Below are the 1961 trading days of historical prices for CHEK.
# | Exchange | Symbol | Date | Open | High | Low | Close | 1961 | NASDAQ | CHEK | Wed, Jan 18, 2023 | 3.12 | 3.14 | 3.01 | 3.06 | 1960 | NASDAQ | CHEK | Tue, Jan 17, 2023 | 2.98 | 3.20 | 2.98 | 3.03 | 1959 | NASDAQ | CHEK | Fri, Jan 13, 2023 | 3.25 | 3.42 | 2.91 | 3.03 | 1958 | NASDAQ | CHEK | Thu, Jan 12, 2023 | 2.73 | 3.69 | 2.69 | 3.27 | 1957 | NASDAQ | CHEK | Wed, Jan 11, 2023 | 2.70 | 2.73 | 2.63 | 2.71 | 1956 | NASDAQ | CHEK | Tue, Jan 10, 2023 | 2.56 | 2.74 | 2.56 | 2.68 | 1955 | NASDAQ | CHEK | Mon, Jan 9, 2023 | 2.63 | 2.64 | 2.54 | 2.62 | 1954 | NASDAQ | CHEK | Fri, Jan 6, 2023 | 2.63 | 2.81 | 2.52 | 2.66 | 1953 | NASDAQ | CHEK | Thu, Jan 5, 2023 | 2.73 | 2.76 | 2.55 | 2.66 | 1952 | NASDAQ | CHEK | Wed, Jan 4, 2023 | 2.49 | 2.83 | 2.40 | 2.72 | 1951 | NASDAQ | CHEK | Tue, Jan 3, 2023 | 2.30 | 2.48 | 2.20 | 2.44 | 1950 | NASDAQ | CHEK | Fri, Dec 30, 2022 | 2.01 | 2.22 | 2.01 | 2.20 | 1949 | NASDAQ | CHEK | Thu, Dec 29, 2022 | 2.00 | 2.20 | 2.00 | 2.07 | 1948 | NASDAQ | CHEK | Wed, Dec 28, 2022 | 1.89 | 2.10 | 1.88 | 2.02 | 1947 | NASDAQ | CHEK | Tue, Dec 27, 2022 | 2.16 | 2.25 | 1.89 | 1.93 | 1946 | NASDAQ | CHEK | Fri, Dec 23, 2022 | 2.23 | 2.35 | 2.03 | 2.11 | 1945 | NASDAQ | CHEK | Thu, Dec 22, 2022 | 2.51 | 2.55 | 2.08 | 2.24 | 1944 | NASDAQ | CHEK | Wed, Dec 21, 2022 | 2.63 | 2.73 | 2.51 | 2.51 | 1943 | NASDAQ | CHEK | Tue, Dec 20, 2022 | 2.61 | 2.69 | 2.52 | 2.60 | 1942 | NASDAQ | CHEK | Mon, Dec 19, 2022 | 2.60 | 2.73 | 2.59 | 2.63 | 1941 | NASDAQ | CHEK | Fri, Dec 16, 2022 | 2.60 | 2.63 | 2.52 | 2.60 | 1940 | NASDAQ | CHEK | Thu, Dec 15, 2022 | 2.80 | 2.80 | 2.55 | 2.58 | 1939 | NASDAQ | CHEK | Wed, Dec 14, 2022 | 2.94 | 3.02 | 2.80 | 2.81 | 1938 | NASDAQ | CHEK | Tue, Dec 13, 2022 | 2.99 | 3.10 | 2.94 | 3.03 | 1937 | NASDAQ | CHEK | Mon, Dec 12, 2022 | 3.30 | 3.30 | 3.04 | 3.07 | 1936 | NASDAQ | CHEK | Fri, Dec 9, 2022 | 3.30 | 3.50 | 3.25 | 3.30 | 1935 | NASDAQ | CHEK | Thu, Dec 8, 2022 | 3.52 | 3.62 | 3.28 | 3.28 | 1934 | NASDAQ | CHEK | Wed, Dec 7, 2022 | 3.61 | 3.61 | 3.48 | 3.52 | 1933 | NASDAQ | CHEK | Tue, Dec 6, 2022 | 4.00 | 4.00 | 3.53 | 3.61 | 1932 | NASDAQ | CHEK | Mon, Dec 5, 2022 | 3.80 | 3.80 | 3.60 | 3.62 | 1931 | NASDAQ | CHEK | Fri, Dec 2, 2022 | 3.54 | 3.89 | 3.54 | 3.80 | 1930 | NASDAQ | CHEK | Thu, Dec 1, 2022 | 3.53 | 3.74 | 3.41 | 3.59 | 1929 | NASDAQ | CHEK | Wed, Nov 30, 2022 | 3.02 | 3.86 | 3.02 | 3.46 | 1928 | NASDAQ | CHEK | Tue, Nov 29, 2022 | 2.95 | 3.16 | 2.92 | 2.94 | 1927 | NASDAQ | CHEK | Mon, Nov 28, 2022 | 3.80 | 4.38 | 2.90 | 2.90 | 1926 | NASDAQ | CHEK | Fri, Nov 25, 2022 | 3.86 | 4.15 | 3.43 | 3.84 | 1925 | NASDAQ | CHEK | Wed, Nov 23, 2022 | 4.65 | 5.00 | 4.60 | 4.64 | 1924 | NASDAQ | CHEK | Tue, Nov 22, 2022 | 4.80 | 5.00 | 4.62 | 4.71 | 1923 | NASDAQ | CHEK | Mon, Nov 21, 2022 | 4.96 | 5.00 | 4.63 | 4.73 | 1922 | NASDAQ | CHEK | Fri, Nov 18, 2022 | 5.40 | 5.40 | 4.89 | 4.89 | 1921 | NASDAQ | CHEK | Thu, Nov 17, 2022 | 5.10 | 5.40 | 5.02 | 5.11 | 1920 | NASDAQ | CHEK | Wed, Nov 16, 2022 | 5.25 | 5.37 | 5.00 | 5.10 | 1919 | NASDAQ | CHEK | Tue, Nov 15, 2022 | 5.02 | 5.40 | 5.02 | 5.02 | 1918 | NASDAQ | CHEK | Mon, Nov 14, 2022 | 4.82 | 5.40 | 4.82 | 5.20 | 1917 | NASDAQ | CHEK | Fri, Nov 11, 2022 | 4.77 | 5.16 | 4.77 | 5.00 | 1916 | NASDAQ | CHEK | Thu, Nov 10, 2022 | 4.88 | 5.30 | 4.58 | 4.75 | 1915 | NASDAQ | CHEK | Wed, Nov 9, 2022 | 4.93 | 4.94 | 4.65 | 4.70 | 1914 | NASDAQ | CHEK | Tue, Nov 8, 2022 | 5.18 | 5.27 | 4.86 | 4.96 | 1913 | NASDAQ | CHEK | Mon, Nov 7, 2022 | 5.38 | 5.80 | 5.00 | 5.03 | 1912 | NASDAQ | CHEK | Fri, Nov 4, 2022 | 5.40 | 5.44 | 4.95 | 5.38 | 1911 | NASDAQ | CHEK | Thu, Nov 3, 2022 | 4.81 | 6.54 | 4.65 | 5.26 | 1910 | NASDAQ | CHEK | Wed, Nov 2, 2022 | 4.80 | 4.82 | 4.74 | 4.81 | 1909 | NASDAQ | CHEK | Tue, Nov 1, 2022 | 4.89 | 4.89 | 4.60 | 4.73 | 1908 | NASDAQ | CHEK | Mon, Oct 31, 2022 | 5.00 | 5.00 | 4.65 | 4.80 | 1907 | NASDAQ | CHEK | Fri, Oct 28, 2022 | 4.61 | 4.94 | 4.61 | 4.80 | 1906 | NASDAQ | CHEK | Thu, Oct 27, 2022 | 4.67 | 4.86 | 4.60 | 4.81 | 1905 | NASDAQ | CHEK | Wed, Oct 26, 2022 | 4.90 | 4.90 | 4.70 | 4.77 | 1904 | NASDAQ | CHEK | Tue, Oct 25, 2022 | 4.79 | 5.00 | 4.70 | 4.94 | 1903 | NASDAQ | CHEK | Mon, Oct 24, 2022 | 5.00 | 5.01 | 4.64 | 4.73 | 1902 | NASDAQ | CHEK | Fri, Oct 21, 2022 | 4.80 | 4.90 | 4.60 | 4.86 | 1901 | NASDAQ | CHEK | Thu, Oct 20, 2022 | 4.96 | 5.20 | 4.80 | 4.99 | 1900 | NASDAQ | CHEK | Wed, Oct 19, 2022 | 5.00 | 5.26 | 4.90 | 5.02 | 1899 | NASDAQ | CHEK | Tue, Oct 18, 2022 | 5.00 | 5.40 | 4.80 | 4.90 | 1898 | NASDAQ | CHEK | Mon, Oct 17, 2022 | 4.80 | 5.07 | 4.60 | 4.93 | 1897 | NASDAQ | CHEK | Fri, Oct 14, 2022 | 5.00 | 5.50 | 4.81 | 4.81 | 1896 | NASDAQ | CHEK | Thu, Oct 13, 2022 | 5.00 | 5.20 | 4.90 | 5.15 | 1895 | NASDAQ | CHEK | Wed, Oct 12, 2022 | 5.40 | 5.50 | 4.88 | 5.14 | 1894 | NASDAQ | CHEK | Tue, Oct 11, 2022 | 5.60 | 5.70 | 5.30 | 5.30 | 1893 | NASDAQ | CHEK | Mon, Oct 10, 2022 | 5.90 | 5.90 | 5.33 | 5.45 | 1892 | NASDAQ | CHEK | Fri, Oct 7, 2022 | 5.85 | 5.90 | 5.46 | 5.70 | 1891 | NASDAQ | CHEK | Thu, Oct 6, 2022 | 5.80 | 6.00 | 5.73 | 5.80 | 1890 | NASDAQ | CHEK | Wed, Oct 5, 2022 | 5.96 | 5.96 | 5.44 | 5.83 | 1889 | NASDAQ | CHEK | Tue, Oct 4, 2022 | 5.69 | 5.97 | 5.60 | 5.90 | 1888 | NASDAQ | CHEK | Mon, Oct 3, 2022 | 5.51 | 5.80 | 5.51 | 5.72 | 1887 | NASDAQ | CHEK | Fri, Sep 30, 2022 | 5.86 | 5.90 | 5.47 | 5.80 | 1886 | NASDAQ | CHEK | Thu, Sep 29, 2022 | 5.70 | 5.72 | 5.40 | 5.71 | 1885 | NASDAQ | CHEK | Wed, Sep 28, 2022 | 5.26 | 5.80 | 5.26 | 5.41 | 1884 | NASDAQ | CHEK | Tue, Sep 27, 2022 | 6.01 | 6.06 | 5.40 | 5.71 | 1883 | NASDAQ | CHEK | Mon, Sep 26, 2022 | 5.64 | 6.04 | 5.51 | 5.76 | 1882 | NASDAQ | CHEK | Fri, Sep 23, 2022 | 5.21 | 5.90 | 5.11 | 5.81 | 1881 | NASDAQ | CHEK | Thu, Sep 22, 2022 | 5.76 | 5.91 | 5.10 | 5.46 | 1880 | NASDAQ | CHEK | Wed, Sep 21, 2022 | 5.74 | 6.20 | 5.26 | 5.49 | 1879 | NASDAQ | CHEK | Tue, Sep 20, 2022 | 5.80 | 6.15 | 5.60 | 5.92 | 1878 | NASDAQ | CHEK | Mon, Sep 19, 2022 | 6.04 | 6.20 | 5.82 | 6.12 | 1877 | NASDAQ | CHEK | Fri, Sep 16, 2022 | 6.40 | 6.40 | 6.00 | 6.20 | 1876 | NASDAQ | CHEK | Thu, Sep 15, 2022 | 6.39 | 6.98 | 6.14 | 6.37 | 1875 | NASDAQ | CHEK | Wed, Sep 14, 2022 | 6.39 | 6.50 | 6.11 | 6.36 | 1874 | NASDAQ | CHEK | Tue, Sep 13, 2022 | 6.20 | 6.40 | 6.06 | 6.19 | 1873 | NASDAQ | CHEK | Mon, Sep 12, 2022 | 6.44 | 6.61 | 6.20 | 6.32 | 1872 | NASDAQ | CHEK | Fri, Sep 9, 2022 | 6.40 | 6.80 | 6.30 | 6.44 | 1871 | NASDAQ | CHEK | Thu, Sep 8, 2022 | 6.26 | 6.40 | 6.13 | 6.28 | 1870 | NASDAQ | CHEK | Wed, Sep 7, 2022 | 6.20 | 6.40 | 6.20 | 6.21 | 1869 | NASDAQ | CHEK | Tue, Sep 6, 2022 | 7.00 | 7.00 | 6.20 | 6.20 | 1868 | NASDAQ | CHEK | Fri, Sep 2, 2022 | 6.67 | 6.80 | 6.40 | 6.42 | 1867 | NASDAQ | CHEK | Thu, Sep 1, 2022 | 6.60 | 6.90 | 6.07 | 6.40 | 1866 | NASDAQ | CHEK | Wed, Aug 31, 2022 | 7.50 | 8.20 | 6.60 | 7.00 | 1865 | NASDAQ | CHEK | Tue, Aug 30, 2022 | 9.00 | 9.20 | 8.18 | 8.80 | 1864 | NASDAQ | CHEK | Mon, Aug 29, 2022 | 7.40 | 8.79 | 7.30 | 8.23 | 1863 | NASDAQ | CHEK | Fri, Aug 26, 2022 | 7.00 | 7.88 | 6.80 | 7.88 | 1862 | NASDAQ | CHEK | Thu, Aug 25, 2022 | 7.00 | 7.34 | 6.90 | 6.93 | 1861 | NASDAQ | CHEK | Wed, Aug 24, 2022 | 7.20 | 7.20 | 6.52 | 6.98 | 1860 | NASDAQ | CHEK | Tue, Aug 23, 2022 | 6.66 | 6.73 | 6.40 | 6.62 | 1859 | NASDAQ | CHEK | Mon, Aug 22, 2022 | 6.60 | 6.84 | 6.22 | 6.60 | 1858 | NASDAQ | CHEK | Fri, Aug 19, 2022 | 6.60 | 7.27 | 6.49 | 6.80 | 1857 | NASDAQ | CHEK | Thu, Aug 18, 2022 | 7.37 | 7.37 | 6.80 | 7.17 | 1856 | NASDAQ | CHEK | Wed, Aug 17, 2022 | 7.00 | 7.35 | 7.00 | 7.23 | 1855 | NASDAQ | CHEK | Tue, Aug 16, 2022 | 7.13 | 7.25 | 6.77 | 7.19 | 1854 | NASDAQ | CHEK | Mon, Aug 15, 2022 | 7.14 | 7.30 | 6.74 | 7.07 | 1853 | NASDAQ | CHEK | Fri, Aug 12, 2022 | 6.80 | 7.20 | 6.60 | 7.20 | 1852 | NASDAQ | CHEK | Thu, Aug 11, 2022 | 7.00 | 7.00 | 6.60 | 6.88 | 1851 | NASDAQ | CHEK | Wed, Aug 10, 2022 | 6.60 | 7.00 | 6.20 | 6.60 | 1850 | NASDAQ | CHEK | Tue, Aug 9, 2022 | 6.60 | 7.00 | 6.36 | 6.50 | 1849 | NASDAQ | CHEK | Mon, Aug 8, 2022 | 6.80 | 6.93 | 6.40 | 6.79 | 1848 | NASDAQ | CHEK | Fri, Aug 5, 2022 | 6.80 | 6.85 | 6.46 | 6.80 | 1847 | NASDAQ | CHEK | Thu, Aug 4, 2022 | 6.40 | 6.80 | 6.20 | 6.70 | 1846 | NASDAQ | CHEK | Wed, Aug 3, 2022 | 6.22 | 6.60 | 5.80 | 6.37 | 1845 | NASDAQ | CHEK | Tue, Aug 2, 2022 | 6.40 | 6.55 | 6.21 | 6.40 | 1844 | NASDAQ | CHEK | Mon, Aug 1, 2022 | 6.20 | 6.36 | 6.10 | 6.23 | 1843 | NASDAQ | CHEK | Fri, Jul 29, 2022 | 6.30 | 6.50 | 6.05 | 6.11 | 1842 | NASDAQ | CHEK | Thu, Jul 28, 2022 | 6.40 | 6.53 | 6.00 | 6.39 | 1841 | NASDAQ | CHEK | Wed, Jul 27, 2022 | 6.64 | 6.80 | 6.60 | 6.63 | 1840 | NASDAQ | CHEK | Tue, Jul 26, 2022 | 6.80 | 6.80 | 6.60 | 6.63 | 1839 | NASDAQ | CHEK | Mon, Jul 25, 2022 | 7.20 | 7.20 | 6.63 | 6.80 | 1838 | NASDAQ | CHEK | Fri, Jul 22, 2022 | 7.20 | 7.62 | 6.82 | 7.08 | 1837 | NASDAQ | CHEK | Thu, Jul 21, 2022 | 6.97 | 7.39 | 6.97 | 7.27 | 1836 | NASDAQ | CHEK | Wed, Jul 20, 2022 | 6.91 | 7.20 | 6.91 | 7.00 | 1835 | NASDAQ | CHEK | Tue, Jul 19, 2022 | 6.36 | 7.00 | 6.36 | 7.00 | 1834 | NASDAQ | CHEK | Mon, Jul 18, 2022 | 6.56 | 6.62 | 6.26 | 6.48 | 1833 | NASDAQ | CHEK | Fri, Jul 15, 2022 | 6.40 | 6.58 | 6.40 | 6.56 | 1832 | NASDAQ | CHEK | Thu, Jul 14, 2022 | 6.52 | 6.59 | 6.40 | 6.48 | 1831 | NASDAQ | CHEK | Wed, Jul 13, 2022 | 6.66 | 6.80 | 6.43 | 6.59 | 1830 | NASDAQ | CHEK | Tue, Jul 12, 2022 | 6.80 | 6.90 | 6.44 | 6.73 | 1829 | NASDAQ | CHEK | Mon, Jul 11, 2022 | 6.73 | 6.97 | 6.54 | 6.73 | 1828 | NASDAQ | CHEK | Fri, Jul 8, 2022 | 6.61 | 6.98 | 6.40 | 6.73 | 1827 | NASDAQ | CHEK | Thu, Jul 7, 2022 | 6.80 | 6.98 | 6.42 | 6.55 | 1826 | NASDAQ | CHEK | Wed, Jul 6, 2022 | 6.76 | 7.00 | 6.45 | 6.80 | 1825 | NASDAQ | CHEK | Tue, Jul 5, 2022 | 6.02 | 6.80 | 6.02 | 6.63 | 1824 | NASDAQ | CHEK | Fri, Jul 1, 2022 | 6.18 | 6.36 | 6.04 | 6.26 | 1823 | NASDAQ | CHEK | Thu, Jun 30, 2022 | 6.39 | 6.60 | 6.06 | 6.18 | 1822 | NASDAQ | CHEK | Wed, Jun 29, 2022 | 6.48 | 6.70 | 6.20 | 6.25 | 1821 | NASDAQ | CHEK | Tue, Jun 28, 2022 | 6.60 | 6.80 | 6.40 | 6.66 | 1820 | NASDAQ | CHEK | Mon, Jun 27, 2022 | 6.40 | 6.80 | 6.38 | 6.64 | 1819 | NASDAQ | CHEK | Fri, Jun 24, 2022 | 6.48 | 6.66 | 6.25 | 6.56 | 1818 | NASDAQ | CHEK | Thu, Jun 23, 2022 | 6.66 | 6.80 | 6.02 | 6.20 | 1817 | NASDAQ | CHEK | Wed, Jun 22, 2022 | 6.22 | 6.60 | 6.22 | 6.40 | 1816 | NASDAQ | CHEK | Tue, Jun 21, 2022 | 6.90 | 6.90 | 6.23 | 6.50 | 1815 | NASDAQ | CHEK | Fri, Jun 17, 2022 | 6.80 | 6.89 | 6.40 | 6.43 | 1814 | NASDAQ | CHEK | Thu, Jun 16, 2022 | 6.80 | 6.86 | 6.20 | 6.60 | 1813 | NASDAQ | CHEK | Wed, Jun 15, 2022 | 7.00 | 7.20 | 6.40 | 6.80 | 1812 | NASDAQ | CHEK | Tue, Jun 14, 2022 | 7.18 | 7.30 | 6.90 | 7.14 | 1811 | NASDAQ | CHEK | Mon, Jun 13, 2022 | 7.00 | 7.20 | 6.60 | 7.00 | 1810 | NASDAQ | CHEK | Fri, Jun 10, 2022 | 7.40 | 7.60 | 6.10 | 7.27 | 1809 | NASDAQ | CHEK | Thu, Jun 9, 2022 | 7.79 | 8.00 | 5.80 | 7.36 | 1808 | NASDAQ | CHEK | Wed, Jun 8, 2022 | 7.57 | 7.80 | 7.46 | 7.76 | 1807 | NASDAQ | CHEK | Tue, Jun 7, 2022 | 7.24 | 7.60 | 7.18 | 7.59 | 1806 | NASDAQ | CHEK | Mon, Jun 6, 2022 | 7.35 | 7.40 | 7.10 | 7.30 | 1805 | NASDAQ | CHEK | Fri, Jun 3, 2022 | 7.10 | 7.40 | 7.10 | 7.35 | 1804 | NASDAQ | CHEK | Thu, Jun 2, 2022 | 7.22 | 7.30 | 7.10 | 7.27 | 1803 | NASDAQ | CHEK | Wed, Jun 1, 2022 | 7.30 | 7.38 | 6.93 | 7.28 | 1802 | NASDAQ | CHEK | Tue, May 31, 2022 | 7.30 | 7.38 | 6.80 | 7.25 | 1801 | NASDAQ | CHEK | Fri, May 27, 2022 | 6.78 | 7.40 | 6.76 | 7.28 | 1800 | NASDAQ | CHEK | Thu, May 26, 2022 | 6.37 | 6.80 | 6.06 | 6.78 | 1799 | NASDAQ | CHEK | Wed, May 25, 2022 | 6.20 | 6.40 | 6.00 | 6.20 | 1798 | NASDAQ | CHEK | Tue, May 24, 2022 | 6.41 | 6.50 | 6.00 | 6.13 | 1797 | NASDAQ | CHEK | Mon, May 23, 2022 | 6.85 | 6.85 | 6.44 | 6.54 | 1796 | NASDAQ | CHEK | Fri, May 20, 2022 | 7.20 | 7.23 | 6.62 | 6.71 | 1795 | NASDAQ | CHEK | Thu, May 19, 2022 | 7.25 | 7.30 | 7.00 | 7.16 | 1794 | NASDAQ | CHEK | Wed, May 18, 2022 | 7.20 | 7.40 | 7.10 | 7.30 | 1793 | NASDAQ | CHEK | Tue, May 17, 2022 | 7.18 | 7.30 | 7.00 | 7.28 | 1792 | NASDAQ | CHEK | Mon, May 16, 2022 | 7.16 | 7.20 | 6.62 | 6.97 | 1791 | NASDAQ | CHEK | Fri, May 13, 2022 | 7.00 | 7.20 | 6.60 | 7.19 | 1790 | NASDAQ | CHEK | Thu, May 12, 2022 | 6.40 | 6.60 | 6.04 | 6.50 | 1789 | NASDAQ | CHEK | Wed, May 11, 2022 | 6.60 | 7.09 | 6.40 | 6.60 | 1788 | NASDAQ | CHEK | Tue, May 10, 2022 | 7.20 | 7.37 | 6.40 | 6.55 | 1787 | NASDAQ | CHEK | Mon, May 9, 2022 | 7.20 | 7.20 | 6.60 | 7.04 | 1786 | NASDAQ | CHEK | Fri, May 6, 2022 | 6.94 | 7.40 | 6.94 | 7.40 | 1785 | NASDAQ | CHEK | Thu, May 5, 2022 | 7.31 | 7.48 | 7.00 | 7.40 | 1784 | NASDAQ | CHEK | Wed, May 4, 2022 | 7.00 | 7.30 | 7.00 | 7.30 | 1783 | NASDAQ | CHEK | Tue, May 3, 2022 | 7.04 | 7.32 | 7.04 | 7.30 | 1782 | NASDAQ | CHEK | Mon, May 2, 2022 | 7.20 | 7.49 | 7.00 | 7.18 | 1781 | NASDAQ | CHEK | Fri, Apr 29, 2022 | 7.36 | 7.40 | 7.13 | 7.22 | 1780 | NASDAQ | CHEK | Thu, Apr 28, 2022 | 7.20 | 7.50 | 7.20 | 7.50 | 1779 | NASDAQ | CHEK | Wed, Apr 27, 2022 | 7.04 | 7.40 | 7.00 | 7.11 | 1778 | NASDAQ | CHEK | Tue, Apr 26, 2022 | 7.63 | 7.70 | 7.20 | 7.25 | 1777 | NASDAQ | CHEK | Mon, Apr 25, 2022 | 7.40 | 7.68 | 7.20 | 7.64 | 1776 | NASDAQ | CHEK | Fri, Apr 22, 2022 | 7.22 | 7.49 | 7.02 | 7.45 | 1775 | NASDAQ | CHEK | Thu, Apr 21, 2022 | 7.60 | 7.73 | 7.30 | 7.48 | 1774 | NASDAQ | CHEK | Wed, Apr 20, 2022 | 7.80 | 7.80 | 7.42 | 7.44 | 1773 | NASDAQ | CHEK | Tue, Apr 19, 2022 | 7.42 | 7.80 | 7.35 | 7.74 | 1772 | NASDAQ | CHEK | Mon, Apr 18, 2022 | 7.74 | 7.80 | 7.28 | 7.40 | 1771 | NASDAQ | CHEK | Thu, Apr 14, 2022 | 7.78 | 7.78 | 7.60 | 7.69 | 1770 | NASDAQ | CHEK | Wed, Apr 13, 2022 | 7.60 | 7.80 | 7.60 | 7.78 | 1769 | NASDAQ | CHEK | Tue, Apr 12, 2022 | 7.83 | 7.83 | 7.60 | 7.67 | 1768 | NASDAQ | CHEK | Mon, Apr 11, 2022 | 7.80 | 7.80 | 7.27 | 7.59 | 1767 | NASDAQ | CHEK | Fri, Apr 8, 2022 | 7.60 | 7.60 | 7.22 | 7.57 | 1766 | NASDAQ | CHEK | Thu, Apr 7, 2022 | 7.55 | 7.80 | 7.20 | 7.42 | 1765 | NASDAQ | CHEK | Wed, Apr 6, 2022 | 7.80 | 8.00 | 7.60 | 7.66 | 1764 | NASDAQ | CHEK | Tue, Apr 5, 2022 | 7.80 | 8.00 | 7.80 | 7.90 | 1763 | NASDAQ | CHEK | Mon, Apr 4, 2022 | 8.20 | 8.20 | 7.81 | 7.97 | 1762 | NASDAQ | CHEK | Fri, Apr 1, 2022 | 7.98 | 8.00 | 7.60 | 7.88 | 1761 | NASDAQ | CHEK | Thu, Mar 31, 2022 | 8.20 | 8.28 | 7.63 | 7.76 | 1760 | NASDAQ | CHEK | Wed, Mar 30, 2022 | 8.27 | 8.30 | 8.00 | 8.17 | 1759 | NASDAQ | CHEK | Tue, Mar 29, 2022 | 7.78 | 8.38 | 7.60 | 8.10 | 1758 | NASDAQ | CHEK | Mon, Mar 28, 2022 | 7.80 | 8.00 | 6.75 | 7.44 | 1757 | NASDAQ | CHEK | Fri, Mar 25, 2022 | 8.00 | 8.19 | 7.17 | 7.62 | 1756 | NASDAQ | CHEK | Thu, Mar 24, 2022 | 8.20 | 8.26 | 7.85 | 8.03 | 1755 | NASDAQ | CHEK | Wed, Mar 23, 2022 | 8.36 | 8.36 | 7.85 | 8.17 | 1754 | NASDAQ | CHEK | Tue, Mar 22, 2022 | 8.38 | 8.42 | 8.00 | 8.28 | 1753 | NASDAQ | CHEK | Mon, Mar 21, 2022 | 9.20 | 9.20 | 8.13 | 8.27 | 1752 | NASDAQ | CHEK | Fri, Mar 18, 2022 | 8.06 | 8.40 | 8.00 | 8.27 | 1751 | NASDAQ | CHEK | Thu, Mar 17, 2022 | 7.87 | 8.18 | 7.80 | 8.07 | 1750 | NASDAQ | CHEK | Wed, Mar 16, 2022 | 7.60 | 7.80 | 7.50 | 7.69 | 1749 | NASDAQ | CHEK | Tue, Mar 15, 2022 | 7.28 | 7.59 | 7.16 | 7.48 | 1748 | NASDAQ | CHEK | Mon, Mar 14, 2022 | 8.00 | 8.04 | 7.22 | 7.40 | 1747 | NASDAQ | CHEK | Fri, Mar 11, 2022 | 8.00 | 8.04 | 7.64 | 7.94 | 1746 | NASDAQ | CHEK | Thu, Mar 10, 2022 | 7.69 | 7.96 | 7.50 | 7.95 | 1745 | NASDAQ | CHEK | Wed, Mar 9, 2022 | 7.54 | 7.84 | 7.34 | 7.80 | 1744 | NASDAQ | CHEK | Tue, Mar 8, 2022 | 7.21 | 7.80 | 7.16 | 7.61 | 1743 | NASDAQ | CHEK | Mon, Mar 7, 2022 | 7.62 | 7.62 | 7.25 | 7.49 | 1742 | NASDAQ | CHEK | Fri, Mar 4, 2022 | 7.98 | 7.98 | 7.20 | 7.60 | 1741 | NASDAQ | CHEK | Thu, Mar 3, 2022 | 8.30 | 8.40 | 7.80 | 7.90 | 1740 | NASDAQ | CHEK | Wed, Mar 2, 2022 | 8.20 | 8.39 | 7.83 | 8.20 | 1739 | NASDAQ | CHEK | Tue, Mar 1, 2022 | 8.08 | 8.60 | 7.74 | 7.74 | 1738 | NASDAQ | CHEK | Mon, Feb 28, 2022 | 12.60 | 12.75 | 11.80 | 12.29 | 1737 | NASDAQ | CHEK | Fri, Feb 25, 2022 | 11.60 | 12.56 | 11.60 | 12.20 | 1736 | NASDAQ | CHEK | Thu, Feb 24, 2022 | 11.00 | 11.80 | 10.80 | 11.74 | 1735 | NASDAQ | CHEK | Wed, Feb 23, 2022 | 11.81 | 12.40 | 11.51 | 11.75 | 1734 | NASDAQ | CHEK | Tue, Feb 22, 2022 | 11.50 | 12.00 | 11.20 | 11.82 | 1733 | NASDAQ | CHEK | Fri, Feb 