9.36 9.58 9.18 9.52
1465 NYSE WLK Mon, Jun 7, 2010 9.63 9.88 9.31 9.34
1464 NYSE WLK Fri, Jun 4, 2010 10.00 10.00 9.50 9.54
1463 NYSE WLK Thu, Jun 3, 2010 10.34 10.42 10.00 10.19
1462 NYSE WLK Wed, Jun 2, 2010 10.07 10.27 9.72 10.27
1461 NYSE WLK Tue, Jun 1, 2010 10.38 10.51 10.02 10.03
1460 NYSE WLK Fri, May 28, 2010 10.85 10.92 10.50 10.61
1459 NYSE WLK Thu, May 27, 2010 10.63 10.91 10.45 10.91
1458 NYSE WLK Wed, May 26, 2010 10.47 10.74 10.25 10.35
1457 NYSE WLK Tue, May 25, 2010 10.04 10.39 9.84 10.35
1456 NYSE WLK Mon, May 24, 2010 10.34 10.54 10.17 10.28
1455 NYSE WLK Fri, May 21, 2010 10.02 10.46 9.82 10.32
1454 NYSE WLK Thu, May 20, 2010 10.53 10.68 10.20 10.26
1453 NYSE WLK Wed, May 19, 2010 11.00 11.00 10.70 10.89
1452 NYSE WLK Tue, May 18, 2010 11.54 11.66 11.01 11.03
1451 NYSE WLK Mon, May 17, 2010 11.55 11.82 11.01 11.36
1450 NYSE WLK Fri, May 14, 2010 11.58 11.58 11.26 11.44
1449 NYSE WLK Thu, May 13, 2010 11.88 12.07 11.68 11.76
1448 NYSE WLK Wed, May 12, 2010 11.71 12.05 11.71 11.91
1447 NYSE WLK Tue, May 11, 2010 11.77 12.14 11.68 11.70
1446 NYSE WLK Mon, May 10, 2010 11.95 11.98 11.56 11.94
1445 NYSE WLK Fri, May 7, 2010 11.23 11.45 10.91 11.15
1444 NYSE WLK Thu, May 6, 2010 11.80 12.49 10.69 11.27
1443 NYSE WLK Wed, May 5, 2010 12.00 12.01 11.28 11.81
1442 NYSE WLK Tue, May 4, 2010 13.30 13.30 11.93 12.07
1441 NYSE WLK Mon, May 3, 2010 14.07 14.59 14.00 14.55
1440 NYSE WLK Fri, Apr 30, 2010 14.74 14.74 14.02 14.04
1439 NYSE WLK Thu, Apr 29, 2010 14.66 14.78 14.50 14.70
1438 NYSE WLK Wed, Apr 28, 2010 14.45 14.71 14.44 14.59
1437 NYSE WLK Tue, Apr 27, 2010 14.69 14.96 14.22 14.28
1436 NYSE WLK Mon, Apr 26, 2010 14.91 15.05 14.76 14.81
1435 NYSE WLK Fri, Apr 23, 2010 14.30 14.94 14.22 14.89
1434 NYSE WLK Thu, Apr 22, 2010 14.06 14.29 14.02 14.28
1433 NYSE WLK Wed, Apr 21, 2010 14.09 14.26 13.94 14.25
1432 NYSE WLK Tue, Apr 20, 2010 13.85 14.17 13.85 14.12
1431 NYSE WLK Mon, Apr 19, 2010 13.82 13.93 13.44 13.82
1430 NYSE WLK Fri, Apr 16, 2010 13.97 14.07 13.62 13.90
1429 NYSE WLK Thu, Apr 15, 2010 13.95 14.22 13.91 13.98
1428 NYSE WLK Wed, Apr 14, 2010 14.11 14.17 13.91 14.01
1427 NYSE WLK Tue, Apr 13, 2010 14.00 14.09 13.87 14.06
1426 NYSE WLK Mon, Apr 12, 2010 14.00 14.03 13.91 14.00
1425 NYSE WLK Fri, Apr 9, 2010 13.66 14.04 13.63 13.93
1424 NYSE WLK Thu, Apr 8, 2010 13.76 13.81 13.52 13.68
1423 NYSE WLK Wed, Apr 7, 2010 13.78 13.97 13.73 13.88
1422 NYSE WLK Tue, Apr 6, 2010 13.76 13.94 13.72 13.87
1421 NYSE WLK Mon, Apr 5, 2010 13.27 14.05 13.19 13.80
1420 NYSE WLK Thu, Apr 1, 2010 13.01 13.26 12.95 13.26
1419 NYSE WLK Wed, Mar 31, 2010 12.76 12.99 12.76 12.90
1418 NYSE WLK Tue, Mar 30, 2010 12.27 13.05 12.10 12.87
1417 NYSE WLK Mon, Mar 29, 2010 11.56 11.68 11.53 11.64
1416 NYSE WLK Fri, Mar 26, 2010 11.44 11.52 11.39 11.49
1415 NYSE WLK Thu, Mar 25, 2010 11.81 11.81 11.41 11.43
1414 NYSE WLK Wed, Mar 24, 2010 11.77 11.90 11.73 11.75
1413 NYSE WLK Tue, Mar 23, 2010 11.90 11.91 11.74 11.87
1412 NYSE WLK Mon, Mar 22, 2010 11.57 11.99 11.48 11.91
1411 NYSE WLK Fri, Mar 19, 2010 12.44 12.44 11.63 11.68
1410 NYSE WLK Thu, Mar 18, 2010 12.21 12.39 12.21 12.36
1409 NYSE WLK Wed, Mar 17, 2010 11.78 12.38 11.78 12.19
1408 NYSE WLK Tue, Mar 16, 2010 11.49 11.73 11.43 11.73
1407 NYSE WLK Mon, Mar 15, 2010 11.32 11.44 11.26 11.42
1406 NYSE WLK Fri, Mar 12, 2010 11.33 11.40 11.22 11.38
1405 NYSE WLK Thu, Mar 11, 2010 11.25 11.29 11.08 11.26
1404 NYSE WLK Wed, Mar 10, 2010 11.26 11.49 11.21 11.34
1403 NYSE WLK Tue, Mar 9, 2010 11.16 11.34 11.05 11.29
1402 NYSE WLK Mon, Mar 8, 2010 11.34 11.43 11.15 11.16
1401 NYSE WLK Fri, Mar 5, 2010 11.57 11.70 11.34 11.38
1400 NYSE WLK Thu, Mar 4, 2010 11.64 11.71 11.45 11.52
1399 NYSE WLK Wed, Mar 3, 2010 11.48 11.78 11.32 11.67
1398 NYSE WLK Tue, Mar 2, 2010 11.21 11.62 11.19 11.43
1397 NYSE WLK Mon, Mar 1, 2010 10.32 11.20 10.32 11.20
1396 NYSE WLK Fri, Feb 26, 2010 10.30 10.42 10.11 10.13
1395 NYSE WLK Thu, Feb 25, 2010 10.02 10.33 10.01 10.32
1394 NYSE WLK Wed, Feb 24, 2010 10.20 10.37 10.01 10.21
1393 NYSE WLK Tue, Feb 23, 2010 10.53 10.53 10.13 10.26
1392 NYSE WLK Mon, Feb 22, 2010 10.40 10.59 10.36 10.58
1391 NYSE WLK Fri, Feb 19, 2010 10.23 10.45 10.17 10.40
1390 NYSE WLK Thu, Feb 18, 2010 10.02 10.23 9.97 10.23
1389 NYSE WLK Wed, Feb 17, 2010 10.03 10.09 9.90 10.06
1388 NYSE WLK Tue, Feb 16, 2010 9.99 10.05 9.84 9.97
1387 NYSE WLK Fri, Feb 12, 2010 9.75 9.90 9.68 9.88
1386 NYSE WLK Thu, Feb 11, 2010 9.80 9.95 9.60 9.85
1385 NYSE WLK Wed, Feb 10, 2010 9.96 10.02 9.78 9.86
1384 NYSE WLK Tue, Feb 9, 2010 9.98 10.10 9.90 10.03
1383 NYSE WLK Mon, Feb 8, 2010 10.21 10.22 9.83 9.83
1382 NYSE WLK Fri, Feb 5, 2010 10.28 10.40 9.95 10.25
1381 NYSE WLK Thu, Feb 4, 2010 10.56 10.56 10.23 10.25
1380 NYSE WLK Wed, Feb 3, 2010 10.78 11.05 10.55 10.63
1379 NYSE WLK Tue, Feb 2, 2010 10.74 10.84 10.54 10.81
1378 NYSE WLK Mon, Feb 1, 2010 10.30 10.81 10.09 10.76
1377 NYSE WLK Fri, Jan 29, 2010 10.50 10.73 10.26 10.27
1376 NYSE WLK Thu, Jan 28, 2010 10.78 10.78 10.22 10.46
1375 NYSE WLK Wed, Jan 27, 2010 10.66 10.82 10.51 10.73
1374 NYSE WLK Tue, Jan 26, 2010 10.72 10.86 10.57 10.71
1373 NYSE WLK Mon, Jan 25, 2010 10.95 10.95 10.73 10.82
1372 NYSE WLK Fri, Jan 22, 2010 11.16 11.20 10.79 10.83
1371 NYSE WLK Thu, Jan 21, 2010 11.69 11.86 11.13 11.14
1370 NYSE WLK Wed, Jan 20, 2010 12.15 12.20 11.79 11.91
1369 NYSE WLK Tue, Jan 19, 2010 12.21 12.31 12.14 12.24
1368 NYSE WLK Fri, Jan 15, 2010 12.31 12.33 12.01 12.22
1367 NYSE WLK Thu, Jan 14, 2010 12.49 12.55 12.24 12.25
1366 NYSE WLK Wed, Jan 13, 2010 12.38 12.60 12.23 12.57
1365 NYSE WLK Tue, Jan 12, 2010 12.36 12.48 12.22 12.29
1364 NYSE WLK Mon, Jan 11, 2010 12.59 12.59 12.16 12.50
1363 NYSE WLK Fri, Jan 8, 2010 12.56 12.57 12.43 12.52
1362 NYSE WLK Thu, Jan 7, 2010 12.62 12.68 12.45 12.59
1361 NYSE WLK Wed, Jan 6, 2010 12.65 12.75 12.51 12.63
1360 NYSE WLK Tue, Jan 5, 2010 12.67 12.82 12.53 12.63
1359 NYSE WLK Mon, Jan 4, 2010 12.59 12.76 12.59 12.73
1358 NYSE WLK Thu, Dec 31, 2009 12.50 12.74 12.46 12.47
1357 NYSE WLK Wed, Dec 30, 2009 12.51 12.57 12.47 12.52
1356 NYSE WLK Tue, Dec 29, 2009 12.68 12.68 12.49 12.53
1355 NYSE WLK Mon, Dec 28, 2009 12.81 12.82 12.51 12.68
1354 NYSE WLK Thu, Dec 24, 2009 12.75 12.78 12.71 12.74
1353 NYSE WLK Wed, Dec 23, 2009 12.78 12.94 12.74 12.75
1352 NYSE WLK Tue, Dec 22, 2009 12.14 12.71 12.14 12.70
1351 NYSE WLK Mon, Dec 21, 2009 12.65 12.75 12.10 12.15
1350 NYSE WLK Fri, Dec 18, 2009 12.90 12.91 12.53 12.55
1349 NYSE WLK Thu, Dec 17, 2009 13.12 13.14 12.63 12.78
1348 NYSE WLK Wed, Dec 16, 2009 13.04 13.25 12.99 13.16
1347 NYSE WLK Tue, Dec 15, 2009 13.06 13.15 12.88 12.93
1346 NYSE WLK Mon, Dec 14, 2009 12.88 13.09 12.65 13.05
1345 NYSE WLK Fri, Dec 11, 2009 12.89 13.01 12.61 12.81
1344 NYSE WLK Thu, Dec 10, 2009 13.12 13.22 12.71 12.86
1343 NYSE WLK Wed, Dec 9, 2009 12.80 13.14 12.53 13.11
1342 NYSE WLK Tue, Dec 8, 2009 12.98 13.04 12.63 12.77
1341 NYSE WLK Mon, Dec 7, 2009 13.01 13.13 12.84 13.03
1340 NYSE WLK Fri, Dec 4, 2009 13.04 13.12 12.67 13.01
1339 NYSE WLK Thu, Dec 3, 2009 13.26 13.37 12.83 12.84
1338 NYSE WLK Wed, Dec 2, 2009 12.88 13.30 12.88 13.26
1337 NYSE WLK Tue, Dec 1, 2009 13.19 13.26 12.72 12.91
1336 NYSE WLK Mon, Nov 30, 2009 13.13 13.13 12.74 13.08
1335 NYSE WLK Fri, Nov 27, 2009 13.17 13.28 13.03 13.13
1334 NYSE WLK Wed, Nov 25, 2009 13.60 13.66 13.45 13.50
1333 NYSE WLK Tue, Nov 24, 2009 13.70 13.70 13.30 13.50
1332 NYSE WLK Mon, Nov 23, 2009 13.94 13.95 13.57 13.67
1331 NYSE WLK Fri, Nov 20, 2009 13.37 13.50 13.24 13.39
1330 NYSE WLK Thu, Nov 19, 2009 13.60 13.65 13.11 13.50
1329 NYSE WLK Wed, Nov 18, 2009 13.93 13.93 13.55 13.66
1328 NYSE WLK Tue, Nov 17, 2009 13.75 13.97 13.66 13.88
1327 NYSE WLK Mon, Nov 16, 2009 13.42 13.88 13.42 13.87
1326 NYSE WLK Fri, Nov 13, 2009 13.16 13.38 13.15 13.27
1325 NYSE WLK Thu, Nov 12, 2009 13.39 13.68 13.19 13.22
1324 NYSE WLK Wed, Nov 11, 2009 13.31 13.62 13.24 13.40
1323 NYSE WLK Tue, Nov 10, 2009 13.16 13.36 13.07 13.26
1322 NYSE WLK Mon, Nov 9, 2009 12.98 13.31 12.96 13.18
1321 NYSE WLK Fri, Nov 6, 2009 12.74 13.06 12.73 12.89
1320 NYSE WLK Thu, Nov 5, 2009 12.28 13.00 12.13 12.82
1319 NYSE WLK Wed, Nov 4, 2009 12.55 12.57 12.09 12.14
1318 NYSE WLK Tue, Nov 3, 2009 13.01 13.13 12.09 12.52
1317 NYSE WLK Mon, Nov 2, 2009 12.29 12.56 12.00 12.54
1316 NYSE WLK Fri, Oct 30, 2009 12.48 12.59 12.10 12.15
1315 NYSE WLK Thu, Oct 29, 2009 12.34 12.66 12.28 12.55
1314 NYSE WLK Wed, Oct 28, 2009 12.21 12.35 11.97 12.17
1313 NYSE WLK Tue, Oct 27, 2009 12.44 12.62 12.21 12.27
1312 NYSE WLK Mon, Oct 26, 2009 12.63 12.92 12.35 12.36
1311 NYSE WLK Fri, Oct 23, 2009 12.74 12.78 12.45 12.64
1310 NYSE WLK Thu, Oct 22, 2009 12.74 12.89 12.32 12.72
1309 NYSE WLK Wed, Oct 21, 2009 13.47 13.48 12.70 12.74
1308 NYSE WLK Tue, Oct 20, 2009 13.69 13.78 13.36 13.48
1307 NYSE WLK Mon, Oct 19, 2009 13.62 13.77 13.51 13.72
1306 NYSE WLK Fri, Oct 16, 2009 13.51 13.62 12.97 13.51
1305 NYSE WLK Thu, Oct 15, 2009 13.48 13.64 13.32 13.58
1304 NYSE WLK Wed, Oct 14, 2009 13.47 13.54 13.36 13.54
1303 NYSE WLK Tue, Oct 13, 2009 13.20 13.28 12.92 13.27
1302 NYSE WLK Mon, Oct 12, 2009 13.41 13.46 13.10 13.20
1301 NYSE WLK Fri, Oct 9, 2009 13.22 13.38 13.17 13.25
1300 NYSE WLK Thu, Oct 8, 2009 13.13 13.29 12.95 13.23
1299 NYSE WLK Wed, Oct 7, 2009 12.95 13.13 12.86 13.00
1298 NYSE WLK Tue, Oct 6, 2009 12.88 13.12 12.83 13.04
1297 NYSE WLK Mon, Oct 5, 2009 12.42 12.79 12.38 12.75
1296 NYSE WLK Fri, Oct 2, 2009 12.28 12.59 12.28 12.40
1295 NYSE WLK Thu, Oct 1, 2009 12.82 12.82 12.37 12.38
1294 NYSE WLK Wed, Sep 30, 2009 13.26 13.26 12.67 12.85
1293 NYSE WLK Tue, Sep 29, 2009 13.46 13.49 13.17 13.18
1292 NYSE WLK Mon, Sep 28, 2009 13.14 13.50 13.08 13.46
1291 NYSE WLK Fri, Sep 25, 2009 13.08 13.20 12.84 13.11
1290 NYSE WLK Thu, Sep 24, 2009 13.52 13.67 13.10 13.16
1289 NYSE WLK Wed, Sep 23, 2009 13.53 13.88 13.50 13.52
1288 NYSE WLK Tue, Sep 22, 2009 13.48 13.53 13.30 13.46