18, 2022 | 12.20 | 12.20 | 11.22 | 11.76 | 1732 | NASDAQ | CHEK | Thu, Feb 17, 2022 | 12.10 | 12.60 | 11.80 | 11.97 | 1731 | NASDAQ | CHEK | Wed, Feb 16, 2022 | 12.40 | 12.60 | 12.25 | 12.49 | 1730 | NASDAQ | CHEK | Tue, Feb 15, 2022 | 12.61 | 12.80 | 12.10 | 12.40 | 1729 | NASDAQ | CHEK | Mon, Feb 14, 2022 | 11.80 | 12.50 | 11.60 | 11.80 | 1728 | NASDAQ | CHEK | Fri, Feb 11, 2022 | 13.00 | 13.20 | 12.00 | 12.25 | 1727 | NASDAQ | CHEK | Thu, Feb 10, 2022 | 12.56 | 13.59 | 12.50 | 12.84 | 1726 | NASDAQ | CHEK | Wed, Feb 9, 2022 | 12.80 | 13.20 | 12.23 | 12.93 | 1725 | NASDAQ | CHEK | Tue, Feb 8, 2022 | 13.40 | 13.60 | 12.04 | 12.79 | 1724 | NASDAQ | CHEK | Mon, Feb 7, 2022 | 12.75 | 14.00 | 11.82 | 13.40 | 1723 | NASDAQ | CHEK | Fri, Feb 4, 2022 | 12.20 | 12.20 | 11.20 | 11.99 | 1722 | NASDAQ | CHEK | Thu, Feb 3, 2022 | 12.00 | 12.20 | 11.00 | 11.80 | 1721 | NASDAQ | CHEK | Wed, Feb 2, 2022 | 12.40 | 12.40 | 11.60 | 11.92 | 1720 | NASDAQ | CHEK | Tue, Feb 1, 2022 | 11.60 | 12.60 | 11.40 | 11.80 | 1719 | NASDAQ | CHEK | Mon, Jan 31, 2022 | 10.00 | 11.40 | 9.62 | 11.40 | 1718 | NASDAQ | CHEK | Fri, Jan 28, 2022 | 9.40 | 9.80 | 8.60 | 9.20 | 1717 | NASDAQ | CHEK | Thu, Jan 27, 2022 | 10.20 | 10.37 | 9.25 | 9.58 | 1716 | NASDAQ | CHEK | Wed, Jan 26, 2022 | 10.30 | 10.60 | 9.80 | 9.87 | 1715 | NASDAQ | CHEK | Tue, Jan 25, 2022 | 10.29 | 10.70 | 10.00 | 10.30 | 1714 | NASDAQ | CHEK | Mon, Jan 24, 2022 | 10.64 | 10.74 | 9.65 | 10.30 | 1713 | NASDAQ | CHEK | Fri, Jan 21, 2022 | 10.80 | 11.40 | 10.00 | 10.76 | 1712 | NASDAQ | CHEK | Thu, Jan 20, 2022 | 11.80 | 12.79 | 10.60 | 10.80 | 1711 | NASDAQ | CHEK | Wed, Jan 19, 2022 | 12.80 | 12.80 | 11.61 | 11.79 | 1710 | NASDAQ | CHEK | Tue, Jan 18, 2022 | 13.00 | 13.20 | 12.12 | 12.30 | 1709 | NASDAQ | CHEK | Fri, Jan 14, 2022 | 12.67 | 13.40 | 12.45 | 12.84 | 1708 | NASDAQ | CHEK | Thu, Jan 13, 2022 | 13.27 | 13.27 | 12.51 | 12.57 | 1707 | NASDAQ | CHEK | Wed, Jan 12, 2022 | 14.00 | 14.00 | 13.03 | 13.33 | 1706 | NASDAQ | CHEK | Tue, Jan 11, 2022 | 12.46 | 13.77 | 12.42 | 13.60 | 1705 | NASDAQ | CHEK | Mon, Jan 10, 2022 | 12.80 | 12.90 | 11.80 | 12.48 | 1704 | NASDAQ | CHEK | Fri, Jan 7, 2022 | 13.00 | 13.60 | 12.42 | 13.18 | 1703 | NASDAQ | CHEK | Thu, Jan 6, 2022 | 12.90 | 13.10 | 12.02 | 12.58 | 1702 | NASDAQ | CHEK | Wed, Jan 5, 2022 | 13.39 | 13.40 | 12.57 | 12.90 | 1701 | NASDAQ | CHEK | Tue, Jan 4, 2022 | 13.76 | 13.80 | 12.83 | 13.28 | 1700 | NASDAQ | CHEK | Mon, Jan 3, 2022 | 13.25 | 13.80 | 11.61 | 13.74 | 1699 | NASDAQ | CHEK | Fri, Dec 31, 2021 | 13.60 | 14.20 | 13.20 | 13.49 | 1698 | NASDAQ | CHEK | Thu, Dec 30, 2021 | 13.60 | 14.60 | 13.60 | 13.80 | 1697 | NASDAQ | CHEK | Wed, Dec 29, 2021 | 13.40 | 14.00 | 12.84 | 13.50 | 1696 | NASDAQ | CHEK | Tue, Dec 28, 2021 | 14.20 | 14.20 | 13.20 | 13.22 | 1695 | NASDAQ | CHEK | Mon, Dec 27, 2021 | 14.76 | 15.40 | 14.00 | 14.00 | 1694 | NASDAQ | CHEK | Thu, Dec 23, 2021 | 14.20 | 15.99 | 13.80 | 14.75 | 1693 | NASDAQ | CHEK | Wed, Dec 22, 2021 | 14.05 | 14.25 | 13.20 | 14.24 | 1692 | NASDAQ | CHEK | Tue, Dec 21, 2021 | 13.80 | 14.28 | 12.82 | 13.58 | 1691 | NASDAQ | CHEK | Mon, Dec 20, 2021 | 14.00 | 14.04 | 13.40 | 13.89 | 1690 | NASDAQ | CHEK | Fri, Dec 17, 2021 | 14.00 | 14.60 | 13.62 | 14.40 | 1689 | NASDAQ | CHEK | Thu, Dec 16, 2021 | 14.34 | 14.60 | 13.70 | 14.05 | 1688 | NASDAQ | CHEK | Wed, Dec 15, 2021 | 14.40 | 14.52 | 12.06 | 14.21 | 1687 | NASDAQ | CHEK | Tue, Dec 14, 2021 | 14.68 | 15.05 | 14.40 | 14.88 | 1686 | NASDAQ | CHEK | Mon, Dec 13, 2021 | 15.81 | 15.81 | 14.40 | 15.15 | 1685 | NASDAQ | CHEK | Fri, Dec 10, 2021 | 15.99 | 16.20 | 15.30 | 15.79 | 1684 | NASDAQ | CHEK | Thu, Dec 9, 2021 | 16.15 | 16.19 | 15.75 | 15.99 | 1683 | NASDAQ | CHEK | Wed, Dec 8, 2021 | 15.97 | 16.40 | 15.40 | 16.19 | 1682 | NASDAQ | CHEK | Tue, Dec 7, 2021 | 14.40 | 16.40 | 14.30 | 15.97 | 1681 | NASDAQ | CHEK | Mon, Dec 6, 2021 | 14.03 | 14.40 | 13.00 | 14.17 | 1680 | NASDAQ | CHEK | Fri, Dec 3, 2021 | 15.75 | 15.76 | 14.38 | 14.55 | 1679 | NASDAQ | CHEK | Thu, Dec 2, 2021 | 16.00 | 16.32 | 15.06 | 15.48 | 1678 | NASDAQ | CHEK | Wed, Dec 1, 2021 | 16.60 | 16.88 | 15.80 | 15.98 | 1677 | NASDAQ | CHEK | Tue, Nov 30, 2021 | 16.20 | 17.20 | 15.40 | 16.74 | 1676 | NASDAQ | CHEK | Mon, Nov 29, 2021 | 16.99 | 17.80 | 16.40 | 16.58 | 1675 | NASDAQ | CHEK | Fri, Nov 26, 2021 | 16.40 | 17.30 | 16.40 | 17.02 | 1674 | NASDAQ | CHEK | Wed, Nov 24, 2021 | 15.40 | 17.40 | 15.40 | 16.83 | 1673 | NASDAQ | CHEK | Tue, Nov 23, 2021 | 16.60 | 17.00 | 15.00 | 15.00 | 1672 | NASDAQ | CHEK | Mon, Nov 22, 2021 | 17.62 | 17.79 | 16.00 | 16.00 | 1671 | NASDAQ | CHEK | Fri, Nov 19, 2021 | 17.20 | 17.36 | 16.66 | 16.89 | 1670 | NASDAQ | CHEK | Thu, Nov 18, 2021 | 17.87 | 18.60 | 16.90 | 17.45 | 1669 | NASDAQ | CHEK | Wed, Nov 17, 2021 | 18.80 | 18.80 | 17.40 | 17.61 | 1668 | NASDAQ | CHEK | Tue, Nov 16, 2021 | 18.40 | 18.60 | 18.20 | 18.26 | 1667 | NASDAQ | CHEK | Mon, Nov 15, 2021 | 18.45 | 18.95 | 18.24 | 18.36 | 1666 | NASDAQ | CHEK | Fri, Nov 12, 2021 | 19.15 | 19.60 | 18.34 | 18.89 | 1665 | NASDAQ | CHEK | Thu, Nov 11, 2021 | 19.20 | 19.78 | 19.00 | 19.01 | 1664 | NASDAQ | CHEK | Wed, Nov 10, 2021 | 19.60 | 20.00 | 17.20 | 18.86 | 1663 | NASDAQ | CHEK | Tue, Nov 9, 2021 | 20.20 | 20.80 | 20.00 | 20.40 | 1662 | NASDAQ | CHEK | Mon, Nov 8, 2021 | 20.60 | 21.20 | 20.20 | 21.00 | 1661 | NASDAQ | CHEK | Fri, Nov 5, 2021 | 22.20 | 22.40 | 21.10 | 21.60 | 1660 | NASDAQ | CHEK | Thu, Nov 4, 2021 | 20.40 | 22.60 | 19.62 | 22.00 | 1659 | NASDAQ | CHEK | Wed, Nov 3, 2021 | 22.40 | 22.60 | 20.20 | 20.60 | 1658 | NASDAQ | CHEK | Tue, Nov 2, 2021 | 19.27 | 26.20 | 18.80 | 22.20 | 1657 | NASDAQ | CHEK | Mon, Nov 1, 2021 | 18.00 | 19.20 | 17.40 | 18.65 | 1656 | NASDAQ | CHEK | Fri, Oct 29, 2021 | 17.80 | 18.40 | 17.60 | 17.90 | 1655 | NASDAQ | CHEK | Thu, Oct 28, 2021 | 17.28 | 17.97 | 17.24 | 17.83 | 1654 | NASDAQ | CHEK | Wed, Oct 27, 2021 | 17.58 | 17.79 | 17.22 | 17.63 | 1653 | NASDAQ | CHEK | Tue, Oct 26, 2021 | 17.64 | 18.20 | 17.00 | 18.00 | 1652 | NASDAQ | CHEK | Mon, Oct 25, 2021 | 17.63 | 18.20 | 17.60 | 17.93 | 1651 | NASDAQ | CHEK | Fri, Oct 22, 2021 | 17.80 | 18.40 | 17.40 | 17.81 | 1650 | NASDAQ | CHEK | Thu, Oct 21, 2021 | 18.89 | 19.60 | 17.80 | 18.61 | 1649 | NASDAQ | CHEK | Wed, Oct 20, 2021 | 16.80 | 19.66 | 16.61 | 19.00 | 1648 | NASDAQ | CHEK | Tue, Oct 19, 2021 | 16.80 | 16.80 | 16.30 | 16.66 | 1647 | NASDAQ | CHEK | Mon, Oct 18, 2021 | 16.80 | 17.00 | 16.20 | 16.80 | 1646 | NASDAQ | CHEK | Fri, Oct 15, 2021 | 16.80 | 16.88 | 16.22 | 16.70 | 1645 | NASDAQ | CHEK | Thu, Oct 14, 2021 | 17.00 | 17.20 | 16.16 | 16.49 | 1644 | NASDAQ | CHEK | Wed, Oct 13, 2021 | 17.38 | 17.40 | 16.53 | 17.02 | 1643 | NASDAQ | CHEK | Tue, Oct 12, 2021 | 16.90 | 17.40 | 16.60 | 17.10 | 1642 | NASDAQ | CHEK | Mon, Oct 11, 2021 | 17.00 | 17.26 | 16.60 | 16.77 | 1641 | NASDAQ | CHEK | Fri, Oct 8, 2021 | 16.84 | 17.40 | 16.40 | 17.18 | 1640 | NASDAQ | CHEK | Thu, Oct 7, 2021 | 16.70 | 16.88 | 16.30 | 16.82 | 1639 | NASDAQ | CHEK | Wed, Oct 6, 2021 | 16.40 | 16.70 | 16.10 | 16.62 | 1638 | NASDAQ | CHEK | Tue, Oct 5, 2021 | 16.80 | 17.04 | 16.02 | 16.57 | 1637 | NASDAQ | CHEK | Mon, Oct 4, 2021 | 17.60 | 17.64 | 16.42 | 16.61 | 1636 | NASDAQ | CHEK | Fri, Oct 1, 2021 | 17.20 | 17.70 | 17.17 | 17.55 | 1635 | NASDAQ | CHEK | Thu, Sep 30, 2021 | 17.61 | 18.00 | 17.20 | 17.53 | 1634 | NASDAQ | CHEK | Wed, Sep 29, 2021 | 18.57 | 19.07 | 17.50 | 17.74 | 1633 | NASDAQ | CHEK | Tue, Sep 28, 2021 | 19.40 | 19.60 | 18.40 | 18.79 | 1632 | NASDAQ | CHEK | Mon, Sep 27, 2021 | 19.50 | 19.70 | 19.28 | 19.53 | 1631 | NASDAQ | CHEK | Fri, Sep 24, 2021 | 19.60 | 20.00 | 19.40 | 19.58 | 1630 | NASDAQ | CHEK | Thu, Sep 23, 2021 | 20.60 | 20.60 | 19.62 | 19.80 | 1629 | NASDAQ | CHEK | Wed, Sep 22, 2021 | 18.60 | 21.40 | 18.60 | 20.60 | 1628 | NASDAQ | CHEK | Tue, Sep 21, 2021 | 18.97 | 19.20 | 18.70 | 18.70 | 1627 | NASDAQ | CHEK | Mon, Sep 20, 2021 | 19.50 | 19.54 | 18.50 | 19.09 | 1626 | NASDAQ | CHEK | Fri, Sep 17, 2021 | 20.20 | 20.40 | 19.52 | 19.80 | 1625 | NASDAQ | CHEK | Thu, Sep 16, 2021 | 20.00 | 20.39 | 20.00 | 20.20 | 1624 | NASDAQ | CHEK | Wed, Sep 15, 2021 | 20.00 | 20.20 | 20.00 | 20.00 | 1623 | NASDAQ | CHEK | Tue, Sep 14, 2021 | 20.40 | 21.00 | 20.00 | 20.10 | 1622 | NASDAQ | CHEK | Mon, Sep 13, 2021 | 21.00 | 21.00 | 20.00 | 20.20 | 1621 | NASDAQ | CHEK | Fri, Sep 10, 2021 | 21.17 | 21.20 | 20.40 | 20.60 | 1620 | NASDAQ | CHEK | Thu, Sep 9, 2021 | 21.00 | 21.20 | 20.80 | 21.00 | 1619 | NASDAQ | CHEK | Wed, Sep 8, 2021 | 21.17 | 21.40 | 20.60 | 21.40 | 1618 | NASDAQ | CHEK | Tue, Sep 7, 2021 | 22.20 | 22.20 | 21.00 | 21.20 | 1617 | NASDAQ | CHEK | Fri, Sep 3, 2021 | 22.00 | 22.00 | 21.60 | 21.80 | 1616 | NASDAQ | CHEK | Thu, Sep 2, 2021 | 21.60 | 21.60 | 21.40 | 21.60 | 1615 | NASDAQ | CHEK | Wed, Sep 1, 2021 | 22.00 | 22.00 | 21.20 | 21.40 | 1614 | NASDAQ | CHEK | Tue, Aug 31, 2021 | 21.60 | 21.80 | 20.20 | 21.60 | 1613 | NASDAQ | CHEK | Mon, Aug 30, 2021 | 20.00 | 21.80 | 20.00 | 21.40 | 1612 | NASDAQ | CHEK | Fri, Aug 27, 2021 | 19.80 | 19.80 | 19.40 | 19.72 | 1611 | NASDAQ | CHEK | Thu, Aug 26, 2021 | 19.64 | 20.20 | 19.60 | 19.80 | 1610 | NASDAQ | CHEK | Wed, Aug 25, 2021 | 20.00 | 20.80 | 19.60 | 19.60 | 1609 | NASDAQ | CHEK | Tue, Aug 24, 2021 | 19.98 | 20.60 | 19.76 | 20.20 | 1608 | NASDAQ | CHEK | Mon, Aug 23, 2021 | 18.85 | 19.80 | 18.85 | 19.68 | 1607 | NASDAQ | CHEK | Fri, Aug 20, 2021 | 19.52 | 19.52 | 18.84 | 19.24 | 1606 | NASDAQ | CHEK | Thu, Aug 19, 2021 | 19.20 | 19.94 | 19.00 | 19.48 | 1605 | NASDAQ | CHEK | Wed, Aug 18, 2021 | 18.76 | 19.40 | 18.40 | 18.80 | 1604 | NASDAQ | CHEK | Tue, Aug 17, 2021 | 20.00 | 20.20 | 18.21 | 18.48 | 1603 | NASDAQ | CHEK | Mon, Aug 16, 2021 | 21.40 | 21.44 | 20.20 | 20.40 | 1602 | NASDAQ | CHEK | Fri, Aug 13, 2021 | 21.80 | 21.80 | 21.40 | 21.60 | 1601 | NASDAQ | CHEK | Thu, Aug 12, 2021 | 22.00 | 22.20 | 21.60 | 21.60 | 1600 | NASDAQ | CHEK | Wed, Aug 11, 2021 | 22.40 | 22.40 | 21.80 | 21.80 | 1599 | NASDAQ | CHEK | Tue, Aug 10, 2021 | 22.40 | 23.00 | 22.20 | 22.40 | 1598 | NASDAQ | CHEK | Mon, Aug 9, 2021 | 22.40 | 23.20 | 22.00 | 22.40 | 1597 | NASDAQ | CHEK | Fri, Aug 6, 2021 | 21.80 | 22.60 | 21.40 | 22.60 | 1596 | NASDAQ | CHEK | Thu, Aug 5, 2021 | 21.40 | 22.00 | 21.20 | 21.80 | 1595 | NASDAQ | CHEK | Wed, Aug 4, 2021 | 22.00 | 22.20 | 21.40 | 21.80 | 1594 | NASDAQ | CHEK | Tue, Aug 3, 2021 | 22.40 | 22.40 | 21.80 | 22.00 | 1593 | NASDAQ | CHEK | Mon, Aug 2, 2021 | 22.20 | 22.40 | 21.80 | 22.20 | 1592 | NASDAQ | CHEK | Fri, Jul 30, 2021 | 22.40 | 23.00 | 21.80 | 22.00 | 1591 | NASDAQ | CHEK | Thu, Jul 29, 2021 | 22.00 | 22.80 | 21.60 | 22.40 | 1590 | NASDAQ | CHEK | Wed, Jul 28, 2021 | 22.00 | 22.20 | 21.60 | 21.80 | 1589 | NASDAQ | CHEK | Tue, Jul 27, 2021 | 21.60 | 22.20 | 21.20 | 22.00 | 1588 | NASDAQ | CHEK | Mon, Jul 26, 2021 | 22.00 | 22.60 | 21.40 | 21.80 | 1587 | NASDAQ | CHEK | Fri, Jul 23, 2021 | 22.24 | 22.80 | 21.80 | 22.40 | 1586 | NASDAQ | CHEK | Thu, Jul 22, 2021 | 22.80 | 23.00 | 22.20 | 22.80 | 1585 | NASDAQ | CHEK | Wed, Jul 21, 2021 | 22.40 | 23.00 | 22.20 | 23.00 | 1584 | NASDAQ | CHEK | Tue, Jul 20, 2021 | 22.20 | 22.60 | 21.60 | 22.60 | 1583 | NASDAQ | CHEK | Mon, Jul 19, 2021 | 22.00 | 22.40 | 21.60 | 22.00 | 1582 | NASDAQ | CHEK | Fri, Jul 16, 2021 | 23.20 | 23.20 | 22.00 | 22.20 | 1581 | NASDAQ | CHEK | Thu, Jul 15, 2021 | 21.60 | 23.40 | 21.20 | 23.20 | 1580 | NASDAQ | CHEK | Wed, Jul 14, 2021 | 22.60 | 22.60 | 21.20 | 21.60 | 1579 | NASDAQ | CHEK | Tue, Jul 13, 2021 | 22.60 | 23.00 | 21.60 | 22.20 | 1578 | NASDAQ | CHEK | Mon, Jul 12, 2021 | 22.20 | 23.50 | 22.20 | 23.20 | 1577 | NASDAQ | CHEK | Fri, Jul 9, 2021 | 23.00 | 23.10 | 22.20 | 23.00 | 1576 | NASDAQ | CHEK | Thu, Jul 8, 2021 | 21.20 | 22.60 | 21.20 | 22.40 | 1575 | NASDAQ | CHEK | Wed, Jul 7, 2021 | 23.00 | 23.20 | 21.20 | 23.20 | 1574 | NASDAQ | CHEK | Tue, Jul 6, 2021 | 23.80 | 24.20 | 22.80 | 23.00 | 1573 | NASDAQ | CHEK | Fri, Jul 2, 2021 | 24.21 | 24.60 | 23.20 | 24.00 | 1572 | NASDAQ | CHEK | Thu, Jul 1, 2021 | 25.60 | 26.60 | 23.60 | 24.40 | 1571 | NASDAQ | CHEK | Wed, Jun 30, 2021 | 21.20 | 29.00 | 21.00 | 25.60 | 1570 | NASDAQ | CHEK | Tue, Jun 29, 2021 | 31.20 | 31.60 | 30.00 | 30.20 | 1569 | NASDAQ | CHEK | Mon, Jun 28, 2021 | 31.60 | 31.60 | 30.60 | 31.60 | 1568 | NASDAQ | CHEK | Fri, Jun 25, 2021 | 32.50 | 32.50 | 31.00 | 31.20 | 1567 | NASDAQ | CHEK | Thu, Jun 24, 2021 | 33.00 | 33.80 | 32.60 | 32.80 | 1566 | NASDAQ | CHEK | Wed, Jun 23, 2021 | 32.00 | 33.40 | 31.60 | 33.40 | 1565 | NASDAQ | CHEK | Tue, Jun 22, 2021 | 31.60 | 32.60 | 30.80 | 32.40 | 1564 | NASDAQ | CHEK | Mon, Jun 21, 2021 | 32.80 | 32.80 | 31.40 | 32.20 | 1563 | NASDAQ | CHEK | Fri, Jun 18, 2021 | 32.80 | 33.00 | 32.20 | 32.60 | 1562 | NASDAQ | CHEK | Thu, Jun 17, 2021 | 32.00 | 33.60 | 31.21 | 32.80 | 1561 | NASDAQ | CHEK | Wed, Jun 16, 2021 | 32.40 | 33.00 | 31.20 | 32.00 | 1560 | NASDAQ | CHEK | Tue, Jun 15, 2021 | 34.20 | 34.20 | 32.20 | 32.40 | 1559 | NASDAQ | CHEK | Mon, Jun 14, 2021 | 34.00 | 34.40 | 33.30 | 34.00 | 1558 | NASDAQ | CHEK | Fri, Jun 11, 2021 | 33.00 | 34.00 | 32.60 | 33.40 | 1557 | NASDAQ | CHEK | Thu, Jun 10, 2021 | 32.40 | 33.80 | 31.00 | 33.60 | 1556 | NASDAQ | CHEK | Wed, Jun 9, 2021 | 34.00 | 34.20 | 32.00 | 32.40 | 1555 | NASDAQ | CHEK | Tue, Jun 8, 2021 | 36.80 | 38.18 | 32.20 | 33.40 | 1554 | NASDAQ | CHEK | Mon, Jun 7, 2021 | 31.40 | 34.80 | 31.40 | 34.60 | 1553 | NASDAQ | CHEK | Fri, Jun 4, 2021 | 30.80 | 32.00 | 30.60 | 31.40 | 1552 | NASDAQ | CHEK | Thu, Jun 3, 2021 | 31.20 | 32.00 | 30.60 | 30.80 | 1551 | NASDAQ | CHEK | Wed, Jun 2, 2021 | 32.20 | 33.40 | 31.40 | 32.00 | 1550 | NASDAQ | CHEK | Tue, Jun 1, 2021 | 31.80 | 32.60 | 30.60 | 32.40 | 1549 | NASDAQ | CHEK | Fri, May 28, 2021 | 31.03 | 33.00 | 31.02 | 32.00 | 1548 | NASDAQ | CHEK | Thu, May 27, 2021 | 32.20 | 32.20 | 31.00 | 31.40 | 1547 | NASDAQ | CHEK | Wed, May 26, 2021 | 29.00 | 32.60 | 29.00 | 32.40 | 1546 | NASDAQ | CHEK | Tue, May 25, 2021 | 29.80 | 31.40 | 29.50 | 29.80 | 1545 | NASDAQ | CHEK | Mon, May 24, 2021 | 31.00 | 31.20 | 29.40 | 30.20 | 1544 | NASDAQ | CHEK | Fri, May 21, 2021 | 29.60 | 33.60 | 28.40 | 30.80 | 1543 | NASDAQ | CHEK | Thu, May 20, 2021 | 29.80 | 30.10 | 28.40 | 28.80 | 1542 | NASDAQ | CHEK | Wed, May 19, 2021 | 28.40 | 29.80 | 28.00 | 29.80 | 1541 | NASDAQ | CHEK | Tue, May 18, 2021 | 27.40 | 30.00 | 27.40 | 29.60 | 1540 | NASDAQ | CHEK | Mon, May 17, 2021 | 26.60 | 27.60 | 26.40 | 27.40 | 1539 | NASDAQ | CHEK | Fri, May 14, 2021 | 25.80 | 26.80 | 25.40 | 26.60 | 1538 | NASDAQ | CHEK | Thu, May 13, 2021 | 27.00 | 28.00 | 24.60 | 25.20 | 1537 | NASDAQ | CHEK | Wed, May 12, 2021 | 28.20 | 29.20 | 26.40 | 26.80 | 1536 | NASDAQ | CHEK | Tue, May 11, 2021 | 26.60 | 29.97 | 26.40 | 28.80 | 1535 | NASDAQ | CHEK | Mon, May 10, 2021 | 30.20 | 30.20 | 28.00 | 28.60 | 1534 | NASDAQ | CHEK | Fri, May 7, 2021 | 29.20 | 30.80 | 29.00 | 29.60 | 1533 | NASDAQ | CHEK | Thu, May 6, 2021 | 31.00 | 31.00 | 28.80 | 29.40 | 1532 | NASDAQ | CHEK | Wed, May 5, 2021 | 31.60 | 31.80 | 29.90 | 30.60 | 1531 | NASDAQ | CHEK | Tue, May 4, 2021 | 30.80 | 31.80 | 28.60 | 31.60 | 1530 | NASDAQ | CHEK | Mon, May 3, 2021 | 31.80 | 32.00 | 30.40 | 31.00 | 1529 | NASDAQ | CHEK | Fri, Apr 30, 2021 | 31.60 | 33.20 | 31.40 | 31.80 | 1528 | NASDAQ | CHEK | Thu, Apr 29, 2021 | 33.20 | 33.23 | 31.60 | 32.80 | 1527 | NASDAQ | CHEK | Wed, Apr 28, 2021 | 31.40 | 33.40 | 30.20 | 33.20 | 1526 | NASDAQ | CHEK | Tue, Apr 27, 2021 | 32.97 | 33.20 | 31.10 | 31.80 | 1525 | NASDAQ | CHEK | Mon, Apr 26, 2021 | 31.40 | 33.00 | 30.20 | 32.60 | 1524 | NASDAQ | CHEK | Fri, Apr 23, 2021 | 30.20 | 31.80 | 30.00 | 31.20 | 1523 | NASDAQ | CHEK | Thu, Apr 22, 2021 | 29.80 | 31.40 | 29.60 | 30.60 | 1522 | NASDAQ | CHEK | Wed, Apr 21, 2021 | 27.20 | 30.20 | 27.00 | 29.80 | 1521 | NASDAQ | CHEK | Tue, Apr 20, 2021 | 28.00 | 29.00 | 27.40 | 28.00 | 1520 | NASDAQ | CHEK | Mon, Apr 19, 2021 | 29.60 | 30.20 | 28.00 | 29.40 | 1519 | NASDAQ | CHEK | Fri, Apr 16, 2021 | 27.21 | 30.40 | 26.20 | 29.40 | 1518 | NASDAQ | CHEK | Thu, Apr 15, 2021 | 30.03 | 30.20 | 27.40 | 27.80 | 1517 | NASDAQ | CHEK | Wed, Apr 14, 2021 | 30.80 | 31.60 | 29.50 | 29.80 | 1516 | NASDAQ | CHEK | Tue, Apr 13, 2021 | 31.00 | 31.60 | 29.20 | 31.60 | 1515 | NASDAQ | CHEK | Mon, Apr 12, 2021 | 34.00 | 34.60 | 31.00 | 31.00 | 1514 | NASDAQ | CHEK | Fri, Apr 9, 2021 | 34.00 | 35.20 | 33.50 | 34.60 | 1513 | NASDAQ | CHEK | Thu, Apr 8, 2021 | 34.00 | 34.60 | 33.40 | 34.10 | 1512 | NASDAQ | CHEK | Wed, Apr 7, 2021 | 35.40 | 35.60 | 33.60 | 34.00 | 1511 | NASDAQ | CHEK | Tue, Apr 6, 2021 | 35.40 | 37.40 | 34.60 | 36.00 | 1510 | NASDAQ | CHEK | Mon, Apr 5, 2021 | 37.60 | 37.60 | 35.20 | 35.20 | 1509 | NASDAQ | CHEK | Thu, Apr 1, 2021 | 36.00 | 37.60 | 35.40 | 37.20 | 1508 | NASDAQ | CHEK | Wed, Mar 31, 2021 | 34.00 | 36.40 | 33.80 | 35.20 | 1507 | NASDAQ | CHEK | Tue, Mar 30, 2021 | 34.00 | 35.20 | 32.40 | 34.40 | 1506 | NASDAQ | CHEK | Mon, Mar 29, 2021 | 36.00 | 36.80 | 33.60 | 34.20 | 1505 | NASDAQ | CHEK | Fri, Mar 26, 2021 | 37.62 | 37.80 | 34.40 | 36.00 | 1504 | NASDAQ | CHEK | Thu, Mar 25, 2021 | 33.00 | 37.60 | 33.00 | 37.40 | 1503 | NASDAQ | CHEK | Wed, Mar 24, 2021 | 37.38 | 39.20 | 34.60 | 35.20 | 1502 | NASDAQ | CHEK | Tue, Mar 23, 2021 | 39.62 | 39.80 | 36.40 | 37.00 | 1501 | NASDAQ | CHEK | Mon, Mar 22, 2021 | 43.00 | 43.80 | 39.80 | 40.60 | 1500 | NASDAQ | CHEK | Fri, Mar 19, 2021 | 41.93 | 45.90 | 40.40 | 43.00 | 1499 | NASDAQ | CHEK | Thu, Mar 18, 2021 | 42.65 | 44.80 | 40.00 | 40.80 | 1498 | NASDAQ | CHEK | Wed, Mar 17, 2021 | 44.80 | 49.20 | 44.20 | 45.40 | 1497 | NASDAQ | CHEK | Tue, Mar 16, 2021 | 55.20 | 55.80 | 46.00 | 47.80 | 1496 | NASDAQ | CHEK | Mon, Mar 15, 2021 | 81.00 | 89.80 | 60.40 | 61.40 | 1495 | NASDAQ | CHEK | Fri, Mar 12, 2021 | 28.40 | 31.20 | 28.00 | 30.60 | 1494 | NASDAQ | CHEK | Thu, Mar 11, 2021 | 28.00 | 30.60 | 26.80 | 30.60 | 1493 | NASDAQ | CHEK | Wed, Mar 10, 2021 | 28.20 | 28.60 | 26.20 | 27.00 | 1492 | NASDAQ | CHEK | Tue, Mar 9, 2021 | 26.60 | 27.80 | 24.90 | 27.80 | 1491 | NASDAQ | CHEK | Mon, Mar 8, 2021 | 25.00 | 27.00 | 23.20 | 25.20 | 1490 | NASDAQ | CHEK | Fri, Mar 5, 2021 | 23.40 | 26.00 | 20.00 | 25.00 | 1489 | NASDAQ | CHEK | Thu, Mar 4, 2021 | 25.60 | 27.00 | 21.00 | 23.00 | 1488 | NASDAQ | CHEK | Wed, Mar 3, 2021 | 29.00 | 29.60 | 27.00 | 27.60 | 1487 | NASDAQ | CHEK | Tue, Mar 2, 2021 | 29.40 | 31.00 | 28.40 | 28.80 | 1486 | NASDAQ | CHEK | Mon, Mar 1, 2021 | 28.60 | 29.80 | 27.63 | 28.80 | 1485 | NASDAQ | CHEK | Fri, Feb 26, 2021 | 28.20 | 29.60 | 26.30 | 27.40 | 1484 | NASDAQ | CHEK | Thu, Feb 25, 2021 | 30.00 | 31.20 | 27.40 | 28.20 | 1483 | NASDAQ | CHEK | Wed, Feb 24, 2021 | 29.40 | 32.00 | 29.00 | 30.60 | 1482 | NASDAQ | CHEK | Tue, Feb 23, 2021 | 30.00 | 31.40 | 24.20 | 28.60 | 1481 | NASDAQ | CHEK | Mon, Feb 22, 2021 | 35.40 | 36.60 | 32.00 | 32.60 | 1480 | NASDAQ | CHEK | Fri, Feb 19, 2021 | 38.30 | 38.80 | 36.60 | 37.00 | 1479 | NASDAQ | CHEK | Thu, Feb 18, 2021 | 40.60 | 43.40 | 36.00 | 36.60 | 1478 | NASDAQ | CHEK | Wed, Feb 17, 2021 | 39.40 | 47.80 | 36.03 | 46.60 | 1477 | NASDAQ | CHEK | Tue, Feb 16, 2021 | 37.40 | 37.60 | 34.20 | 36.00 | 1476 | NASDAQ | CHEK | Fri, Feb 12, 2021 | 34.60 | 37.80 | 33.60 | 36.20 | 1475 | NASDAQ | CHEK | Thu, Feb 11, 2021 | 40.20 | 40.20 | 35.20 | 35.60 | 1474 | NASDAQ | CHEK | Wed, Feb 10, 2021 | 40.00 | 40.40 | 34.20 | 37.80 | 1473 | NASDAQ | CHEK | Tue, Feb 9, 2021 | 41.99 | 42.00 | 38.00 | 39.40 | 1472 | NASDAQ | CHEK | Mon, Feb 8, 2021 | 34.80 | 37.00 | 33.60 | 36.40 | 1471 | NASDAQ | CHEK | Fri, Feb 5, 2021 | 33.80 | 33.80 | 32.00 | 32.40 | 1470 | NASDAQ | CHEK | Thu, Feb 4, 2021 | 34.60 | 34.60 | 32.40 | 33.40 | 1469 | NASDAQ | CHEK | Wed, Feb 3, 2021 | 32.40 | 35.00 | 32.00 | 33.80 | 1468 | NASDAQ | CHEK | Tue, Feb 2, 2021 | 32.00 | 32.80 | 30.20 | 31.80 | 1467 | NASDAQ | CHEK | Mon, Feb 1, 2021 | 32.20 | 32.80 | 29.20 | 31.00 | 1466 | NASDAQ | CHEK | Fri, Jan 29, 2021 | 32.10 | 32.40 | 29.00 | 30.60 | 1465 | NASDAQ | CHEK | Thu, Jan 28, 2021 | 31.80 | 33.80 | 31.00 | 31.20 | 1464 | NASDAQ | CHEK | Wed, Jan 27, 2021 | 32.74 | 35.40 | 31.60 | 32.20 | 1463 | NASDAQ | CHEK | Tue, Jan 26, 2021 | 42.40 | 42.80 | 36.00 | 36.00 | 1462 | NASDAQ | CHEK | Mon, Jan 25, 2021 | 33.00 | 45.40 | 31.20 | 41.80 | 1461 | NASDAQ | CHEK | Fri, Jan 22, 2021 | 31.44 | 34.40 | 30.00 | 33.80 | 1460 | NASDAQ | CHEK | Thu, Jan 21, 2021 | 32.60 | 33.00 | 31.20 | 32.60 | 1459 | NASDAQ | CHEK | Wed, Jan 20, 2021 | 35.00 | 35.20 | 31.60 | 33.20 | 1458 | NASDAQ | CHEK | Tue, Jan 19, 2021 | 35.60 | 35.80 | 32.40 | 34.80 | 1457 | NASDAQ | CHEK | Fri, Jan 15, 2021 | 38.00 | 38.40 | 31.40 | 34.00 | 1456 | NASDAQ | CHEK | Thu, Jan 14, 2021 | 30.60 | 38.40 | 30.00 | 37.00 | 1455 | NASDAQ | CHEK | Wed, Jan 13, 2021 | 31.66 | 31.79 | 29.00 | 30.00 | 1454 | NASDAQ | CHEK | Tue, Jan 12, 2021 | 32.50 | 32.80 | 30.40 | 31.60 | 1453 | NASDAQ | CHEK | Mon, Jan 11, 2021 | 32.12 | 35.00 | 30.00 | 32.80 | 1452 | NASDAQ | CHEK | Fri, Jan 8, 2021 | 34.05 | 34.40 | 31.60 | 33.20 | 1451 | NASDAQ | CHEK | Thu, Jan 7, 2021 | 34.20 | 36.20 | 31.00 | 34.60 | 1450 | NASDAQ | CHEK | Wed, Jan 6, 2021 | 36.40 | 38.00 | 28.60 | 31.00 | 1449 | NASDAQ | CHEK | Tue, Jan 5, 2021 | 48.00 | 58.60 | 33.40 | 34.60 | 1448 | NASDAQ | CHEK | Mon, Jan 4, 2021 | 14.43 | 33.00 | 13.34 | 29.00 | 1447 | NASDAQ | CHEK | Thu, Dec 31, 2020 | 8.01 | 10.60 | 7.62 | 9.20 | 1446 | NASDAQ | CHEK | Wed, Dec 30, 2020 | 7.60 | 8.90 | 7.35 | 8.62 | 1445 | NASDAQ | CHEK | Tue, Dec 29, 2020 | 7.20 | 7.30 | 6.70 | 6.90 | 1444 | NASDAQ | CHEK | Mon, Dec 28, 2020 | 7.70 | 7.80 | 7.20 | 7.40 | 1443 | NASDAQ | CHEK | Thu, Dec 24, 2020 | 8.40 | 8.60 | 7.28 | 7.72 | 1442 | NASDAQ | CHEK | Wed, Dec 23, 2020 | 7.50 | 8.40 | 6.82 | 7.79 | 1441 | NASDAQ | CHEK | Tue, Dec 22, 2020 | 6.33 | 7.20 | 6.14 | 6.78 | 1440 | NASDAQ | CHEK | Mon, Dec 21, 2020 | 6.30 | 6.40 | 6.10 | 6.36 | 1439 | NASDAQ | CHEK | Fri, Dec 18, 2020 | 6.37 | 6.60 | 6.30 | 6.38 | 1438 | NASDAQ | CHEK | Thu, Dec 17, 2020 | 6.50 | 6.60 | 6.30 | 6.32 | 1437 | NASDAQ | CHEK | Wed, Dec 16, 2020 | 6.60 | 6.60 | 6.42 | 6.60 | 1436 | NASDAQ | CHEK | Tue, Dec 15, 2020 | 7.00 | 7.17 | 6.40 | 6.54 | 1435 | NASDAQ | CHEK | Mon, Dec 14, 2020 | 6.80 | 7.00 | 6.62 | 6.80 | 1434 | NASDAQ | CHEK | Fri, Dec 11, 2020 | 6.60 | 6.92 | 6.30 | 6.80 | 1433 | NASDAQ | CHEK | Thu, Dec 10, 2020 | 7.20 | 7.40 | 7.06 | 7.18 | 1432 | NASDAQ | CHEK | Wed, Dec 9, 2020 | 7.40 | 7.75 | 7.02 | 7.60 | 1431 | NASDAQ | CHEK | Tue, Dec 8, 2020 | 7.40 | 7.50 | 7.10 | 7.13 | 1430 | NASDAQ | CHEK | Mon, Dec 7, 2020 | 7.58 | 7.58 | 7.26 | 7.30 | 1429 | NASDAQ | CHEK | Fri, Dec 4, 2020 | 7.28 | 7.57 | 7.20 | 7.42 | 1428 | NASDAQ | CHEK | Thu, Dec 3, 2020 | 7.79 | 7.79 | 7.22 | 7.36 | 1427 | NASDAQ | CHEK | Wed, Dec 2, 2020 | 7.80 | 7.84 | 7.24 | 7.72 | 1426 | NASDAQ | CHEK | Tue, Dec 1, 2020 | 8.40 | 8.40 | 7.60 | 7.80 | 1425 | NASDAQ | CHEK | Mon, Nov 30, 2020 | 8.60 | 9.00 | 7.22 | 7.80 | 1424 | NASDAQ | CHEK | Fri, Nov 27, 2020 | 7.80 | 8.40 | 7.62 | 8.20 | 1423 | NASDAQ | CHEK | Wed, Nov 25, 2020 | 7.00 | 8.00 | 6.80 | 7.88 | 1422 | NASDAQ | CHEK | Tue, Nov 24, 2020 | 7.40 | 7.60 | 6.80 | 7.20 | 1421 | NASDAQ | CHEK | Mon, Nov 23, 2020 | 7.64 | 7.76 | 7.19 | 7.30 | 1420 | NASDAQ | CHEK | Fri, Nov 20, 2020 | 6.40 | 7.70 | 6.20 | 7.10 | 1419 | NASDAQ | CHEK | Thu, Nov 19, 2020 | 6.20 | 6.40 | 5.72 | 6.07 | 1418 | NASDAQ | CHEK | Wed, Nov 18, 2020 | 5.80 | 6.38 | 5.61 | 6.12 | 1417 | NASDAQ | CHEK | Tue, Nov 17, 2020 | 5.81 | 5.81 | 5.43 | 5.65 | 1416 | NASDAQ | CHEK | Mon, Nov 16, 2020 | 5.94 | 6.00 | 5.54 | 5.71 | 1415 | NASDAQ | CHEK | Fri, Nov 13, 2020 | 5.90 | 6.30 | 5.80 | 5.95 | 1414 | NASDAQ | CHEK | Thu, Nov 12, 2020 | 6.30 | 6.40 | 5.58 | 5.88 | 1413 | NASDAQ | CHEK | Wed, Nov 11, 2020 | 5.80 | 6.20 | 5.60 | 6.20 | 1412 | NASDAQ | CHEK | Tue, Nov 10, 2020 | 5.60 | 6.00 | 5.42 | 5.64 | 1411 | NASDAQ | CHEK | Mon, Nov 9, 2020 | 5.39 | 5.58 | 5.27 | 5.45 | 1410 | NASDAQ | CHEK | Fri, Nov 6, 2020 | 5.10 | 5.40 | 5.02 | 5.40 | 1409 | NASDAQ | CHEK | Thu, Nov 5, 2020 | 4.88 | 5.40 | 4.88 | 5.30 | 1408 | NASDAQ | CHEK | Wed, Nov 4, 2020 | 5.40 | 5.56 | 4.86 | 5.28 | 1407 | NASDAQ | CHEK | Tue, Nov 3, 2020 | 5.60 | 5.80 | 5.31 | 5.40 | 1406 | NASDAQ | CHEK | Mon, Nov 2, 2020 | 6.02 | 6.22 | 5.41 | 5.60 | 1405 | NASDAQ | CHEK | Fri, Oct 30, 2020 | 6.10 | 6.39 | 6.00 | 6.14 | 1404 | NASDAQ | CHEK | Thu, Oct 29, 2020 | 6.50 | 6.50 | 6.02 | 6.40 | 1403 | NASDAQ | CHEK | Wed, Oct 28, 2020 | 6.60 | 6.60 | 5.90 | 6.30 | 1402 | NASDAQ | CHEK | Tue, Oct 27, 2020 | 6.46 | 6.49 | 6.25 | 6.28 | 1401 | NASDAQ | CHEK | Mon, Oct 26, 2020 | 6.60 | 6.80 | 6.25 | 6.60 | 1400 | NASDAQ | CHEK | Fri, Oct 23, 2020 | 6.30 | 6.94 | 6.30 | 6.68 | 1399 | NASDAQ | CHEK | Thu, Oct 22, 2020 | 6.25 | 6.78 | 6.25 | 6.78 | 1398 | NASDAQ | CHEK | Wed, Oct 21, 2020 | 7.03 | 7.10 | 6.80 | 6.84 | 1397 | NASDAQ | CHEK | Tue, Oct 20, 2020 | 7.20 | 7.20 | 6.92 | 7.17 | 1396 | NASDAQ | CHEK | Mon, Oct 19, 2020 | 7.11 | 7.30 | 7.01 | 7.17 | 1395 | NASDAQ | CHEK | Fri, Oct 16, 2020 | 7.02 | 7.32 | 6.88 | 7.18 | 1394 | NASDAQ | CHEK | Thu, Oct 15, 2020 | 7.40 | 7.40 | 6.90 | 7.21 | 1393 | NASDAQ | CHEK | Wed, Oct 14, 2020 | 7.34 | 7.38 | 7.01 | 7.31 | 1392 | NASDAQ | CHEK | Tue, Oct 13, 2020 | 7.46 | 7.59 | 7.20 | 7.34 | 1391 | NASDAQ | CHEK | Mon, Oct 12, 2020 | 7.60 | 7.68 | 7.42 | 7.44 | 1390 | NASDAQ | CHEK | Fri, Oct 9, 2020 | 7.80 | 7.80 | 7.30 | 7.50 | 1389 | NASDAQ | CHEK | Thu, Oct 8, 2020 | 7.40 | 7.80 | 7.18 | 7.77 | 1388 | NASDAQ | CHEK | Wed, Oct 7, 2020 | 7.20 | 7.40 | 7.02 | 7.40 | 1387 | NASDAQ | CHEK | Tue, Oct 6, 2020 | 7.15 | 7.30 | 7.04 | 7.19 | 1386 | NASDAQ | CHEK | Mon, Oct 5, 2020 | 7.03 | 7.28 | 6.84 | 7.28 | 1385 | NASDAQ | CHEK | Fri, Oct 2, 2020 | 7.06 | 7.22 | 6.80 | 7.20 | 1384 | NASDAQ | CHEK | Thu, Oct 1, 2020 | 7.38 | 7.38 | 6.80 | 7.19 | 1383 | NASDAQ | CHEK | Wed, Sep 30, 2020 | 7.02 | 7.35 | 7.00 | 7.21 | 1382 | NASDAQ | CHEK | Tue, Sep 29, 2020 | 7.20 | 7.20 | 6.61 | 7.00 | 1381 | NASDAQ | CHEK | Mon, Sep 28, 2020 | 6.86 | 7.00 | 6.62 | 7.00 | 1380 | NASDAQ | CHEK | Fri, Sep 25, 2020 | 6.80 | 6.91 | 6.26 | 6.80 | 1379 | NASDAQ | CHEK | Thu, Sep 24, 2020 | 6.80 | 6.82 | 6.25 | 6.46 | 1378 | NASDAQ | CHEK | Wed, Sep 23, 2020 | 6.90 | 7.14 | 6.60 | 6.80 | 1377 | NASDAQ | CHEK | Tue, Sep 22, 2020 | 7.20 | 7.31 | 6.82 | 7.00 | 1376 | NASDAQ | CHEK | Mon, Sep 21, 2020 | 7.36 | 7.36 | 7.00 | 7.08 | 1375 | NASDAQ | CHEK | Fri, Sep 18, 2020 | 7.47 | 7.59 | 7.16 | 7.38 | 1374 | NASDAQ | CHEK | Thu, Sep 17, 2020 | 7.00 | 7.50 | 7.00 | 7.40 | 1373 | NASDAQ | CHEK | Wed, Sep 16, 2020 | 7.48 | 7.80 | 6.83 | 7.32 | 1372 | NASDAQ | CHEK | Tue, Sep 15, 2020 | 7.20 | 7.72 | 7.10 | 7.56 | 1371 | NASDAQ | CHEK | Mon, Sep 14, 2020 | 7.08 | 7.20 | 6.85 | 7.10 | 1370 | NASDAQ | CHEK | Fri, Sep 11, 2020 | 7.10 | 7.20 | 6.76 | 7.12 | 1369 | NASDAQ | CHEK | Thu, Sep 10, 2020 | 7.14 | 7.78 | 7.05 | 7.28 | 1368 | NASDAQ | CHEK | Wed, Sep 9, 2020 | 7.11 | 7.45 | 7.00 | 7.30 | 1367 | NASDAQ | CHEK | Tue, Sep 8, 2020 | 7.22 | 8.30 | 6.76 | 7.79 | 1366 | NASDAQ | CHEK | Fri, Sep 4, 2020 | 6.80 | 8.98 | 6.00 | 7.80 | 1365 | NASDAQ | CHEK | Thu, Sep 3, 2020 | 6.62 | 7.38 | 6.60 | 6.95 | 1364 | NASDAQ | CHEK | Wed, Sep 2, 2020 | 7.39 | 7.40 | 6.60 | 6.91 | 1363 | NASDAQ | CHEK | Tue, Sep 1, 2020 | 7.94 | 7.94 | 7.30 | 7.50 | 1362 | NASDAQ | CHEK | Mon, Aug 31, 2020 | 8.00 | 8.10 | 7.70 | 7.89 | 1361 | NASDAQ | CHEK | Fri, Aug 28, 2020 | 7.98 | 8.04 | 7.70 | 7.70 | 1360 | NASDAQ | CHEK | Thu, Aug 27, 2020 | 8.38 | 8.38 | 7.64 | 7.90 | 1359 | NASDAQ | CHEK | Wed, Aug 26, 2020 | 8.40 | 8.50 | 8.00 | 8.11 | 1358 | NASDAQ | CHEK | Tue, Aug 25, 2020 | 7.94 | 8.40 | 7.90 | 8.20 | 1357 | NASDAQ | CHEK | Mon, Aug 24, 2020 | 8.40 | 8.50 | 7.00 | 7.90 | 1356 | NASDAQ | CHEK | Fri, Aug 21, 2020 | 8.80 | 9.00 | 8.45 | 8.71 | 1355 | NASDAQ | CHEK | Thu, Aug 20, 2020 | 9.20 | 9.40 | 8.82 | 8.91 | 1354 | NASDAQ | CHEK | Wed, Aug 19, 2020 | 10.35 | 10.35 | 9.20 | 9.22 | 1353 | NASDAQ | CHEK | Tue, Aug 18, 2020 | 9.60 | 9.70 | 9.13 | 9.14 | 1352 | NASDAQ | CHEK | Mon, Aug 17, 2020 | 9.60 | 9.80 | 9.41 | 9.46 | 1351 | NASDAQ | CHEK | Fri, Aug 14, 2020 | 10.05 | 10.24 | 9.00 | 9.42 | 1350 | NASDAQ | CHEK | Thu, Aug 13, 2020 | 11.32 | 11.32 | 10.02 | 10.21 | 1349 | NASDAQ | CHEK | Wed, Aug 12, 2020 | 12.00 | 12.00 | 11.20 | 11.32 | 1348 | NASDAQ | CHEK | Tue, Aug 11, 2020 | 12.24 | 12.40 | 11.81 | 11.88 | 1347 | NASDAQ | CHEK | Mon, Aug 10, 2020 | 12.28 | 12.78 | 12.16 | 12.34 | 1346 | NASDAQ | CHEK | Fri, Aug 7, 2020 | 13.11 | 13.40 | 12.26 | 12.58 | 1345 | NASDAQ | CHEK | Thu, Aug 6, 2020 | 13.42 | 13.70 | 12.60 | 13.00 | 1344 | NASDAQ | CHEK | Wed, Aug 5, 2020 | 12.20 | 13.20 | 12.00 | 12.56 | 1343 | NASDAQ | CHEK | Tue, Aug 4, 2020 | 12.00 | 12.50 | 11.82 | 12.15 | 1342 | NASDAQ | CHEK | Mon, Aug 3, 2020 | 12.00 | 12.06 | 11.50 | 11.74 | 1341 | NASDAQ | CHEK | Fri, Jul 31, 2020 | 11.93 | 11.94 | 11.32 | 11.77 | 1340 | NASDAQ | CHEK | Thu, Jul 30, 2020 | 11.70 | 12.18 | 11.60 | 11.98 | 1339 | NASDAQ | CHEK | Wed, Jul 29, 2020 | 12.41 | 12.76 | 11.62 | 11.63 | 1338 | NASDAQ | CHEK | Tue, Jul 28, 2020 | 11.78 | 13.39 | 11.40 | 12.76 | 1337 | NASDAQ | CHEK | Mon, Jul 27, 2020 | 11.90 | 12.20 | 11.60 | 12.16 | 1336 | NASDAQ | CHEK | Fri, Jul 24, 2020 | 12.00 | 12.00 | 11.06 | 11.90 | 1335 | NASDAQ | CHEK | Thu, Jul 23, 2020 | 15.80 | 15.80 | 11.60 | 12.08 | 1334 | NASDAQ | CHEK | Wed, Jul 22, 2020 | 17.00 | 17.20 | 14.08 | 15.10 | 1333 | NASDAQ | CHEK | Tue, Jul 21, 2020 | 13.20 | 17.07 | 13.00 | 16.00 | 1332 | NASDAQ | CHEK | Mon, Jul 20, 2020 | 14.27 | 14.34 | 12.24 | 12.67 | 1331 | NASDAQ | CHEK | Fri, Jul 17, 2020 | 11.90 | 15.20 | 11.84 | 13.60 | 1330 | NASDAQ | CHEK | Thu, Jul 16, 2020 | 11.40 | 12.42 | 11.20 | 11.84 | 1329 | NASDAQ | CHEK | Wed, Jul 15, 2020 | 11.40 | 11.60 | 10.81 | 11.44 | 1328 | NASDAQ | CHEK | Tue, Jul 14, 2020 | 11.64 | 12.00 | 10.60 | 11.80 | 1327 | NASDAQ | CHEK | Mon, Jul 13, 2020 | 11.72 | 12.60 | 11.44 | 11.61 | 1326 | NASDAQ | CHEK | Fri, Jul 10, 2020 | 11.40 | 12.80 | 11.16 | 11.81 | 1325 | NASDAQ | CHEK | Thu, Jul 9, 2020 | 11.64 | 11.64 | 11.06 | 11.36 | 1324 | NASDAQ | CHEK | Wed, Jul 8, 2020 | 11.40 | 11.40 | 11.00 | 11.31 | 1323 | NASDAQ | CHEK | Tue, Jul 7, 2020 | 10.93 | 11.40 | 10.93 | 11.13 | 1322 | NASDAQ | CHEK | Mon, Jul 6, 2020 | 11.20 | 11.86 | 11.04 | 11.40 | 1321 | NASDAQ | CHEK | Thu, Jul 2, 2020 | 11.45 | 11.98 | 11.10 | 11.39 | 1320 | NASDAQ | CHEK | Wed, Jul 1, 2020 | 12.10 | 13.19 | 11.24 | 12.18 | 1319 | NASDAQ | CHEK | Tue, Jun 30, 2020 | 11.38 | 12.20 | 11.00 | 11.93 | 1318 | NASDAQ | CHEK | Mon, Jun 29, 2020 | 10.79 | 11.60 | 10.50 | 11.15 | 1317 | NASDAQ | CHEK | Fri, Jun 26, 2020 | 10.91 | 11.10 | 10.62 | 10.81 | 1316 | NASDAQ | CHEK | Thu, Jun 25, 2020 | 10.60 | 11.12 | 10.60 | 10.86 | 1315 | NASDAQ | CHEK | Wed, Jun 24, 2020 | 11.42 | 11.56 | 10.70 | 11.18 | 1314 | NASDAQ | CHEK | Tue, Jun 23, 2020 | 12.20 | 12.20 | 11.16 | 11.80 | 1313 | NASDAQ | CHEK | Mon, Jun 22, 2020 | 10.90 | 13.00 | 10.80 | 12.57 | 1312 | NASDAQ | CHEK | Fri, Jun 19, 2020 | 10.70 | 11.20 | 10.56 | 10.70 | 1311 | NASDAQ | CHEK | Thu, Jun 18, 2020 | 10.60 | 11.00 | 10.50 | 10.69 | 1310 | NASDAQ | CHEK | Wed, Jun 17, 2020 | 11.26 | 11.26 | 10.62 | 11.00 | 1309 | NASDAQ | CHEK | Tue, Jun 16, 2020 | 11.43 | 11.55 | 11.04 | 11.26 | 1308 | NASDAQ | CHEK | Mon, Jun 15, 2020 | 10.80 | 11.31 | 10.24 | 11.04 | 1307 | NASDAQ | CHEK | Fri, Jun 12, 2020 | 12.00 | 12.00 | 10.30 | 10.80 | 1306 | NASDAQ | CHEK | Thu, Jun 11, 2020 | 12.00 | 12.40 | 11.04 | 11.13 | 1305 | NASDAQ | CHEK | Wed, Jun 10, 2020 | 14.00 | 14.60 | 12.20 | 12.62 | 1304 | NASDAQ | CHEK | Tue, Jun 9, 2020 | 11.60 | 14.39 | 11.42 | 13.80 | 1303 | NASDAQ | CHEK | Mon, Jun 8, 2020 | 11.80 | 11.98 | 11.00 | 11.54 | 1302 | NASDAQ | CHEK | Fri, Jun 5, 2020 | 11.60 | 11.70 | 11.03 | 11.20 | 1301 | NASDAQ | CHEK | Thu, Jun 4, 2020 | 10.40 | 11.80 | 10.32 | 11.50 | 1300 | NASDAQ | CHEK | Wed, Jun 3, 2020 | 10.48 | 10.60 | 10.30 | 10.60 | 1299 | NASDAQ | CHEK | Tue, Jun 2, 2020 | 10.69 | 10.78 | 10.30 | 10.70 | 1298 | NASDAQ | CHEK | Mon, Jun 1, 2020 | 10.40 | 10.80 | 10.18 | 10.66 | 1297 | NASDAQ | CHEK | Fri, May 29, 2020 | 10.42 | 10.70 | 10.21 | 10.52 | 1296 | NASDAQ | CHEK | Thu, May 28, 2020 | 11.20 | 11.28 | 10.52 | 10.65 | 1295 | NASDAQ | CHEK | Wed, May 27, 2020 | 11.60 | 11.60 | 10.50 | 11.16 | 1294 | NASDAQ | CHEK | Tue, May 26, 2020 | 11.80 | 11.90 | 11.40 | 11.60 | 1293 | NASDAQ | CHEK | Fri, May 22, 2020 | 11.46 | 12.18 | 11.16 | 11.40 | 1292 | NASDAQ | CHEK | Thu, May 21, 2020 | 11.80 | 11.80 | 11.10 | 11.60 | 1291 | NASDAQ | CHEK | Wed, May 20, 2020 | 12.20 | 12.20 | 11.45 | 11.93 | 1290 | NASDAQ | CHEK | Tue, May 19, 2020 | 12.20 | 13.00 | 11.20 | 12.16 | 1289 | NASDAQ | CHEK | Mon, May 18, 2020 | 10.60 | 12.40 | 10.30 | 12.00 | 1288 | NASDAQ | CHEK | Fri, May 15, 2020 | 11.20 | 11.46 | 10.30 | 10.53 | 1287 | NASDAQ | CHEK | Thu, May 14, 2020 | 10.40 | 10.70 | 9.41 | 10.70 | 1286 | NASDAQ | CHEK | Wed, May 13, 2020 | 10.80 | 10.80 | 10.20 | 10.39 | 1285 | NASDAQ | CHEK | Tue, May 12, 2020 | 11.20 | 11.20 | 10.00 | 10.60 | 1284 | NASDAQ | CHEK | Mon, May 11, 2020 | 10.80 | 11.46 | 10.54 | 10.98 | 1283 | NASDAQ | CHEK | Fri, May 8, 2020 | 10.75 | 11.54 | 10.40 | 10.80 | 1282 | NASDAQ | CHEK | Thu, May 7, 2020 | 10.61 | 10.92 | 10.02 | 10.60 | 1281 | NASDAQ | CHEK | Wed, May 6, 2020 | 9.67 | 9.90 | 9.20 | 9.83 | 1280 | NASDAQ | CHEK | Tue, May 5, 2020 | 9.90 | 9.98 | 9.48 | 9.76 | 1279 | NASDAQ | CHEK | Mon, May 4, 2020 | 9.80 | 10.20 | 9.42 | 10.16 | 1278 | NASDAQ | CHEK | Fri, May 1, 2020 | 10.10 | 10.10 | 9.40 | 9.76 | 1277 | NASDAQ | CHEK | Thu, Apr 30, 2020 | 10.20 | 10.60 | 9.20 | 9.94 | 1276 | NASDAQ | CHEK | Wed, Apr 29, 2020 | 11.18 | 11.90 | 10.80 | 11.60 | 1275 | NASDAQ | CHEK | Tue, Apr 28, 2020 | 11.50 | 11.55 | 10.20 | 10.80 | 1274 | NASDAQ | CHEK | Mon, Apr 27, 2020 | 10.60 | 12.60 | 10.46 | 11.56 | 1273 | NASDAQ | CHEK | Fri, Apr 24, 2020 | 10.00 | 10.20 | 9.62 | 10.19 | 1272 | NASDAQ | CHEK | Thu, Apr 23, 2020 | 10.30 | 10.40 | 9.25 | 9.80 | 1271 | NASDAQ | CHEK | Wed, Apr 22, 2020 | 10.50 | 10.70 | 10.20 | 10.40 | 1270 | NASDAQ | CHEK | Tue, Apr 21, 2020 | 11.00 | 11.00 | 9.80 | 10.59 | 1269 | NASDAQ | CHEK | Mon, Apr 20, 2020 | 9.38 | 11.80 | 8.80 | 11.10 | 1268 | NASDAQ | CHEK | Fri, Apr 17, 2020 | 19.00 | 20.80 | 18.53 | 20.60 | 1267 | NASDAQ | CHEK | Thu, Apr 16, 2020 | 19.70 | 21.60 | 17.40 | 18.58 | 1266 | NASDAQ | CHEK | Wed, Apr 15, 2020 | 19.60 | 23.20 | 17.80 | 20.60 | 1265 | NASDAQ | CHEK | Tue, Apr 14, 2020 | 18.27 | 19.60 | 17.40 | 18.61 | 1264 | NASDAQ | CHEK | Mon, Apr 13, 2020 | 18.40 | 19.00 | 17.20 | 18.00 | 1263 | NASDAQ | CHEK | Thu, Apr 9, 2020 | 18.00 | 19.00 | 17.80 | 18.00 | 1262 | NASDAQ | CHEK | Wed, Apr 8, 2020 | 17.00 | 18.00 | 17.00 | 17.97 | 1261 | NASDAQ | CHEK | Tue, Apr 7, 2020 | 18.00 | 18.50 | 16.60 | 17.00 | 1260 | NASDAQ | CHEK | Mon, Apr 6, 2020 | 20.00 | 20.60 | 16.00 | 17.80 | 1259 | NASDAQ | CHEK | Fri, Apr 3, 2020 | 21.00 | 21.80 | 20.00 | 20.80 | 1258 | NASDAQ | CHEK | Thu, Apr 2, 2020 | 23.00 | 23.00 | 21.00 | 21.80 | 1257 | NASDAQ | CHEK | Wed, Apr 1, 2020 | 23.40 | 23.60 | 21.80 | 23.20 | 1256 | NASDAQ | CHEK | Tue, Mar 31, 2020 | 21.60 | 23.80 | 21.60 | 23.40 | 1255 | NASDAQ | CHEK | Mon, Mar 30, 2020 | 23.00 | 24.00 | 21.35 | 21.60 | 1254 | NASDAQ | CHEK | Fri, Mar 27, 2020 | 21.40 | 23.00 | 20.00 | 23.00 | 1253 | NASDAQ | CHEK | Thu, Mar 26, 2020 | 21.20 | 23.60 | 20.80 | 21.00 | 1252 | NASDAQ | CHEK | Wed, Mar 25, 2020 | 22.20 | 22.20 | 19.80 | 20.80 | 1251 | NASDAQ | CHEK | Tue, Mar 24, 2020 | 21.00 | 21.80 | 19.60 | 20.80 | 1250 | NASDAQ | CHEK | Mon, Mar 23, 2020 | 22.40 | 23.40 | 18.80 | 20.60 | 1249 | NASDAQ | CHEK | Fri, Mar 20, 2020 | 20.20 | 24.00 | 20.20 | 22.80 | 1248 | NASDAQ | CHEK | Thu, Mar 19, 2020 | 17.20 | 19.00 | 17.00 | 18.20 | 1247 | NASDAQ | CHEK | Wed, Mar 18, 2020 | 22.40 | 22.40 | 12.80 | 17.20 | 1246 | NASDAQ | CHEK | Tue, Mar 17, 2020 | 24.20 | 25.60 | 21.00 | 23.40 | 1245 | NASDAQ | CHEK | Mon, Mar 16, 2020 | 26.60 | 26.60 | 22.00 | 23.93 | 1244 | NASDAQ | CHEK | Fri, Mar 13, 2020 | 26.00 | 27.40 | 25.60 | 25.60 | 1243 | NASDAQ | CHEK | Thu, Mar 12, 2020 | 26.00 | 26.36 | 24.00 | 26.00 | 1242 | NASDAQ | CHEK | Wed, Mar 11, 2020 | 27.00 | 28.93 | 26.00 | 26.40 | 1241 | NASDAQ | CHEK | Tue, Mar 10, 2020 | 28.00 | 30.00 | 26.80 | 27.60 | 1240 | NASDAQ | CHEK | Mon, Mar 9, 2020 | 28.00 | 31.00 | 26.00 | 27.60 | 1239 | NASDAQ | CHEK | Fri, Mar 6, 2020 | 30.00 | 30.15 | 28.20 | 28.20 | 1238 | NASDAQ | CHEK | Thu, Mar 5, 2020 | 31.00 | 31.80 | 30.00 | 30.40 | 1237 | NASDAQ | CHEK | Wed, Mar 4, 2020 | 31.00 | 32.79 | 30.21 | 31.40 | 1236 | NASDAQ | CHEK | Tue, Mar 3, 2020 | 30.00 | 34.00 | 30.00 | 30.55 | 1235 | NASDAQ | CHEK | Mon, Mar 2, 2020 | 31.00 | 31.40 | 30.00 | 30.20 | 1234 | NASDAQ | CHEK | Fri, Feb 28, 2020 | 29.80 | 31.83 | 29.20 | 29.60 | 1233 | NASDAQ | CHEK | Thu, Feb 27, 2020 | 30.20 | 32.80 | 29.20 | 31.00 | 1232 | NASDAQ | CHEK | Wed, Feb 26, 2020 | 33.00 | 33.00 | 30.80 | 31.20 | 1231 | NASDAQ | CHEK | Tue, Feb 25, 2020 | 34.00 | 34.03 | 31.20 | 32.00 | 1230 | NASDAQ | CHEK | Mon, Feb 24, 2020 | 34.60 | 34.60 | 30.00 | 33.60 | 1229 | NASDAQ | CHEK | Fri, Feb 21, 2020 | 38.40 | 38.40 | 33.20 | 34.40 | 1228 | NASDAQ | CHEK | Thu, Feb 20, 2020 | 34.80 | 37.00 | 33.80 | 35.00 | 1227 | NASDAQ | CHEK | Wed, Feb 19, 2020 | 33.40 | 34.50 | 33.25 | 34.30 | 1226 | NASDAQ | CHEK | Tue, Feb 18, 2020 | 33.40 | 34.40 | 33.00 | 33.20 | 1225 | NASDAQ | CHEK | Fri, Feb 14, 2020 | 35.00 | 35.20 | 33.20 | 35.00 | 1224 | NASDAQ | CHEK | Thu, Feb 13, 2020 | 34.80 | 35.99 | 30.20 | 32.80 | 1223 | NASDAQ | CHEK | Wed, Feb 12, 2020 | 35.40 | 37.20 | 34.20 | 35.60 | 1222 | NASDAQ | CHEK | Tue, Feb 11, 2020 | 36.20 | 38.60 | 35.20 | 35.60 | 1221 | NASDAQ | CHEK | Mon, Feb 10, 2020 | 36.00 | 37.51 | 36.00 | 36.80 | 1220 | NASDAQ | CHEK | Fri, Feb 7, 2020 | 38.00 | 39.60 | 36.40 | 36.80 | 1219 | NASDAQ | CHEK | Thu, Feb 6, 2020 | 36.60 | 39.60 | 35.40 | 38.00 | 1218 | NASDAQ | CHEK | Wed, Feb 5, 2020 | 37.00 | 38.00 | 37.00 | 37.21 | 1217 | NASDAQ | CHEK | Tue, Feb 4, 2020 | 36.00 | 38.57 | 36.00 | 37.00 | 1216 | NASDAQ | CHEK | Mon, Feb 3, 2020 | 37.40 | 38.40 | 36.20 | 36.60 | 1215 | NASDAQ | CHEK | Fri, Jan 31, 2020 | 40.00 | 42.60 | 34.60 | 37.40 | 1214 | NASDAQ | CHEK | Thu, Jan 30, 2020 | 42.80 | 43.20 | 42.00 | 42.79 | 1213 | NASDAQ | CHEK | Wed, Jan 29, 2020 | 42.20 | 44.80 | 42.20 | 43.20 | 1212 | NASDAQ | CHEK | Tue, Jan 28, 2020 | 41.60 | 45.80 | 41.60 | 43.00 | 1211 | NASDAQ | CHEK | Mon, Jan 27, 2020 | 42.60 | 42.80 | 41.00 | 42.00 | 1210 | NASDAQ | CHEK | Fri, Jan 24, 2020 | 41.60 | 43.60 | 40.80 | 43.40 | 1209 | NASDAQ | CHEK | Thu, Jan 23, 2020 | 42.20 | 42.80 | 40.41 | 42.10 | 1208 | NASDAQ | CHEK | Wed, Jan 22, 2020 | 41.00 | 43.00 | 40.80 | 42.20 | 1207 | NASDAQ | CHEK | Tue, Jan 21, 2020 | 41.40 | 43.20 | 40.60 | 41.10 | 1206 | NASDAQ | CHEK | Fri, Jan 17, 2020 | 39.80 | 41.80 | 39.60 | 40.60 | 1205 | NASDAQ | CHEK | Thu, Jan 16, 2020 | 40.00 | 40.00 | 39.60 | 39.80 | 1204 | NASDAQ | CHEK | Wed, Jan 15, 2020 | 39.60 | 40.00 | 39.40 | 39.97 | 1203 | NASDAQ | CHEK | Tue, Jan 14, 2020 | 40.00 | 40.00 | 38.40 | 39.40 | 1202 | NASDAQ | CHEK | Mon, Jan 13, 2020 | 43.00 | 45.80 | 39.60 | 40.00 | 1201 | NASDAQ | CHEK | Fri, Jan 10, 2020 | 42.00 | 42.00 | 40.02 | 40.20 | 1200 | NASDAQ | CHEK | Thu, Jan 9, 2020 | 37.00 | 47.40 | 37.00 | 44.80 | 1199 | NASDAQ | CHEK | Wed, Jan 8, 2020 | 34.40 | 36.60 | 34.40 | 36.40 | 1198 | NASDAQ | CHEK | Tue, Jan 7, 2020 | 34.20 | 36.20 | 34.00 | 35.00 | 1197 | NASDAQ | CHEK | Mon, Jan 6, 2020 | 35.00 | 35.00 | 34.00 | 34.00 | 1196 | NASDAQ | CHEK | Fri, Jan 3, 2020 | 34.40 | 35.20 | 34.29 | 34.60 | 1195 | NASDAQ | CHEK | Thu, Jan 2, 2020 | 34.80 | 36.05 | 34.00 | 34.60 | 1194 | NASDAQ | CHEK | Tue, Dec 31, 2019 | 34.20 | 35.60 | 34.00 | 34.40 | 1193 | NASDAQ | CHEK | Mon, Dec 30, 2019 | 35.00 | 35.40 | 32.20 | 33.60 | 1192 | NASDAQ | CHEK | Fri, Dec 27, 2019 | 34.80 | 36.00 | 34.40 | 35.00 | 1191 | NASDAQ | CHEK | Thu, Dec 26, 2019 | 34.60 | 35.10 | 34.40 | 34.90 | 1190 | NASDAQ | CHEK | Tue, Dec 24, 2019 | 35.00 | 35.00 | 34.40 | 35.00 | 1189 | NASDAQ | CHEK | Mon, Dec 23, 2019 | 33.60 | 34.80 | 32.00 | 34.60 | 1188 | NASDAQ | CHEK | Fri, Dec 20, 2019 | 35.00 | 35.00 | 33.00 | 33.37 | 1187 | NASDAQ | CHEK | Thu, Dec 19, 2019 | 31.20 | 35.60 | 30.20 | 33.91 | 1186 | NASDAQ | CHEK | Wed, Dec 18, 2019 | 30.60 | 32.00 | 29.40 | 31.19 | 1185 | NASDAQ | CHEK | Tue, Dec 17, 2019 | 28.60 | 30.00 | 28.40 | 28.40 | 1184 | NASDAQ | CHEK | Mon, Dec 16, 2019 | 30.00 | 31.01 | 27.80 | 29.20 | 1183 | NASDAQ | CHEK | Fri, Dec 13, 2019 | 31.80 | 31.80 | 30.20 | 30.20 | 1182 | NASDAQ | CHEK | Thu, Dec 12, 2019 | 30.20 | 31.60 | 29.80 | 30.40 | 1181 | NASDAQ | CHEK | Wed, Dec 11, 2019 | 29.60 | 33.00 | 27.60 | 30.80 | 1180 | NASDAQ | CHEK | Tue, Dec 10, 2019 | 28.60 | 30.00 | 27.80 | 30.00 | 1179 | NASDAQ | CHEK | Mon, Dec 9, 2019 | 27.40 | 28.80 | 27.40 | 28.80 | 1178 | NASDAQ | CHEK | Fri, Dec 6, 2019 | 27.20 | 28.62 | 27.20 | 27.80 | 1177 | NASDAQ | CHEK | Thu, Dec 5, 2019 | 27.20 | 28.60 | 27.00 | 27.00 | 1176 | NASDAQ | CHEK | Wed, Dec 4, 2019 | 28.80 | 28.80 | 27.00 | 27.30 | 1175 | NASDAQ | CHEK | Tue, Dec 3, 2019 | 27.60 | 28.00 | 27.00 | 27.80 | 1174 | NASDAQ | CHEK | Mon, Dec 2, 2019 | 27.60 | 28.60 | 27.60 | 27.60 | 1173 | NASDAQ | CHEK | Fri, Nov 29, 2019 | 28.23 | 28.23 | 25.60 | 26.80 | 1172 | NASDAQ | CHEK | Wed, Nov 27, 2019 | 28.00 | 28.00 | 25.60 | 26.20 | 1171 | NASDAQ | CHEK | Tue, Nov 26, 2019 | 28.40 | 29.10 | 25.85 | 27.20 | 1170 | NASDAQ | CHEK | Mon, Nov 25, 2019 | 30.00 | 30.00 | 28.80 | 29.13 | 1169 | NASDAQ | CHEK | Fri, Nov 22, 2019 | 29.20 | 30.20 | 29.00 | 29.91 | 1168 | NASDAQ | CHEK | Thu, Nov 21, 2019 | 30.00 | 31.00 | 29.40 | 29.52 | 1167 | NASDAQ | CHEK | Wed, Nov 20, 2019 | 30.40 | 31.21 | 30.20 | 30.20 | 1166 | NASDAQ | CHEK | Tue, Nov 19, 2019 | 29.40 | 31.00 | 29.40 | 30.20 | 1165 | NASDAQ | CHEK | Mon, Nov 18, 2019 | 29.00 | 31.40 | 29.00 | 30.00 | 1164 | NASDAQ | CHEK | Fri, Nov 15, 2019 | 30.40 | 32.20 | 27.00 | 30.19 | 1163 | NASDAQ | CHEK | Thu, Nov 14, 2019 | 32.00 | 32.20 | 30.40 | 30.60 | 1162 | NASDAQ | CHEK | Wed, Nov 13, 2019 | 32.00 | 32.40 | 31.20 | 31.20 | 1161 | NASDAQ | CHEK | Tue, Nov 12, 2019 | 33.60 | 33.73 | 32.20 | 32.72 | 1160 | NASDAQ | CHEK | Mon, Nov 11, 2019 | 36.60 | 36.60 | 32.20 | 33.20 | 1159 | NASDAQ | CHEK | Fri, Nov 8, 2019 | 37.20 | 37.20 | 34.00 | 35.00 | 1158 | NASDAQ | CHEK | Thu, Nov 7, 2019 | 35.20 | 37.40 | 33.00 | 37.40 | 1157 | NASDAQ | CHEK | Wed, Nov 6, 2019 | 34.80 | 37.80 | 33.20 | 35.00 | 1156 | NASDAQ | CHEK | Tue, Nov 5, 2019 | 36.40 | 36.40 | 35.00 | 35.00 | 1155 | NASDAQ | CHEK | Mon, Nov 4, 2019 | 36.00 | 36.90 | 35.15 | 35.40 | 1154 | NASDAQ | CHEK | Fri, Nov 1, 2019 | 34.40 | 37.40 | 34.00 | 35.94 | 1153 | NASDAQ | CHEK | Thu, Oct 31, 2019 | 34.00 | 36.60 | 34.00 | 34.28 | 1152 | NASDAQ | CHEK | Wed, Oct 30, 2019 | 36.20 | 37.20 | 34.00 | 34.00 | 1151 | NASDAQ | CHEK | Tue, Oct 29, 2019 | 37.40 | 38.40 | 36.42 | 36.55 | 1150 | NASDAQ | CHEK | Mon, Oct 28, 2019 | 38.40 | 39.60 | 37.00 | 37.40 | 1149 | NASDAQ | CHEK | Fri, Oct 25, 2019 | 35.60 | 41.55 | 33.20 | 39.00 | 1148 | NASDAQ | CHEK | Thu, Oct 24, 2019 | 35.60 | 35.60 | 33.11 | 34.80 | 1147 | NASDAQ | CHEK | Wed, Oct 23, 2019 | 32.60 | 34.40 | 32.60 | 34.00 | 1146 | NASDAQ | CHEK | Tue, Oct 22, 2019 | 34.60 | 34.80 | 31.00 | 34.00 | 1145 | NASDAQ | CHEK | Mon, Oct 21, 2019 | 34.60 | 36.80 | 34.31 | 34.80 | 1144 | NASDAQ | CHEK | Fri, Oct 18, 2019 | 34.40 | 37.40 | 33.40 | 34.80 | 1143 | NASDAQ | CHEK | Thu, Oct 17, 2019 | 37.20 | 38.61 | 32.00 | 32.00 | 1142 | NASDAQ | CHEK | Wed, Oct 16, 2019 | 38.00 | 41.00 | 38.00 | 39.57 | 1141 | NASDAQ | CHEK | Tue, Oct 15, 2019 | 37.20 | 38.80 | 37.20 | 38.60 | 1140 | NASDAQ | CHEK | Mon, Oct 14, 2019 | 37.80 | 37.80 | 37.20 | 37.20 | 1139 | NASDAQ | CHEK | Fri, Oct 11, 2019 | 38.20 | 39.00 | 37.60 | 37.60 | 1138 | NASDAQ | CHEK | Thu, Oct 10, 2019 | 38.00 | 38.58 | 37.60 | 37.80 | 1137 | NASDAQ | CHEK | Wed, Oct 9, 2019 | 38.00 | 38.00 | 37.60 | 37.60 | 1136 | NASDAQ | CHEK | Tue, Oct 8, 2019 | 37.60 | 39.40 | 37.60 | 38.60 | 1135 | NASDAQ | CHEK | Mon, Oct 7, 2019 | 38.00 | 38.00 | 37.40 | 37.80 | 1134 | NASDAQ | CHEK | Fri, Oct 4, 2019 | 37.20 | 38.00 | 37.20 | 37.60 | 1133 | NASDAQ | CHEK | Thu, Oct 3, 2019 | 37.20 | 38.00 | 37.20 | 37.50 | 1132 | NASDAQ | CHEK | Wed, Oct 2, 2019 | 38.00 | 38.00 | 37.20 | 37.20 | 1131 | NASDAQ | CHEK | Tue, Oct 1, 2019 | 38.00 | 39.00 | 37.60 | 37.80 | 1130 | NASDAQ | CHEK | Mon, Sep 30, 2019 | 38.40 | 38.89 | 37.60 | 37.60 | 1129 | NASDAQ | CHEK | Fri, Sep 27, 2019 | 38.80 | 39.20 | 38.20 | 39.00 | 1128 | NASDAQ | CHEK | Thu, Sep 26, 2019 | 39.00 | 40.18 | 38.40 | 38.80 | 1127 | NASDAQ | CHEK | Wed, Sep 25, 2019 | 39.33 | 40.00 | 38.60 | 39.40 | 1126 | NASDAQ | CHEK | Tue, Sep 24, 2019 | 40.20 | 40.20 | 38.40 | 38.80 | 1125 | NASDAQ | CHEK | Mon, Sep 23, 2019 | 39.80 | 40.20 | 39.00 | 39.40 | 1124 | NASDAQ | CHEK | Fri, Sep 20, 2019 | 40.20 | 41.40 | 38.80 | 40.40 | 1123 | NASDAQ | CHEK | Thu, Sep 19, 2019 | 39.60 | 41.40 | 39.30 | 39.60 | 1122 | NASDAQ | CHEK | Wed, Sep 18, 2019 | 40.60 | 40.60 | 39.40 | 40.20 | 1121 | NASDAQ | CHEK | Tue, Sep 17, 2019 | 41.60 | 41.60 | 40.60 | 40.60 | 1120 | NASDAQ | CHEK | Mon, Sep 16, 2019 | 42.00 | 42.00 | 41.20 | 41.20 | 1119 | NASDAQ | CHEK | Fri, Sep 13, 2019 | 40.60 | 42.40 | 40.60 | 42.00 | 1118 | NASDAQ | CHEK | Thu, Sep 12, 2019 | 42.00 | 42.80 | 40.40 | 41.20 | 1117 | NASDAQ | CHEK | Wed, Sep 11, 2019 | 40.20 | 42.40 | 38.60 | 42.12 | 1116 | NASDAQ | CHEK | Tue, Sep 10, 2019 | 37.20 | 39.80 | 37.20 | 39.80 | 1115 | NASDAQ | CHEK | Mon, Sep 9, 2019 | 37.20 | 37.92 | 37.20 | 37.60 | 1114 | NASDAQ | CHEK | Fri, Sep 6, 2019 | 38.00 | 38.40 | 37.20 | 37.40 | 1113 | NASDAQ | CHEK | Thu, Sep 5, 2019 | 39.00 | 39.00 | 38.00 | 38.00 | 1112 | NASDAQ | CHEK | Wed, Sep 4, 2019 | 39.40 | 40.40 | 38.40 | 38.70 | 1111 | NASDAQ | CHEK | Tue, Sep 3, 2019 | 40.00 | 40.60 | 37.80 | 39.80 | 1110 | NASDAQ | CHEK | Fri, Aug 30, 2019 | 40.60 | 41.12 | 40.00 | 40.40 | 1109 | NASDAQ | CHEK | Thu, Aug 29, 2019 | 40.40 | 41.00 | 40.00 | 40.00 | 1108 | NASDAQ | CHEK | Wed, Aug 28, 2019 | 40.60 | 40.60 | 39.20 | 40.60 | 1107 | NASDAQ | CHEK | Tue, Aug 27, 2019 | 40.20 | 40.60 | 40.00 | 40.00 | 1106 | NASDAQ | CHEK | Mon, Aug 26, 2019 | 40.40 | 41.00 | 40.00 | 40.00 | 1105 | NASDAQ | CHEK | Fri, Aug 23, 2019 | 40.60 | 42.20 | 39.74 | 39.80 | 1104 | NASDAQ | CHEK | Thu, Aug 22, 2019 | 41.80 | 41.80 | 39.80 | 41.40 | 1103 | NASDAQ | CHEK | Wed, Aug 21, 2019 | 41.80 | 42.00 | 40.60 | 40.60 | 1102 | NASDAQ | CHEK | Tue, Aug 20, 2019 | 40.80 | 42.00 | 39.60 | 40.60 | 1101 | NASDAQ | CHEK | Mon, Aug 19, 2019 | 43.00 | 43.00 | 39.20 | 39.20 | 1100 | NASDAQ | CHEK | Fri, Aug 16, 2019 | 38.40 | 38.80 | 38.00 | 38.80 | 1099 | NASDAQ | CHEK | Thu, Aug 15, 2019 | 38.40 | 38.80 | 38.00 | 38.20 | 1098 | NASDAQ | CHEK | Wed, Aug 14, 2019 | 39.00 | 39.60 | 38.00 | 38.40 | 1097 | NASDAQ | CHEK | Tue, Aug 13, 2019 | 40.00 | 41.00 | 39.00 | 39.20 | 1096 | NASDAQ | CHEK | Mon, Aug 12, 2019 | 40.20 | 40.40 | 39.01 | 40.40 | 1095 | NASDAQ | CHEK | Fri, Aug 9, 2019 | 40.60 | 40.80 | 39.68 | 39.80 | 1094 | NASDAQ | CHEK | Thu, Aug 8, 2019 | 40.20 | 41.00 | 39.60 | 40.00 | 1093 | NASDAQ | CHEK | Wed, Aug 7, 2019 | 40.20 | 40.97 | 38.60 | 39.60 | 1092 | NASDAQ | CHEK | Tue, Aug 6, 2019 | 38.80 | 41.90 | 38.00 | 41.65 | 1091 | NASDAQ | CHEK | Mon, Aug 5, 2019 | 40.20 | 40.82 | 38.20 | 38.20 | 1090 | NASDAQ | CHEK | Fri, Aug 2, 2019 | 41.40 | 42.79 | 40.60 | 41.00 | 1089 | NASDAQ | CHEK | Thu, Aug 1, 2019 | 42.40 | 43.60 | 40.80 | 42.40 | 1088 | NASDAQ | CHEK | Wed, Jul 31, 2019 | 43.60 | 43.60 | 41.80 | 42.00 | 1087 | NASDAQ | CHEK | Tue, Jul 30, 2019 | 40.00 | 44.80 | 39.80 | 43.14 | 1086 | NASDAQ | CHEK | Mon, Jul 29, 2019 | 41.60 | 43.60 | 39.40 | 39.60 | 1085 | NASDAQ | CHEK | Fri, Jul 26, 2019 | 41.00 | 44.00 | 38.32 | 41.80 | 1084 | NASDAQ | CHEK | Thu, Jul 25, 2019 | 41.80 | 42.60 | 40.20 | 40.80 | 1083 | NASDAQ | CHEK | Wed, Jul 24, 2019 | 43.60 | 43.80 | 40.40 | 41.40 | 1082 | NASDAQ | CHEK | Tue, Jul 23, 2019 | 45.00 | 45.20 | 41.80 | 43.40 | 1081 | NASDAQ | CHEK | Mon, Jul 22, 2019 | 44.00 | 44.32 | 43.20 | 44.20 | 1080 | NASDAQ | CHEK | Fri, Jul 19, 2019 | 44.60 | 45.20 | 43.60 | 43.60 | 1079 | NASDAQ | CHEK | Thu, Jul 18, 2019 | 45.00 | 45.80 | 43.46 | 44.40 | 1078 | NASDAQ | CHEK | Wed, Jul 17, 2019 | 45.40 | 45.60 | 44.00 | 45.20 | 1077 | NASDAQ | CHEK | Tue, Jul 16, 2019 | 43.00 | 45.72 | 41.41 | 44.80 | 1076 | NASDAQ | CHEK | Mon, Jul 15, 2019 | 44.80 | 44.80 | 42.00 | 42.00 | 1075 | NASDAQ | CHEK | Fri, Jul 12, 2019 | 43.00 | 45.60 | 43.00 | 44.40 | 1074 | NASDAQ | CHEK | Thu, Jul 11, 2019 | 41.80 | 43.20 | 40.40 | 43.20 | 