1287 NYSE WLK Mon, Sep 21, 2009 13.46 13.47 13.22 13.34
1286 NYSE WLK Fri, Sep 18, 2009 13.85 13.99 13.58 13.60
1285 NYSE WLK Thu, Sep 17, 2009 14.00 14.11 13.74 13.80
1284 NYSE WLK Wed, Sep 16, 2009 13.75 14.10 13.71 14.09
1283 NYSE WLK Tue, Sep 15, 2009 13.38 13.80 13.32 13.72
1282 NYSE WLK Mon, Sep 14, 2009 13.12 13.47 13.06 13.38
1281 NYSE WLK Fri, Sep 11, 2009 13.00 13.91 12.92 13.18
1280 NYSE WLK Thu, Sep 10, 2009 12.60 12.91 12.50 12.89
1279 NYSE WLK Wed, Sep 9, 2009 12.29 12.69 12.12 12.60
1278 NYSE WLK Tue, Sep 8, 2009 12.18 12.40 12.13 12.29
1277 NYSE WLK Fri, Sep 4, 2009 12.06 12.15 11.74 12.13
1276 NYSE WLK Thu, Sep 3, 2009 11.97 12.10 11.69 12.06
1275 NYSE WLK Wed, Sep 2, 2009 11.71 12.03 11.56 11.93
1274 NYSE WLK Tue, Sep 1, 2009 11.98 12.21 11.66 11.71
1273 NYSE WLK Mon, Aug 31, 2009 12.02 12.12 11.83 12.02
1272 NYSE WLK Fri, Aug 28, 2009 12.35 12.42 12.02 12.15
1271 NYSE WLK Thu, Aug 27, 2009 12.23 12.33 11.75 12.21
1270 NYSE WLK Wed, Aug 26, 2009 12.36 12.39 12.11 12.23
1269 NYSE WLK Tue, Aug 25, 2009 12.46 12.62 12.23 12.36
1268 NYSE WLK Mon, Aug 24, 2009 12.59 12.85 12.34 12.43
1267 NYSE WLK Fri, Aug 21, 2009 12.35 12.55 12.29 12.52
1266 NYSE WLK Thu, Aug 20, 2009 12.33 12.38 12.13 12.19
1265 NYSE WLK Wed, Aug 19, 2009 11.88 12.34 11.88 12.32
1264 NYSE WLK Tue, Aug 18, 2009 11.82 12.12 11.64 12.07
1263 NYSE WLK Mon, Aug 17, 2009 11.84 11.94 11.67 11.73
1262 NYSE WLK Fri, Aug 14, 2009 12.41 12.41 11.82 12.08
1261 NYSE WLK Thu, Aug 13, 2009 12.42 12.47 12.20 12.41
1260 NYSE WLK Wed, Aug 12, 2009 12.32 12.56 12.24 12.40
1259 NYSE WLK Tue, Aug 11, 2009 12.28 12.39 12.07 12.35
1258 NYSE WLK Mon, Aug 10, 2009 12.15 12.45 12.11 12.31
1257 NYSE WLK Fri, Aug 7, 2009 12.34 12.39 12.09 12.32
1256 NYSE WLK Thu, Aug 6, 2009 12.15 12.39 12.03 12.20
1255 NYSE WLK Wed, Aug 5, 2009 12.32 12.37 11.98 12.25
1254 NYSE WLK Tue, Aug 4, 2009 13.20 13.28 11.88 12.37
1253 NYSE WLK Mon, Aug 3, 2009 12.65 13.05 12.49 13.05
1252 NYSE WLK Fri, Jul 31, 2009 12.59 12.75 12.49 12.50
1251 NYSE WLK Thu, Jul 30, 2009 12.50 12.90 12.49 12.60
1250 NYSE WLK Wed, Jul 29, 2009 12.38 12.53 12.22 12.45
1249 NYSE WLK Tue, Jul 28, 2009 12.36 12.74 12.36 12.54
1248 NYSE WLK Mon, Jul 27, 2009 12.58 12.73 12.25 12.40
1247 NYSE WLK Fri, Jul 24, 2009 11.99 12.59 11.89 12.58
1246 NYSE WLK Thu, Jul 23, 2009 11.45 12.31 11.41 12.13
1245 NYSE WLK Wed, Jul 22, 2009 11.09 11.49 10.92 11.45
1244 NYSE WLK Tue, Jul 21, 2009 10.83 11.11 10.77 11.08
1243 NYSE WLK Mon, Jul 20, 2009 10.80 11.00 10.65 10.69
1242 NYSE WLK Fri, Jul 17, 2009 10.48 10.76 10.35 10.71
1241 NYSE WLK Thu, Jul 16, 2009 10.22 10.52 10.18 10.46
1240 NYSE WLK Wed, Jul 15, 2009 10.25 10.33 10.12 10.29
1239 NYSE WLK Tue, Jul 14, 2009 9.96 10.12 9.71 10.05
1238 NYSE WLK Mon, Jul 13, 2009 9.78 10.03 9.66 10.00
1237 NYSE WLK Fri, Jul 10, 2009 9.45 9.77 9.40 9.75
1236 NYSE WLK Thu, Jul 9, 2009 9.72 9.72 9.40 9.49
1235 NYSE WLK Wed, Jul 8, 2009 9.61 9.67 9.45 9.60
1234 NYSE WLK Tue, Jul 7, 2009 9.97 9.98 9.53 9.54
1233 NYSE WLK Mon, Jul 6, 2009 10.03 10.03 9.70 10.00
1232 NYSE WLK Thu, Jul 2, 2009 10.49 10.52 10.07 10.07
1231 NYSE WLK Wed, Jul 1, 2009 10.25 10.73 10.18 10.60
1230 NYSE WLK Tue, Jun 30, 2009 10.53 10.55 10.16 10.20
1229 NYSE WLK Mon, Jun 29, 2009 10.52 10.65 10.25 10.53
1228 NYSE WLK Fri, Jun 26, 2009 10.17 10.44 10.17 10.44
1227 NYSE WLK Thu, Jun 25, 2009 9.84 10.23 9.82 10.20
1226 NYSE WLK Wed, Jun 24, 2009 9.67 10.03 9.64 9.82
1225 NYSE WLK Tue, Jun 23, 2009 9.83 9.85 9.57 9.68
1224 NYSE WLK Mon, Jun 22, 2009 10.11 10.19 9.68 9.68
1223 NYSE WLK Fri, Jun 19, 2009 10.21 10.28 10.11 10.23
1222 NYSE WLK Thu, Jun 18, 2009 10.00 10.18 9.91 10.08
1221 NYSE WLK Wed, Jun 17, 2009 10.02 10.21 9.90 10.12
1220 NYSE WLK Tue, Jun 16, 2009 10.44 10.49 10.04 10.10
1219 NYSE WLK Mon, Jun 15, 2009 10.72 10.72 10.19 10.39
1218 NYSE WLK Fri, Jun 12, 2009 10.91 11.03 10.80 11.00
1217 NYSE WLK Thu, Jun 11, 2009 10.90 11.29 10.88 11.04
1216 NYSE WLK Wed, Jun 10, 2009 11.04 11.05 10.58 10.93
1215 NYSE WLK Tue, Jun 9, 2009 10.50 11.06 10.45 10.91
1214 NYSE WLK Mon, Jun 8, 2009 10.39 10.63 10.16 10.51
1213 NYSE WLK Fri, Jun 5, 2009 10.77 10.88 10.38 10.48
1212 NYSE WLK Thu, Jun 4, 2009 10.53 10.65 10.34 10.63
1211 NYSE WLK Wed, Jun 3, 2009 10.40 10.51 10.20 10.50
1210 NYSE WLK Tue, Jun 2, 2009 10.54 10.69 10.39 10.54
1209 NYSE WLK Mon, Jun 1, 2009 10.40 10.72 10.27 10.56
1208 NYSE WLK Fri, May 29, 2009 10.18 10.31 10.10 10.23
1207 NYSE WLK Thu, May 28, 2009 10.15 10.28 9.83 10.12
1206 NYSE WLK Wed, May 27, 2009 10.23 10.38 10.09 10.12
1205 NYSE WLK Tue, May 26, 2009 10.17 10.34 10.05 10.26
1204 NYSE WLK Fri, May 22, 2009 10.13 10.39 10.07 10.16
1203 NYSE WLK Thu, May 21, 2009 10.40 10.40 10.02 10.15
1202 NYSE WLK Wed, May 20, 2009 10.70 11.08 10.58 10.65
1201 NYSE WLK Tue, May 19, 2009 10.64 10.86 10.55 10.66
1200 NYSE WLK Mon, May 18, 2009 10.08 10.66 9.66 10.66
1199 NYSE WLK Fri, May 15, 2009 10.03 10.35 9.94 10.04
1198 NYSE WLK Thu, May 14, 2009 10.06 10.17 9.81 10.06
1197 NYSE WLK Wed, May 13, 2009 10.24 10.33 9.93 9.99
1196 NYSE WLK Tue, May 12, 2009 10.52 10.58 10.33 10.46
1195 NYSE WLK Mon, May 11, 2009 10.12 10.62 10.06 10.42
1194 NYSE WLK Fri, May 8, 2009 10.26 10.28 10.07 10.28
1193 NYSE WLK Thu, May 7, 2009 10.30 10.33 9.98 10.08
1192 NYSE WLK Wed, May 6, 2009 10.28 10.32 9.73 10.03
1191 NYSE WLK Tue, May 5, 2009 10.09 10.73 9.77 10.00
1190 NYSE WLK Mon, May 4, 2009 9.42 9.81 9.32 9.78
1189 NYSE WLK Fri, May 1, 2009 9.30 9.44 9.14 9.30
1188 NYSE WLK Thu, Apr 30, 2009 9.42 9.84 9.29 9.35
1187 NYSE WLK Wed, Apr 29, 2009 8.58 9.31 8.50 9.25
1186 NYSE WLK Tue, Apr 28, 2009 8.50 8.75 8.41 8.47
1185 NYSE WLK Mon, Apr 27, 2009 8.98 9.00 8.51 8.59
1184 NYSE WLK Fri, Apr 24, 2009 8.63 9.25 8.50 9.13
1183 NYSE WLK Thu, Apr 23, 2009 8.35 8.67 8.33 8.49
1182 NYSE WLK Wed, Apr 22, 2009 8.26 8.67 8.25 8.34
1181 NYSE WLK Tue, Apr 21, 2009 8.25 8.45 8.04 8.39
1180 NYSE WLK Mon, Apr 20, 2009 8.88 8.99 8.35 8.35
1179 NYSE WLK Fri, Apr 17, 2009 8.72 9.11 8.62 9.02
1178 NYSE WLK Thu, Apr 16, 2009 8.45 8.81 8.30 8.69
1177 NYSE WLK Wed, Apr 15, 2009 8.34 8.55 8.32 8.39
1176 NYSE WLK Tue, Apr 14, 2009 8.47 8.70 8.35 8.43
1175 NYSE WLK Mon, Apr 13, 2009 8.78 8.87 8.60 8.63
1174 NYSE WLK Thu, Apr 9, 2009 8.50 9.00 8.42 8.98
1173 NYSE WLK Wed, Apr 8, 2009 8.10 8.35 8.10 8.29
1172 NYSE WLK Tue, Apr 7, 2009 8.29 8.35 8.05 8.09
1171 NYSE WLK Mon, Apr 6, 2009 8.47 8.55 8.28 8.45
1170 NYSE WLK Fri, Apr 3, 2009 8.21 8.58 8.12 8.57
1169 NYSE WLK Thu, Apr 2, 2009 7.75 8.29 7.75 8.21
1168 NYSE WLK Wed, Apr 1, 2009 7.18 7.58 7.10 7.52
1167 NYSE WLK Tue, Mar 31, 2009 7.43 7.52 7.20 7.32
1166 NYSE WLK Mon, Mar 30, 2009 7.23 7.45 7.09 7.31
1165 NYSE WLK Fri, Mar 27, 2009 8.06 8.06 7.38 7.40
1164 NYSE WLK Thu, Mar 26, 2009 8.13 8.20 7.90 8.14
1163 NYSE WLK Wed, Mar 25, 2009 7.57 8.23 7.48 8.05
1162 NYSE WLK Tue, Mar 24, 2009 7.43 7.77 7.38 7.51
1161 NYSE WLK Mon, Mar 23, 2009 6.94 7.55 6.86 7.54
1160 NYSE WLK Fri, Mar 20, 2009 7.01 7.08 6.82 6.89
1159 NYSE WLK Thu, Mar 19, 2009 7.06 7.20 6.85 6.96
1158 NYSE WLK Wed, Mar 18, 2009 6.86 7.05 6.69 6.97
1157 NYSE WLK Tue, Mar 17, 2009 6.50 6.91 6.50 6.91
1156 NYSE WLK Mon, Mar 16, 2009 6.51 6.72 6.43 6.53
1155 NYSE WLK Fri, Mar 13, 2009 6.08 6.47 6.08 6.43
1154 NYSE WLK Thu, Mar 12, 2009 5.93 6.09 5.67 6.03
1153 NYSE WLK Wed, Mar 11, 2009 5.86 6.07 5.75 5.98
1152 NYSE WLK Tue, Mar 10, 2009 5.40 5.83 5.33 5.79
1151 NYSE WLK Mon, Mar 9, 2009 5.29 5.43 5.15 5.20
1150 NYSE WLK Fri, Mar 6, 2009 5.35 5.54 5.25 5.37
1149 NYSE WLK Thu, Mar 5, 2009 5.86 5.91 5.23 5.27
1148 NYSE WLK Wed, Mar 4, 2009 6.05 6.27 5.93 6.09
1147 NYSE WLK Tue, Mar 3, 2009 6.02 6.18 5.85 5.85
1146 NYSE WLK Mon, Mar 2, 2009 6.11 6.23 5.86 5.89
1145 NYSE WLK Fri, Feb 27, 2009 6.36 6.55 6.23 6.25
1144 NYSE WLK Thu, Feb 26, 2009 6.72 6.85 6.46 6.49
1143 NYSE WLK Wed, Feb 25, 2009 6.76 6.90 6.52 6.66
1142 NYSE WLK Tue, Feb 24, 2009 6.80 6.96 6.59 6.85
1141 NYSE WLK Mon, Feb 23, 2009 7.00 7.13 6.71 6.71
1140 NYSE WLK Fri, Feb 20, 2009 6.93 7.20 6.92 7.01
1139 NYSE WLK Thu, Feb 19, 2009 7.17 7.17 6.99 7.04
1138 NYSE WLK Wed, Feb 18, 2009 6.82 7.74 6.67 7.13
1137 NYSE WLK Tue, Feb 17, 2009 6.86 6.99 6.74 6.85
1136 NYSE WLK Fri, Feb 13, 2009 7.05 7.25 6.99 7.06
1135 NYSE WLK Thu, Feb 12, 2009 6.91 7.10 6.78 7.06
1134 NYSE WLK Wed, Feb 11, 2009 7.00 7.20 6.92 7.02
1133 NYSE WLK Tue, Feb 10, 2009 7.30 7.40 6.91 6.97
1132 NYSE WLK Mon, Feb 9, 2009 7.31 7.57 7.24 7.37
1131 NYSE WLK Fri, Feb 6, 2009 7.12 7.35 7.12 7.32
1130 NYSE WLK Thu, Feb 5, 2009 6.84 7.29 6.79 7.11
1129 NYSE WLK Wed, Feb 4, 2009 6.63 7.02 6.61 6.92
1128 NYSE WLK Tue, Feb 3, 2009 6.74 6.74 6.48 6.61
1127 NYSE WLK Mon, Feb 2, 2009 6.79 6.88 6.58 6.71
1126 NYSE WLK Fri, Jan 30, 2009 7.36 7.40 6.76 6.84
1125 NYSE WLK Thu, Jan 29, 2009 7.40 7.56 7.32 7.33
1124 NYSE WLK Wed, Jan 28, 2009 7.33 7.59 7.27 7.51
1123 NYSE WLK Tue, Jan 27, 2009 7.01 7.29 6.99 7.15
1122 NYSE WLK Mon, Jan 26, 2009 6.81 7.26 6.81 7.00
1121 NYSE WLK Fri, Jan 23, 2009 6.59 7.07 6.55 6.85
1120 NYSE WLK Thu, Jan 22, 2009 7.10 7.14 6.57 6.82
1119 NYSE WLK Wed, Jan 21, 2009 6.85 7.27 6.67 7.25
1118 NYSE WLK Tue, Jan 20, 2009 7.50 7.50 6.76 6.85
1117 NYSE WLK Fri, Jan 16, 2009 7.50 7.57 7.22 7.55
1116 NYSE WLK Thu, Jan 15, 2009 7.31 7.49 6.89 7.41
1115 NYSE WLK Wed, Jan 14, 2009 7.52 7.67 7.14 7.33
1114 NYSE WLK Tue, Jan 13, 2009 7.34 7.72 7.32 7.65
1113 NYSE WLK Mon, Jan 12, 2009 7.48 7.57 7.32 7.40
1112 NYSE WLK Fri, Jan 9, 2009 8.11 8.11 7.50 7.51
1111 NYSE WLK Thu, Jan 8, 2009 7.87 8.12 7.66 8.07
1110 NYSE WLK Wed, Jan 7, 2009 8.12 8.18 7.84 7.92
1109 NYSE WLK Tue, Jan 6, 2009 8.40 8.50 8.13 8.32
1108 NYSE WLK Mon, Jan 5, 2009 8.32 8.45 8.03 8.29
1107 NYSE WLK Fri, Jan 2, 2009 8.16 8.42 8.07 8.34
1106 NYSE WLK Wed, Dec 31, 2008 7.93 8.26 7.62 8.15
1105 NYSE WLK Tue, Dec 30, 2008 7.53 7.99 7.31 7.95
1104 NYSE WLK Mon, Dec 29, 2008 7.71 7.74 7.33 7.40
1103 NYSE WLK Fri, Dec 26, 2008 7.63 7.83 7.55 7.75
1102 NYSE WLK Wed, Dec 24, 2008 7.52 7.70 7.41 7.58
1101 NYSE WLK Tue, Dec 23, 2008 7.62 7.69 7.29 7.40
1100 NYSE WLK Mon, Dec 22, 2008 7.80 7.81 7.26 7.31
1099 NYSE WLK Fri, Dec 19, 2008 8.05 8.18 7.71 7.77
1098 NYSE WLK Thu, Dec 18, 2008 8.26 8.34 7.94 8.01
1097 NYSE WLK Wed, Dec 17, 2008 7.99 8.43 7.98 8.22
1096 NYSE WLK Tue, Dec 16, 2008 7.56 8.05 7.56 8.01
1095 NYSE WLK Mon, Dec 15, 2008 7.63 7.83 7.31 7.52
1094 NYSE WLK Fri, Dec 12, 2008 7.13 7.68 7.00 7.63
1093 NYSE WLK Thu, Dec 11, 2008 7.57 7.79 7.15 7.28
1092 NYSE WLK Wed, Dec 10, 2008 7.58 7.69 7.40 7.61
1091 NYSE WLK Tue, Dec 9, 2008 7.92 8.16 7.45 7.58
1090 NYSE WLK Mon, Dec 8, 2008 8.31 8.31 7.70 8.09
1089 NYSE WLK Fri, Dec 5, 2008 7.50 7.90 7.19 7.87
1088 NYSE WLK Thu, Dec 4, 2008 7.70 8.18 7.34 7.60
1087 NYSE WLK Wed, Dec 3, 2008 7.43 8.30 7.43 7.80
1086 NYSE WLK Tue, Dec 2, 2008 8.21 8.35 7.35 7.64
1085 NYSE WLK Mon, Dec 1, 2008 8.25 8.39 7.83 8.08
1084 NYSE WLK Fri, Nov 28, 2008 8.40 8.55 8.32 8.44
1083 NYSE WLK Wed, Nov 26, 2008 8.00 8.74 7.83 8.50
1082 NYSE WLK Tue, Nov 25, 2008 7.60 8.25 7.51 8.23
1081 NYSE WLK Mon, Nov 24, 2008 6.71 7.50 6.60 7.46
1080 NYSE WLK Fri, Nov 21, 2008 6.41 6.86 5.80 6.69
1079 NYSE WLK Thu, Nov 20, 2008 6.81 6.96 6.15 6.23
1078 NYSE WLK Wed, Nov 19, 2008 7.53 7.72 6.70 6.77
1077 NYSE WLK Tue, Nov 18, 2008 7.43 7.70 7.26 7.58
1076 NYSE WLK Mon, Nov 17, 2008 7.22 7.75 7.06 7.42
1075 NYSE WLK Fri, Nov 14, 2008 7.72 7.97 7.26 7.27
1074 NYSE WLK Thu, Nov 13, 2008 7.37 7.83 6.75 7.82
1073 NYSE WLK Wed, Nov 12, 2008 7.89 8.05 7.30 7.32
1072 NYSE WLK Tue, Nov 11, 2008 7.75 8.15 7.48 8.00
1071 NYSE WLK Mon, Nov 10, 2008 7.98 8.15 7.77 7.88
1070 NYSE WLK Fri, Nov 7, 2008 7.16 7.92 7.04 7.77
1069 NYSE WLK Thu, Nov 6, 2008 7.83 8.07 7.04 7.09
1068 NYSE WLK Wed, Nov 5, 2008 8.92 9.19 8.56 8.64
1067 NYSE WLK Tue, Nov 4, 2008 9.19 9.27 8.79 9.00
1066 NYSE WLK Mon, Nov 3, 2008 9.08 9.23 8.78 8.98
1065 NYSE WLK Fri, Oct 31, 2008 8.46 9.27 8.43 9.12
1064 NYSE WLK Thu, Oct 30, 2008 8.32 8.62 8.20 8.53
1063 NYSE WLK Wed, Oct 29, 2008 8.01 8.58 7.94 8.29
1062 NYSE WLK Tue, Oct 28, 2008 7.40 7.98 7.01 7.96
1061 NYSE WLK Mon, Oct 27, 2008 7.71 8.08 7.24 7.24
1060 NYSE WLK Fri, Oct 24, 2008 7.40 8.12 7.30 7.88
1059 NYSE WLK Thu, Oct 23, 2008 8.37 8.76 7.59 8.17
1058 NYSE WLK Wed, Oct 22, 2008 8.58 8.59 8.13 8.42
1057 NYSE WLK Tue, Oct 21, 2008 8.83 8.89 8.57 8.62
1056 NYSE WLK Mon, Oct 20, 2008 8.84 9.14 8.64 9.00
1055 NYSE WLK Fri, Oct 17, 2008 8.87 9.22 8.64 8.76
1054 NYSE WLK Thu, Oct 16, 2008 8.67 9.21 8.25 9.15
1053 NYSE WLK Wed, Oct 15, 2008 9.48 9.68 8.65 8.71
1052 NYSE WLK Tue, Oct 14, 2008 10.22 10.42 9.38 9.70
1051 NYSE WLK Mon, Oct 13, 2008 9.07 10.02 9.00 10.02
1050 NYSE WLK Fri, Oct 10, 2008 8.40 9.40 8.02 8.58
1049 NYSE WLK Thu, Oct 9, 2008 9.33 9.62 8.83 8.83
1048 NYSE WLK Wed, Oct 8, 2008 9.00 9.85 8.75 9.31
1047 NYSE WLK Tue, Oct 7, 2008 10.04 10.13 9.14 9.18
1046 NYSE WLK Mon, Oct 6, 2008 9.88 9.96 8.89 9.88
1045 NYSE WLK Fri, Oct 3, 2008 10.55 11.07 10.13 10.16
1044 NYSE WLK Thu, Oct 2, 2008 10.72 11.00 10.34 10.50
1043 NYSE WLK Wed, Oct 1, 2008 10.40 11.11 10.20 10.92
1042 NYSE WLK Tue, Sep 30, 2008 10.01 10.63 9.79 10.52
1041 NYSE WLK Mon, Sep 29, 2008 10.62 10.62 9.28 9.73
1040 NYSE WLK Fri, Sep 26, 2008 10.76 11.11 10.30 10.87
1039 NYSE WLK Thu, Sep 25, 2008 10.55 11.33 10.50 10.97
1038 NYSE WLK Wed, Sep 24, 2008 10.85 10.85 10.39 10.55
1037 NYSE WLK Tue, Sep 23, 2008 10.84 11.09 10.61 10.68
1036 NYSE WLK Mon, Sep 22, 2008 10.75 10.88 10.48 10.83
1035 NYSE WLK Fri, Sep 19, 2008 10.38 11.11 10.38 10.82
1034 NYSE WLK Thu, Sep 18, 2008 9.34 10.17 8.91 9.96
1033 NYSE WLK Wed, Sep 17, 2008 9.63 9.69 8.88 9.21
1032 NYSE WLK Tue, Sep 16, 2008 9.08 10.22 9.08 10.00
1031 NYSE WLK Mon, Sep 15, 2008 9.58 9.65 9.05 9.35
1030 NYSE WLK Fri, Sep 12, 2008 9.85 10.09 9.52 9.96
1029 NYSE WLK Thu, Sep 11, 2008 9.25 9.94 9.18 9.93
1028 NYSE WLK Wed, Sep 10, 2008 9.44 9.68 9.36 9.48
1027 NYSE WLK Tue, Sep 9, 2008 9.39 9.75 8.75 9.28
1026 NYSE WLK Mon, Sep 8, 2008 9.45 9.49 9.30 9.45
1025 NYSE WLK Fri, Sep 5, 2008 9.10 9.18 8.83 9.14
1024 NYSE WLK Thu, Sep 4, 2008 9.48 9.50 9.08 9.15
1023 NYSE WLK Wed, Sep 3, 2008 9.41 9.69 9.39 9.59
1022 NYSE WLK Tue, Sep 2, 2008 9.65 9.65 9.32 9.48
1021 NYSE WLK Fri, Aug 29, 2008 9.61 9.68 9.42 9.49
1020 NYSE WLK Thu, Aug 28, 2008 9.58 9.65 9.47 9.62
1019 NYSE WLK Wed, Aug 27, 2008 9.45 9.65 9.37 9.51
1018 NYSE WLK Tue, Aug 26, 2008 9.52 9.71 9.26 9.48
1017 NYSE WLK Mon, Aug 25, 2008 9.70 9.70 9.43 9.55
1016 NYSE WLK Fri, Aug 22, 2008 9.72 9.80 9.61 9.76
1015 NYSE WLK Thu, Aug 21, 2008 9.87 9.90 9.62 9.67
1014 NYSE WLK Wed, Aug 20, 2008 9.93 10.08 9.75 9.91
1013 NYSE WLK Tue, Aug 19, 2008 10.14 10.15 9.85 9.96
1012 NYSE WLK Mon, Aug 18, 2008 9.85 10.44 9.55 10.15
1011 NYSE WLK Fri, Aug 15, 2008 10.51 10.72 10.11 10.30
1010 NYSE WLK Thu, Aug 14, 2008 10.11 10.57 10.00 10.45
1009 NYSE WLK Wed, Aug 13, 2008 10.31 10.46 9.97 10.13
1008 NYSE WLK Tue, Aug 12, 2008 10.14 10.50 9.99 10.22
1007 NYSE WLK Mon, Aug 11, 2008 10.00 10.15 9.83 10.12
1006 NYSE WLK Fri, Aug 8, 2008 9.74 10.30 9.73 10.02
1005 NYSE WLK Thu, Aug 7, 2008 9.52 10.07 9.40 9.84
1004 NYSE WLK Wed, Aug 6, 2008 9.60 9.72 9.30 9.58
1003 NYSE WLK Tue, Aug 5, 2008 9.78 10.17 9.11 9.54
1002 NYSE WLK Mon, Aug 4, 2008 8.56 8.58 7.96 8.39
1001 NYSE WLK Fri, Aug 1, 2008 8.70 8.96 8.48 8.63
1000 NYSE WLK Thu, Jul 31, 2008 8.34 8.94 8.15 8.76
999 NYSE WLK Wed, Jul 30, 2008 8.21 8.48 8.21 8.45
998 NYSE WLK Tue, Jul 29, 2008 8.00 8.16 7.98 8.15
997 NYSE WLK Mon, Jul 28, 2008 8.30 8.46 7.97 8.01
996 NYSE WLK Fri, Jul 25, 2008 8.29 8.58 8.27 8.38
995 NYSE WLK Thu, Jul 24, 2008 8.62 8.65 8.14 8.28
994 NYSE WLK Wed, Jul 23, 2008 8.41 8.68 8.36 8.57
993 NYSE WLK Tue, Jul 22, 2008 7.43 8.55 7.43 8.46
992 NYSE WLK Mon, Jul 21, 2008 7.43 7.63 7.39 7.50
991 NYSE WLK Fri, Jul 18, 2008 7.39 7.53 7.15 7.40
990 NYSE WLK Thu, Jul 17, 2008 6.88 7.44 6.88 7.39
989 NYSE WLK Wed, Jul 16, 2008 6.68 6.97 6.54 6.84
988 NYSE WLK Tue, Jul 15, 2008 6.61 6.85 6.36 6.63
987 NYSE WLK Mon, Jul 14, 2008 7.10 7.10 6.56 6.64
986 NYSE WLK Fri, Jul 11, 2008 6.73 7.13 6.63 7.03
985 NYSE WLK Thu, Jul 10, 2008 6.78 7.05 6.73 6.82
984 NYSE WLK Wed, Jul 9, 2008 6.79 6.97 6.71 6.71
983 NYSE WLK Tue, Jul 8, 2008 6.62 6.83 6.39 6.80
982 NYSE WLK Mon, Jul 7, 2008 6.79 6.91 6.48 6.60
981 NYSE WLK Thu, Jul 3, 2008 6.71 6.81 6.47 6.75
980 NYSE WLK Wed, Jul 2, 2008 7.24 7.31 6.58 6.74
979 NYSE WLK Tue, Jul 1, 2008 7.32 7.36 7.01 7.25
978 NYSE WLK Mon, Jun 30, 2008 7.65 7.70 7.43 7.43
977 NYSE WLK Fri, Jun 27, 2008 7.70 7.95 7.54 7.69
976 NYSE WLK Thu, Jun 26, 2008 8.23 8.24 7.66 7.70
975 NYSE WLK Wed, Jun 25, 2008 8.25 8.61 8.20 8.36
974 NYSE WLK Tue, Jun 24, 2008 8.37 8.60 8.22 8.26
973 NYSE WLK Mon, Jun 23, 2008 8.54 8.57 8.32 8.44
972 NYSE WLK Fri, Jun 20, 2008 8.47 8.72 8.44 8.44
971 NYSE WLK Thu, Jun 19, 2008 8.41 8.52 8.35 8.52
970 NYSE WLK Wed, Jun 18, 2008 8.39 8.49 8.38 8.39
969 NYSE WLK Tue, Jun 17, 2008 8.59 8.59 8.45 8.48
968 NYSE WLK Mon, Jun 16, 2008 8.09 8.50 8.09 8.47
967 NYSE WLK Fri, Jun 13, 2008 8.44 8.63 8.34 8.61
966 NYSE WLK Thu, Jun 12, 2008 8.43 8.49 8.36 8.41
965 NYSE WLK Wed, Jun 11, 2008 8.40 8.46 8.28 8.35
964 NYSE WLK Tue, Jun 10, 2008 8.34 8.41 8.27 8.39
963 NYSE WLK Mon, Jun 9, 2008 8.68 8.68 8.33 8.48
962 NYSE WLK Fri, Jun 6, 2008 8.74 8.76 8.49 8.56
961 NYSE WLK Thu, Jun 5, 2008 8.64 8.87 8.48 8.87
960 NYSE WLK Wed, Jun 4, 2008 8.60 8.71 8.53 8.65
959 NYSE WLK Tue, Jun 3, 2008 8.64 8.68 8.46 8.59
958 NYSE WLK Mon, Jun 2, 2008 8.68 8.71 8.47 8.69
957 NYSE WLK Fri, May 30, 2008 8.72 8.90 8.48 8.68
956 NYSE WLK Thu, May 29, 2008 8.41 8.80 8.41 8.72
955 NYSE WLK Wed, May 28, 2008 8.44 8.57 8.44 8.46
954 NYSE WLK Tue, May 27, 2008 8.48 8.54 8.30 8.42
953 NYSE WLK Fri, May 23, 2008 8.50 8.54 8.37 8.48
952 NYSE WLK Thu, May 22, 2008 8.52 8.64 8.44 8.49
951 NYSE WLK Wed, May 21, 2008 8.58 8.58 8.44 8.49
950 NYSE WLK Tue, May 20, 2008 8.76 8.76 8.52 8.59
949 NYSE WLK Mon, May 19, 2008 8.61 8.88 8.46 8.76
948 NYSE WLK Fri, May 16, 2008 8.59 8.62 8.44 8.57
947 NYSE WLK Thu, May 15, 2008 8.46 8.67 8.36 8.64
946 NYSE WLK Wed, May 14, 2008 8.40 8.54 8.31 8.49
945 NYSE WLK Tue, May 13, 2008 8.20 8.49 8.20 8.31
944 NYSE WLK Mon, May 12, 2008 8.17 8.30 8.14 8.24
943 NYSE WLK Fri, May 9, 2008 8.07 8.24 8.03 8.21
942 NYSE WLK Thu, May 8, 2008 8.24 8.25 7.99 8.10
941 NYSE WLK Wed, May 7, 2008 8.21 8.47 8.11 8.22
940 NYSE WLK Tue, May 6, 2008 8.14 8.41 7.99 8.21
939 NYSE WLK Mon, May 5, 2008 7.75 8.34 7.67 8.30
938 NYSE WLK Fri, May 2, 2008 7.64 8.00 7.54 7.79
937 NYSE WLK Thu, May 1, 2008 7.38 8.00 6.85 7.60
936 NYSE WLK Wed, Apr 30, 2008 8.43 8.60 8.28 8.36
935 NYSE WLK Tue, Apr 29, 2008 8.56 8.63 8.36 8.40
934 NYSE WLK Mon, Apr 28, 2008 8.60 8.70 8.45 8.62
933 NYSE WLK Fri, Apr 25, 2008 8.52 8.72 8.30 8.52
932 NYSE WLK Thu, Apr 24, 2008 7.91 8.63 7.91 8.37
931 NYSE WLK Wed, Apr 23, 2008 7.94 7.95 7.70 7.90
930 NYSE WLK Tue, Apr 22, 2008 7.87 8.28 7.77 7.94
929 NYSE WLK Mon, Apr 21, 2008 7.94 8.00 7.82 7.84
928 NYSE WLK Fri, Apr 18, 2008 8.01 8.16 7.95 8.02
927 NYSE WLK Thu, Apr 17, 2008 8.13 8.13 7.84 8.01
926 NYSE WLK Wed, Apr 16, 2008 7.67 8.21 7.67 8.18
925 NYSE WLK Tue, Apr 15, 2008 8.11 8.11 7.46 7.66
924 NYSE WLK Mon, Apr 14, 2008 8.22 8.37 7.96 8.08
923 NYSE WLK Fri, Apr 11, 2008 8.54 8.58 8.21 8.31
922 NYSE WLK Thu, Apr 10, 2008 8.40 9.08 8.40 8.50
921 NYSE WLK Wed, Apr 9, 2008 8.47 8.56 7.94 7.97
920 NYSE WLK Tue, Apr 8, 2008 8.71 8.76 8.31 8.59
919 NYSE WLK Mon, Apr 7, 2008 8.39 9.64 8.25 8.84
918 NYSE WLK Fri, Apr 4, 2008 7.21 7.94 7.13 7.92
917 NYSE WLK Thu, Apr 3, 2008 6.83 7.48 6.83 7.17
916 NYSE WLK Wed, Apr 2, 2008 6.90 7.17 6.74 6.81
915 NYSE WLK Tue, Apr 1, 2008 6.48 6.84 6.48 6.82
914 NYSE WLK Mon, Mar 31, 2008 6.53 6.65 6.49 6.53
913 NYSE WLK Fri, Mar 28, 2008 6.63 6.72 6.46 6.51
912 NYSE WLK Thu, Mar 27, 2008 6.80 6.84 6.54 6.61