1073 | NASDAQ | CHEK | Wed, Jul 10, 2019 | 42.00 | 44.00 | 40.40 | 42.00 | 1072 | NASDAQ | CHEK | Tue, Jul 9, 2019 | 49.20 | 51.40 | 40.80 | 42.80 | 1071 | NASDAQ | CHEK | Mon, Jul 8, 2019 | 45.00 | 45.00 | 42.20 | 43.60 | 1070 | NASDAQ | CHEK | Fri, Jul 5, 2019 | 41.20 | 44.40 | 41.00 | 44.20 | 1069 | NASDAQ | CHEK | Wed, Jul 3, 2019 | 41.60 | 41.60 | 40.20 | 41.40 | 1068 | NASDAQ | CHEK | Tue, Jul 2, 2019 | 42.03 | 43.00 | 41.00 | 41.80 | 1067 | NASDAQ | CHEK | Mon, Jul 1, 2019 | 42.60 | 42.80 | 40.20 | 42.80 | 1066 | NASDAQ | CHEK | Fri, Jun 28, 2019 | 43.26 | 43.88 | 42.40 | 42.40 | 1065 | NASDAQ | CHEK | Thu, Jun 27, 2019 | 43.60 | 44.87 | 42.80 | 42.80 | 1064 | NASDAQ | CHEK | Wed, Jun 26, 2019 | 43.80 | 44.80 | 43.20 | 43.71 | 1063 | NASDAQ | CHEK | Tue, Jun 25, 2019 | 45.40 | 45.40 | 43.06 | 43.80 | 1062 | NASDAQ | CHEK | Mon, Jun 24, 2019 | 45.00 | 46.40 | 43.80 | 45.60 | 1061 | NASDAQ | CHEK | Fri, Jun 21, 2019 | 45.60 | 46.70 | 44.62 | 44.80 | 1060 | NASDAQ | CHEK | Thu, Jun 20, 2019 | 46.60 | 48.37 | 44.50 | 45.00 | 1059 | NASDAQ | CHEK | Wed, Jun 19, 2019 | 46.40 | 47.40 | 45.40 | 47.20 | 1058 | NASDAQ | CHEK | Tue, Jun 18, 2019 | 48.20 | 48.20 | 45.60 | 45.80 | 1057 | NASDAQ | CHEK | Mon, Jun 17, 2019 | 46.60 | 48.60 | 46.00 | 46.40 | 1056 | NASDAQ | CHEK | Fri, Jun 14, 2019 | 48.80 | 48.80 | 46.80 | 46.86 | 1055 | NASDAQ | CHEK | Thu, Jun 13, 2019 | 48.00 | 48.00 | 46.80 | 47.60 | 1054 | NASDAQ | CHEK | Wed, Jun 12, 2019 | 48.80 | 48.80 | 46.80 | 46.80 | 1053 | NASDAQ | CHEK | Tue, Jun 11, 2019 | 47.80 | 49.00 | 45.20 | 48.20 | 1052 | NASDAQ | CHEK | Mon, Jun 10, 2019 | 45.00 | 48.40 | 44.00 | 46.80 | 1051 | NASDAQ | CHEK | Fri, Jun 7, 2019 | 45.80 | 46.40 | 44.80 | 45.40 | 1050 | NASDAQ | CHEK | Thu, Jun 6, 2019 | 46.27 | 46.60 | 44.60 | 46.00 | 1049 | NASDAQ | CHEK | Wed, Jun 5, 2019 | 46.40 | 47.60 | 45.40 | 46.80 | 1048 | NASDAQ | CHEK | Tue, Jun 4, 2019 | 48.00 | 48.00 | 45.60 | 46.80 | 1047 | NASDAQ | CHEK | Mon, Jun 3, 2019 | 46.80 | 48.00 | 46.00 | 47.80 | 1046 | NASDAQ | CHEK | Fri, May 31, 2019 | 44.00 | 46.80 | 44.00 | 46.20 | 1045 | NASDAQ | CHEK | Thu, May 30, 2019 | 44.60 | 47.00 | 44.20 | 44.20 | 1044 | NASDAQ | CHEK | Wed, May 29, 2019 | 45.80 | 47.37 | 44.40 | 44.40 | 1043 | NASDAQ | CHEK | Tue, May 28, 2019 | 46.20 | 49.80 | 45.76 | 46.80 | 1042 | NASDAQ | CHEK | Fri, May 24, 2019 | 46.40 | 48.40 | 45.00 | 46.20 | 1041 | NASDAQ | CHEK | Thu, May 23, 2019 | 48.00 | 49.60 | 45.20 | 45.60 | 1040 | NASDAQ | CHEK | Wed, May 22, 2019 | 51.20 | 52.20 | 48.20 | 49.80 | 1039 | NASDAQ | CHEK | Tue, May 21, 2019 | 51.80 | 52.40 | 48.40 | 51.00 | 1038 | NASDAQ | CHEK | Mon, May 20, 2019 | 51.20 | 55.60 | 48.00 | 51.00 | 1037 | NASDAQ | CHEK | Fri, May 17, 2019 | 49.60 | 56.00 | 49.60 | 53.40 | 1036 | NASDAQ | CHEK | Thu, May 16, 2019 | 50.00 | 52.00 | 47.80 | 49.40 | 1035 | NASDAQ | CHEK | Wed, May 15, 2019 | 44.00 | 47.40 | 44.00 | 46.80 | 1034 | NASDAQ | CHEK | Tue, May 14, 2019 | 43.20 | 48.60 | 43.20 | 43.80 | 1033 | NASDAQ | CHEK | Mon, May 13, 2019 | 46.40 | 46.40 | 43.20 | 44.00 | 1032 | NASDAQ | CHEK | Fri, May 10, 2019 | 48.68 | 49.20 | 45.60 | 46.20 | 1031 | NASDAQ | CHEK | Thu, May 9, 2019 | 49.20 | 49.60 | 47.40 | 47.60 | 1030 | NASDAQ | CHEK | Wed, May 8, 2019 | 49.60 | 49.60 | 48.00 | 49.00 | 1029 | NASDAQ | CHEK | Tue, May 7, 2019 | 50.40 | 50.40 | 48.00 | 48.40 | 1028 | NASDAQ | CHEK | Mon, May 6, 2019 | 51.00 | 52.20 | 50.40 | 50.40 | 1027 | NASDAQ | CHEK | Fri, May 3, 2019 | 53.00 | 53.00 | 50.80 | 51.20 | 1026 | NASDAQ | CHEK | Thu, May 2, 2019 | 51.20 | 53.80 | 51.20 | 52.00 | 1025 | NASDAQ | CHEK | Wed, May 1, 2019 | 52.40 | 52.40 | 51.40 | 51.60 | 1024 | NASDAQ | CHEK | Tue, Apr 30, 2019 | 52.00 | 52.98 | 51.20 | 52.20 | 1023 | NASDAQ | CHEK | Mon, Apr 29, 2019 | 52.00 | 52.00 | 50.40 | 51.00 | 1022 | NASDAQ | CHEK | Fri, Apr 26, 2019 | 50.35 | 52.40 | 50.20 | 51.70 | 1021 | NASDAQ | CHEK | Thu, Apr 25, 2019 | 52.00 | 54.00 | 52.00 | 52.40 | 1020 | NASDAQ | CHEK | Wed, Apr 24, 2019 | 52.00 | 52.43 | 50.20 | 51.80 | 1019 | NASDAQ | CHEK | Tue, Apr 23, 2019 | 51.60 | 53.00 | 51.60 | 51.80 | 1018 | NASDAQ | CHEK | Mon, Apr 22, 2019 | 51.20 | 52.00 | 51.14 | 52.00 | 1017 | NASDAQ | CHEK | Thu, Apr 18, 2019 | 49.00 | 51.80 | 48.70 | 51.00 | 1016 | NASDAQ | CHEK | Wed, Apr 17, 2019 | 47.80 | 50.00 | 46.00 | 49.20 | 1015 | NASDAQ | CHEK | Tue, Apr 16, 2019 | 51.60 | 52.00 | 48.00 | 48.60 | 1014 | NASDAQ | CHEK | Mon, Apr 15, 2019 | 53.40 | 54.00 | 49.20 | 50.40 | 1013 | NASDAQ | CHEK | Fri, Apr 12, 2019 | 54.00 | 54.20 | 53.40 | 53.80 | 1012 | NASDAQ | CHEK | Thu, Apr 11, 2019 | 53.78 | 54.20 | 52.50 | 54.00 | 1011 | NASDAQ | CHEK | Wed, Apr 10, 2019 | 52.00 | 54.14 | 52.00 | 53.60 | 1010 | NASDAQ | CHEK | Tue, Apr 9, 2019 | 53.60 | 54.20 | 52.80 | 54.00 | 1009 | NASDAQ | CHEK | Mon, Apr 8, 2019 | 58.80 | 58.80 | 53.20 | 54.00 | 1008 | NASDAQ | CHEK | Fri, Apr 5, 2019 | 54.40 | 54.78 | 53.00 | 53.60 | 1007 | NASDAQ | CHEK | Thu, Apr 4, 2019 | 55.20 | 56.00 | 54.00 | 55.00 | 1006 | NASDAQ | CHEK | Wed, Apr 3, 2019 | 55.20 | 55.80 | 52.51 | 55.40 | 1005 | NASDAQ | CHEK | Tue, Apr 2, 2019 | 53.40 | 55.00 | 52.00 | 55.00 | 1004 | NASDAQ | CHEK | Mon, Apr 1, 2019 | 54.80 | 55.00 | 52.20 | 53.80 | 1003 | NASDAQ | CHEK | Fri, Mar 29, 2019 | 56.20 | 57.40 | 53.40 | 54.00 | 1002 | NASDAQ | CHEK | Thu, Mar 28, 2019 | 55.20 | 56.60 | 52.40 | 56.00 | 1001 | NASDAQ | CHEK | Wed, Mar 27, 2019 | 60.00 | 60.00 | 54.00 | 55.20 | 1000 | NASDAQ | CHEK | Tue, Mar 26, 2019 | 67.00 | 67.40 | 58.60 | 59.00 | 999 | NASDAQ | CHEK | Mon, Mar 25, 2019 | 58.00 | 67.60 | 58.00 | 65.00 | 998 | NASDAQ | CHEK | Fri, Mar 22, 2019 | 59.80 | 60.00 | 54.40 | 57.20 | 997 | NASDAQ | CHEK | Thu, Mar 21, 2019 | 56.00 | 59.80 | 56.00 | 59.60 | 996 | NASDAQ | CHEK | Wed, Mar 20, 2019 | 53.80 | 59.00 | 53.00 | 56.60 | 995 | NASDAQ | CHEK | Tue, Mar 19, 2019 | 51.40 | 56.00 | 51.00 | 53.80 | 994 | NASDAQ | CHEK | Mon, Mar 18, 2019 | 51.80 | 53.16 | 50.00 | 52.20 | 993 | NASDAQ | CHEK | Fri, Mar 15, 2019 | 50.00 | 54.60 | 49.50 | 50.40 | 992 | NASDAQ | CHEK | Thu, Mar 14, 2019 | 50.20 | 70.00 | 47.60 | 49.60 | 991 | NASDAQ | CHEK | Wed, Mar 13, 2019 | 49.20 | 52.60 | 46.60 | 49.80 | 990 | NASDAQ | CHEK | Tue, Mar 12, 2019 | 46.60 | 48.40 | 45.00 | 48.40 | 989 | NASDAQ | CHEK | Mon, Mar 11, 2019 | 43.40 | 48.00 | 42.80 | 45.80 | 988 | NASDAQ | CHEK | Fri, Mar 8, 2019 | 41.80 | 45.80 | 41.20 | 42.80 | 987 | NASDAQ | CHEK | Thu, Mar 7, 2019 | 38.80 | 41.00 | 38.40 | 41.00 | 986 | NASDAQ | CHEK | Wed, Mar 6, 2019 | 39.80 | 41.80 | 38.60 | 39.00 | 985 | NASDAQ | CHEK | Tue, Mar 5, 2019 | 41.40 | 43.19 | 39.20 | 39.80 | 984 | NASDAQ | CHEK | Mon, Mar 4, 2019 | 40.00 | 42.40 | 39.60 | 41.40 | 983 | NASDAQ | CHEK | Fri, Mar 1, 2019 | 39.00 | 39.80 | 37.40 | 39.60 | 982 | NASDAQ | CHEK | Thu, Feb 28, 2019 | 37.60 | 38.60 | 35.00 | 38.40 | 981 | NASDAQ | CHEK | Wed, Feb 27, 2019 | 39.60 | 39.60 | 37.00 | 38.00 | 980 | NASDAQ | CHEK | Tue, Feb 26, 2019 | 38.80 | 40.20 | 38.60 | 39.00 | 979 | NASDAQ | CHEK | Mon, Feb 25, 2019 | 38.20 | 39.40 | 38.20 | 39.20 | 978 | NASDAQ | CHEK | Fri, Feb 22, 2019 | 39.60 | 40.20 | 38.20 | 38.40 | 977 | NASDAQ | CHEK | Thu, Feb 21, 2019 | 39.00 | 40.00 | 38.40 | 39.00 | 976 | NASDAQ | CHEK | Wed, Feb 20, 2019 | 40.60 | 41.40 | 37.40 | 38.60 | 975 | NASDAQ | CHEK | Tue, Feb 19, 2019 | 41.00 | 42.00 | 39.20 | 40.00 | 974 | NASDAQ | CHEK | Fri, Feb 15, 2019 | 41.80 | 43.11 | 40.60 | 41.00 | 973 | NASDAQ | CHEK | Thu, Feb 14, 2019 | 40.40 | 42.00 | 39.80 | 41.40 | 972 | NASDAQ | CHEK | Wed, Feb 13, 2019 | 42.80 | 43.00 | 39.20 | 39.80 | 971 | NASDAQ | CHEK | Tue, Feb 12, 2019 | 43.00 | 44.20 | 41.60 | 41.80 | 970 | NASDAQ | CHEK | Mon, Feb 11, 2019 | 42.80 | 45.00 | 41.00 | 42.00 | 969 | NASDAQ | CHEK | Fri, Feb 8, 2019 | 43.60 | 48.40 | 42.00 | 43.00 | 968 | NASDAQ | CHEK | Thu, Feb 7, 2019 | 42.40 | 43.60 | 41.00 | 43.00 | 967 | NASDAQ | CHEK | Wed, Feb 6, 2019 | 47.00 | 47.00 | 41.40 | 42.00 | 966 | NASDAQ | CHEK | Tue, Feb 5, 2019 | 49.00 | 50.80 | 45.40 | 45.80 | 965 | NASDAQ | CHEK | Mon, Feb 4, 2019 | 51.60 | 52.00 | 47.00 | 49.80 | 964 | NASDAQ | CHEK | Fri, Feb 1, 2019 | 71.80 | 73.20 | 63.20 | 68.80 | 963 | NASDAQ | CHEK | Thu, Jan 31, 2019 | 72.20 | 76.00 | 68.00 | 70.80 | 962 | NASDAQ | CHEK | Wed, Jan 30, 2019 | 79.00 | 83.20 | 70.00 | 70.20 | 961 | NASDAQ | CHEK | Tue, Jan 29, 2019 | 70.40 | 84.00 | 70.40 | 78.00 | 960 | NASDAQ | CHEK | Mon, Jan 28, 2019 | 71.00 | 79.60 | 68.00 | 70.40 | 959 | NASDAQ | CHEK | Fri, Jan 25, 2019 | 57.97 | 72.24 | 57.20 | 68.20 | 958 | NASDAQ | CHEK | Thu, Jan 24, 2019 | 55.75 | 56.12 | 55.00 | 55.20 | 957 | NASDAQ | CHEK | Wed, Jan 23, 2019 | 56.20 | 57.00 | 55.00 | 55.80 | 956 | NASDAQ | CHEK | Tue, Jan 22, 2019 | 53.20 | 56.00 | 53.20 | 55.60 | 955 | NASDAQ | CHEK | Fri, Jan 18, 2019 | 55.48 | 56.00 | 55.20 | 55.40 | 954 | NASDAQ | CHEK | Thu, Jan 17, 2019 | 56.00 | 56.00 | 55.21 | 56.00 | 953 | NASDAQ | CHEK | Wed, Jan 16, 2019 | 55.20 | 56.72 | 55.00 | 55.00 | 952 | NASDAQ | CHEK | Tue, Jan 15, 2019 | 54.60 | 56.80 | 53.11 | 54.80 | 951 | NASDAQ | CHEK | Mon, Jan 14, 2019 | 57.00 | 57.00 | 52.00 | 52.40 | 950 | NASDAQ | CHEK | Fri, Jan 11, 2019 | 57.40 | 60.00 | 57.40 | 58.80 | 949 | NASDAQ | CHEK | Thu, Jan 10, 2019 | 56.20 | 57.60 | 55.00 | 57.60 | 948 | NASDAQ | CHEK | Wed, Jan 9, 2019 | 52.80 | 55.40 | 52.80 | 55.40 | 947 | NASDAQ | CHEK | Tue, Jan 8, 2019 | 54.22 | 55.60 | 50.40 | 53.40 | 946 | NASDAQ | CHEK | Mon, Jan 7, 2019 | 50.20 | 55.00 | 50.20 | 54.00 | 945 | NASDAQ | CHEK | Fri, Jan 4, 2019 | 49.00 | 55.80 | 48.41 | 50.00 | 944 | NASDAQ | CHEK | Thu, Jan 3, 2019 | 46.51 | 49.00 | 45.29 | 48.60 | 943 | NASDAQ | CHEK | Wed, Jan 2, 2019 | 43.82 | 45.40 | 43.40 | 45.40 | 942 | NASDAQ | CHEK | Mon, Dec 31, 2018 | 42.00 | 43.80 | 41.20 | 43.00 | 941 | NASDAQ | CHEK | Fri, Dec 28, 2018 | 40.20 | 43.00 | 40.20 | 42.00 | 940 | NASDAQ | CHEK | Thu, Dec 27, 2018 | 40.40 | 42.60 | 40.00 | 41.00 | 939 | NASDAQ | CHEK | Wed, Dec 26, 2018 | 41.40 | 49.58 | 39.01 | 40.80 | 938 | NASDAQ | CHEK | Mon, Dec 24, 2018 | 41.60 | 48.77 | 41.60 | 41.60 | 937 | NASDAQ | CHEK | Fri, Dec 21, 2018 | 43.80 | 51.60 | 32.40 | 42.40 | 936 | NASDAQ | CHEK | Thu, Dec 20, 2018 | 42.20 | 44.78 | 42.20 | 43.60 | 935 | NASDAQ | CHEK | Wed, Dec 19, 2018 | 43.60 | 47.78 | 41.40 | 44.60 | 934 | NASDAQ | CHEK | Tue, Dec 18, 2018 | 50.00 | 54.40 | 46.00 | 46.00 | 933 | NASDAQ | CHEK | Mon, Dec 17, 2018 | 61.40 | 61.40 | 50.00 | 51.00 | 932 | NASDAQ | CHEK | Fri, Dec 14, 2018 | 63.60 | 65.69 | 57.00 | 58.50 | 931 | NASDAQ | CHEK | Thu, Dec 13, 2018 | 69.00 | 79.60 | 62.40 | 65.80 | 930 | NASDAQ | CHEK | Wed, Dec 12, 2018 | 65.20 | 66.00 | 62.40 | 65.60 | 929 | NASDAQ | CHEK | Tue, Dec 11, 2018 | 62.80 | 67.60 | 62.71 | 65.60 | 928 | NASDAQ | CHEK | Mon, Dec 10, 2018 | 64.20 | 68.81 | 63.00 | 63.00 | 927 | NASDAQ | CHEK | Fri, Dec 7, 2018 | 63.80 | 65.69 | 62.80 | 64.40 | 926 | NASDAQ | CHEK | Thu, Dec 6, 2018 | 65.00 | 66.00 | 62.00 | 62.60 | 925 | NASDAQ | CHEK | Tue, Dec 4, 2018 | 67.40 | 69.19 | 65.20 | 65.80 | 924 | NASDAQ | CHEK | Mon, Dec 3, 2018 | 68.00 | 69.40 | 66.22 | 66.60 | 923 | NASDAQ | CHEK | Fri, Nov 30, 2018 | 65.60 | 69.00 | 65.40 | 68.00 | 922 | NASDAQ | CHEK | Thu, Nov 29, 2018 | 62.80 | 66.00 | 62.80 | 65.00 | 921 | NASDAQ | CHEK | Wed, Nov 28, 2018 | 62.60 | 66.00 | 62.60 | 63.60 | 920 | NASDAQ | CHEK | Tue, Nov 27, 2018 | 66.20 | 68.00 | 62.00 | 62.00 | 919 | NASDAQ | CHEK | Mon, Nov 26, 2018 | 70.00 | 71.60 | 66.26 | 67.00 | 918 | NASDAQ | CHEK | Fri, Nov 23, 2018 | 68.40 | 71.00 | 68.20 | 69.40 | 917 | NASDAQ | CHEK | Wed, Nov 21, 2018 | 67.20 | 71.00 | 67.20 | 69.40 | 916 | NASDAQ | CHEK | Tue, Nov 20, 2018 | 67.40 | 67.92 | 65.00 | 67.80 | 915 | NASDAQ | CHEK | Mon, Nov 19, 2018 | 68.40 | 73.40 | 65.00 | 68.10 | 914 | NASDAQ | CHEK | Fri, Nov 16, 2018 | 66.00 | 71.32 | 66.00 | 68.80 | 913 | NASDAQ | CHEK | Thu, Nov 15, 2018 | 68.60 | 72.60 | 64.00 | 66.80 | 912 | NASDAQ | CHEK | Wed, Nov 14, 2018 | 69.40 | 73.40 | 66.00 | 66.60 | 911 | NASDAQ | CHEK | Tue, Nov 13, 2018 | 76.00 | 76.27 | 67.20 | 70.00 | 910 | NASDAQ | CHEK | Mon, Nov 12, 2018 | 74.80 | 76.23 | 72.60 | 74.00 | 909 | NASDAQ | CHEK | Fri, Nov 9, 2018 | 75.40 | 75.48 | 72.60 | 74.80 | 908 | NASDAQ | CHEK | Thu, Nov 8, 2018 | 72.80 | 78.60 | 72.00 | 77.80 | 907 | NASDAQ | CHEK | Wed, Nov 7, 2018 | 76.20 | 78.35 | 74.20 | 74.20 | 906 | NASDAQ | CHEK | Tue, Nov 6, 2018 | 77.00 | 77.80 | 74.20 | 76.80 | 905 | NASDAQ | CHEK | Mon, Nov 5, 2018 | 75.20 | 81.20 | 74.40 | 75.80 | 904 | NASDAQ | CHEK | Fri, Nov 2, 2018 | 78.80 | 82.40 | 75.20 | 76.80 | 903 | NASDAQ | CHEK | Thu, Nov 1, 2018 | 71.60 | 83.97 | 71.40 | 79.20 | 902 | NASDAQ | CHEK | Wed, Oct 31, 2018 | 71.40 | 74.00 | 71.40 | 71.40 | 901 | NASDAQ | CHEK | Tue, Oct 30, 2018 | 74.00 | 74.95 | 71.40 | 71.40 | 900 | NASDAQ | CHEK | Mon, Oct 29, 2018 | 73.80 | 75.71 | 71.70 | 75.20 | 899 | NASDAQ | CHEK | Fri, Oct 26, 2018 | 73.40 | 74.80 | 72.20 | 72.80 | 898 | NASDAQ | CHEK | Thu, Oct 25, 2018 | 70.20 | 75.80 | 70.20 | 75.00 | 897 | NASDAQ | CHEK | Wed, Oct 24, 2018 | 70.60 | 73.40 | 70.40 | 71.00 | 896 | NASDAQ | CHEK | Tue, Oct 23, 2018 | 71.40 | 72.56 | 70.40 | 70.40 | 895 | NASDAQ | CHEK | Mon, Oct 22, 2018 | 73.20 | 73.95 | 70.60 | 71.20 | 894 | NASDAQ | CHEK | Fri, Oct 19, 2018 | 74.40 | 77.20 | 72.60 | 73.20 | 893 | NASDAQ | CHEK | Thu, Oct 18, 2018 | 75.20 | 77.00 | 72.00 | 75.80 | 892 | NASDAQ | CHEK | Wed, Oct 17, 2018 | 73.60 | 76.60 | 71.00 | 76.00 | 891 | NASDAQ | CHEK | Tue, Oct 16, 2018 | 71.00 | 77.44 | 71.00 | 73.00 | 890 | NASDAQ | CHEK | Mon, Oct 15, 2018 | 75.00 | 77.46 | 72.00 | 75.80 | 889 | NASDAQ | CHEK | Fri, Oct 12, 2018 | 75.40 | 77.98 | 73.00 | 74.00 | 888 | NASDAQ | CHEK | Thu, Oct 11, 2018 | 77.40 | 78.50 | 73.80 | 74.60 | 887 | NASDAQ | CHEK | Wed, Oct 10, 2018 | 79.00 | 80.80 | 76.40 | 78.70 | 886 | NASDAQ | CHEK | Tue, Oct 9, 2018 | 77.20 | 83.00 | 77.20 | 80.00 | 885 | NASDAQ | CHEK | Mon, Oct 8, 2018 | 78.80 | 80.00 | 76.40 | 77.00 | 884 | NASDAQ | CHEK | Fri, Oct 5, 2018 | 79.40 | 80.80 | 76.60 | 78.90 | 883 | NASDAQ | CHEK | Thu, Oct 4, 2018 | 82.40 | 83.60 | 76.00 | 80.00 | 882 | NASDAQ | CHEK | Wed, Oct 3, 2018 | 79.84 | 85.00 | 79.84 | 81.80 | 881 | NASDAQ | CHEK | Tue, Oct 2, 2018 | 83.00 | 85.00 | 79.00 | 79.00 | 880 | NASDAQ | CHEK | Mon, Oct 1, 2018 | 79.60 | 84.60 | 79.60 | 83.40 | 879 | NASDAQ | CHEK | Fri, Sep 28, 2018 | 80.60 | 83.60 | 79.00 | 80.00 | 878 | NASDAQ | CHEK | Thu, Sep 27, 2018 | 79.64 | 82.00 | 79.43 | 81.00 | 877 | NASDAQ | CHEK | Wed, Sep 26, 2018 | 79.00 | 80.00 | 77.40 | 79.80 | 876 | NASDAQ | CHEK | Tue, Sep 25, 2018 | 78.80 | 79.85 | 76.40 | 79.20 | 875 | NASDAQ | CHEK | Mon, Sep 24, 2018 | 76.60 | 81.40 | 75.90 | 78.40 | 874 | NASDAQ | CHEK | Fri, Sep 21, 2018 | 73.00 | 78.00 | 70.42 | 76.20 | 873 | NASDAQ | CHEK | Thu, Sep 20, 2018 | 76.40 | 77.75 | 72.00 | 73.00 | 872 | NASDAQ | CHEK | Wed, Sep 19, 2018 | 74.80 | 79.65 | 74.13 | 76.40 | 871 | NASDAQ | CHEK | Tue, Sep 18, 2018 | 70.20 | 87.20 | 69.80 | 76.00 | 870 | NASDAQ | CHEK | Mon, Sep 17, 2018 | 70.80 | 71.00 | 68.20 | 69.80 | 869 | NASDAQ | CHEK | Fri, Sep 14, 2018 | 70.40 | 71.80 | 66.60 | 69.60 | 868 | NASDAQ | CHEK | Thu, Sep 13, 2018 | 73.00 | 73.00 | 68.60 | 70.80 | 867 | NASDAQ | CHEK | Wed, Sep 12, 2018 | 69.80 | 72.72 | 69.80 | 70.00 | 866 | NASDAQ | CHEK | Tue, Sep 11, 2018 | 73.60 | 73.60 | 66.64 | 72.00 | 865 | NASDAQ | CHEK | Mon, Sep 10, 2018 | 81.60 | 81.60 | 72.17 | 73.60 | 864 | NASDAQ | CHEK | Fri, Sep 7, 2018 | 80.20 | 80.78 | 79.60 | 79.60 | 863 | NASDAQ | CHEK | Thu, Sep 6, 2018 | 80.00 | 83.60 | 79.60 | 80.40 | 862 | NASDAQ | CHEK | Wed, Sep 5, 2018 | 84.00 | 84.00 | 79.60 | 79.60 | 861 | NASDAQ | CHEK | Tue, Sep 4, 2018 | 86.20 | 90.00 | 80.00 | 82.60 | 860 | NASDAQ | CHEK | Fri, Aug 31, 2018 | 80.80 | 83.80 | 78.60 | 80.60 | 859 | NASDAQ | CHEK | Thu, Aug 30, 2018 | 78.40 | 80.80 | 77.00 | 80.80 | 858 | NASDAQ | CHEK | Wed, Aug 29, 2018 | 73.00 | 78.00 | 70.76 | 76.80 | 857 | NASDAQ | CHEK | Tue, Aug 28, 2018 | 71.40 | 75.00 | 71.40 | 72.60 | 856 | NASDAQ | CHEK | Mon, Aug 27, 2018 | 70.00 | 72.98 | 68.80 | 72.18 | 855 | NASDAQ | CHEK | Fri, Aug 24, 2018 | 69.40 | 71.00 | 69.00 | 70.20 | 854 | NASDAQ | CHEK | Thu, Aug 23, 2018 | 70.00 | 71.00 | 69.00 | 69.40 | 853 | NASDAQ | CHEK | Wed, Aug 22, 2018 | 67.40 | 70.27 | 66.95 | 69.20 | 852 | NASDAQ | CHEK | Tue, Aug 21, 2018 | 67.20 | 69.15 | 65.95 | 67.60 | 851 | NASDAQ | CHEK | Mon, Aug 20, 2018 | 65.00 | 72.60 | 65.00 | 66.00 | 850 | NASDAQ | CHEK | Fri, Aug 17, 2018 | 67.40 | 67.40 | 65.60 | 67.40 | 849 | NASDAQ | CHEK | Thu, Aug 16, 2018 | 66.60 | 69.53 | 64.40 | 67.40 | 848 | NASDAQ | CHEK | Wed, Aug 15, 2018 | 68.00 | 70.34 | 66.60 | 66.60 | 847 | NASDAQ | CHEK | Tue, Aug 14, 2018 | 70.00 | 70.00 | 67.62 | 67.80 | 846 | NASDAQ | CHEK | Mon, Aug 13, 2018 | 65.40 | 73.37 | 63.64 | 70.60 | 845 | NASDAQ | CHEK | Fri, Aug 10, 2018 | 64.20 | 65.35 | 61.65 | 64.40 | 844 | NASDAQ | CHEK | Thu, Aug 9, 2018 | 63.83 | 66.00 | 63.60 | 64.40 | 843 | NASDAQ | CHEK | Wed, Aug 8, 2018 | 66.60 | 66.60 | 64.00 | 66.00 | 842 | NASDAQ | CHEK | Tue, Aug 7, 2018 | 66.60 | 67.60 | 65.13 | 67.00 | 841 | NASDAQ | CHEK | Mon, Aug 6, 2018 | 67.80 | 67.80 | 64.32 | 67.40 | 840 | NASDAQ | CHEK | Fri, Aug 3, 2018 | 66.80 | 68.00 | 64.80 | 65.40 | 839 | NASDAQ | CHEK | Thu, Aug 2, 2018 | 69.00 | 70.60 | 64.00 | 64.80 | 838 | NASDAQ | CHEK | Wed, Aug 1, 2018 | 75.80 | 75.80 | 70.00 | 70.80 | 837 | NASDAQ | CHEK | Tue, Jul 31, 2018 | 66.00 | 75.20 | 64.82 | 75.20 | 836 | NASDAQ | CHEK | Mon, Jul 30, 2018 | 64.40 | 69.24 | 63.62 | 64.80 | 835 | NASDAQ | CHEK | Fri, Jul 27, 2018 | 67.40 | 68.93 | 63.20 | 64.20 | 834 | NASDAQ | CHEK | Thu, Jul 26, 2018 | 67.20 | 69.00 | 65.20 | 66.40 | 833 | NASDAQ | CHEK | Wed, Jul 25, 2018 | 70.80 | 73.90 | 67.01 | 68.20 | 832 | NASDAQ | CHEK | Tue, Jul 24, 2018 | 73.20 | 75.20 | 70.40 | 70.40 | 831 | NASDAQ | CHEK | Mon, Jul 23, 2018 | 73.40 | 74.83 | 73.00 | 73.00 | 830 | NASDAQ | CHEK | Fri, Jul 20, 2018 | 74.20 | 74.88 | 73.00 | 73.80 | 829 | NASDAQ | CHEK | Thu, Jul 19, 2018 | 76.00 | 77.80 | 72.69 | 74.60 | 828 | NASDAQ | CHEK | Wed, Jul 18, 2018 | 77.60 | 77.80 | 75.40 | 75.80 | 827 | NASDAQ | CHEK | Tue, Jul 17, 2018 | 77.20 | 78.10 | 75.20 | 76.20 | 826 | NASDAQ | CHEK | Mon, Jul 16, 2018 | 78.20 | 78.90 | 76.00 | 77.20 | 825 | NASDAQ | CHEK | Fri, Jul 13, 2018 | 79.40 | 79.40 | 77.00 | 78.00 | 824 | NASDAQ | CHEK | Thu, Jul 12, 2018 | 82.20 | 82.30 | 77.20 | 79.60 | 823 | NASDAQ | CHEK | Wed, Jul 11, 2018 | 83.20 | 84.00 | 81.02 | 81.80 | 822 | NASDAQ | CHEK | Tue, Jul 10, 2018 | 83.00 | 84.38 | 81.65 | 82.00 | 821 | NASDAQ | CHEK | Mon, Jul 9, 2018 | 81.80 | 84.40 | 80.00 | 83.20 | 820 | NASDAQ | CHEK | Fri, Jul 6, 2018 | 79.00 | 81.40 | 78.80 | 80.60 | 819 | NASDAQ | CHEK | Thu, Jul 5, 2018 | 78.80 | 80.00 | 78.80 | 80.00 | 818 | NASDAQ | CHEK | Tue, Jul 3, 2018 | 78.20 | 79.10 | 78.20 | 78.80 | 817 | NASDAQ | CHEK | Mon, Jul 2, 2018 | 81.00 | 81.66 | 72.80 | 78.00 | 816 | NASDAQ | CHEK | Fri, Jun 29, 2018 | 80.80 | 82.78 | 80.40 | 81.00 | 815 | NASDAQ | CHEK | Thu, Jun 28, 2018 | 82.00 | 84.40 | 79.80 | 81.40 | 814 | NASDAQ | CHEK | Wed, Jun 27, 2018 | 80.20 | 84.65 | 78.60 | 81.25 | 813 | NASDAQ | CHEK | Tue, Jun 26, 2018 | 83.00 | 83.00 | 80.00 | 80.80 | 812 | NASDAQ | CHEK | Mon, Jun 25, 2018 | 84.20 | 84.46 | 81.20 | 82.60 | 811 | NASDAQ | CHEK | Fri, Jun 22, 2018 | 82.20 | 85.70 | 81.20 | 84.60 | 810 | NASDAQ | CHEK | Thu, Jun 21, 2018 | 83.00 | 83.80 | 80.20 | 82.20 | 809 | NASDAQ | CHEK | Wed, Jun 20, 2018 | 86.00 | 86.00 | 82.40 | 83.40 | 808 | NASDAQ | CHEK | Tue, Jun 19, 2018 | 88.80 | 88.80 | 83.00 | 86.00 | 807 | NASDAQ | CHEK | Mon, Jun 18, 2018 | 79.80 | 90.78 | 79.45 | 85.20 | 806 | NASDAQ | CHEK | Fri, Jun 15, 2018 | 82.00 | 82.40 | 77.60 | 79.80 | 805 | NASDAQ | CHEK | Thu, Jun 14, 2018 | 83.40 | 84.20 | 82.00 | 82.40 | 804 | NASDAQ | CHEK | Wed, Jun 13, 2018 | 85.40 | 85.40 | 83.42 | 83.80 | 803 | NASDAQ | CHEK | Tue, Jun 12, 2018 | 84.80 | 88.00 | 83.60 | 85.00 | 802 | NASDAQ | CHEK | Mon, Jun 11, 2018 | 84.00 | 85.16 | 82.60 | 84.60 | 801 | NASDAQ | CHEK | Fri, Jun 8, 2018 | 83.80 | 85.60 | 82.60 | 84.40 | 800 | NASDAQ | CHEK | Thu, Jun 7, 2018 | 86.20 | 87.60 | 82.47 | 84.00 | 799 | NASDAQ | CHEK | Wed, Jun 6, 2018 | 87.40 | 90.20 | 85.00 | 85.20 | 798 | NASDAQ | CHEK | Tue, Jun 5, 2018 | 90.20 | 94.80 | 87.00 | 88.00 | 797 | NASDAQ | CHEK | Mon, Jun 4, 2018 | 84.80 | 91.60 | 82.80 | 90.20 | 796 | NASDAQ | CHEK | Fri, Jun 1, 2018 | 83.00 | 86.80 | 81.20 | 83.20 | 795 | NASDAQ | CHEK | Thu, May 31, 2018 | 84.20 | 85.29 | 82.20 | 83.20 | 794 | NASDAQ | CHEK | Wed, May 30, 2018 | 83.00 | 86.00 | 80.80 | 84.80 | 793 | NASDAQ | CHEK | Tue, May 29, 2018 | 84.60 | 84.95 | 81.20 | 82.80 | 792 | NASDAQ | CHEK | Fri, May 25, 2018 | 86.20 | 89.20 | 82.40 | 84.80 | 791 | NASDAQ | CHEK | Thu, May 24, 2018 | 89.80 | 91.60 | 83.20 | 86.80 | 790 | NASDAQ | CHEK | Wed, May 23, 2018 | 100.00 | 100.00 | 88.20 | 88.20 | 789 | NASDAQ | CHEK | Tue, May 22, 2018 | 100.60 | 104.00 | 91.20 | 93.00 | 788 | NASDAQ | CHEK | Mon, May 21, 2018 | 86.60 | 95.00 | 85.40 | 89.60 | 787 | NASDAQ | CHEK | Fri, May 18, 2018 | 95.40 | 95.40 | 85.62 | 88.00 | 786 | NASDAQ | CHEK | Thu, May 17, 2018 | 103.00 | 108.60 | 93.60 | 95.60 | 785 | NASDAQ | CHEK | Wed, May 16, 2018 | 80.40 | 99.00 | 78.45 | 97.40 | 784 | NASDAQ | CHEK | Tue, May 15, 2018 | 83.60 | 83.60 | 79.40 | 81.00 | 783 | NASDAQ | CHEK | Mon, May 14, 2018 | 83.60 | 84.58 | 76.20 | 82.20 | 782 | NASDAQ | CHEK | Fri, May 11, 2018 | 87.00 | 87.00 | 81.00 | 82.60 | 781 | NASDAQ | CHEK | Thu, May 10, 2018 | 88.00 | 89.00 | 84.00 | 85.80 | 780 | NASDAQ | CHEK | Wed, May 9, 2018 | 90.00 | 92.40 | 84.00 | 86.20 | 779 | NASDAQ | CHEK | Tue, May 8, 2018 | 90.00 | 94.00 | 84.00 | 89.80 | 778 | NASDAQ | CHEK | Mon, May 7, 2018 | 96.20 | 96.60 | 84.00 | 86.20 | 777 | NASDAQ | CHEK | Fri, May 4, 2018 | 98.20 | 99.40 | 90.00 | 91.00 | 776 | NASDAQ | CHEK | Thu, May 3, 2018 | 240.20 | 243.22 | 173.40 | 176.20 | 775 | NASDAQ | CHEK | Wed, May 2, 2018 | 220.00 | 283.60 | 219.80 | 244.40 | 774 | NASDAQ | CHEK | Tue, May 1, 2018 | 250.20 | 312.00 | 240.20 | 268.80 | 773 | NASDAQ | CHEK | Mon, Apr 30, 2018 | 178.00 | 294.00 | 151.60 | 255.80 | 772 | NASDAQ | CHEK | Fri, Apr 27, 2018 | 168.80 | 227.20 | 127.60 | 180.40 | 771 | NASDAQ | CHEK | Thu, Apr 26, 2018 | 199.00 | 204.20 | 157.40 | 159.20 | 770 | NASDAQ | CHEK | Wed, Apr 25, 2018 | 375.40 | 395.60 | 246.00 | 257.40 | 769 | NASDAQ | CHEK | Tue, Apr 24, 2018 | 155.40 | 357.60 | 154.00 | 297.40 | 768 | NASDAQ | CHEK | Mon, Apr 23, 2018 | 81.00 | 156.00 | 80.60 | 145.20 | 767 | NASDAQ | CHEK | Fri, Apr 20, 2018 | 79.77 | 82.22 | 78.62 | 81.00 | 766 | NASDAQ | CHEK | Thu, Apr 19, 2018 | 90.04 | 90.04 | 77.00 | 80.00 | 765 | NASDAQ | CHEK | Wed, Apr 18, 2018 | 109.44 | 114.00 | 83.80 | 87.16 | 764 | NASDAQ | CHEK | Tue, Apr 17, 2018 | 84.20 | 135.80 | 84.20 | 99.40 | 763 | NASDAQ | CHEK | Mon, Apr 16, 2018 | 82.80 | 89.41 | 80.02 | 82.80 | 762 | NASDAQ | CHEK | Fri, Apr 13, 2018 | 78.02 | 84.80 | 78.00 | 80.80 | 761 | NASDAQ | CHEK | Thu, Apr 12, 2018 | 80.00 | 80.00 | 76.40 | 78.41 | 760 | NASDAQ | CHEK | Wed, Apr 11, 2018 | 77.60 | 80.58 | 70.60 | 76.40 | 759 | NASDAQ | CHEK | Tue, Apr 10, 2018 | 75.12 | 75.38 | 62.40 | 72.80 | 758 | NASDAQ | CHEK | Mon, Apr 9, 2018 | 74.00 | 78.54 | 74.00 | 75.60 | 757 | NASDAQ | CHEK | Fri, Apr 6, 2018 | 83.20 | 83.20 | 71.80 | 71.80 | 756 | NASDAQ | CHEK | Thu, Apr 5, 2018 | 108.00 | 108.00 | 71.62 | 84.00 | 755 | NASDAQ | CHEK | Wed, Apr 4, 2018 | 114.78 | 115.80 | 86.60 | 104.00 | 754 | NASDAQ | CHEK | Tue, Apr 3, 2018 | 120.05 | 126.72 | 110.45 | 112.75 | 753 | NASDAQ | CHEK | Mon, Apr 2, 2018 | 124.30 | 126.72 | 121.20 | 123.58 | 752 | NASDAQ | CHEK | Thu, Mar 29, 2018 | 124.80 | 126.72 | 120.00 | 124.30 | 751 | NASDAQ | CHEK | Wed, Mar 28, 2018 | 131.95 | 131.95 | 120.12 | 120.50 | 750 | NASDAQ | CHEK | Tue, Mar 27, 2018 | 129.60 | 135.98 | 120.12 | 122.64 | 749 | NASDAQ | CHEK | Mon, Mar 26, 2018 | 120.00 | 139.18 | 117.22 | 131.74 | 748 | NASDAQ | CHEK | Fri, Mar 23, 2018 | 122.38 | 122.38 | 115.20 | 118.10 | 747 | NASDAQ | CHEK | Thu, Mar 22, 2018 | 126.72 | 139.20 | 111.65 | 122.38 | 746 | NASDAQ | CHEK | Wed, Mar 21, 2018 | 148.80 | 159.36 | 115.22 | 117.60 | 745 | NASDAQ | CHEK | Tue, Mar 20, 2018 | 163.20 | 163.20 | 145.97 | 155.69 | 744 | NASDAQ | CHEK | Mon, Mar 19, 2018 | 160.80 | 163.20 | 155.52 | 158.38 | 743 | NASDAQ | CHEK | Fri, Mar 16, 2018 | 160.99 | 165.14 | 153.60 | 160.80 | 742 | NASDAQ | CHEK | Thu, Mar 15, 2018 | 167.04 | 167.04 | 151.90 | 162.70 | 741 | NASDAQ | CHEK | Wed, Mar 14, 2018 | 170.40 | 172.80 | 160.80 | 167.50 | 740 | NASDAQ | CHEK | Tue, Mar 13, 2018 | 168.00 | 172.80 | 163.22 | 170.40 | 739 | NASDAQ | CHEK | Mon, Mar 12, 2018 | 165.60 | 168.00 | 158.42 | 163.20 | 738 | NASDAQ | CHEK | Fri, Mar 9, 2018 | 168.00 | 172.80 | 158.40 | 168.00 | 737 | NASDAQ | CHEK | Thu, Mar 8, 2018 | 165.60 | 172.80 | 163.20 | 167.16 | 736 | NASDAQ | CHEK | Wed, Mar 7, 2018 | 168.00 | 172.80 | 158.74 | 168.00 | 735 | NASDAQ | CHEK | Tue, Mar 6, 2018 | 168.00 | 172.80 | 160.82 | 168.00 | 734 | NASDAQ | CHEK | Mon, Mar 5, 2018 | 156.00 | 170.40 | 153.60 | 168.00 | 733 | NASDAQ | CHEK | Fri, Mar 2, 2018 | 156.00 | 172.80 | 152.42 | 158.40 | 732 | NASDAQ | CHEK | Thu, Mar 1, 2018 | 170.40 | 177.60 | 145.92 | 160.78 | 731 | NASDAQ | CHEK | Wed, Feb 28, 2018 | 177.60 | 177.60 | 170.16 | 172.80 | 730 | NASDAQ | CHEK | Tue, Feb 27, 2018 | 180.00 | 182.40 | 170.16 | 170.16 | 729 | NASDAQ | CHEK | Mon, Feb 26, 2018 | 168.24 | 180.00 | 168.24 | 177.60 | 728 | NASDAQ | CHEK | Fri, Feb 23, 2018 | 169.87 | 172.80 | 168.74 | 172.80 | 727 | NASDAQ | CHEK | Thu, Feb 22, 2018 | 175.20 | 187.20 | 170.47 | 172.80 | 726 | NASDAQ | CHEK | Wed, Feb 21, 2018 | 189.60 | 192.00 | 174.38 | 187.20 | 725 | NASDAQ | CHEK | Tue, Feb 20, 2018 | 184.80 | 187.20 | 184.80 | 187.18 | 724 | NASDAQ | CHEK | Fri, Feb 16, 2018 | 176.69 | 187.20 | 173.06 | 182.40 | 723 | NASDAQ | CHEK | Thu, Feb 15, 2018 | 187.20 | 187.20 | 168.00 | 179.98 | 722 | NASDAQ | CHEK | Wed, Feb 14, 2018 | 189.60 | 189.60 | 182.40 | 184.87 | 721 | NASDAQ | CHEK | Tue, Feb 13, 2018 | 182.40 | 196.80 | 177.60 | 181.44 | 720 | NASDAQ | CHEK | Mon, Feb 12, 2018 | 170.40 | 182.40 | 159.60 | 179.98 | 719 | NASDAQ | CHEK | Fri, Feb 9, 2018 | 177.60 | 177.60 | 144.00 | 158.40 | 718 | NASDAQ | CHEK | Thu, Feb 8, 2018 | 170.40 | 190.06 | 170.40 | 172.80 | 717 | NASDAQ | CHEK | Wed, Feb 7, 2018 | 182.40 | 192.00 | 170.40 | 170.64 | 716 | NASDAQ | CHEK | Tue, Feb 6, 2018 | 208.80 | 211.20 | 180.79 | 180.79 | 715 | NASDAQ | CHEK | Mon, Feb 5, 2018 | 204.00 | 208.80 | 194.76 | 201.60 | 714 | NASDAQ | CHEK | Fri, Feb 2, 2018 | 211.20 | 212.76 | 203.23 | 204.02 | 713 | NASDAQ | CHEK | Thu, Feb 1, 2018 | 213.60 | 216.00 | 208.78 | 209.33 | 712 | NASDAQ | CHEK | Wed, Jan 31, 2018 | 212.40 | 220.75 | 211.20 | 214.49 | 711 | NASDAQ | CHEK | Tue, Jan 30, 2018 | 223.20 | 223.20 | 211.68 | 213.55 | 710 | NASDAQ | CHEK | Mon, Jan 29, 2018 | 220.80 | 223.20 | 211.44 | 218.38 | 709 | NASDAQ | CHEK | Fri, Jan 26, 2018 | 216.00 | 218.40 | 211.20 | 216.02 | 708 | NASDAQ | CHEK | Thu, Jan 25, 2018 | 225.60 | 225.60 | 213.60 | 218.40 | 707 | NASDAQ | CHEK | Wed, Jan 24, 2018 | 225.60 | 225.60 | 216.03 | 222.96 | 706 | NASDAQ | CHEK | Tue, Jan 23, 2018 | 223.20 | 232.56 | 213.60 | 218.40 | 705 | NASDAQ | CHEK | Mon, Jan 22, 2018 | 204.00 | 237.58 | 199.56 | 223.20 | 704 | NASDAQ | CHEK | Fri, Jan 19, 2018 | 208.80 | 214.39 | 204.72 | 205.20 | 703 | NASDAQ | CHEK | Thu, Jan 18, 2018 | 220.80 | 220.80 | 204.24 | 208.10 | 702 | NASDAQ | CHEK | Wed, Jan 17, 2018 | 227.18 | 232.08 | 208.80 | 215.90 | 701 | NASDAQ | CHEK | Tue, Jan 16, 2018 | 264.00 | 264.00 | 216.02 | 218.40 | 700 | NASDAQ | CHEK | Fri, Jan 12, 2018 | 223.20 | 272.86 | 220.80 | 234.29 | 699 | NASDAQ | CHEK | Thu, Jan 11, 2018 | 206.40 | 244.80 | 206.40 | 222.43 | 698 | NASDAQ | CHEK | Wed, Jan 10, 2018 | 240.00 | 240.00 | 196.80 | 204.00 | 697 | NASDAQ | CHEK | Tue, Jan 9, 2018 | 220.80 | 220.80 | 211.20 | 213.60 | 696 | NASDAQ | CHEK | Mon, Jan 8, 2018 | 223.20 | 225.60 | 211.20 | 220.78 | 695 | NASDAQ | CHEK | Fri, Jan 5, 2018 | 223.20 | 223.20 | 208.80 | 219.60 | 694 | NASDAQ | CHEK | Thu, Jan 4, 2018 | 208.80 | 232.32 | 208.06 | 213.60 | 693 | NASDAQ | CHEK | Wed, Jan 3, 2018 | 218.40 | 221.23 | 206.88 | 216.00 | 692 | NASDAQ | CHEK | Tue, Jan 2, 2018 | 216.00 | 219.74 | 207.65 | 218.40 | 691 | NASDAQ | CHEK | Fri, Dec 29, 2017 | 206.40 | 211.20 | 196.80 | 208.75 | 690 | NASDAQ | CHEK | Thu, Dec 28, 2017 | 206.40 | 212.45 | 195.72 | 204.00 | 689 | NASDAQ | CHEK | Wed, Dec 27, 2017 | 206.90 | 218.40 | 202.13 | 207.62 | 688 | NASDAQ | CHEK | Tue, Dec 26, 2017 | 208.80 | 220.73 | 206.40 | 211.20 | 687 | NASDAQ | CHEK | Fri, Dec 22, 2017 | 201.60 | 213.60 | 201.60 | 202.10 | 686 | NASDAQ | CHEK | Thu, Dec 21, 2017 | 202.87 | 216.00 | 202.87 | 208.80 | 685 | NASDAQ | CHEK | Wed, Dec 20, 2017 | 215.02 | 223.20 | 202.13 | 206.40 | 684 | NASDAQ | CHEK | Tue, Dec 19, 2017 | 220.80 | 225.60 | 211.20 | 213.60 | 683 | NASDAQ | CHEK | Mon, Dec 18, 2017 | 237.60 | 237.60 | 211.46 | 225.10 | 682 | NASDAQ | CHEK | Fri, Dec 15, 2017 | 220.80 | 232.80 | 211.22 | 228.00 | 681 | NASDAQ | CHEK | Thu, Dec 14, 2017 | 206.40 | 223.20 | 206.40 | 218.40 | 680 | NASDAQ | CHEK | Wed, Dec 13, 2017 | 211.20 | 216.00 | 206.42 | 212.40 | 679 | NASDAQ | CHEK | Tue, Dec 12, 2017 | 223.20 | 223.20 | 206.40 | 211.20 | 678 | NASDAQ | CHEK | Mon, Dec 11, 2017 | 216.00 | 228.00 | 206.40 | 219.24 | 677 | NASDAQ | CHEK | Fri, Dec 8, 2017 | 218.40 | 218.40 | 207.60 | 211.78 | 676 | NASDAQ | CHEK | Thu, Dec 7, 2017 | 210.55 | 210.55 | 196.82 | 206.42 | 675 | NASDAQ | CHEK | Wed, Dec 6, 2017 | 219.10 | 219.10 | 192.00 | 204.00 | 674 | NASDAQ | CHEK | Tue, Dec 5, 2017 | 235.20 | 244.80 | 216.00 | 220.80 | 673 | NASDAQ | CHEK | Mon, Dec 4, 2017 | 228.00 | 230.40 | 201.60 | 208.27 | 672 | NASDAQ | CHEK | Fri, Dec 1, 2017 | 240.00 | 240.02 | 211.20 | 218.30 | 671 | NASDAQ | CHEK | Thu, Nov 30, 2017 | 261.60 | 271.20 | 228.02 | 236.16 | 670 | NASDAQ | CHEK | Wed, Nov 29, 2017 | 247.20 | 288.00 | 244.80 | 278.02 | 669 | NASDAQ | CHEK | Tue, Nov 28, 2017 | 247.20 | 248.35 | 242.40 | 244.80 | 668 | NASDAQ | CHEK | Mon, Nov 27, 2017 | 244.80 | 249.60 | 244.80 | 247.18 | 667 | NASDAQ | CHEK | Fri, Nov 24, 2017 | 249.60 | 249.60 | 244.80 | 246.62 | 666 | NASDAQ | CHEK | Wed, Nov 22, 2017 | 256.80 | 256.80 | 244.80 | 244.80 | 665 | NASDAQ | CHEK | Tue, Nov 21, 2017 | 261.60 | 261.60 | 252.00 | 259.20 | 664 | NASDAQ | CHEK | Mon, Nov 20, 2017 | 276.00 | 285.60 | 259.20 | 261.60 | 663 | NASDAQ | CHEK | Fri, Nov 17, 2017 | 266.40 | 296.40 | 266.40 | 285.62 | 662 | NASDAQ | CHEK | Thu, Nov 16, 2017 | 300.00 | 331.20 | 259.20 | 263.95 | 661 | NASDAQ | CHEK | Wed, Nov 15, 2017 | 319.20 | 333.60 | 300.00 | 309.58 | 660 | NASDAQ | CHEK | Tue, Nov 14, 2017 | 324.00 | 336.00 | 302.40 | 317.50 | 659 | NASDAQ | CHEK | Mon, Nov 13, 2017 | 350.40 | 364.80 | 324.00 | 336.00 | 658 | NASDAQ | CHEK | Fri, Nov 10, 2017 | 308.38 | 345.60 | 307.20 | 340.80 | 657 | NASDAQ | CHEK | Thu, Nov 9, 2017 | 309.60 | 316.80 | 302.40 | 307.20 | 656 | NASDAQ | CHEK | Wed, Nov 8, 2017 | 312.00 | 321.60 | 304.80 | 321.60 | 655 | NASDAQ | CHEK | Tue, Nov 7, 2017 | 326.40 | 333.60 | 312.00 | 314.40 | 654 | NASDAQ | CHEK | Mon, Nov 6, 2017 | 345.60 | 345.60 | 314.40 | 316.80 | 653 | NASDAQ | CHEK | Fri, Nov 3, 2017 | 326.40 | 333.60 | 309.62 | 326.40 | 652 | NASDAQ | CHEK | Thu, Nov 2, 2017 | 290.40 | 331.20 | 290.40 | 319.20 | 651 | NASDAQ | CHEK | Wed, Nov 1, 2017 | 292.80 | 307.20 | 280.80 | 295.20 | 650 | NASDAQ | CHEK | Tue, Oct 31, 2017 | 336.00 | 367.20 | 300.00 | 309.60 | 649 | NASDAQ | CHEK | Mon, Oct 30, 2017 | 350.40 | 362.40 | 336.00 | 343.20 | 648 | NASDAQ | CHEK | Fri, Oct 27, 2017 | 348.00 | 355.20 | 324.00 | 350.40 | 647 | NASDAQ | CHEK | Thu, Oct 26, 2017 | 348.00 | 350.40 | 307.44 | 343.70 | 646 | NASDAQ | CHEK | Wed, Oct 25, 2017 | 432.00 | 432.00 | 343.20 | 350.16 | 645 | NASDAQ | CHEK | Tue, Oct 24, 2017 | 410.40 | 465.60 | 338.42 | 371.76 | 644 | NASDAQ | CHEK | Mon, Oct 23, 2017 | 398.40 | 413.21 | 396.00 | 403.20 | 643 | NASDAQ | CHEK | Fri, Oct 20, 2017 | 403.20 | 415.34 | 398.69 | 400.80 | 642 | NASDAQ | CHEK | Thu, Oct 19, 2017 | 407.33 | 415.20 | 400.82 | 403.61 | 641 | NASDAQ | CHEK | Wed, Oct 18, 2017 | 407.98 | 412.80 | 400.80 | 410.40 | 640 | NASDAQ | CHEK | Tue, Oct 17, 2017 | 420.00 | 420.00 | 408.00 | 410.38 | 639 | NASDAQ | CHEK | Mon, Oct 16, 2017 | 412.80 | 422.40 | 408.00 | 408.00 | 638 | NASDAQ | CHEK | Fri, Oct 13, 2017 | 453.60 | 459.41 | 415.44 | 422.40 | 637 | NASDAQ | CHEK | Thu, Oct 12, 2017 | 468.00 | 470.40 | 454.75 | 460.80 | 636 | NASDAQ | CHEK | Wed, Oct 11, 2017 | 465.60 | 472.13 | 458.57 | 465.60 | 635 | NASDAQ | CHEK | Tue, Oct 10, 2017 | 465.84 | 469.46 | 465.34 | 465.60 | 634 | NASDAQ | CHEK | Mon, Oct 9, 2017 | 477.60 | 477.60 | 458.40 | 470.40 | 633 | NASDAQ | CHEK | Fri, Oct 6, 2017 | 456.00 | 474.84 | 456.00 | 465.60 | 632 | NASDAQ | CHEK | Thu, Oct 5, 2017 | 466.58 | 466.58 | 453.60 | 453.60 | 631 | NASDAQ | CHEK | Wed, Oct 4, 2017 | 448.80 | 467.16 | 447.53 | 456.00 | 630 | NASDAQ | CHEK | Tue, Oct 3, 2017 | 451.20 | 451.20 | 444.00 | 448.80 | 629 | NASDAQ | CHEK | Mon, Oct 2, 2017 | 434.40 | 444.00 | 432.00 | 441.60 | 628 | NASDAQ | CHEK | Fri, Sep 29, 2017 | 480.00 | 480.00 | 422.40 | 438.82 | 627 | NASDAQ | CHEK | Thu, Sep 28, 2017 | 480.00 | 480.00 | 468.00 | 472.80 | 626 | NASDAQ | CHEK | Wed, Sep 27, 2017 | 436.80 | 475.20 | 436.80 | 460.80 | 625 | NASDAQ | CHEK | Tue, Sep 26, 2017 | 417.60 | 432.00 | 417.60 | 427.20 | 624 | NASDAQ | CHEK | Mon, Sep 25, 2017 | 432.00 | 432.00 | 417.60 | 417.60 | 623 | NASDAQ | CHEK | Fri, Sep 22, 2017 | 427.20 | 441.36 | 420.00 | 420.00 | 622 | NASDAQ | CHEK | Thu, Sep 21, 2017 | 441.60 | 443.88 | 435.89 | 436.46 | 621 | NASDAQ | CHEK | Wed, Sep 20, 2017 | 436.80 | 440.16 | 408.00 | 435.60 | 620 | NASDAQ | CHEK | Tue, Sep 19, 2017 | 434.40 | 456.00 | 420.00 | 420.29 | 619 | NASDAQ | CHEK | Mon, Sep 18, 2017 | 432.00 | 444.67 | 432.00 | 434.40 | 618 | NASDAQ | CHEK | Fri, Sep 15, 2017 | 444.00 | 444.00 | 424.80 | 424.80 | 617 | NASDAQ | CHEK | Thu, Sep 14, 2017 | 424.80 | 453.60 | 424.80 | 439.22 | 616 | NASDAQ | CHEK | Wed, Sep 13, 2017 | 420.00 | 441.36 | 408.00 | 420.02 | 615 | NASDAQ | CHEK | Tue, Sep 12, 2017 | 427.20 | 432.86 | 420.00 | 424.80 | 614 | NASDAQ | CHEK | Mon, Sep 11, 2017 | 443.76 | 443.76 | 420.00 | 428.69 | 613 | NASDAQ | CHEK | Fri, Sep 8, 2017 | 432.00 | 444.00 | 420.00 | 429.60 | 612 | NASDAQ | CHEK | Thu, Sep 7, 2017 | 456.00 | 457.20 | 441.60 | 444.00 | 611 | NASDAQ | CHEK | Wed, Sep 6, 2017 | 448.80 | 456.00 | 420.00 | 456.00 | 610 | NASDAQ | CHEK | Tue, Sep 5, 2017 | 448.80 | 453.60 | 422.40 | 441.58 | 609 | NASDAQ | CHEK | Fri, Sep 1, 2017 | 435.53 | 456.00 | 435.53 | 444.00 | 608 | NASDAQ | CHEK | Thu, Aug 31, 2017 | 429.60 | 441.60 | 427.44 | 434.04 | 607 | NASDAQ | CHEK | Wed, Aug 30, 2017 | 416.62 | 427.20 | 412.80 | 417.60 | 606 | NASDAQ | CHEK | Tue, Aug 29, 2017 | 424.66 | 424.66 | 408.00 | 410.40 | 605 | NASDAQ | CHEK | Mon, Aug 28, 2017 | 422.40 | 429.60 | 403.20 | 417.60 | 604 | NASDAQ | CHEK | Fri, Aug 25, 2017 | 410.42 | 424.46 | 410.40 | 415.20 | 603 | NASDAQ | CHEK | Thu, Aug 24, 2017 | 408.00 | 411.02 | 408.00 | 408.00 | 602 | NASDAQ | CHEK | Wed, Aug 23, 2017 | 420.00 | 429.60 | 403.20 | 410.40 | 601 | NASDAQ | CHEK | Tue, Aug 22, 2017 | 414.96 | 433.90 | 410.23 | 410.40 | 600 | NASDAQ | CHEK | Mon, Aug 21, 2017 | 410.40 | 424.80 | 410.40 | 415.20 | 599 | NASDAQ | CHEK | Fri, Aug 18, 2017 | 410.40 | 412.80 | 410.40 | 412.63 | 598 | NASDAQ | CHEK | Thu, Aug 17, 2017 | 410.40 | 420.00 | 408.00 | 420.00 | 597 | NASDAQ | CHEK | Wed, Aug 16, 2017 | 432.00 | 432.00 | 403.20 | 408.00 | 596 | NASDAQ | CHEK | Tue, Aug 15, 2017 | 421.27 | 436.80 | 420.00 | 420.00 | 595 | NASDAQ | CHEK | Mon, Aug 14, 2017 | 408.00 | 444.00 | 405.60 | 434.40 | 594 | NASDAQ | CHEK | Fri, Aug 11, 2017 | 420.00 | 422.40 | 396.00 | 400.80 | 593 | NASDAQ | CHEK | Thu, Aug 10, 2017 | 424.80 | 454.18 | 420.00 | 420.00 | 592 | NASDAQ | CHEK | Wed, Aug 9, 2017 | 439.20 | 439.20 | 420.00 | 420.00 | 591 | NASDAQ | CHEK | Tue, Aug 8, 2017 | 436.80 | 446.45 | 434.40 | 443.98 | 590 | NASDAQ | CHEK | Mon, Aug 7, 2017 | 441.58 | 451.20 | 434.40 | 434.40 | 589 | NASDAQ | CHEK | Fri, Aug 4, 2017 | 436.80 | 448.80 | 436.80 | 439.20 | 588 | NASDAQ | CHEK | Thu, Aug 3, 2017 | 434.40 | 441.60 | 434.40 | 441.60 | 587 | NASDAQ | CHEK | Wed, Aug 2, 2017 | 436.80 | 448.13 | 434.40 | 441.14 | 586 | NASDAQ | CHEK | Tue, Aug 1, 2017 | 441.60 | 444.00 | 439.20 | 443.04 | 585 | NASDAQ | CHEK | Mon, Jul 31, 2017 | 444.00 | 448.80 | 441.60 | 443.59 | 584 | NASDAQ | CHEK | Fri, Jul 28, 2017 | 436.80 | 444.00 | 436.80 | 444.00 | 583 | NASDAQ | CHEK | Thu, Jul 27, 2017 | 434.40 | 441.60 | 427.20 | 436.80 | 582 | NASDAQ | CHEK | Wed, Jul 26, 2017 | 441.60 | 443.98 | 436.80 | 436.80 | 581 | NASDAQ | CHEK | Tue, Jul 25, 2017 | 434.40 | 447.89 | 434.40 | 441.60 | 580 | NASDAQ | CHEK | Mon, Jul 24, 2017 | 444.00 | 448.80 | 436.80 | 439.18 | 579 | NASDAQ | CHEK | Fri, Jul 21, 2017 | 448.80 | 450.55 | 429.60 | 444.00 | 578 | NASDAQ | CHEK | Thu, Jul 20, 2017 | 444.00 | 468.00 | 436.82 | 441.60 | 577 | NASDAQ | CHEK | Wed, Jul 19, 2017 | 444.50 | 446.40 | 439.22 | 444.24 | 576 | NASDAQ | CHEK | Tue, Jul 18, 2017 | 448.80 | 453.60 | 441.60 | 446.40 | 575 | NASDAQ | CHEK | Mon, Jul 17, 2017 | 451.20 | 451.20 | 434.40 | 441.60 | 574 | NASDAQ | CHEK | Fri, Jul 14, 2017 | 441.60 | 456.00 | 429.60 | 439.20 | 573 | NASDAQ | CHEK | Thu, Jul 13, 2017 | 439.10 | 446.40 | 432.02 | 446.40 | 572 | NASDAQ | CHEK | Wed, Jul 12, 2017 | 432.24 | 446.40 | 427.20 | 446.40 | 571 | NASDAQ | CHEK | Tue, Jul 11, 2017 | 453.60 | 456.00 | 420.00 | 427.20 | 570 | NASDAQ | CHEK | Mon, Jul 10, 2017 | 468.00 | 468.00 | 444.00 | 446.40 | 569 | NASDAQ | CHEK | Fri, Jul 7, 2017 | 468.00 | 472.80 | 460.82 | 463.20 | 568 | NASDAQ | CHEK | Thu, Jul 6, 2017 | 460.80 | 465.58 | 458.40 | 458.40 | 567 | NASDAQ | CHEK | Wed, Jul 5, 2017 | 465.60 | 465.60 | 460.80 | 463.20 | 566 | NASDAQ | CHEK | Mon, Jul 3, 2017 | 463.20 | 470.40 | 460.80 | 466.78 | 565 | NASDAQ | CHEK | Fri, Jun 30, 2017 | 460.80 | 480.00 | 451.20 | 463.20 | 564 | NASDAQ | CHEK | Thu, Jun 29, 2017 | 456.00 | 458.40 | 453.50 | 453.60 | 563 | NASDAQ | CHEK | Wed, Jun 28, 2017 | 446.40 | 453.60 | 444.00 | 451.20 | 562 | NASDAQ | CHEK | Tue, Jun 27, 2017 | 446.40 | 448.80 | 444.02 | 446.40 | 561 | NASDAQ | CHEK | Mon, Jun 26, 2017 | 444.00 | 455.21 | 444.00 | 448.80 | 560 | NASDAQ | CHEK | Fri, Jun 23, 2017 | 451.20 | 460.34 | 446.40 | 451.20 | 559 | NASDAQ | CHEK | Thu, Jun 22, 2017 | 458.40 | 465.14 | 442.56 | 451.20 | 558 | NASDAQ | CHEK | Wed, Jun 21, 2017 | 441.60 | 472.80 | 434.40 | 446.40 | 557 | NASDAQ | CHEK | Tue, Jun 20, 2017 | 451.20 | 451.20 | 436.80 | 444.91 | 556 | NASDAQ | CHEK | Mon, Jun 19, 2017 | 451.20 | 451.20 | 446.40 | 446.40 | 555 | NASDAQ | CHEK | Fri, Jun 16, 2017 | 449.04 | 451.20 | 441.60 | 451.20 | 554 | NASDAQ | CHEK | Thu, Jun 15, 2017 | 448.80 | 451.20 | 448.80 | 451.20 | 553 | NASDAQ | CHEK | Wed, Jun 14, 2017 | 453.60 | 453.60 | 441.60 | 446.40 | 552 | NASDAQ | CHEK | Tue, Jun 13, 2017 | 446.40 | 460.80 | 446.40 | 458.40 | 551 | NASDAQ | CHEK | Mon, Jun 12, 2017 | 460.78 | 463.20 | 451.20 | 455.06 | 550 | NASDAQ | CHEK | Fri, Jun 9, 2017 | 456.00 | 465.60 | 456.00 | 460.80 | 549 | NASDAQ | CHEK | Thu, Jun 8, 2017 | 463.20 | 470.40 | 456.00 | 458.42 | 548 | NASDAQ | CHEK | Wed, Jun 7, 2017 | 477.60 | 477.60 | 464.21 | 464.21 | 547 | NASDAQ | CHEK | Tue, Jun 6, 2017 | 465.60 | 475.20 | 458.40 | 472.80 | 546 | NASDAQ | CHEK | Mon, Jun 5, 2017 | 477.60 | 480.00 | 458.40 | 463.20 | 545 | NASDAQ | CHEK | Fri, Jun 2, 2017 | 475.20 | 484.80 | 472.22 | 475.20 | 544 | NASDAQ | CHEK | Thu, Jun 1, 2017 | 475.20 | 487.20 | 456.00 | 479.66 | 543 | NASDAQ | CHEK | Wed, May 31, 2017 | 465.60 | 484.80 | 465.60 | 475.54 | 542 | NASDAQ | CHEK | Tue, May 30, 2017 | 470.40 | 480.00 | 468.02 | 472.82 | 541 | NASDAQ | CHEK | Fri, May 26, 2017 | 470.40 | 484.80 | 456.94 | 482.40 | 540 | NASDAQ | CHEK | Thu, May 25, 2017 | 495.36 | 499.92 | 468.48 | 482.40 | 539 | NASDAQ | CHEK | Wed, May 24, 2017 | 489.60 | 501.60 | 468.00 | 484.80 | 538 | NASDAQ | CHEK | Tue, May 23, 2017 | 499.20 | 499.20 | 477.60 | 494.40 | 537 | NASDAQ | CHEK | Mon, May 22, 2017 | 499.20 | 499.20 | 496.80 | 497.50 | 536 | NASDAQ | CHEK | Fri, May 19, 2017 | 472.80 | 499.20 | 472.80 | 496.80 | 535 | NASDAQ | CHEK | Thu, May 18, 2017 | 475.20 | 480.00 | 472.80 | 472.80 | 534 | NASDAQ | CHEK | Wed, May 17, 2017 | 472.80 | 477.60 | 472.80 | 475.20 | 533 | NASDAQ | CHEK | Tue, May 16, 2017 | 472.80 | 477.60 | 472.80 | 473.64 | 532 | NASDAQ | CHEK | Mon, May 15, 2017 | 468.00 | 477.60 | 468.00 | 475.20 | 531 | NASDAQ | CHEK | Fri, May 12, 2017 | 475.20 | 489.19 | 468.00 | 475.20 | 530 | NASDAQ | CHEK | Thu, May 11, 2017 | 484.80 | 492.86 | 472.80 | 482.40 | 529 | NASDAQ | CHEK | Wed, May 10, 2017 | 475.20 | 494.40 | 472.80 | 489.60 | 528 | NASDAQ | CHEK | Tue, May 9, 2017 | 516.00 | 523.20 | 472.80 | 479.69 | 527 | NASDAQ | CHEK | Mon, May 8, 2017 | 504.00 | 505.10 | 472.80 | 472.80 | 526 | NASDAQ | CHEK | Fri, May 5, 2017 | 499.20 | 499.20 | 494.40 | 496.80 | 525 | NASDAQ | CHEK | Thu, May 4, 2017 | 508.80 | 518.40 | 496.80 | 499.20 | 524 | NASDAQ | CHEK | Wed, May 3, 2017 | 516.00 | 528.00 | 501.60 | 513.60 | 523 | NASDAQ | CHEK | Tue, May 2, 2017 | 518.40 | 523.20 | 516.00 | 520.80 | 522 | NASDAQ | CHEK | Mon, May 1, 2017 | 523.20 | 523.20 | 520.80 | 520.80 | 521 | NASDAQ | CHEK | Fri, Apr 28, 2017 | 508.80 | 522.26 | 506.40 | 516.00 | 520 | NASDAQ | CHEK | Thu, Apr 27, 2017 | 523.20 | 523.20 | 504.00 | 511.20 | 519 | NASDAQ | CHEK | Wed, Apr 26, 2017 | 511.20 | 523.20 | 506.40 | 523.20 | 518 | NASDAQ | CHEK | Tue, Apr 25, 2017 | 518.40 | 518.40 | 508.80 | 516.00 | 517 | NASDAQ | CHEK | Mon, Apr 24, 2017 | 504.00 | 523.20 | 496.80 | 520.80 | 516 | NASDAQ | CHEK | Fri, Apr 21, 2017 | 508.80 | 513.60 | 504.00 | 508.80 | 515 | NASDAQ | CHEK | Thu, Apr 20, 2017 | 533.23 | 533.23 | 513.60 | 516.00 | 514 | NASDAQ | CHEK | Wed, Apr 19, 2017 | 520.80 | 528.00 | 520.56 | 525.60 | 513 | NASDAQ | CHEK | Tue, Apr 18, 2017 | 516.00 | 552.00 | 516.00 | 537.60 | 512 | NASDAQ | CHEK | Mon, Apr 17, 2017 | 516.00 | 549.60 | 516.00 | 518.40 | 511 | NASDAQ | CHEK | Thu, Apr 13, 2017 | 530.40 | 540.00 | 518.40 | 522.38 | 510 | NASDAQ | CHEK | Wed, Apr 12, 2017 | 532.80 | 547.20 | 516.00 | 525.60 | 509 | NASDAQ | CHEK | Tue, Apr 11, 2017 | 528.00 | 540.00 | 516.00 | 530.40 | 508 | NASDAQ | CHEK | Mon, Apr 10, 2017 | 528.00 | 528.00 | 516.79 | 516.79 | 507 | NASDAQ | CHEK | Fri, Apr 7, 2017 | 527.23 | 547.20 | 511.20 | 522.14 | 506 | NASDAQ | CHEK | Thu, Apr 6, 2017 | 540.00 | 540.00 | 516.00 | 523.20 | 505 | NASDAQ | CHEK | Wed, Apr 5, 2017 | 540.00 | 549.60 | 508.82 | 516.00 | 504 | NASDAQ | CHEK | Tue, Apr 4, 2017 | 539.98 | 571.20 | 526.63 | 547.20 | 503 | NASDAQ | CHEK | Mon, Apr 3, 2017 | 516.00 | 539.76 | 508.80 | 523.20 | 502 | NASDAQ | CHEK | Fri, Mar 31, 2017 | 511.20 | 513.60 | 501.60 | 513.60 | 501 | NASDAQ | CHEK | Thu, Mar 30, 2017 | 511.20 | 513.60 | 501.60 | 513.58 | 500 | NASDAQ | CHEK | Wed, Mar 29, 2017 | 508.80 | 518.57 | 499.20 | 499.20 | 499 | NASDAQ | CHEK | Tue, Mar 28, 2017 | 523.20 | 523.20 | 496.80 | 518.40 | 498 | NASDAQ | CHEK | Mon, Mar 27, 2017 | 520.80 | 523.20 | 506.64 | 523.20 | 497 | NASDAQ | CHEK | Fri, Mar 24, 2017 | 511.20 | 528.00 | 511.20 | 520.80 | 496 | NASDAQ | CHEK | Thu, Mar 23, 2017 | 511.20 | 511.20 | 504.00 | 508.80 | 495 | NASDAQ | CHEK | Wed, Mar 22, 2017 | 532.80 | 532.80 | 504.74 | 511.20 | 494 | NASDAQ | CHEK | Tue, Mar 21, 2017 | 508.80 | 520.80 | 499.20 | 501.60 | 493 | NASDAQ | CHEK | Mon, Mar 20, 2017 | 525.60 | 535.20 | 513.60 | 513.60 | 492 | NASDAQ | CHEK | Fri, Mar 17, 2017 | 535.20 | 535.20 | 504.00 | 520.80 | 491 | NASDAQ | CHEK | Thu, Mar 16, 2017 | 518.40 | 518.40 | 504.00 | 508.80 | 490 | NASDAQ | CHEK | Wed, Mar 15, 2017 | 511.20 | 523.08 | 504.02 | 511.20 | 489 | NASDAQ | CHEK | Tue, Mar 14, 2017 | 508.80 | 511.20 | 508.80 | 511.20 | 488 | NASDAQ | CHEK | Mon, Mar 13, 2017 | 504.00 | 519.53 | 504.00 | 508.80 | 487 | NASDAQ | CHEK | Fri, Mar 10, 2017 | 516.00 | 523.20 | 516.00 | 523.20 | 486 | NASDAQ | CHEK | Thu, Mar 9, 2017 | 511.20 | 520.80 | 511.20 | 516.00 | 485 | NASDAQ | CHEK | Wed, Mar 8, 2017 | 508.80 | 517.63 | 504.00 | 511.20 | 484 | NASDAQ | CHEK | Tue, Mar 7, 2017 | 499.20 | 525.60 | 496.80 | 504.00 | 483 | NASDAQ | CHEK | Mon, Mar 6, 2017 | 501.60 | 523.20 | 496.80 | 499.20 | 482 | NASDAQ | CHEK | Fri, Mar 3, 2017 | 523.20 | 528.00 | 506.40 | 523.20 | 481 | NASDAQ | CHEK | Thu, Mar 2, 2017 | 528.00 | 540.00 | 499.20 | 520.80 | 480 | NASDAQ | CHEK | Wed, Mar 1, 2017 | 504.00 | 528.00 | 496.80 | 527.98 | 479 | NASDAQ | CHEK | Tue, Feb 28, 2017 | 528.00 | 528.60 | 496.80 | 504.00 | 478 | NASDAQ | CHEK | Mon, Feb 27, 2017 | 532.80 | 540.00 | 528.00 | 528.00 | 477 | NASDAQ | CHEK | Fri, Feb 24, 2017 | 542.40 | 542.40 | 535.20 | 540.00 | 476 | NASDAQ | CHEK | Thu, Feb 23, 2017 | 542.40 | 544.56 | 540.00 | 544.30 | 475 | NASDAQ | CHEK | Wed, Feb 22, 2017 | 542.40 | 543.98 | 540.00 | 540.02 | 474 | NASDAQ | CHEK | Tue, Feb 21, 2017 | 542.40 | 552.00 | 535.20 | 542.40 | 473 | NASDAQ | CHEK | Fri, Feb 17, 2017 | 552.00 | 561.60 | 540.00 | 544.80 | 472 | NASDAQ | CHEK | Thu, Feb 16, 2017 | 564.00 | 564.00 | 540.00 | 549.60 | 471 | NASDAQ | CHEK | Wed, Feb 15, 2017 | 573.60 | 573.60 | 544.80 | 571.20 | 470 | NASDAQ | CHEK | Tue, Feb 14, 2017 | 578.40 | 578.40 | 566.40 | 571.20 | 469 | NASDAQ | CHEK | Mon, Feb 13, 2017 | 566.40 | 578.40 | 559.20 | 564.00 | 468 | NASDAQ | CHEK | Fri, Feb 10, 2017 | 564.00 | 576.00 | 557.04 | 564.00 | 467 | NASDAQ | CHEK | Thu, Feb 9, 2017 | 552.00 | 564.00 | 546.24 | 561.60 | 466 | NASDAQ | CHEK | Wed, Feb 8, 2017 | 554.40 | 573.60 | 549.60 | 552.00 | 465 | NASDAQ | CHEK | Tue, Feb 7, 2017 | 542.40 | 554.71 | 542.40 | 547.87 | 464 | NASDAQ | CHEK | Mon, Feb 6, 2017 | 547.20 | 554.40 | 542.69 | 547.20 | 463 | NASDAQ | CHEK | Fri, Feb 3, 2017 | 552.00 | 564.00 | 537.60 | 554.40 | 462 | NASDAQ | CHEK | Thu, Feb 2, 2017 | 540.00 | 554.40 | 537.60 | 554.40 | 461 | NASDAQ | CHEK | Wed, Feb 1, 2017 | 540.00 | 549.50 | 537.60 | 537.60 | 460 | NASDAQ | CHEK | Tue, Jan 31, 2017 | 559.20 | 570.00 | 540.00 | 542.40 | 459 | NASDAQ | CHEK | Mon, Jan 30, 2017 | 576.00 | 576.00 | 556.80 | 558.00 | 458 | NASDAQ | CHEK | Fri, Jan 27, 2017 | 585.60 | 588.00 | 559.20 | 576.00 | 457 | NASDAQ | CHEK | Thu, Jan 26, 2017 | 576.00 | 597.60 | 566.40 | 580.80 | 456 | NASDAQ | CHEK | Wed, Jan 25, 2017 | 580.80 | 597.60 | 576.00 | 576.00 | 455 | NASDAQ | CHEK | Tue, Jan 24, 2017 | 580.80 | 595.20 | 575.76 | 580.80 | 454 | NASDAQ | CHEK | Mon, Jan 23, 2017 | 585.60 | 585.60 | 559.20 | 571.20 | 453 | NASDAQ | CHEK | Fri, Jan 20, 2017 | 572.88 | 600.00 | 572.88 | 580.80 | 452 | NASDAQ | CHEK | Thu, Jan 19, 2017 | 573.60 | 609.60 | 559.20 | 568.80 | 451 | NASDAQ | CHEK | Wed, Jan 18, 2017 | 562.94 | 566.40 | 559.20 | 562.44 | 450 | NASDAQ | CHEK | Tue, Jan 17, 2017 | 566.14 | 612.00 | 559.20 | 559.20 | 449 | NASDAQ | CHEK | Fri, Jan 13, 2017 | 564.00 | 564.00 | 559.20 | 559.20 | 448 | NASDAQ | CHEK | Thu, Jan 12, 2017 | 556.80 | 564.00 | 556.80 | 559.20 | 447 | NASDAQ | CHEK | Wed, Jan 11, 2017 | 576.00 | 576.00 | 559.20 | 564.00 | 446 | NASDAQ | CHEK | Tue, Jan 10, 2017 | 576.00 | 578.40 | 571.20 | 576.00 | 445 | NASDAQ | CHEK | Mon, Jan 9, 2017 | 583.20 | 583.20 | 566.40 | 576.00 | 444 | NASDAQ | CHEK | Fri, Jan 6, 2017 | 588.00 | 588.00 | 583.20 | 583.20 | 443 | NASDAQ | CHEK | Thu, Jan 5, 2017 | 595.20 | 633.60 | 580.80 | 585.60 | 442 | NASDAQ | CHEK | Wed, Jan 4, 2017 | 576.00 | 597.60 | 576.00 | 588.00 | 441 | NASDAQ | CHEK | Tue, Jan 3, 2017 | 578.40 | 597.60 | 573.60 | 573.60 | 440 | NASDAQ | CHEK | Fri, Dec 30, 2016 | 571.08 | 571.08 | 559.20 | 564.00 | 439 | NASDAQ | CHEK | Thu, Dec 29, 2016 | 567.98 | 568.27 | 559.20 | 564.00 | 438 | NASDAQ | CHEK | Wed, Dec 28, 2016 | 561.60 | 566.38 | 559.20 | 561.60 | 437 | NASDAQ | CHEK | Tue, Dec 27, 2016 | 568.80 | 580.80 | 561.60 | 568.80 | 436 | NASDAQ | CHEK | Fri, Dec 23, 2016 | 555.22 | 564.00 | 552.00 | 561.60 | 435 | NASDAQ | CHEK | Thu, Dec 22, 2016 | 556.80 | 560.16 | 552.00 | 554.40 | 434 | NASDAQ | CHEK | Wed, Dec 21, 2016 | 554.40 | 559.20 | 552.00 | 552.00 | 433 | NASDAQ | CHEK | Tue, Dec 20, 2016 | 571.20 | 571.20 | 553.82 | 561.60 | 432 | NASDAQ | CHEK | Mon, Dec 19, 2016 | 568.80 | 578.40 | 549.60 | 566.40 | 431 | NASDAQ | CHEK | Fri, Dec 16, 2016 | 571.20 | 573.74 | 549.84 | 556.80 | 430 | NASDAQ | CHEK | Thu, Dec 15, 2016 | 576.00 | 578.40 | 