911 NYSE WLK Wed, Mar 26, 2008 6.68 6.74 6.49 6.73
910 NYSE WLK Tue, Mar 25, 2008 6.91 7.18 6.61 6.76
909 NYSE WLK Mon, Mar 24, 2008 6.75 7.17 6.75 6.89
908 NYSE WLK Thu, Mar 20, 2008 6.47 6.73 6.47 6.66
907 NYSE WLK Wed, Mar 19, 2008 6.82 7.04 6.61 6.62
906 NYSE WLK Tue, Mar 18, 2008 6.66 6.85 6.56 6.79
905 NYSE WLK Mon, Mar 17, 2008 7.12 7.12 6.26 6.66
904 NYSE WLK Fri, Mar 14, 2008 7.53 7.55 6.81 6.95
903 NYSE WLK Thu, Mar 13, 2008 7.26 7.59 6.94 7.48
902 NYSE WLK Wed, Mar 12, 2008 7.54 7.70 7.28 7.41
901 NYSE WLK Tue, Mar 11, 2008 7.18 7.48 7.12 7.44
900 NYSE WLK Mon, Mar 10, 2008 7.37 7.40 6.93 7.00
899 NYSE WLK Fri, Mar 7, 2008 7.64 7.93 7.33 7.43
898 NYSE WLK Thu, Mar 6, 2008 8.27 8.27 7.70 7.77
897 NYSE WLK Wed, Mar 5, 2008 8.40 8.63 8.15 8.28
896 NYSE WLK Tue, Mar 4, 2008 7.92 8.46 7.68 8.37
895 NYSE WLK Mon, Mar 3, 2008 7.96 8.03 7.79 7.97
894 NYSE WLK Fri, Feb 29, 2008 8.25 8.32 8.01 8.07
893 NYSE WLK Thu, Feb 28, 2008 8.79 8.80 8.26 8.35
892 NYSE WLK Wed, Feb 27, 2008 8.34 9.01 8.31 8.89
891 NYSE WLK Tue, Feb 26, 2008 8.52 8.56 8.12 8.40
890 NYSE WLK Mon, Feb 25, 2008 8.05 8.51 7.90 8.51
889 NYSE WLK Fri, Feb 22, 2008 8.51 8.51 7.79 7.98
888 NYSE WLK Thu, Feb 21, 2008 8.47 8.64 8.34 8.56
887 NYSE WLK Wed, Feb 20, 2008 8.58 8.66 8.17 8.49
886 NYSE WLK Tue, Feb 19, 2008 9.90 9.90 8.28 8.65
885 NYSE WLK Fri, Feb 15, 2008 9.71 9.84 9.46 9.81
884 NYSE WLK Thu, Feb 14, 2008 10.13 10.21 9.75 9.83
883 NYSE WLK Wed, Feb 13, 2008 10.05 10.33 9.90 10.20
882 NYSE WLK Tue, Feb 12, 2008 10.23 10.35 9.89 9.99
881 NYSE WLK Mon, Feb 11, 2008 10.10 10.24 9.85 10.11
880 NYSE WLK Fri, Feb 8, 2008 9.90 10.18 9.84 10.10
879 NYSE WLK Thu, Feb 7, 2008 9.60 10.46 9.60 10.00
878 NYSE WLK Wed, Feb 6, 2008 9.68 10.10 9.60 9.71
877 NYSE WLK Tue, Feb 5, 2008 10.05 10.27 9.55 9.55
876 NYSE WLK Mon, Feb 4, 2008 10.90 10.95 10.01 10.21
875 NYSE WLK Fri, Feb 1, 2008 10.00 11.11 9.88 10.97
874 NYSE WLK Thu, Jan 31, 2008 9.04 10.12 9.00 10.08
873 NYSE WLK Wed, Jan 30, 2008 8.97 9.58 8.97 9.22
872 NYSE WLK Tue, Jan 29, 2008 9.06 9.18 9.03 9.07
871 NYSE WLK Mon, Jan 28, 2008 8.56 8.95 8.48 8.93
870 NYSE WLK Fri, Jan 25, 2008 8.67 8.82 8.44 8.51
869 NYSE WLK Thu, Jan 24, 2008 9.01 9.08 8.36 8.51
868 NYSE WLK Wed, Jan 23, 2008 7.70 9.04 7.52 8.96
867 NYSE WLK Tue, Jan 22, 2008 7.50 8.02 7.41 7.90
866 NYSE WLK Fri, Jan 18, 2008 7.74 7.91 7.59 7.81
865 NYSE WLK Thu, Jan 17, 2008 8.13 8.23 7.70 7.73
864 NYSE WLK Wed, Jan 16, 2008 8.16 8.32 8.04 8.13
863 NYSE WLK Tue, Jan 15, 2008 8.35 8.48 8.22 8.23
862 NYSE WLK Mon, Jan 14, 2008 8.55 8.60 8.35 8.44
861 NYSE WLK Fri, Jan 11, 2008 8.43 8.89 8.42 8.55
860 NYSE WLK Thu, Jan 10, 2008 8.02 8.61 7.95 8.46
859 NYSE WLK Wed, Jan 9, 2008 8.56 8.56 7.82 8.10
858 NYSE WLK Tue, Jan 8, 2008 8.28 8.67 8.28 8.46
857 NYSE WLK Mon, Jan 7, 2008 8.01 8.31 8.01 8.28
856 NYSE WLK Fri, Jan 4, 2008 8.79 8.91 7.94 8.03
855 NYSE WLK Thu, Jan 3, 2008 9.52 9.64 9.34 9.35
854 NYSE WLK Wed, Jan 2, 2008 9.52 9.62 9.33 9.50
853 NYSE WLK Mon, Dec 31, 2007 9.72 9.79 9.44 9.50
852 NYSE WLK Fri, Dec 28, 2007 10.10 10.10 9.71 9.73
851 NYSE WLK Thu, Dec 27, 2007 9.98 10.28 9.97 10.02
850 NYSE WLK Wed, Dec 26, 2007 10.16 10.16 9.90 9.98
849 NYSE WLK Mon, Dec 24, 2007 10.13 10.26 10.06 10.10
848 NYSE WLK Fri, Dec 21, 2007 9.65 10.12 9.65 10.07
847 NYSE WLK Thu, Dec 20, 2007 9.23 9.61 9.23 9.53
846 NYSE WLK Wed, Dec 19, 2007 9.23 9.41 9.21 9.25
845 NYSE WLK Tue, Dec 18, 2007 9.39 9.46 9.17 9.30
844 NYSE WLK Mon, Dec 17, 2007 9.38 9.48 9.34 9.35
843 NYSE WLK Fri, Dec 14, 2007 9.63 9.63 9.33 9.49
842 NYSE WLK Thu, Dec 13, 2007 9.85 9.99 9.56 9.71
841 NYSE WLK Wed, Dec 12, 2007 10.10 10.12 9.65 9.86
840 NYSE WLK Tue, Dec 11, 2007 10.74 10.74 9.82 9.83
839 NYSE WLK Mon, Dec 10, 2007 10.43 10.67 10.33 10.65
838 NYSE WLK Fri, Dec 7, 2007 10.16 10.56 10.01 10.34
837 NYSE WLK Thu, Dec 6, 2007 9.63 10.20 9.54 10.12
836 NYSE WLK Wed, Dec 5, 2007 9.58 9.60 9.35 9.57
835 NYSE WLK Tue, Dec 4, 2007 9.55 9.76 9.44 9.49
834 NYSE WLK Mon, Dec 3, 2007 9.81 9.91 9.66 9.72
833 NYSE WLK Fri, Nov 30, 2007 9.83 9.97 9.66 9.89
832 NYSE WLK Thu, Nov 29, 2007 9.64 9.89 9.60 9.80
831 NYSE WLK Wed, Nov 28, 2007 9.59 9.79 9.48 9.72
830 NYSE WLK Tue, Nov 27, 2007 9.48 9.66 9.36 9.53
829 NYSE WLK Mon, Nov 26, 2007 9.70 9.83 9.46 9.51
828 NYSE WLK Fri, Nov 23, 2007 9.48 9.60 9.44 9.58
827 NYSE WLK Wed, Nov 21, 2007 9.30 9.60 9.30 9.36
826 NYSE WLK Tue, Nov 20, 2007 9.65 9.70 9.31 9.52
825 NYSE WLK Mon, Nov 19, 2007 9.61 9.89 9.55 9.62
824 NYSE WLK Fri, Nov 16, 2007 10.13 10.33 9.61 9.81
823 NYSE WLK Thu, Nov 15, 2007 10.26 10.53 10.14 10.22
822 NYSE WLK Wed, Nov 14, 2007 10.85 10.85 10.44 10.48
821 NYSE WLK Tue, Nov 13, 2007 10.70 10.89 10.38 10.81
820 NYSE WLK Mon, Nov 12, 2007 10.61 10.89 10.60 10.60
819 NYSE WLK Fri, Nov 9, 2007 10.70 11.04 10.69 10.81
818 NYSE WLK Thu, Nov 8, 2007 10.48 10.92 10.34 10.86
817 NYSE WLK Wed, Nov 7, 2007 10.94 10.94 10.37 10.52
816 NYSE WLK Tue, Nov 6, 2007 11.25 11.26 10.86 11.07
815 NYSE WLK Mon, Nov 5, 2007 11.26 11.37 11.10 11.23
814 NYSE WLK Fri, Nov 2, 2007 11.85 12.18 11.38 11.44
813 NYSE WLK Thu, Nov 1, 2007 11.88 11.93 11.13 11.41
812 NYSE WLK Wed, Oct 31, 2007 11.67 12.33 11.56 12.27
811 NYSE WLK Tue, Oct 30, 2007 11.41 11.87 11.40 11.53
810 NYSE WLK Mon, Oct 29, 2007 11.50 11.67 11.41 11.51
809 NYSE WLK Fri, Oct 26, 2007 11.63 11.76 11.39 11.53
808 NYSE WLK Thu, Oct 25, 2007 11.80 11.82 11.53 11.60
807 NYSE WLK Wed, Oct 24, 2007 11.50 11.81 11.45 11.80
806 NYSE WLK Tue, Oct 23, 2007 11.73 11.73 11.50 11.61
805 NYSE WLK Mon, Oct 22, 2007 11.65 11.83 11.50 11.67
804 NYSE WLK Fri, Oct 19, 2007 12.05 12.10 11.63 11.66
803 NYSE WLK Thu, Oct 18, 2007 12.00 12.16 11.87 12.07
802 NYSE WLK Wed, Oct 17, 2007 12.62 12.69 11.92 12.05
801 NYSE WLK Tue, Oct 16, 2007 12.51 12.60 12.39 12.44
800 NYSE WLK Mon, Oct 15, 2007 12.52 12.54 12.31 12.53
799 NYSE WLK Fri, Oct 12, 2007 12.60 12.70 12.43 12.46
798 NYSE WLK Thu, Oct 11, 2007 12.50 12.80 12.43 12.53
797 NYSE WLK Wed, Oct 10, 2007 12.64 12.70 12.47 12.50
796 NYSE WLK Tue, Oct 9, 2007 12.77 12.83 12.49 12.79
795 NYSE WLK Mon, Oct 8, 2007 13.18 13.24 12.69 12.80
794 NYSE WLK Fri, Oct 5, 2007 13.04 13.33 12.97 13.19
793 NYSE WLK Thu, Oct 4, 2007 12.84 13.15 12.84 13.05
792 NYSE WLK Wed, Oct 3, 2007 12.95 12.98 12.60 12.90
791 NYSE WLK Tue, Oct 2, 2007 12.55 13.23 12.55 13.10
790 NYSE WLK Mon, Oct 1, 2007 12.62 12.75 12.50 12.55
789 NYSE WLK Fri, Sep 28, 2007 12.69 12.95 12.50 12.67
788 NYSE WLK Thu, Sep 27, 2007 12.56 12.77 12.56 12.74
787 NYSE WLK Wed, Sep 26, 2007 12.27 12.51 12.25 12.48
786 NYSE WLK Tue, Sep 25, 2007 12.39 12.40 12.19 12.27
785 NYSE WLK Mon, Sep 24, 2007 12.36 12.55 12.32 12.40
784 NYSE WLK Fri, Sep 21, 2007 12.53 12.55 12.35 12.42
783 NYSE WLK Thu, Sep 20, 2007 12.60 12.75 12.35 12.50
782 NYSE WLK Wed, Sep 19, 2007 12.78 13.07 12.63 12.67
781 NYSE WLK Tue, Sep 18, 2007 12.57 12.64 12.43 12.63
780 NYSE WLK Mon, Sep 17, 2007 12.55 12.76 12.46 12.55
779 NYSE WLK Fri, Sep 14, 2007 12.52 12.88 12.52 12.58
778 NYSE WLK Thu, Sep 13, 2007 12.74 12.80 12.42 12.63
777 NYSE WLK Wed, Sep 12, 2007 12.80 13.03 12.80 12.89
776 NYSE WLK Tue, Sep 11, 2007 12.88 13.15 12.65 12.80
775 NYSE WLK Mon, Sep 10, 2007 13.00 13.19 12.79 12.84
774 NYSE WLK Fri, Sep 7, 2007 13.16 13.26 12.91 12.99
773 NYSE WLK Thu, Sep 6, 2007 13.32 13.46 13.16 13.37
772 NYSE WLK Wed, Sep 5, 2007 13.39 13.57 13.19 13.33
771 NYSE WLK Tue, Sep 4, 2007 13.65 14.63 13.39 13.46
770 NYSE WLK Fri, Aug 31, 2007 13.17 13.54 13.08 13.53
769 NYSE WLK Thu, Aug 30, 2007 13.37 13.57 12.84 12.96
768 NYSE WLK Wed, Aug 29, 2007 13.23 13.50 13.13 13.37
767 NYSE WLK Tue, Aug 28, 2007 13.50 13.63 13.07 13.24
766 NYSE WLK Mon, Aug 27, 2007 13.92 14.07 13.52 13.57
765 NYSE WLK Fri, Aug 24, 2007 13.56 13.97 13.56 13.88
764 NYSE WLK Thu, Aug 23, 2007 13.88 14.05 13.49 13.61
763 NYSE WLK Wed, Aug 22, 2007 13.64 13.97 13.60 13.78
762 NYSE WLK Tue, Aug 21, 2007 13.57 13.77 13.19 13.48
761 NYSE WLK Mon, Aug 20, 2007 13.54 14.00 13.33 13.52
760 NYSE WLK Fri, Aug 17, 2007 13.69 14.07 13.06 13.46
759 NYSE WLK Thu, Aug 16, 2007 13.00 13.60 12.90 13.55
758 NYSE WLK Wed, Aug 15, 2007 13.43 13.71 13.02 13.09
757 NYSE WLK Tue, Aug 14, 2007 14.09 14.22 13.46 13.51
756 NYSE WLK Mon, Aug 13, 2007 14.49 15.20 14.00 14.09
755 NYSE WLK Fri, Aug 10, 2007 15.75 16.43 14.21 14.87
754 NYSE WLK Thu, Aug 9, 2007 15.50 16.34 15.12 15.65
753 NYSE WLK Wed, Aug 8, 2007 14.26 15.99 14.26 15.74
752 NYSE WLK Tue, Aug 7, 2007 13.54 14.43 13.30 14.26
751 NYSE WLK Mon, Aug 6, 2007 13.51 13.71 13.34 13.57
750 NYSE WLK Fri, Aug 3, 2007 13.25 14.12 13.13 13.51
749 NYSE WLK Thu, Aug 2, 2007 14.00 14.28 12.91 12.93
748 NYSE WLK Wed, Aug 1, 2007 12.80 13.34 12.73 13.30
747 NYSE WLK Tue, Jul 31, 2007 12.92 13.00 12.44 12.49
746 NYSE WLK Mon, Jul 30, 2007 12.45 12.82 12.26 12.77
745 NYSE WLK Fri, Jul 27, 2007 12.82 12.96 12.32 12.40
744 NYSE WLK Thu, Jul 26, 2007 12.89 12.97 12.55 12.85
743 NYSE WLK Wed, Jul 25, 2007 13.30 13.30 12.94 13.11
742 NYSE WLK Tue, Jul 24, 2007 13.60 13.60 13.01 13.18
741 NYSE WLK Mon, Jul 23, 2007 13.98 14.08 13.64 13.67
740 NYSE WLK Fri, Jul 20, 2007 14.19 14.35 13.75 13.88
739 NYSE WLK Thu, Jul 19, 2007 14.66 14.75 14.15 14.30
738 NYSE WLK Wed, Jul 18, 2007 14.73 14.81 14.42 14.62
737 NYSE WLK Tue, Jul 17, 2007 14.08 15.00 14.01 14.76
736 NYSE WLK Mon, Jul 16, 2007 13.79 13.92 13.64 13.65
735 NYSE WLK Fri, Jul 13, 2007 13.76 13.90 13.74 13.79
734 NYSE WLK Thu, Jul 12, 2007 13.65 13.95 13.65 13.85
733 NYSE WLK Wed, Jul 11, 2007 13.70 13.75 13.56 13.65
732 NYSE WLK Tue, Jul 10, 2007 13.70 13.83 13.61 13.70
731 NYSE WLK Mon, Jul 9, 2007 13.98 14.03 13.70 13.81
730 NYSE WLK Fri, Jul 6, 2007 14.13 14.18 13.87 13.98
729 NYSE WLK Thu, Jul 5, 2007 14.31 14.47 14.05 14.24
728 NYSE WLK Tue, Jul 3, 2007 14.21 14.28 14.14 14.23
727 NYSE WLK Mon, Jul 2, 2007 14.09 14.24 13.93 14.16
726 NYSE WLK Fri, Jun 29, 2007 14.16 14.26 14.02 14.06
725 NYSE WLK Thu, Jun 28, 2007 14.21 14.31 14.08 14.14
724 NYSE WLK Wed, Jun 27, 2007 14.27 14.30 13.85 14.20
723 NYSE WLK Tue, Jun 26, 2007 14.06 15.08 14.06 14.27
722 NYSE WLK Mon, Jun 25, 2007 13.99 14.17 13.87 13.92
721 NYSE WLK Fri, Jun 22, 2007 14.13 14.31 13.98 13.99
720 NYSE WLK Thu, Jun 21, 2007 13.95 14.19 13.85 14.16
719 NYSE WLK Wed, Jun 20, 2007 13.98 14.32 13.97 13.97
718 NYSE WLK Tue, Jun 19, 2007 14.25 14.30 13.86 14.02
717 NYSE WLK Mon, Jun 18, 2007 14.08 14.34 14.07 14.25
716 NYSE WLK Fri, Jun 15, 2007 14.07 14.33 14.00 14.10
715 NYSE WLK Thu, Jun 14, 2007 13.99 14.01 13.78 13.85
714 NYSE WLK Wed, Jun 13, 2007 13.78 14.02 13.70 13.89
713 NYSE WLK Tue, Jun 12, 2007 14.03 14.12 13.73 13.76
712 NYSE WLK Mon, Jun 11, 2007 14.30 14.38 14.09 14.16
711 NYSE WLK Fri, Jun 8, 2007 14.15 14.32 14.11 14.29
710 NYSE WLK Thu, Jun 7, 2007 14.39 14.39 13.94 14.02
709 NYSE WLK Wed, Jun 6, 2007 14.38 14.38 14.06 14.26
708 NYSE WLK Tue, Jun 5, 2007 14.50 14.55 14.32 14.38
707 NYSE WLK Mon, Jun 4, 2007 14.23 14.55 14.23 14.50
706 NYSE WLK Fri, Jun 1, 2007 14.15 14.29 14.11 14.27
705 NYSE WLK Thu, May 31, 2007 14.18 14.34 13.93 14.03
704 NYSE WLK Wed, May 30, 2007 13.70 14.15 13.67 14.08
703 NYSE WLK Tue, May 29, 2007 13.83 13.83 13.68 13.82
702 NYSE WLK Fri, May 25, 2007 13.83 14.00 13.73 13.83
701 NYSE WLK Thu, May 24, 2007 14.34 14.43 13.76 13.83
700 NYSE WLK Wed, May 23, 2007 14.72 14.72 14.26 14.33
699 NYSE WLK Tue, May 22, 2007 14.77 14.85 14.50 14.75
698 NYSE WLK Mon, May 21, 2007 14.04 14.95 14.04 14.77
697 NYSE WLK Fri, May 18, 2007 14.40 14.55 14.21 14.49
696 NYSE WLK Thu, May 17, 2007 14.54 14.57 14.31 14.39
695 NYSE WLK Wed, May 16, 2007 14.35 14.52 14.11 14.50
694 NYSE WLK Tue, May 15, 2007 14.51 14.55 14.28 14.31
693 NYSE WLK Mon, May 14, 2007 14.55 14.59 14.36 14.51
692 NYSE WLK Fri, May 11, 2007 14.69 14.96 14.27 14.55
691 NYSE WLK Thu, May 10, 2007 14.54 14.85 14.54 14.69
690 NYSE WLK Wed, May 9, 2007 14.53 14.53 14.26 14.50
689 NYSE WLK Tue, May 8, 2007 14.80 14.82 14.46 14.56
688 NYSE WLK Mon, May 7, 2007 15.25 15.37 14.91 14.93
687 NYSE WLK Fri, May 4, 2007 15.53 15.53 15.13 15.37
686 NYSE WLK Thu, May 3, 2007 15.17 16.54 15.17 15.53
685 NYSE WLK Wed, May 2, 2007 14.53 15.07 14.53 14.70
684 NYSE WLK Tue, May 1, 2007 14.65 14.65 14.32 14.53
683 NYSE WLK Mon, Apr 30, 2007 14.97 15.01 14.59 14.60
682 NYSE WLK Fri, Apr 27, 2007 15.65 15.65 14.93 15.03
681 NYSE WLK Thu, Apr 26, 2007 15.32 15.33 14.88 15.09
680 NYSE WLK Wed, Apr 25, 2007 14.40 15.49 14.40 15.33
679 NYSE WLK Tue, Apr 24, 2007 14.51 14.53 14.18 14.21
678 NYSE WLK Mon, Apr 23, 2007 14.55 14.62 14.34 14.39
677 NYSE WLK Fri, Apr 20, 2007 14.59 14.63 14.48 14.55
676 NYSE WLK Thu, Apr 19, 2007 14.50 14.56 14.33 14.39
675 NYSE WLK Wed, Apr 18, 2007 14.54 14.58 14.38 14.50
674 NYSE WLK Tue, Apr 17, 2007 14.39 14.54 14.35 14.54
673 NYSE WLK Mon, Apr 16, 2007 14.33 14.60 14.28 14.37
672 NYSE WLK Fri, Apr 13, 2007 13.54 13.85 13.54 13.85
671 NYSE WLK Thu, Apr 12, 2007 13.35 13.60 13.34 13.54
670 NYSE WLK Wed, Apr 11, 2007 13.65 13.70 13.32 13.35
669 NYSE WLK Tue, Apr 10, 2007 13.83 13.83 13.60 13.64
668 NYSE WLK Mon, Apr 9, 2007 13.71 13.77 13.61 13.72
667 NYSE WLK Thu, Apr 5, 2007 13.59 13.71 13.53 13.57
666 NYSE WLK Wed, Apr 4, 2007 14.11 14.33 13.63 13.72
665 NYSE WLK Tue, Apr 3, 2007 14.08 14.34 14.08 14.19
664 NYSE WLK Mon, Apr 2, 2007 13.80 14.16 13.80 14.08
663 NYSE WLK Fri, Mar 30, 2007 13.42 13.60 13.38 13.58
662 NYSE WLK Thu, Mar 29, 2007 13.38 13.41 13.24 13.38
661 NYSE WLK Wed, Mar 28, 2007 13.56 13.63 13.37 13.38
660 NYSE WLK Tue, Mar 27, 2007 13.95 14.02 13.63 13.68
659 NYSE WLK Mon, Mar 26, 2007 13.92 14.04 13.71 14.01
658 NYSE WLK Fri, Mar 23, 2007 13.74 13.91 13.70 13.85
657 NYSE WLK Thu, Mar 22, 2007 13.78 13.83 13.59 13.72
656 NYSE WLK Wed, Mar 21, 2007 13.69 13.88 13.59 13.72
655 NYSE WLK Tue, Mar 20, 2007 13.69 13.78 13.58 13.69
654 NYSE WLK Mon, Mar 19, 2007 13.68 13.85 13.60 13.63
653 NYSE WLK Fri, Mar 16, 2007 13.78 13.78 13.48 13.59
652 NYSE WLK Thu, Mar 15, 2007 13.63 13.95 13.55 13.78
651 NYSE WLK Wed, Mar 14, 2007 13.63 13.68 13.30 13.62
650 NYSE WLK Tue, Mar 13, 2007 13.85 14.02 13.63 13.63
649 NYSE WLK Mon, Mar 12, 2007 13.88 14.13 13.88 14.03
648 NYSE WLK Fri, Mar 9, 2007 13.51 14.10 13.51 13.94
647 NYSE WLK Thu, Mar 8, 2007 13.93 14.10 13.82 13.95
646 NYSE WLK Wed, Mar 7, 2007 14.18 14.25 13.78 13.80
645 NYSE WLK Tue, Mar 6, 2007 14.21 14.43 14.08 14.17
644 NYSE WLK Mon, Mar 5, 2007 14.40 14.50 14.04 14.05
643 NYSE WLK Fri, Mar 2, 2007 14.45 14.77 14.40 14.43
642 NYSE WLK Thu, Mar 1, 2007 14.73 14.77 14.18 14.71
641 NYSE WLK Wed, Feb 28, 2007 15.13 15.13 14.81 14.87
640 NYSE WLK Tue, Feb 27, 2007 15.50 15.59 14.70 14.83
639 NYSE WLK Mon, Feb 26, 2007 16.08 16.24 15.57 15.87
638 NYSE WLK Fri, Feb 23, 2007 15.95 16.00 15.61 15.77
637 NYSE WLK Thu, Feb 22, 2007 16.36 16.46 15.72 15.80
636 NYSE WLK Wed, Feb 21, 2007 16.50 16.50 16.13 16.31
635 NYSE WLK Tue, Feb 20, 2007 17.60 17.61 16.25 16.50
634 NYSE WLK Fri, Feb 16, 2007 18.26 18.57 18.22 18.56
633 NYSE WLK Thu, Feb 15, 2007 18.41 18.50 18.23 18.26
632 NYSE WLK Wed, Feb 14, 2007 17.81 18.49 17.81 18.47
631 NYSE WLK Tue, Feb 13, 2007 17.47 17.93 17.47 17.83
630 NYSE WLK Mon, Feb 12, 2007 17.45 17.57 17.27 17.47
629 NYSE WLK Fri, Feb 9, 2007 17.46 17.61 17.27 17.32
628 NYSE WLK Thu, Feb 8, 2007 17.22 17.39 17.09 17.34
627 NYSE WLK Wed, Feb 7, 2007 17.09 17.35 17.08 17.27
626 NYSE WLK Tue, Feb 6, 2007 16.99 17.15 16.94 17.09
625 NYSE WLK Mon, Feb 5, 2007 17.13 17.15 16.79 16.94
624 NYSE WLK Fri, Feb 2, 2007 17.11 17.22 16.80 17.13
623 NYSE WLK Thu, Feb 1, 2007 16.75 17.19 16.67 17.09
622 NYSE WLK Wed, Jan 31, 2007 15.80 16.59 15.74 16.59
621 NYSE WLK Tue, Jan 30, 2007 15.96 15.99 15.63 15.78
620 NYSE WLK Mon, Jan 29, 2007 15.88 16.24 15.77 15.99
619 NYSE WLK Fri, Jan 26, 2007 15.63 16.02 15.48 15.94
618 NYSE WLK Thu, Jan 25, 2007 15.82 15.90 15.54 15.66
617 NYSE WLK Wed, Jan 24, 2007 15.70 15.90 15.70 15.87
616 NYSE WLK Tue, Jan 23, 2007 15.28 15.61 15.24 15.58
615 NYSE WLK Mon, Jan 22, 2007 15.27 15.38 15.23 15.34
614 NYSE WLK Fri, Jan 19, 2007 15.52 15.63 15.19 15.26
613 NYSE WLK Thu, Jan 18, 2007 16.17 16.22 15.89 15.92
612 NYSE WLK Wed, Jan 17, 2007 15.88 16.31 15.88 16.22
611 NYSE WLK Tue, Jan 16, 2007 16.10 16.13 15.73 15.85
610 NYSE WLK Fri, Jan 12, 2007 15.84 16.38 15.81 16.14
609 NYSE WLK Thu, Jan 11, 2007 15.42 15.81 15.40 15.81
608 NYSE WLK Wed, Jan 10, 2007 15.36 15.48 15.25 15.42
607 NYSE WLK Tue, Jan 9, 2007 15.63 15.66 15.20 15.33
606 NYSE WLK Mon, Jan 8, 2007 15.31 15.70 15.14 15.57
605 NYSE WLK Fri, Jan 5, 2007 15.41 15.56 15.25 15.30
604 NYSE WLK Thu, Jan 4, 2007 15.99 15.99 15.38 15.41
603 NYSE WLK Wed, Jan 3, 2007 15.71 16.04 15.63 16.04
602 NYSE WLK Fri, Dec 29, 2006 15.87 16.00 15.69 15.69
601 NYSE WLK Thu, Dec 28, 2006 15.98 16.09 15.79 15.93
600 NYSE WLK Wed, Dec 27, 2006 15.70 16.06 15.70 16.05
599 NYSE WLK Tue, Dec 26, 2006 15.61 15.74 15.56 15.67
598 NYSE WLK Fri, Dec 22, 2006 16.08 16.08 15.51 15.61
597 NYSE WLK Thu, Dec 21, 2006 16.10 16.27 16.01 16.06
596 NYSE WLK Wed, Dec 20, 2006 15.90 16.28 15.73 16.13
595 NYSE WLK Tue, Dec 19, 2006 15.81 16.03 15.57 15.98
594 NYSE WLK Mon, Dec 18, 2006 16.45 16.47 15.83 15.84
593 NYSE WLK Fri, Dec 15, 2006 16.26 16.51 16.23 16.50
592 NYSE WLK Thu, Dec 14, 2006 16.61 16.62 16.16 16.16
591 NYSE WLK Wed, Dec 13, 2006 16.48 16.73 16.43 16.61
590 NYSE WLK Tue, Dec 12, 2006 16.45 16.48 16.25 16.43
589 NYSE WLK Mon, Dec 11, 2006 16.79 16.89 16.64 16.68
588 NYSE WLK Fri, Dec 8, 2006 16.93 17.11 16.81 16.85
587 NYSE WLK Thu, Dec 7, 2006 16.80 17.02 16.61 17.00
586 NYSE WLK Wed, Dec 6, 2006 17.20 17.20 16.63 16.80
585 NYSE WLK Tue, Dec 5, 2006 16.63 17.45 16.60 17.20
584 NYSE WLK Mon, Dec 4, 2006 16.50 16.61 16.42 16.51
583 NYSE WLK Fri, Dec 1, 2006 16.38 16.59 16.21 16.47
582 NYSE WLK Thu, Nov 30, 2006 16.82 16.96 16.38 16.38
581 NYSE WLK Wed, Nov 29, 2006 16.80 16.95 16.64 16.87
580 NYSE WLK Tue, Nov 28, 2006 16.62 16.89 16.53 16.78
579 NYSE WLK Mon, Nov 27, 2006 16.76 16.76 16.42 16.62
578 NYSE WLK Fri, Nov 24, 2006 16.88 16.93 16.70 16.76
577 NYSE WLK Wed, Nov 22, 2006 16.70 17.03 16.61 16.94
576 NYSE WLK Tue, Nov 21, 2006 16.72 16.72 16.23 16.65
575 NYSE WLK Mon, Nov 20, 2006 16.62 17.03 16.58 16.72
574 NYSE WLK Fri, Nov 17, 2006 17.58 17.58 16.54 16.62
573 NYSE WLK Thu, Nov 16, 2006 17.28 17.67 17.25 17.65
572 NYSE WLK Wed, Nov 15, 2006 17.01 17.28 16.94 17.25
571 NYSE WLK Tue, Nov 14, 2006 17.21 17.24 16.78 17.00
570 NYSE WLK Mon, Nov 13, 2006 16.94 17.25 16.83 17.25
569 NYSE WLK Fri, Nov 10, 2006 16.35 17.74 16.35 16.94
568 NYSE WLK Thu, Nov 9, 2006 16.01 16.56 15.91 16.33
567 NYSE WLK Wed, Nov 8, 2006 15.85 16.05 15.59 16.02
566 NYSE WLK Tue, Nov 7, 2006 16.03 16.19 15.81 15.93
565 NYSE WLK Mon, Nov 6, 2006 15.89 16.30 15.87 16.18
564 NYSE WLK Fri, Nov 3, 2006 16.13 16.16 15.65 15.80
563 NYSE WLK Thu, Nov 2, 2006 16.12 16.37 15.91 16.16
562 NYSE WLK Wed, Nov 1, 2006 15.88 16.38 15.88 16.12
561 NYSE WLK Tue, Oct 31, 2006 16.00 16.08 15.78 15.78
560 NYSE WLK Mon, Oct 30, 2006 15.65 16.04 15.32 15.98
559 NYSE WLK Fri, Oct 27, 2006 16.95 16.95 15.78 15.80
558 NYSE WLK Thu, Oct 26, 2006 16.51 17.00 16.49 16.99
557 NYSE WLK Wed, Oct 25, 2006 16.22 16.49 16.22 16.43
556 NYSE WLK Tue, Oct 24, 2006 16.21 16.45 16.09 16.22
555 NYSE WLK Mon, Oct 23, 2006 16.15 16.46 16.15 16.30
554 NYSE WLK Fri, Oct 20, 2006 16.55 16.58 16.19 16.33
553 NYSE WLK Thu, Oct 19, 2006 16.14 16.60 16.05 16.57
552 NYSE WLK Wed, Oct 18, 2006 17.06 17.21 16.01 16.32
551 NYSE WLK Tue, Oct 17, 2006 17.28 17.31 17.01 17.21
550 NYSE WLK Mon, Oct 16, 2006 16.96 17.30 16.96 17.28
549 NYSE WLK Fri, Oct 13, 2006 16.89 17.14 16.76 16.94
548 NYSE WLK Thu, Oct 12, 2006 16.84 16.95 16.69 16.88
547 NYSE WLK Wed, Oct 11, 2006 16.96 17.07 16.70 16.79
546 NYSE WLK Tue, Oct 10, 2006 16.25 17.23 16.25 16.95
545 NYSE WLK Mon, Oct 9, 2006 16.15 16.23 16.00 16.15
544 NYSE WLK Fri, Oct 6, 2006 16.36 16.38 16.14 16.19
543 NYSE WLK Thu, Oct 5, 2006 16.02 16.37 15.90 16.36
542 NYSE WLK Wed, Oct 4, 2006 15.61 16.04 15.61 16.02
541 NYSE WLK Tue, Oct 3, 2006 15.55 15.79 15.38 15.57
540 NYSE WLK Mon, Oct 2, 2006 15.94 15.95 15.53 15.63
539 NYSE WLK Fri, Sep 29, 2006 16.04 16.15 15.96 16.01
538 NYSE WLK Thu, Sep 28, 2006 16.23 16.26 15.95 16.06
537 NYSE WLK Wed, Sep 27, 2006 16.10 16.50 16.08 16.30
536 NYSE WLK Tue, Sep 26, 2006 15.80 16.30 15.63 16.21
535 NYSE WLK Mon, Sep 25, 2006 16.10 16.19 15.80 15.82
534 NYSE WLK Fri, Sep 22, 2006 16.25 16.28 16.03 16.07
533 NYSE WLK Thu, Sep 21, 2006 16.64 16.64 16.18 16.28
532 NYSE WLK Wed, Sep 20, 2006 16.40 16.80 16.33 16.65
531 NYSE WLK Tue, Sep 19, 2006 15.98 16.16 15.81 16.14
530 NYSE WLK Mon, Sep 18, 2006 15.83 16.10 15.68 15.98
529 NYSE WLK Fri, Sep 15, 2006 15.80 15.91 15.73 15.82
528 NYSE WLK Thu, Sep 14, 2006 15.16 16.00 15.12 15.70
527 NYSE WLK Wed, Sep 13, 2006 14.89 15.22 14.89 15.16
526 NYSE WLK Tue, Sep 12, 2006 14.73 15.11 14.56 14.89
525 NYSE WLK Mon, Sep 11, 2006 15.05 15.06 14.60 14.73
524 NYSE WLK Fri, Sep 8, 2006 14.74 15.12 14.60 15.09
523 NYSE WLK Thu, Sep 7, 2006 14.78 14.88 14.55 14.75
522 NYSE WLK Wed, Sep 6, 2006 15.04 15.04 14.73 14.80
521 NYSE WLK Tue, Sep 5, 2006 15.11 15.22 14.89 15.07
520 NYSE WLK Fri, Sep 1, 2006 14.92 15.17 14.88 15.14
519 NYSE WLK Thu, Aug 31, 2006 14.70 14.98 14.67 14.98
518 NYSE WLK Wed, Aug 30, 2006 14.53 14.70 14.38 14.68
517 NYSE WLK Tue, Aug 29, 2006 14.28 14.58 14.18 14.58
516 NYSE WLK Mon, Aug 28, 2006 14.25 14.40 14.14 14.26
515 NYSE WLK Fri, Aug 25, 2006 14.16 14.34 14.01 14.32
514 NYSE WLK Thu, Aug 24, 2006 14.28 14.32 13.88 14.15
513 NYSE WLK Wed, Aug 23, 2006 14.86 14.94 14.63 14.66
512 NYSE WLK Tue, Aug 22, 2006 14.70 15.00 14.70 14.87
511 NYSE WLK Mon, Aug 21, 2006 15.25 15.26 14.82 15.07
510 NYSE WLK Fri, Aug 18, 2006 15.25 15.50 14.96 15.33
509 NYSE WLK Thu, Aug 17, 2006 15.26 15.35 15.09 15.24
508 NYSE WLK Wed, Aug 16, 2006 15.00 15.44 15.00 15.34
507 NYSE WLK Tue, Aug 15, 2006 15.27 15.36 14.89 14.99
506 NYSE WLK Mon, Aug 14, 2006 15.06 15.41 14.99 15.15
505 NYSE WLK Fri, Aug 11, 2006 14.99 15.12 14.91 15.02
504 NYSE WLK Thu, Aug 10, 2006 14.81 15.03 14.55 15.03
503 NYSE WLK Wed, Aug 9, 2006 15.25 15.45 14.81 14.81
502 NYSE WLK Tue, Aug 8, 2006 15.20 15.52 15.16 15.21
501 NYSE WLK Mon, Aug 7, 2006 14.98 15.20 14.88 15.13
500 NYSE WLK Fri, Aug 4, 2006 14.69 15.24 14.69 15.01
499 NYSE WLK Thu, Aug 3, 2006 14.28 15.04 14.21 14.57
498 NYSE WLK Wed, Aug 2, 2006 13.73 14.07 13.63 14.00
497 NYSE WLK Tue, Aug 1, 2006 13.68 13.76 13.51 13.73
496 NYSE WLK Mon, Jul 31, 2006 13.57 13.73 13.50 13.70
495 NYSE WLK Fri, Jul 28, 2006 13.22 13.75 13.22 13.60
494 NYSE WLK Thu, Jul 27, 2006 13.88 13.90 13.13 13.19
493 NYSE WLK Wed, Jul 26, 2006 13.91 14.00 13.65 13.88
492 NYSE WLK Tue, Jul 25, 2006 13.70 14.05 13.59 13.90
491 NYSE WLK Mon, Jul 24, 2006 13.48 13.75 13.38 13.72
490 NYSE WLK Fri, Jul 21, 2006 13.40 13.48 13.14 13.47
489 NYSE WLK Thu, Jul 20, 2006 13.88 13.96 13.41 13.42
488 NYSE WLK Wed, Jul 19, 2006 13.58 14.12 13.53 13.88
487 NYSE WLK Tue, Jul 18, 2006 13.72 13.72 13.33 13.58
486 NYSE WLK Mon, Jul 17, 2006 13.80 13.83 13.38 13.68
485 NYSE WLK Fri, Jul 14, 2006 13.84 13.96 13.57 13.80
484 NYSE WLK Thu, Jul 13, 2006 14.27 14.30 13.73 13.83
483 NYSE WLK Wed, Jul 12, 2006 14.49 14.69 14.25 14.30
482 NYSE WLK Tue, Jul 11, 2006 14.50 14.55 14.27 14.47
481 NYSE WLK Mon, Jul 10, 2006 14.59 14.86 14.40 14.50
480 NYSE WLK Fri, Jul 7, 2006 14.80 14.83 14.43 14.58
479 NYSE WLK Thu, Jul 6, 2006 15.15 15.49 14.79 14.80
478 NYSE WLK Wed, Jul 5, 2006 15.22 15.22 14.86 15.19
477 NYSE WLK Mon, Jul 3, 2006 14.95 15.31 14.76 15.29
476 NYSE WLK Fri, Jun 30, 2006 14.72 14.90 14.33 14.90
475 NYSE WLK Thu, Jun 29, 2006 13.90 14.71 13.81 14.60
474 NYSE WLK Wed, Jun 28, 2006 14.07 14.10 13.68 13.85
473 NYSE WLK Tue, Jun 27, 2006 14.03 14.29 13.90 14.11
472 NYSE WLK Mon, Jun 26, 2006 13.78 14.13 13.76 14.00
471 NYSE WLK Fri, Jun 23, 2006 13.60 13.89 13.48 13.72
470 NYSE WLK Thu, Jun 22, 2006 13.54 13.90 13.45 13.69
469 NYSE WLK Wed, Jun 21, 2006 13.48 13.73 13.46 13.54
468 NYSE WLK Tue, Jun 20, 2006 13.28 13.55 13.27 13.45
467 NYSE WLK Mon, Jun 19, 2006 13.25 13.53 13.22 13.29
466 NYSE WLK Fri, Jun 16, 2006 13.79 13.88 13.41 13.48
465 NYSE WLK Thu, Jun 15, 2006 13.65 13.97 13.56 13.79
464 NYSE WLK Wed, Jun 14, 2006 13.35 13.71 13.33 13.59
463 NYSE WLK Tue, Jun 13, 2006 13.55 13.82 13.33 13.42
462 NYSE WLK Mon, Jun 12, 2006 13.65 14.04 13.58 13.60
461 NYSE WLK Fri, Jun 9, 2006 14.33 14.33 13.55 13.58
460 NYSE WLK Thu, Jun 8, 2006 13.85 13.92 13.19 13.88
459 NYSE WLK Wed, Jun 7, 2006 14.50 14.51 13.79 13.87
458 NYSE WLK Tue, Jun 6, 2006 15.00 15.06 14.63 14.79
457 NYSE WLK Mon, Jun 5, 2006 15.45 15.63 14.93 14.94
456 NYSE WLK Fri, Jun 2, 2006 15.63 15.98 15.38 15.45
455 NYSE WLK Thu, Jun 1, 2006 15.68 15.95 15.42 15.63
454 NYSE WLK Wed, May 31, 2006 15.23 15.75 15.23 15.61
453 NYSE WLK Tue, May 30, 2006 15.73 15.73 15.13 15.18
452 NYSE WLK Fri, May 26, 2006 15.93 16.17 15.70 15.73
451 NYSE WLK Thu, May 25, 2006 15.35 16.01 15.35 15.92
450 NYSE WLK Wed, May 24, 2006 15.17 15.47 14.83 15.22
449 NYSE WLK Tue, May 23, 2006 15.49 15.77 15.16 15.18
448 NYSE WLK Mon, May 22, 2006 15.59 15.69 15.13 15.41
447 NYSE WLK Fri, May 19, 2006 15.54 16.00 15.53 15.69
446 NYSE WLK Thu, May 18, 2006 15.82 16.20 15.51 15.56
445 NYSE WLK Wed, May 17, 2006 16.09 16.09 15.66 15.77
444 NYSE WLK Tue, May 16, 2006 15.98 16.28 15.86 16.09
443 NYSE WLK Mon, May 15, 2006 16.20 16.35 15.95 16.01
442 NYSE WLK Fri, May 12, 2006 16.36 16.44 15.92 16.30
441 NYSE WLK Thu, May 11, 2006 16.38 16.58 16.00 16.44
440 NYSE WLK Wed, May 10, 2006 17.02 17.03 16.02 16.41
439 NYSE WLK Tue, May 9, 2006 17.08 17.36 16.86 17.10
438 NYSE WLK Mon, May 8, 2006 15.92 16.57 15.92 16.33
437 NYSE WLK Fri, May 5, 2006 16.20 16.20 15.70 15.88
436 NYSE WLK Thu, May 4, 2006 16.16 16.38 16.07 16.30
435 NYSE WLK Wed, May 3, 2006 15.78 16.20 15.69 16.15
434 NYSE WLK Tue, May 2, 2006 15.88 15.95 15.66 15.80
433 NYSE WLK Mon, May 1, 2006 15.33 15.83 15.30 15.62
432 NYSE WLK Fri, Apr 28, 2006 15.13 15.23 14.91 15.18
431 NYSE WLK Thu, Apr 27, 2006 15.40 15.50 15.08 15.13
430 NYSE WLK Wed, Apr 26, 2006 16.38 16.48 15.56 15.63
429 NYSE WLK Tue, Apr 25, 2006 15.96 16.74 15.96 16.43
428 NYSE WLK Mon, Apr 24, 2006 15.65 16.07 15.37 15.96
427 NYSE WLK Fri, Apr 21, 2006 15.80 15.86 15.46 15.68
426 NYSE WLK Thu, Apr 20, 2006 16.55 16.56 15.51 15.80
425 NYSE WLK Wed, Apr 19, 2006 16.70 17.36 16.64 17.28
424 NYSE WLK Tue, Apr 18, 2006 16.15 16.53 16.15 16.49
423 NYSE WLK Mon, Apr 17, 2006 16.14 16.43 15.88 16.11
422 NYSE WLK Thu, Apr 13, 2006 16.26 16.33 16.01 16.12
421 NYSE WLK Wed, Apr 12, 2006 16.06 16.39 15.99 16.25
420 NYSE WLK Tue, Apr 11, 2006 16.47 16.48 15.99 16.10
419 NYSE WLK Mon, Apr 10, 2006 16.20 16.44 16.20 16.42
418 NYSE WLK Fri, Apr 7, 2006 16.19 16.43 16.13 16.20
417 NYSE WLK Thu, Apr 6, 2006 16.72 16.85 16.02 16.13
416 NYSE WLK Wed, Apr 5, 2006 17.39 17.39 16.43 16.80
415 NYSE WLK Tue, Apr 4, 2006 17.11 17.49 17.11 17.39
414 NYSE WLK Mon, Apr 3, 2006 17.28 17.45 17.04 17.11
413 NYSE WLK Fri, Mar 31, 2006 17.63 17.63 17.04 17.28
412 NYSE WLK Thu, Mar 30, 2006 17.23 17.75 17.21 17.61
411 NYSE WLK Wed, Mar 29, 2006 16.52 17.27 16.52 17.14
410 NYSE WLK Tue, Mar 28, 2006 16.54 16.78 16.43 16.54
409 NYSE WLK Mon, Mar 27, 2006 16.99 17.06 16.25 16.53
408 NYSE WLK Fri, Mar 24, 2006 16.86 17.52 16.75 17.03
407 NYSE WLK Thu, Mar 23, 2006 16.86 17.15 16.70 16.89
406 NYSE WLK Wed, Mar 22, 2006 16.83 17.42 16.31 16.86
405 NYSE WLK Tue, Mar 21, 2006 18.03 18.25 17.87 17.90
404 NYSE WLK Mon, Mar 20, 2006 18.28 18.67 18.07 18.07
403 NYSE WLK Fri, Mar 17, 2006 18.25 18.28 18.15 18.25
402 NYSE WLK Thu, Mar 16, 2006 18.37 18.53 18.03 18.20
401 NYSE WLK Wed, Mar 15, 2006 17.58 18.52 17.58 18.38
400 NYSE WLK Tue, Mar 14, 2006 16.95 17.60 16.89 17.51
399 NYSE WLK Mon, Mar 13, 2006 17.50 17.53 16.96 17.01
398 NYSE WLK Fri, Mar 10, 2006 17.31 17.70 17.28 17.51
397 NYSE WLK Thu, Mar 9, 2006 17.33 17.49 17.25 17.34
396 NYSE WLK Wed, Mar 8, 2006 18.00 18.16 17.18 17.33
395 NYSE WLK Tue, Mar 7, 2006 17.70 18.60 17.70 18.00
394 NYSE WLK Mon, Mar 6, 2006 17.07 17.75 17.07 17.73
393 NYSE WLK Fri, Mar 3, 2006 17.46 17.78 17.39 17.55
392 NYSE WLK Thu, Mar 2, 2006 17.38 17.55 17.28 17.49
391 NYSE WLK Wed, Mar 1, 2006 17.20 17.50 17.16 17.42
390 NYSE WLK Tue, Feb 28, 2006 17.48 17.53 17.07 17.16
389 NYSE WLK Mon, Feb 27, 2006 17.30 17.49 17.18 17.46
388 NYSE WLK Fri, Feb 24, 2006 17.37 17.55 17.22 17.30
387 NYSE WLK Thu, Feb 23, 2006 17.74 17.74 17.30 17.38
386 NYSE WLK Wed, Feb 22, 2006 17.10 17.74 17.09 17.74
385 NYSE WLK Tue, Feb 21, 2006 16.95 17.50 16.81 16.93
384 NYSE WLK Fri, Feb 17, 2006 16.58 16.96 16.48 16.65
383 NYSE WLK Thu, Feb 16, 2006 16.53 16.69 16.46 16.59
382 NYSE WLK Wed, Feb 15, 2006 16.25 16.64 16.16 16.52
381 NYSE WLK Tue, Feb 14, 2006 15.63 16.38 15.54 16.25
380 NYSE WLK Mon, Feb 13, 2006 16.04 16.11 15.58 15.63
379 NYSE WLK Fri, Feb 10, 2006 16.19 16.19 15.79 16.00
378 NYSE WLK Thu, Feb 9, 2006 15.95 16.45 15.95 16.24
377 NYSE WLK Wed, Feb 8, 2006 15.55 16.09 15.43 15.94
376 NYSE WLK Tue, Feb 7, 2006 15.75 15.84 15.34 15.53
375 NYSE WLK Mon, Feb 6, 2006 15.48 15.70 15.40 15.68
374 NYSE WLK Fri, Feb 3, 2006 15.89 15.89 15.25 15.48
373 NYSE WLK Thu, Feb 2, 2006 16.03 16.07 15.66 15.91
372 NYSE WLK Wed, Feb 1, 2006 15.71 16.15 15.65 16.05
371 NYSE WLK Tue, Jan 31, 2006 16.05 16.05 15.68 15.70
370 NYSE WLK Mon, Jan 30, 2006 15.63 16.50 15.58 15.83
369 NYSE WLK Fri, Jan 27, 2006 15.28 15.68 15.24 15.63
368 NYSE WLK Thu, Jan 26, 2006 15.40 15.40 15.26 15.26
367 NYSE WLK Wed, Jan 25, 2006 15.62 15.75 15.31 15.40
366 NYSE WLK Tue, Jan 24, 2006 15.25 15.62 15.24 15.62
365 NYSE WLK Mon, Jan 23, 2006 15.43 15.58 15.18 15.25
364 NYSE WLK Fri, Jan 20, 2006 15.48 15.57 15.30 15.38
363 NYSE WLK Thu, Jan 19, 2006 14.90 15.56 14.80 15.45
362 NYSE WLK Wed, Jan 18, 2006 14.98 15.14 14.76 14.90
361 NYSE WLK Tue, Jan 17, 2006 15.30 15.30 14.80 15.04
360 NYSE WLK Fri, Jan 13, 2006 15.28 15.41 15.04 15.35
359 NYSE WLK Thu, Jan 12, 2006 15.45 15.50 15.23 15.23
358 NYSE WLK Wed, Jan 11, 2006 15.40 15.48 15.11 15.48
357 NYSE WLK Tue, Jan 10, 2006 15.25 15.49 15.01 15.40
356 NYSE WLK Mon, Jan 9, 2006 15.25 15.50 15.16 15.25
355 NYSE WLK Fri, Jan 6, 2006 15.13 15.36 14.70 15.30
354 NYSE WLK Thu, Jan 5, 2006 14.68 15.03 14.59 15.03
353 NYSE WLK Wed, Jan 4, 2006 14.52 14.74 14.30 14.66
352 NYSE WLK Tue, Jan 3, 2006 14.45 14.56 13.87 14.52
351 NYSE WLK Fri, Dec 30, 2005 14.58 14.58 14.41 14.41
350 NYSE WLK Thu, Dec 29, 2005 14.55 14.86 14.53 14.58
349 NYSE WLK Wed, Dec 28, 2005 14.55 14.59 14.41 14.58
348 NYSE WLK Tue, Dec 27, 2005 14.86 14.98 14.58 14.58
347 NYSE WLK Fri, Dec 23, 2005 14.66 14.91 14.65 14.80
346 NYSE WLK Thu, Dec 22, 2005 14.58 14.73 14.50 14.65
345 NYSE WLK Wed, Dec 21, 2005 14.63 14.80 14.47 14.53
344 NYSE WLK Tue, Dec 20, 2005 15.06 15.07 14.58 14.59
343 NYSE WLK Mon, Dec 19, 2005 15.17 15.38 15.06 15.07
342 NYSE WLK Fri, Dec 16, 2005 15.11 15.38 15.08 15.17
341 NYSE WLK Thu, Dec 15, 2005 15.22 15.33 14.98 15.06
340 NYSE WLK Wed, Dec 14, 2005 15.03 15.35 14.90 15.20
339 NYSE WLK Tue, Dec 13, 2005 15.00 15.45 14.88 15.03
338 NYSE WLK Mon, Dec 12, 2005 14.96 15.12 14.82 15.00
337 NYSE WLK Fri, Dec 9, 2005 15.05 15.14 14.89 14.97
336 NYSE WLK Thu, Dec 8, 2005 15.21 15.40 14.95 15.03
335 NYSE WLK Wed, Dec 7, 2005 15.19 15.24 14.95 15.24
334 NYSE WLK Tue, Dec 6, 2005 14.59 15.32 14.43 15.10
333 NYSE WLK Mon, Dec 5, 2005 13.99 14.61 13.53 14.49
332 NYSE WLK Fri, Dec 2, 2005 13.93 13.96 13.68 13.89
331 NYSE WLK Thu, Dec 1, 2005 14.08 14.25 13.93 13.98
330 NYSE WLK Wed, Nov 30, 2005 14.27 14.38 14.01 14.01
329 NYSE WLK Tue, Nov 29, 2005 14.30 14.53 14.18 14.26
328 NYSE WLK Mon, Nov 28, 2005 14.45 14.50 14.22 14.25
327 NYSE WLK Fri, Nov 25, 2005 14.44 14.57 14.40 14.43
326 NYSE WLK Wed, Nov 23, 2005 15.07 15.07 14.24 14.34
325 NYSE WLK Tue, Nov 22, 2005 14.87 15.19 14.80 15.09
324 NYSE WLK Mon, Nov 21, 2005 14.95 15.12 14.76 14.90
323 NYSE WLK Fri, Nov 18, 2005 15.15 15.15 14.89 15.00
322 NYSE WLK Thu, Nov 17, 2005 14.56 15.13 14.56 15.07
321 NYSE WLK Wed, Nov 16, 2005 14.81 14.95 14.35 14.52
320 NYSE WLK Tue, Nov 15, 2005 14.84 15.10 14.74 14.78
319 NYSE WLK Mon, Nov 14, 2005 15.13 15.23 14.77 14.83
318 NYSE WLK Fri, Nov 11, 2005 14.82 15.19 14.82 15.13
317 NYSE WLK Thu, Nov 10, 2005 14.40 14.89 14.22 14.77
316 NYSE WLK Wed, Nov 9, 2005 14.52 14.52 14.34 14.43
315 NYSE WLK Tue, Nov 8, 2005 14.68 14.84 14.50 14.50
314 NYSE WLK Mon, Nov 7, 2005 14.83 15.23 14.83 15.06
313 NYSE WLK Fri, Nov 4, 2005 14.70 15.15 14.63 14.73
312 NYSE WLK Thu, Nov 3, 2005 15.63 15.80 14.58 14.69
311 NYSE WLK Wed, Nov 2, 2005 14.78 15.26 14.76 15.25
310 NYSE WLK Tue, Nov 1, 2005 14.55 14.83 14.45 14.71
309 NYSE WLK Mon, Oct 31, 2005 14.16 14.76 14.15 14.55
308 NYSE WLK Fri, Oct 28, 2005 14.01 14.17 13.97 14.14
307 NYSE WLK Thu, Oct 27, 2005 13.80 14.08 13.75 13.92
306 NYSE WLK Wed, Oct 26, 2005 13.81 14.35 13.76 13.84
305 NYSE WLK Tue, Oct 25, 2005 13.93 14.02 13.58 13.86
304 NYSE WLK Mon, Oct 24, 2005 13.74 14.10 13.74 14.00
303 NYSE WLK Fri, Oct 21, 2005 13.79 14.02 13.65 13.74
302 NYSE WLK Thu, Oct 20, 2005 13.28 13.95 13.28 13.77
301 NYSE WLK Wed, Oct 19, 2005 13.33 13.48 13.17 13.29
300 NYSE WLK Tue, Oct 18, 2005 13.29 13.39 13.20 13.33
299 NYSE WLK Mon, Oct 17, 2005 13.40 13.49 13.13 13.25
298 NYSE WLK Fri, Oct 14, 2005 13.50 13.50 12.98 13.43
297 NYSE WLK Thu, Oct 13, 2005 13.49 13.53 13.40 13.42
296 NYSE WLK Wed, Oct 12, 2005 13.50 13.54 13.30 13.42
295 NYSE WLK Tue, Oct 11, 2005 13.51 13.67 13.43 13.50
294 NYSE WLK Mon, Oct 10, 2005 13.90 13.92 13.15 13.50
293 NYSE WLK Fri, Oct 7, 2005 13.38 14.23 13.38 13.88
292 NYSE WLK Thu, Oct 6, 2005 13.15 13.49 12.97 13.08
291 NYSE WLK Wed, Oct 5, 2005 13.55 13.65 13.11 13.14
290 NYSE WLK Tue, Oct 4, 2005 13.55 13.90 13.55 13.62
289 NYSE WLK Mon, Oct 3, 2005 13.59 13.81 13.50 13.55
288 NYSE WLK Fri, Sep 30, 2005 13.10 13.60 13.10 13.54
287 NYSE WLK Thu, Sep 29, 2005 13.30 13.32 12.68 13.14
286 NYSE WLK Wed, Sep 28, 2005 13.68 13.70 13.26 13.30
285 NYSE WLK Tue, Sep 27, 2005 14.00 14.01 13.45 13.63
284 NYSE WLK Mon, Sep 26, 2005 13.75 14.23 13.71 13.97
283 NYSE WLK Fri, Sep 23, 2005 13.08 13.90 13.00 13.60
282 NYSE WLK Thu, Sep 22, 2005 13.28 13.29 12.92 13.14
281 NYSE WLK Wed, Sep 21, 2005 13.40 13.40 13.13 13.28
280 NYSE WLK Tue, Sep 20, 2005 13.91 13.93 13.25 13.42
279 NYSE WLK Mon, Sep 19, 2005 13.85 14.00 13.78 13.93
278 NYSE WLK Fri, Sep 16, 2005 13.80 14.00 13.76 13.88
277 NYSE WLK Thu, Sep 15, 2005 13.78 13.79 13.45 13.73
276 NYSE WLK Wed, Sep 14, 2005 14.25 14.28 13.82 13.85
275 NYSE WLK Tue, Sep 13, 2005 14.24 14.48 14.07 14.22
274 NYSE WLK Mon, Sep 12, 2005 14.55 14.55 14.27 14.32
273 NYSE WLK Fri, Sep 9, 2005 14.78 14.85 14.48 14.66
272 NYSE WLK Thu, Sep 8, 2005 14.14 14.98 14.13 14.77
271 NYSE WLK Wed, Sep 7, 2005 13.98 14.25 13.88 14.15
270 NYSE WLK Tue, Sep 6, 2005 13.93 14.17 13.88 14.03
269 NYSE WLK Fri, Sep 2, 2005 14.20 14.25 13.85 13.96
268 NYSE WLK Thu, Sep 1, 2005 13.70 14.52 13.67 14.20
267 NYSE WLK Wed, Aug 31, 2005 13.48 13.78 13.44 13.75
266 NYSE WLK Tue, Aug 30, 2005 13.55 13.78 13.36 13.48
265 NYSE WLK Mon, Aug 29, 2005 12.78 13.69 12.78 13.60
264 NYSE WLK Fri, Aug 26, 2005 13.41 13.64 13.11 13.47
263 NYSE WLK Thu, Aug 25, 2005 14.37 14.38 13.32 13.43
262 NYSE WLK Wed, Aug 24, 2005 14.79 14.81 14.34 14.38
261 NYSE WLK Tue, Aug 23, 2005 15.00 15.00 14.58 14.79
260 NYSE WLK Mon, Aug 22, 2005 15.00 15.08 14.85 14.99
259 NYSE WLK Fri, Aug 19, 2005 15.16 15.18 14.94 15.01
258 NYSE WLK Thu, Aug 18, 2005 15.20 15.35 15.00 15.17
257 NYSE WLK Wed, Aug 17, 2005 15.15 15.46 15.06 15.24
256 NYSE WLK Tue, Aug 16, 2005 15.95 15.96 15.40 15.50
255 NYSE WLK Mon, Aug 15, 2005 16.35 16.42 16.02 16.24
254 NYSE WLK Fri, Aug 12, 2005 16.43 16.43 16.10 16.29
253 NYSE WLK Thu, Aug 11, 2005 15.60 16.49 15.58 16.43
252 NYSE WLK Wed, Aug 10, 2005 15.93 16.05 15.53 15.56
251 NYSE WLK Tue, Aug 9, 2005 15.88 15.93 15.81 15.89
250 NYSE WLK Mon, Aug 8, 2005 15.85 15.91 15.80 15.83
249 NYSE WLK Fri, Aug 5, 2005 15.75 15.93 15.73 15.88
248 NYSE WLK Thu, Aug 4, 2005 15.95 16.15 15.53 15.75
247 NYSE WLK Wed, Aug 3, 2005 15.88 16.25 15.50 16.00
246 NYSE WLK Tue, Aug 2, 2005 15.80 16.16 15.72 15.88
245 NYSE WLK Mon, Aug 1, 2005 15.86 16.00 15.79 15.79
244 NYSE WLK Fri, Jul 29, 2005 16.35 16.44 15.72 15.81
243 NYSE WLK Thu, Jul 28, 2005 16.28 16.52 16.23 16.38
242 NYSE WLK Wed, Jul 27, 2005 16.49 16.60 16.22 16.34
241 NYSE WLK Tue, Jul 26, 2005 16.22 16.60 15.70 16.49
240 NYSE WLK Mon, Jul 25, 2005 16.38 16.38 16.10 16.24
239 NYSE WLK Fri, Jul 22, 2005 16.15 16.43 16.06 16.40
238 NYSE WLK Thu, Jul 21, 2005 16.35 16.46 16.01 16.18
237 NYSE WLK Wed, Jul 20, 2005 15.94 16.48 15.94 16.42
236 NYSE WLK Tue, Jul 19, 2005 15.38 16.40 15.38 15.94
235 NYSE WLK Mon, Jul 18, 2005 15.03 15.06 14.66 14.81
234 NYSE WLK Fri, Jul 15, 2005 15.00 15.15 14.93 15.01
233 NYSE WLK Thu, Jul 14, 2005 15.25 15.30 14.95 15.05
232 NYSE WLK Wed, Jul 13, 2005 15.35 15.37 14.96 15.04
231 NYSE WLK Tue, Jul 12, 2005 15.08 15.57 14.96 15.30
230 NYSE WLK Mon, Jul 11, 2005 14.25 15.08 14.25 15.08
229 NYSE WLK Fri, Jul 8, 2005 13.36 14.25 13.36 14.19
228 NYSE WLK Thu, Jul 7, 2005 13.05 13.56 12.73 13.35
227 NYSE WLK Wed, Jul 6, 2005 12.38 13.24 12.35 13.10
226 NYSE WLK Tue, Jul 5, 2005 12.25 12.41 12.21 12.38
225 NYSE WLK Fri, Jul 1, 2005 12.23 12.30 12.17 12.28
224 NYSE WLK Thu, Jun 30, 2005 12.51 12.55 12.20 12.25
223 NYSE WLK Wed, Jun 29, 2005 12.50 12.55 12.41 12.51
222 NYSE WLK Tue, Jun 28, 2005 12.48 12.61 12.43 12.48
221 NYSE WLK Mon, Jun 27, 2005 12.58 12.61 12.36 12.36
220 NYSE WLK Fri, Jun 24, 2005 12.44 12.60 12.32 12.53
219 NYSE WLK Thu, Jun 23, 2005 12.39 12.63 12.39 12.47
218 NYSE WLK Wed, Jun 22, 2005 12.33 12.38 12.02 12.33
217 NYSE WLK Tue, Jun 21, 2005 12.78 12.80 12.24 12.29
216 NYSE WLK Mon, Jun 20, 2005 12.80 13.01 12.65 12.85
215 NYSE WLK Fri, Jun 17, 2005 12.88 12.92 12.48 12.79
214 NYSE WLK Thu, Jun 16, 2005 12.90 13.05 12.75 12.81
213 NYSE WLK Wed, Jun 15, 2005 12.78 12.90 12.53 12.88
212 NYSE WLK Tue, Jun 14, 2005 12.28 12.82 12.27 12.82
211 NYSE WLK Mon, Jun 13, 2005 12.26 12.36 12.13 12.31
210 NYSE WLK Fri, Jun 10, 2005 12.25 12.51 12.08 12.26
209 NYSE WLK Thu, Jun 9, 2005 12.32 12.44 12.08 12.30
208 NYSE WLK Wed, Jun 8, 2005 12.44 12.70 12.20 12.32
207 NYSE WLK Tue, Jun 7, 2005 12.48 12.64 12.38 12.43
206 NYSE WLK Mon, Jun 6, 2005 12.20 12.68 12.20 12.42
205 NYSE WLK Fri, Jun 3, 2005 12.00 12.24 12.00 12.20
204 NYSE WLK Thu, Jun 2, 2005 11.99 12.12 11.63 12.03
203 NYSE WLK Wed, Jun 1, 2005 12.03 12.50 11.91 12.06
202 NYSE WLK Tue, May 31, 2005 12.20 12.24 11.96 11.99
201 NYSE WLK Fri, May 27, 2005 12.25 12.35 12.11 12.24
200 NYSE WLK Thu, May 26, 2005 12.38 12.43 12.13 12.28
199 NYSE WLK Wed, May 25, 2005 12.38 12.38 12.14 12.29
198 NYSE WLK Tue, May 24, 2005 12.38 12.55 12.33 12.42
197 NYSE WLK Mon, May 23, 2005 12.62 12.63 12.11 12.43
196 NYSE WLK Fri, May 20, 2005 12.65 12.85 12.45 12.56
195 NYSE WLK Thu, May 19, 2005 12.16 12.73 12.15 12.64
194 NYSE WLK Wed, May 18, 2005 11.50 12.13 11.31 12.03
193 NYSE WLK Tue, May 17, 2005 11.13 11.63 11.01 11.41
192 NYSE WLK Mon, May 16, 2005 11.60 11.67 11.03 11.15
191 NYSE WLK Fri, May 13, 2005 12.53 12.60 11.36 11.55
190 NYSE WLK Thu, May 12, 2005 12.95 12.95 12.42 12.45
189 NYSE WLK Wed, May 11, 2005 13.02 13.12 12.83 12.98
188 NYSE WLK Tue, May 10, 2005 13.28 13.35 13.11 13.12
187 NYSE WLK Mon, May 9, 2005 13.98 13.98 13.20 13.30
186 NYSE WLK Fri, May 6, 2005 14.11 14.13 13.90 13.95
185 NYSE WLK Thu, May 5, 2005 14.16 14.34 14.06 14.07
184 NYSE WLK Wed, May 4, 2005 13.50 14.14 13.00 14.05
183 NYSE WLK Tue, May 3, 2005 13.21 13.48 13.15 13.48
182 NYSE WLK Mon, May 2, 2005 13.08 13.35 13.08 13.27
181 NYSE WLK Fri, Apr 29, 2005 13.08 13.32 12.88 13.13
180 NYSE WLK Thu, Apr 28, 2005 13.55 13.64 12.95 12.95
179 NYSE WLK Wed, Apr 27, 2005 13.78 13.79 13.29 13.50
178 NYSE WLK Tue, Apr 26, 2005 13.90 14.31 13.77 13.78
177 NYSE WLK Mon, Apr 25, 2005 13.72 14.04 13.68 14.02
176 NYSE WLK Fri, Apr 22, 2005 13.71 13.98 13.62 13.70
175 NYSE WLK Thu, Apr 21, 2005 13.70 14.08 13.60 13.71
174 NYSE WLK Wed, Apr 20, 2005 14.29 14.29 13.47 13.55
173 NYSE WLK Tue, Apr 19, 2005 13.93 14.27 13.92 14.24
172 NYSE WLK Mon, Apr 18, 2005 13.45 13.85 13.43 13.85
171 NYSE WLK Fri, Apr 15, 2005 13.75 13.83 13.50 13.51
170 NYSE WLK Thu, Apr 14, 2005 14.65 14.65 13.70 13.77
169 NYSE WLK Wed, Apr 13, 2005 14.72 14.82 14.55 14.65
168 NYSE WLK Tue, Apr 12, 2005 14.39 14.87 14.20 14.75
167 NYSE WLK Mon, Apr 11, 2005 14.58 14.70 14.35 14.39
166 NYSE WLK Fri, Apr 8, 2005 15.13 15.32 14.55 14.66
165 NYSE WLK Thu, Apr 7, 2005 14.95 15.23 14.67 15.20
164 NYSE WLK Wed, Apr 6, 2005 16.40 16.41 14.61 15.01
163 NYSE WLK Tue, Apr 5, 2005 16.62 16.79 16.50 16.63
162 NYSE WLK Mon, Apr 4, 2005 16.06 16.65 16.05 16.59
161 NYSE WLK Fri, Apr 1, 2005 16.25 16.62 16.03 16.10
160 NYSE WLK Thu, Mar 31, 2005 15.70 16.18 15.70 16.18
159 NYSE WLK Wed, Mar 30, 2005 16.26 16.40 15.51 15.70
158 NYSE WLK Tue, Mar 29, 2005 16.20 16.93 16.06 16.20
157 NYSE WLK Mon, Mar 28, 2005 16.31 16.37 15.97 16.20
156 NYSE WLK Thu, Mar 24, 2005 16.25 16.75 15.70 16.31
155 NYSE WLK Wed, Mar 23, 2005 17.75 17.75 16.25 16.64
154 NYSE WLK Tue, Mar 22, 2005 17.50 18.20 17.50 17.79
153 NYSE WLK Mon, Mar 21, 2005 17.45 17.73 17.40 17.48
152 NYSE WLK Fri, Mar 18, 2005 17.78 17.87 17.45 17.47
151 NYSE WLK Thu, Mar 17, 2005 17.50 17.77 17.17 17.72
150 NYSE WLK Wed, Mar 16, 2005 17.74 17.87 16.76 17.32
149 NYSE WLK Tue, Mar 15, 2005 17.47 18.03 17.41 17.79
148 NYSE WLK Mon, Mar 14, 2005 18.35 18.38 16.97 17.40
147 NYSE WLK Fri, Mar 11, 2005 17.93 18.48 17.93 18.25
146 NYSE WLK Thu, Mar 10, 2005 18.48 18.51 17.46 17.88
145 NYSE WLK Wed, Mar 9, 2005 18.30 18.85 18.30 18.52
144 NYSE WLK Tue, Mar 8, 2005 18.47 18.47 18.17 18.23
143 NYSE WLK Mon, Mar 7, 2005 18.45 18.60 18.26 18.37
142 NYSE WLK Fri, Mar 4, 2005 17.77 18.15 17.77 18.05
141 NYSE WLK Thu, Mar 3, 2005 17.67 17.84 17.63 17.67
140 NYSE WLK Wed, Mar 2, 2005 17.54 18.15 17.35 17.57
139 NYSE WLK Tue, Mar 1, 2005 17.45 17.69 17.20 17.54
138 NYSE WLK Mon, Feb 28, 2005 17.45 17.50 17.25 17.34
137 NYSE WLK Fri, Feb 25, 2005 17.29 17.43 17.18 17.40
136 NYSE WLK Thu, Feb 24, 2005 16.83 17.40 16.70 17.21
135 NYSE WLK Wed, Feb 23, 2005 16.45 16.74 16.23 16.70
134 NYSE WLK Tue, Feb 22, 2005 15.98 16.70 15.79 16.43
133 NYSE WLK Fri, Feb 18, 2005 17.68 18.29 15.10 16.00
132 NYSE WLK Thu, Feb 17, 2005 17.61 18.15 17.04 17.09
131 NYSE WLK Wed, Feb 16, 2005 17.38 17.70 17.34 17.57
130 NYSE WLK Tue, Feb 15, 2005 17.53 17.82 16.88 17.37
129 NYSE WLK Mon, Feb 14, 2005 17.33 17.95 17.33 17.55
128 NYSE WLK Fri, Feb 11, 2005 16.86 17.88 16.86 17.33
127 NYSE WLK Thu, Feb 10, 2005 16.50 16.80 16.38 16.70
126 NYSE WLK Wed, Feb 9, 2005 16.66 16.71 16.30 16.50
125 NYSE WLK Tue, Feb 8, 2005 16.52 16.68 16.50 16.63
124 NYSE WLK Mon, Feb 7, 2005 16.55 16.84 16.43 16.65
123 NYSE WLK Fri, Feb 4, 2005 16.53 16.65 16.42 16.53
122 NYSE WLK Thu, Feb 3, 2005 16.73 16.81 16.47 16.53
121 NYSE WLK Wed, Feb 2, 2005 15.98 16.72 15.98 16.71
120 NYSE WLK Tue, Feb 1, 2005 15.65 16.00 15.45 15.95
119 NYSE WLK Mon, Jan 31, 2005 15.93 16.13 15.65 15.70
118 NYSE WLK Fri, Jan 28, 2005 15.90 16.00 15.74 15.83
117 NYSE WLK Thu, Jan 27, 2005 16.03 16.18 15.89 15.95
116 NYSE WLK Wed, Jan 26, 2005 16.05 16.15 15.69 16.07
115 NYSE WLK Tue, Jan 25, 2005 16.23 16.68 15.83 16.00
114 NYSE WLK Mon, Jan 24, 2005 16.97 17.05 16.05 16.13
113 NYSE WLK Fri, Jan 21, 2005 16.80 17.15 16.70 16.99
112 NYSE WLK Thu, Jan 20, 2005 17.05 17.05 16.63 16.75
111 NYSE WLK Wed, Jan 19, 2005 17.19 17.30 16.90 17.10
110 NYSE WLK Tue, Jan 18, 2005 16.69 17.18 16.38 16.98
109 NYSE WLK Fri, Jan 14, 2005 15.88 16.69 15.88 16.69
108 NYSE WLK Thu, Jan 13, 2005 15.60 15.95 15.55 15.85
107 NYSE WLK Wed, Jan 12, 2005 15.48 15.58 15.35 15.58
106 NYSE WLK Tue, Jan 11, 2005 15.61 15.65 15.23 15.40
105 NYSE WLK Mon, Jan 10, 2005 15.25 15.80 15.25 15.61
104 NYSE WLK Fri, Jan 7, 2005 15.60 15.94 15.25 15.32
103 NYSE WLK Thu, Jan 6, 2005 15.83 15.96 15.55 15.62
102 NYSE WLK Wed, Jan 5, 2005 16.45 16.58 15.83 15.83
101 NYSE WLK Tue, Jan 4, 2005 16.68 16.68 15.87 16.48
100 NYSE WLK Mon, Jan 3, 2005 16.67 16.89 16.60 16.68
99 NYSE WLK Fri, Dec 31, 2004 16.65 16.73 16.60 16.70
98 NYSE WLK Thu, Dec 30, 2004 17.05 17.05 16.53 16.65
97 NYSE WLK Wed, Dec 29, 2004 16.99 17.13 16.74 17.01
96 NYSE WLK Tue, Dec 28, 2004 16.98 17.05 16.76 17.01
95 NYSE WLK Mon, Dec 27, 2004 17.10 17.20 16.95 17.00
94 NYSE WLK Thu, Dec 23, 2004 16.85 17.61 16.55 16.90
93 NYSE WLK Wed, Dec 22, 2004 16.08 17.03 16.08 16.80
92 NYSE WLK Tue, Dec 21, 2004 15.15 16.14 15.13 15.95
91 NYSE WLK Mon, Dec 20, 2004 15.23 15.50 15.15 15.20
90 NYSE WLK Fri, Dec 17, 2004 15.81 15.87 15.25 15.26
89 NYSE WLK Thu, Dec 16, 2004 15.98 16.10 15.65 15.78
88 NYSE WLK Wed, Dec 15, 2004 15.92 16.00 15.86 15.98
87 NYSE WLK Tue, Dec 14, 2004 15.73 16.18 15.62 15.86
86 NYSE WLK Mon, Dec 13, 2004 14.70 15.84 14.70 15.75
85 NYSE WLK Fri, Dec 10, 2004 14.73 14.78 14.19 14.51
84 NYSE WLK Thu, Dec 9, 2004 15.01 15.18 14.88 14.96
83 NYSE WLK Wed, Dec 8, 2004 14.89 15.18 14.79 15.01
82 NYSE WLK Tue, Dec 7, 2004 15.80 15.84 14.44 14.89
81 NYSE WLK Mon, Dec 6, 2004 15.63 16.13 15.61 15.84
80 NYSE WLK Fri, Dec 3, 2004 15.31 15.66 15.25 15.63
79 NYSE WLK Thu, Dec 2, 2004 16.30 16.45 15.20 15.37
78 NYSE WLK Wed, Dec 1, 2004 15.85 16.38 15.79 16.28
77 NYSE WLK Tue, Nov 30, 2004 15.00 15.83 14.93 15.70
76 NYSE WLK Mon, Nov 29, 2004 14.95 15.30 14.90 15.00
75 NYSE WLK Fri, Nov 26, 2004 14.49 14.75 14.41 14.73
74 NYSE WLK Wed, Nov 24, 2004 14.75 14.81 14.40 14.50
73 NYSE WLK Tue, Nov 23, 2004 14.75 14.78 14.50 14.75
72 NYSE WLK Mon, Nov 22, 2004 14.65 14.78 14.51 14.77
71 NYSE WLK Fri, Nov 19, 2004 14.83 14.90 14.55 14.66
70 NYSE WLK Thu, Nov 18, 2004 14.73 15.00 14.64 14.83
69 NYSE WLK Wed, Nov 17, 2004 13.90 14.78 13.90 14.69
68 NYSE WLK Tue, Nov 16, 2004 13.24 14.14 13.24 13.88
67 NYSE WLK Mon, Nov 15, 2004 13.05 13.13 13.00 13.13
66 NYSE WLK Fri, Nov 12, 2004 12.53 13.00 12.53 13.00
65 NYSE WLK Thu, Nov 11, 2004 12.45 12.50 12.43 12.45
64 NYSE WLK Wed, Nov 10, 2004 12.44 12.45 12.38 12.42
63 NYSE WLK Tue, Nov 9, 2004 12.46 12.50 12.41 12.44
62 NYSE WLK Mon, Nov 8, 2004 12.58 12.65 12.45 12.46
61 NYSE WLK Fri, Nov 5, 2004 12.10 13.20 12.10 12.49
60 NYSE WLK Thu, Nov 4, 2004 11.95 12.05 11.95 12.03
59 NYSE WLK Wed, Nov 3, 2004 12.13 12.27 11.89 11.95
58 NYSE WLK Tue, Nov 2, 2004 11.95 12.08 11.83 11.84
57 NYSE WLK Mon, Nov 1, 2004 11.61 11.68 11.50 11.53
56 NYSE WLK Fri, Oct 29, 2004 11.28 11.54 11.28 11.54
55 NYSE WLK Thu, Oct 28, 2004 11.80 11.83 11.30 11.30
54 NYSE WLK Wed, Oct 27, 2004 11.58 11.90 11.58 11.75
53 NYSE WLK Tue, Oct 26, 2004 11.00 11.60 11.00 11.45
52 NYSE WLK Mon, Oct 25, 2004 10.88 11.05 10.87 11.05
51 NYSE WLK Fri, Oct 22, 2004 11.00 11.05 10.83 10.88
50 NYSE WLK Thu, Oct 21, 2004 10.93 11.00 10.67 10.95
49 NYSE WLK Wed, Oct 20, 2004 10.98 11.00 10.92 10.98
48 NYSE WLK Tue, Oct 19, 2004 11.20 11.30 10.95 10.99
47 NYSE WLK Mon, Oct 18, 2004 10.99 11.18 10.89 11.13
46 NYSE WLK Fri, Oct 15, 2004 11.19 11.24 10.98 11.01
45 NYSE WLK Thu, Oct 14, 2004 10.86 11.30 10.80 11.16
44 NYSE WLK Wed, Oct 13, 2004 11.28 11.31 10.74 10.90
43 NYSE WLK Tue, Oct 12, 2004 11.30 11.36 11.13 11.21
42 NYSE WLK Mon, Oct 11, 2004 11.28 11.39 11.25 11.37
41 NYSE WLK Fri, Oct 8, 2004 11.40 11.45 11.36 11.36
40 NYSE WLK Thu, Oct 7, 2004 11.45 11.63 11.36 11.37
39 NYSE WLK Wed, Oct 6, 2004 11.20 11.30 11.00 11.30
38 NYSE WLK Tue, Oct 5, 2004 11.00 11.20 10.96 11.05
37 NYSE WLK Mon, Oct 4, 2004 11.05 11.13 11.00 11.00
36 NYSE WLK Fri, Oct 1, 2004 11.23 11.25 10.95 11.03
35 NYSE WLK Thu, Sep 30, 2004 11.45 11.45 11.01 11.15
34 NYSE WLK Wed, Sep 29, 2004 11.00 11.43 10.97 11.38
33 NYSE WLK Tue, Sep 28, 2004 10.60 10.89 10.39 10.86
32 NYSE WLK Mon, Sep 27, 2004 10.35 10.67 10.31 10.59
31 NYSE WLK Fri, Sep 24, 2004 9.90 10.28 9.85 10.28
30 NYSE WLK Thu, Sep 23, 2004 9.75 9.87 9.68 9.85
29 NYSE WLK Wed, Sep 22, 2004 9.75 9.75 9.67 9.71
28 NYSE WLK Tue, Sep 21, 2004 9.66 9.83 9.65 9.75
27 NYSE WLK Mon, Sep 20, 2004 9.54 9.69 9.53 9.64
26 NYSE WLK Fri, Sep 17, 2004 9.48 9.56 9.40 9.40
25 NYSE WLK Thu, Sep 16, 2004 9.35 9.56 9.34 9.50
24 NYSE WLK Wed, Sep 15, 2004 9.43 9.57 9.30 9.32
23 NYSE WLK Tue, Sep 14, 2004 9.64 9.65 9.43 9.50
22 NYSE WLK Mon, Sep 13, 2004 9.65 9.84 9.62 9.67
21 NYSE WLK Fri, Sep 10, 2004 9.45 9.65 9.45 9.65
20 NYSE WLK Thu, Sep 9, 2004 9.20 9.58 9.20 9.45
19 NYSE WLK Wed, Sep 8, 2004 9.05 9.23 9.00 9.22
18 NYSE WLK Tue, Sep 7, 2004 8.88 9.08 8.85 9.08
17 NYSE WLK Fri, Sep 3, 2004 8.95 9.00 8.93 8.93
16 NYSE WLK Thu, Sep 2, 2004 8.98 8.98 8.90 8.95
15 NYSE WLK Wed, Sep 1, 2004 8.84 9.15 8.84 8.95
14 NYSE WLK Tue, Aug 31, 2004 8.75 8.75 8.47 8.75
13 NYSE WLK Mon, Aug 30, 2004 8.77 9.03 8.75 8.80
12 NYSE WLK Fri, Aug 27, 2004 8.38 8.78 8.35 8.77
11 NYSE WLK Thu, Aug 26, 2004 8.18 8.40 8.15 8.38
10 NYSE WLK Wed, Aug 25, 2004 8.05 8.18 8.00 8.15
9 NYSE WLK Tue, Aug 24, 2004 7.93 8.13 7.90 8.04
8 NYSE WLK Mon, Aug 23, 2004 7.83 7.92 7.83 7.88
7 NYSE WLK Fri, Aug 20, 2004 7.65 7.75 7.55 7.75
6 NYSE WLK Thu, Aug 19, 2004 7.60 7.70 7.58 7.62
5 NYSE WLK Wed, Aug 18, 2004 7.55 7.60 7.53 7.56
4 NYSE WLK Tue, Aug 17, 2004 7.43 7.60 7.43 7.60
3 NYSE WLK Mon, Aug 16, 2004 7.38 7.45 7.27 7.45
2 NYSE WLK Fri, Aug 13, 2004 7.39 7.53 7.38 7.46
1 NYSE WLK Thu, Aug 12, 2004 7.30 7.45 7.27 7.41
# Exchange Symbol Date Open High Low Close

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