564.00 | 566.40 | 429 | NASDAQ | CHEK | Wed, Dec 14, 2016 | 576.00 | 583.18 | 564.00 | 573.60 | 428 | NASDAQ | CHEK | Tue, Dec 13, 2016 | 576.00 | 580.80 | 566.40 | 576.00 | 427 | NASDAQ | CHEK | Mon, Dec 12, 2016 | 585.60 | 587.76 | 559.20 | 580.80 | 426 | NASDAQ | CHEK | Fri, Dec 9, 2016 | 576.00 | 601.51 | 554.40 | 578.40 | 425 | NASDAQ | CHEK | Thu, Dec 8, 2016 | 588.00 | 600.00 | 577.97 | 585.60 | 424 | NASDAQ | CHEK | Wed, Dec 7, 2016 | 626.40 | 627.60 | 576.00 | 597.60 | 423 | NASDAQ | CHEK | Tue, Dec 6, 2016 | 648.00 | 648.00 | 614.40 | 624.00 | 422 | NASDAQ | CHEK | Mon, Dec 5, 2016 | 643.20 | 648.00 | 608.06 | 624.00 | 421 | NASDAQ | CHEK | Fri, Dec 2, 2016 | 563.95 | 592.80 | 547.20 | 588.00 | 420 | NASDAQ | CHEK | Thu, Dec 1, 2016 | 530.16 | 564.00 | 523.20 | 547.20 | 419 | NASDAQ | CHEK | Wed, Nov 30, 2016 | 528.00 | 541.20 | 518.40 | 530.40 | 418 | NASDAQ | CHEK | Tue, Nov 29, 2016 | 537.60 | 537.60 | 518.40 | 520.80 | 417 | NASDAQ | CHEK | Mon, Nov 28, 2016 | 559.20 | 562.80 | 540.00 | 549.60 | 416 | NASDAQ | CHEK | Fri, Nov 25, 2016 | 542.40 | 559.20 | 542.40 | 559.20 | 415 | NASDAQ | CHEK | Wed, Nov 23, 2016 | 540.00 | 563.76 | 540.00 | 544.80 | 414 | NASDAQ | CHEK | Tue, Nov 22, 2016 | 602.40 | 603.00 | 552.00 | 561.60 | 413 | NASDAQ | CHEK | Mon, Nov 21, 2016 | 636.00 | 648.00 | 600.00 | 602.40 | 412 | NASDAQ | CHEK | Fri, Nov 18, 2016 | 696.00 | 696.00 | 619.97 | 631.20 | 411 | NASDAQ | CHEK | Thu, Nov 17, 2016 | 648.00 | 698.40 | 628.27 | 696.00 | 410 | NASDAQ | CHEK | Wed, Nov 16, 2016 | 600.00 | 638.40 | 590.40 | 628.80 | 409 | NASDAQ | CHEK | Tue, Nov 15, 2016 | 600.00 | 612.00 | 588.00 | 597.60 | 408 | NASDAQ | CHEK | Mon, Nov 14, 2016 | 576.00 | 600.00 | 566.40 | 597.60 | 407 | NASDAQ | CHEK | Fri, Nov 11, 2016 | 578.40 | 583.20 | 540.00 | 578.40 | 406 | NASDAQ | CHEK | Thu, Nov 10, 2016 | 520.80 | 576.00 | 506.40 | 552.00 | 405 | NASDAQ | CHEK | Wed, Nov 9, 2016 | 496.80 | 511.20 | 492.00 | 506.40 | 404 | NASDAQ | CHEK | Tue, Nov 8, 2016 | 499.20 | 506.40 | 490.58 | 494.40 | 403 | NASDAQ | CHEK | Mon, Nov 7, 2016 | 520.80 | 520.80 | 487.20 | 504.00 | 402 | NASDAQ | CHEK | Fri, Nov 4, 2016 | 492.00 | 520.80 | 482.42 | 508.80 | 401 | NASDAQ | CHEK | Thu, Nov 3, 2016 | 506.40 | 516.00 | 480.00 | 494.40 | 400 | NASDAQ | CHEK | Wed, Nov 2, 2016 | 504.00 | 518.40 | 492.00 | 508.80 | 399 | NASDAQ | CHEK | Tue, Nov 1, 2016 | 530.40 | 532.80 | 480.00 | 504.00 | 398 | NASDAQ | CHEK | Mon, Oct 31, 2016 | 540.00 | 562.66 | 528.00 | 532.80 | 397 | NASDAQ | CHEK | Fri, Oct 28, 2016 | 568.80 | 576.00 | 528.00 | 537.60 | 396 | NASDAQ | CHEK | Thu, Oct 27, 2016 | 568.80 | 708.00 | 554.40 | 559.20 | 395 | NASDAQ | CHEK | Wed, Oct 26, 2016 | 525.60 | 566.40 | 518.40 | 561.60 | 394 | NASDAQ | CHEK | Tue, Oct 25, 2016 | 571.20 | 571.20 | 520.80 | 525.60 | 393 | NASDAQ | CHEK | Mon, Oct 24, 2016 | 540.00 | 552.00 | 504.00 | 528.00 | 392 | NASDAQ | CHEK | Fri, Oct 21, 2016 | 427.20 | 427.20 | 412.80 | 424.80 | 391 | NASDAQ | CHEK | Thu, Oct 20, 2016 | 434.40 | 439.20 | 420.00 | 429.60 | 390 | NASDAQ | CHEK | Wed, Oct 19, 2016 | 446.40 | 448.80 | 432.00 | 434.40 | 389 | NASDAQ | CHEK | Tue, Oct 18, 2016 | 441.60 | 460.80 | 420.00 | 436.80 | 388 | NASDAQ | CHEK | Mon, Oct 17, 2016 | 434.40 | 460.80 | 432.00 | 441.60 | 387 | NASDAQ | CHEK | Fri, Oct 14, 2016 | 480.00 | 480.00 | 432.00 | 439.18 | 386 | NASDAQ | CHEK | Thu, Oct 13, 2016 | 446.16 | 446.16 | 432.00 | 438.96 | 385 | NASDAQ | CHEK | Wed, Oct 12, 2016 | 456.00 | 465.60 | 446.40 | 451.20 | 384 | NASDAQ | CHEK | Tue, Oct 11, 2016 | 480.00 | 480.00 | 441.07 | 451.20 | 383 | NASDAQ | CHEK | Mon, Oct 10, 2016 | 460.80 | 460.80 | 434.40 | 448.80 | 382 | NASDAQ | CHEK | Fri, Oct 7, 2016 | 463.20 | 475.18 | 456.07 | 463.20 | 381 | NASDAQ | CHEK | Thu, Oct 6, 2016 | 460.80 | 472.13 | 444.00 | 453.60 | 380 | NASDAQ | CHEK | Wed, Oct 5, 2016 | 444.00 | 475.20 | 420.00 | 460.80 | 379 | NASDAQ | CHEK | Tue, Oct 4, 2016 | 470.40 | 470.40 | 422.40 | 460.80 | 378 | NASDAQ | CHEK | Mon, Oct 3, 2016 | 477.60 | 477.60 | 463.20 | 470.40 | 377 | NASDAQ | CHEK | Fri, Sep 30, 2016 | 484.80 | 484.80 | 460.80 | 475.20 | 376 | NASDAQ | CHEK | Thu, Sep 29, 2016 | 475.20 | 480.53 | 475.20 | 477.60 | 375 | NASDAQ | CHEK | Wed, Sep 28, 2016 | 460.80 | 487.18 | 460.80 | 463.20 | 374 | NASDAQ | CHEK | Tue, Sep 27, 2016 | 482.40 | 484.80 | 460.80 | 463.20 | 373 | NASDAQ | CHEK | Mon, Sep 26, 2016 | 492.00 | 504.00 | 458.40 | 460.80 | 372 | NASDAQ | CHEK | Fri, Sep 23, 2016 | 494.40 | 504.00 | 492.00 | 492.00 | 371 | NASDAQ | CHEK | Thu, Sep 22, 2016 | 490.85 | 498.24 | 485.04 | 496.80 | 370 | NASDAQ | CHEK | Wed, Sep 21, 2016 | 467.28 | 487.20 | 467.28 | 484.82 | 369 | NASDAQ | CHEK | Tue, Sep 20, 2016 | 506.40 | 506.40 | 456.00 | 468.00 | 368 | NASDAQ | CHEK | Mon, Sep 19, 2016 | 518.02 | 520.80 | 498.96 | 508.80 | 367 | NASDAQ | CHEK | Fri, Sep 16, 2016 | 523.20 | 538.97 | 513.60 | 523.20 | 366 | NASDAQ | CHEK | Thu, Sep 15, 2016 | 532.80 | 532.80 | 516.00 | 523.20 | 365 | NASDAQ | CHEK | Wed, Sep 14, 2016 | 532.80 | 534.62 | 516.00 | 520.80 | 364 | NASDAQ | CHEK | Tue, Sep 13, 2016 | 520.80 | 547.18 | 511.44 | 523.20 | 363 | NASDAQ | CHEK | Mon, Sep 12, 2016 | 496.80 | 523.20 | 496.80 | 520.80 | 362 | NASDAQ | CHEK | Fri, Sep 9, 2016 | 513.60 | 513.60 | 486.72 | 494.42 | 361 | NASDAQ | CHEK | Thu, Sep 8, 2016 | 485.54 | 515.69 | 485.54 | 499.20 | 360 | NASDAQ | CHEK | Wed, Sep 7, 2016 | 472.80 | 504.00 | 472.80 | 489.60 | 359 | NASDAQ | CHEK | Tue, Sep 6, 2016 | 492.00 | 492.00 | 470.40 | 472.80 | 358 | NASDAQ | CHEK | Fri, Sep 2, 2016 | 480.00 | 501.60 | 480.00 | 489.60 | 357 | NASDAQ | CHEK | Thu, Sep 1, 2016 | 489.60 | 489.60 | 451.20 | 475.20 | 356 | NASDAQ | CHEK | Wed, Aug 31, 2016 | 492.00 | 499.56 | 480.00 | 487.20 | 355 | NASDAQ | CHEK | Tue, Aug 30, 2016 | 492.00 | 516.00 | 484.80 | 489.60 | 354 | NASDAQ | CHEK | Mon, Aug 29, 2016 | 458.40 | 489.60 | 444.00 | 484.80 | 353 | NASDAQ | CHEK | Fri, Aug 26, 2016 | 458.30 | 458.30 | 446.40 | 448.80 | 352 | NASDAQ | CHEK | Thu, Aug 25, 2016 | 468.00 | 468.00 | 446.40 | 448.80 | 351 | NASDAQ | CHEK | Wed, Aug 24, 2016 | 468.00 | 489.60 | 460.80 | 463.20 | 350 | NASDAQ | CHEK | Tue, Aug 23, 2016 | 450.00 | 482.40 | 448.03 | 463.20 | 349 | NASDAQ | CHEK | Mon, Aug 22, 2016 | 472.80 | 472.80 | 432.02 | 458.40 | 348 | NASDAQ | CHEK | Fri, Aug 19, 2016 | 448.80 | 470.40 | 445.70 | 467.98 | 347 | NASDAQ | CHEK | Thu, Aug 18, 2016 | 458.40 | 477.53 | 420.00 | 448.80 | 346 | NASDAQ | CHEK | Wed, Aug 17, 2016 | 475.20 | 487.18 | 427.22 | 463.20 | 345 | NASDAQ | CHEK | Tue, Aug 16, 2016 | 504.00 | 511.20 | 456.00 | 475.20 | 344 | NASDAQ | CHEK | Mon, Aug 15, 2016 | 489.60 | 492.00 | 460.80 | 492.00 | 343 | NASDAQ | CHEK | Fri, Aug 12, 2016 | 489.60 | 496.78 | 480.00 | 489.60 | 342 | NASDAQ | CHEK | Thu, Aug 11, 2016 | 516.00 | 528.00 | 480.00 | 494.40 | 341 | NASDAQ | CHEK | Wed, Aug 10, 2016 | 564.00 | 564.00 | 516.00 | 528.00 | 340 | NASDAQ | CHEK | Tue, Aug 9, 2016 | 537.60 | 576.00 | 516.12 | 564.00 | 339 | NASDAQ | CHEK | Mon, Aug 8, 2016 | 597.60 | 597.60 | 523.20 | 542.40 | 338 | NASDAQ | CHEK | Fri, Aug 5, 2016 | 768.00 | 820.80 | 609.60 | 727.20 | 337 | NASDAQ | CHEK | Thu, Aug 4, 2016 | 422.40 | 804.00 | 422.40 | 585.60 | 336 | NASDAQ | CHEK | Wed, Aug 3, 2016 | 300.29 | 336.00 | 297.60 | 333.60 | 335 | NASDAQ | CHEK | Tue, Aug 2, 2016 | 316.80 | 316.80 | 300.00 | 307.20 | 334 | NASDAQ | CHEK | Mon, Aug 1, 2016 | 307.20 | 316.80 | 302.40 | 312.00 | 333 | NASDAQ | CHEK | Fri, Jul 29, 2016 | 312.00 | 316.80 | 300.00 | 302.40 | 332 | NASDAQ | CHEK | Thu, Jul 28, 2016 | 316.80 | 336.00 | 302.40 | 318.72 | 331 | NASDAQ | CHEK | Wed, Jul 27, 2016 | 314.40 | 348.00 | 290.40 | 319.20 | 330 | NASDAQ | CHEK | Tue, Jul 26, 2016 | 309.62 | 319.20 | 300.00 | 302.42 | 329 | NASDAQ | CHEK | Mon, Jul 25, 2016 | 307.20 | 321.60 | 278.42 | 292.80 | 328 | NASDAQ | CHEK | Fri, Jul 22, 2016 | 302.40 | 311.98 | 276.67 | 283.20 | 327 | NASDAQ | CHEK | Thu, Jul 21, 2016 | 300.00 | 333.60 | 296.40 | 312.00 | 326 | NASDAQ | CHEK | Wed, Jul 20, 2016 | 276.00 | 340.56 | 276.00 | 300.00 | 325 | NASDAQ | CHEK | Tue, Jul 19, 2016 | 292.80 | 292.80 | 261.60 | 283.20 | 324 | NASDAQ | CHEK | Mon, Jul 18, 2016 | 297.60 | 307.20 | 259.20 | 278.40 | 323 | NASDAQ | CHEK | Fri, Jul 15, 2016 | 319.20 | 331.20 | 288.00 | 290.40 | 322 | NASDAQ | CHEK | Thu, Jul 14, 2016 | 348.00 | 362.40 | 312.00 | 315.60 | 321 | NASDAQ | CHEK | Wed, Jul 13, 2016 | 347.98 | 460.80 | 338.40 | 338.40 | 320 | NASDAQ | CHEK | Tue, Jul 12, 2016 | 343.20 | 350.40 | 324.00 | 336.00 | 319 | NASDAQ | CHEK | Mon, Jul 11, 2016 | 338.40 | 348.00 | 312.34 | 343.20 | 318 | NASDAQ | CHEK | Fri, Jul 8, 2016 | 324.00 | 352.80 | 312.00 | 345.60 | 317 | NASDAQ | CHEK | Thu, Jul 7, 2016 | 333.60 | 352.78 | 324.17 | 333.60 | 316 | NASDAQ | CHEK | Wed, Jul 6, 2016 | 336.00 | 352.30 | 326.40 | 326.40 | 315 | NASDAQ | CHEK | Tue, Jul 5, 2016 | 316.80 | 347.98 | 314.40 | 347.98 | 314 | NASDAQ | CHEK | Fri, Jul 1, 2016 | 331.20 | 331.20 | 312.00 | 314.40 | 313 | NASDAQ | CHEK | Thu, Jun 30, 2016 | 343.20 | 348.00 | 312.00 | 333.60 | 312 | NASDAQ | CHEK | Wed, Jun 29, 2016 | 340.80 | 369.89 | 312.00 | 343.20 | 311 | NASDAQ | CHEK | Tue, Jun 28, 2016 | 249.62 | 396.00 | 249.62 | 336.00 | 310 | NASDAQ | CHEK | Mon, Jun 27, 2016 | 239.98 | 264.00 | 239.98 | 249.60 | 309 | NASDAQ | CHEK | Fri, Jun 24, 2016 | 240.00 | 240.00 | 232.80 | 239.98 | 308 | NASDAQ | CHEK | Thu, Jun 23, 2016 | 264.00 | 264.00 | 236.40 | 239.52 | 307 | NASDAQ | CHEK | Wed, Jun 22, 2016 | 276.00 | 276.00 | 256.80 | 271.20 | 306 | NASDAQ | CHEK | Tue, Jun 21, 2016 | 290.40 | 290.40 | 246.24 | 276.00 | 305 | NASDAQ | CHEK | Mon, Jun 20, 2016 | 316.80 | 316.80 | 286.08 | 292.80 | 304 | NASDAQ | CHEK | Fri, Jun 17, 2016 | 321.58 | 321.58 | 312.00 | 312.00 | 303 | NASDAQ | CHEK | Thu, Jun 16, 2016 | 312.02 | 313.46 | 312.00 | 312.00 | 302 | NASDAQ | CHEK | Wed, Jun 15, 2016 | 321.60 | 328.80 | 312.07 | 319.20 | 301 | NASDAQ | CHEK | Tue, Jun 14, 2016 | 324.00 | 331.54 | 324.00 | 331.54 | 300 | NASDAQ | CHEK | Mon, Jun 13, 2016 | 348.00 | 352.80 | 322.66 | 331.20 | 299 | NASDAQ | CHEK | Fri, Jun 10, 2016 | 360.00 | 363.60 | 343.22 | 343.22 | 298 | NASDAQ | CHEK | Thu, Jun 9, 2016 | 336.00 | 355.20 | 329.28 | 355.20 | 297 | NASDAQ | CHEK | Wed, Jun 8, 2016 | 302.42 | 316.80 | 302.42 | 316.80 | 296 | NASDAQ | CHEK | Tue, Jun 7, 2016 | 362.40 | 362.40 | 333.60 | 336.19 | 295 | NASDAQ | CHEK | Mon, Jun 6, 2016 | 360.00 | 405.58 | 360.00 | 360.00 | 294 | NASDAQ | CHEK | Fri, Jun 3, 2016 | 373.13 | 373.13 | 336.00 | 360.00 | 293 | NASDAQ | CHEK | Thu, Jun 2, 2016 | 408.00 | 408.00 | 372.00 | 372.00 | 292 | NASDAQ | CHEK | Wed, Jun 1, 2016 | 444.00 | 448.80 | 391.20 | 393.60 | 291 | NASDAQ | CHEK | Tue, May 31, 2016 | 456.00 | 463.56 | 436.80 | 436.80 | 290 | NASDAQ | CHEK | Fri, May 27, 2016 | 456.00 | 468.00 | 456.00 | 468.00 | 289 | NASDAQ | CHEK | Thu, May 26, 2016 | 516.48 | 516.48 | 480.00 | 480.00 | 288 | NASDAQ | CHEK | Wed, May 25, 2016 | 516.00 | 532.80 | 432.02 | 480.00 | 287 | NASDAQ | CHEK | Tue, May 24, 2016 | 489.60 | 491.76 | 468.00 | 491.76 | 286 | NASDAQ | CHEK | Mon, May 23, 2016 | 480.02 | 480.02 | 436.80 | 479.98 | 285 | NASDAQ | CHEK | Fri, May 20, 2016 | 516.00 | 561.60 | 482.40 | 494.40 | 284 | NASDAQ | CHEK | Thu, May 19, 2016 | 575.98 | 575.98 | 480.00 | 508.27 | 283 | NASDAQ | CHEK | Wed, May 18, 2016 | 588.02 | 588.24 | 588.00 | 588.00 | 282 | NASDAQ | CHEK | Tue, May 17, 2016 | 576.02 | 623.98 | 576.02 | 588.24 | 281 | NASDAQ | CHEK | Mon, May 16, 2016 | 590.40 | 619.18 | 540.00 | 592.99 | 280 | NASDAQ | CHEK | Fri, May 13, 2016 | 622.94 | 622.94 | 622.94 | 622.94 | 279 | NASDAQ | CHEK | Thu, May 12, 2016 | 622.94 | 622.94 | 622.94 | 622.94 | 278 | NASDAQ | CHEK | Wed, May 11, 2016 | 621.60 | 621.60 | 590.40 | 592.82 | 277 | NASDAQ | CHEK | Tue, May 10, 2016 | 624.00 | 624.00 | 624.00 | 624.00 | 276 | NASDAQ | CHEK | Mon, May 9, 2016 | 718.70 | 718.70 | 642.50 | 642.50 | 275 | NASDAQ | CHEK | Fri, May 6, 2016 | 696.00 | 696.00 | 595.20 | 595.20 | 274 | NASDAQ | CHEK | Thu, May 5, 2016 | 648.02 | 648.02 | 648.02 | 648.02 | 273 | NASDAQ | CHEK | Wed, May 4, 2016 | 648.00 | 649.20 | 648.00 | 648.02 | 272 | NASDAQ | CHEK | Tue, May 3, 2016 | 698.40 | 698.40 | 698.40 | 698.40 | 271 | NASDAQ | CHEK | Mon, May 2, 2016 | 698.40 | 698.40 | 698.40 | 698.40 | 270 | NASDAQ | CHEK | Fri, Apr 29, 2016 | 698.40 | 698.40 | 698.40 | 698.40 | 269 | NASDAQ | CHEK | Thu, Apr 28, 2016 | 696.02 | 698.42 | 696.02 | 698.40 | 268 | NASDAQ | CHEK | Wed, Apr 27, 2016 | 696.00 | 696.00 | 696.00 | 696.00 | 267 | NASDAQ | CHEK | Tue, Apr 26, 2016 | 696.00 | 696.00 | 696.00 | 696.00 | 266 | NASDAQ | CHEK | Mon, Apr 25, 2016 | 693.60 | 696.00 | 693.60 | 696.00 | 265 | NASDAQ | CHEK | Fri, Apr 22, 2016 | 710.88 | 710.88 | 710.88 | 710.88 | 264 | NASDAQ | CHEK | Thu, Apr 21, 2016 | 710.88 | 710.88 | 710.88 | 710.88 | 263 | NASDAQ | CHEK | Wed, Apr 20, 2016 | 710.88 | 710.88 | 710.88 | 710.88 | 262 | NASDAQ | CHEK | Tue, Apr 19, 2016 | 720.00 | 720.00 | 720.00 | 720.00 | 261 | NASDAQ | CHEK | Mon, Apr 18, 2016 | 720.00 | 720.00 | 720.00 | 720.00 | 260 | NASDAQ | CHEK | Fri, Apr 15, 2016 | 702.12 | 702.12 | 702.12 | 702.12 | 259 | NASDAQ | CHEK | Thu, Apr 14, 2016 | 702.12 | 702.12 | 702.12 | 702.12 | 258 | NASDAQ | CHEK | Wed, Apr 13, 2016 | 679.20 | 696.00 | 672.00 | 672.00 | 257 | NASDAQ | CHEK | Tue, Apr 12, 2016 | 720.00 | 720.00 | 648.00 | 662.40 | 256 | NASDAQ | CHEK | Mon, Apr 11, 2016 | 714.72 | 714.72 | 714.72 | 714.72 | 255 | NASDAQ | CHEK | Fri, Apr 8, 2016 | 717.31 | 717.31 | 717.31 | 717.31 | 254 | NASDAQ | CHEK | Thu, Apr 7, 2016 | 696.00 | 721.82 | 696.00 | 710.40 | 253 | NASDAQ | CHEK | Wed, Apr 6, 2016 | 698.40 | 717.24 | 698.40 | 700.80 | 252 | NASDAQ | CHEK | Tue, Apr 5, 2016 | 720.00 | 720.00 | 720.00 | 708.00 | 251 | NASDAQ | CHEK | Mon, Apr 4, 2016 | 720.00 | 720.00 | 720.00 | 720.00 | 250 | NASDAQ | CHEK | Fri, Apr 1, 2016 | 660.02 | 660.02 | 660.02 | 660.02 | 249 | NASDAQ | CHEK | Thu, Mar 31, 2016 | 678.00 | 678.00 | 660.00 | 626.88 | 248 | NASDAQ | CHEK | Wed, Mar 30, 2016 | 626.88 | 626.88 | 626.88 | 626.88 | 247 | NASDAQ | CHEK | Tue, Mar 29, 2016 | 720.00 | 720.00 | 715.20 | 720.00 | 246 | NASDAQ | CHEK | Mon, Mar 28, 2016 | 684.00 | 696.00 | 684.00 | 696.00 | 245 | NASDAQ | CHEK | Thu, Mar 24, 2016 | 674.40 | 674.40 | 674.40 | 674.40 | 244 | NASDAQ | CHEK | Wed, Mar 23, 2016 | 674.40 | 674.40 | 674.40 | 674.40 | 243 | NASDAQ | CHEK | Tue, Mar 22, 2016 | 684.00 | 684.00 | 674.40 | 674.40 | 242 | NASDAQ | CHEK | Mon, Mar 21, 2016 | 756.00 | 756.00 | 696.00 | 696.00 | 241 | NASDAQ | CHEK | Fri, Mar 18, 2016 | 736.78 | 736.78 | 707.98 | 724.80 | 240 | NASDAQ | CHEK | Thu, Mar 17, 2016 | 784.80 | 784.80 | 714.96 | 720.00 | 239 | NASDAQ | CHEK | Tue, Mar 15, 2016 | 756.00 | 756.00 | 756.00 | 748.80 | 238 | NASDAQ | CHEK | Mon, Mar 14, 2016 | 710.40 | 749.23 | 710.40 | 749.23 | 237 | NASDAQ | CHEK | Fri, Mar 11, 2016 | 718.22 | 718.22 | 718.22 | 720.00 | 236 | NASDAQ | CHEK | Thu, Mar 10, 2016 | 736.80 | 751.18 | 718.22 | 718.22 | 235 | NASDAQ | CHEK | Wed, Mar 9, 2016 | 739.01 | 791.98 | 739.01 | 616.80 | 234 | NASDAQ | CHEK | Tue, Mar 8, 2016 | 804.00 | 804.00 | 759.43 | 777.60 | 233 | NASDAQ | CHEK | Mon, Mar 7, 2016 | 722.64 | 791.98 | 722.64 | 791.98 | 232 | NASDAQ | CHEK | Fri, Mar 4, 2016 | 767.98 | 767.98 | 767.98 | 761.47 | 231 | NASDAQ | CHEK | Thu, Mar 3, 2016 | 758.40 | 758.40 | 758.40 | 767.98 | 230 | NASDAQ | CHEK | Wed, Mar 2, 2016 | 751.20 | 751.20 | 751.20 | 758.40 | 229 | NASDAQ | CHEK | Tue, Mar 1, 2016 | 768.00 | 768.00 | 768.00 | 751.20 | 228 | NASDAQ | CHEK | Mon, Feb 29, 2016 | 792.00 | 792.00 | 765.60 | 792.00 | 227 | NASDAQ | CHEK | Fri, Feb 26, 2016 | 811.27 | 811.27 | 804.24 | 792.00 | 226 | NASDAQ | CHEK | Thu, Feb 25, 2016 | 892.80 | 892.80 | 768.00 | 768.00 | 225 | NASDAQ | CHEK | Wed, Feb 24, 2016 | 789.60 | 805.03 | 768.00 | 770.40 | 224 | NASDAQ | CHEK | Tue, Feb 23, 2016 | 840.00 | 840.00 | 720.00 | 724.80 | 223 | NASDAQ | CHEK | Mon, Feb 22, 2016 | 660.00 | 715.20 | 660.00 | 696.00 | 222 | NASDAQ | CHEK | Fri, Feb 19, 2016 | 659.98 | 659.98 | 659.98 | 659.98 | 221 | NASDAQ | CHEK | Thu, Feb 18, 2016 | 659.98 | 659.98 | 659.98 | 659.98 | 220 | NASDAQ | CHEK | Wed, Feb 17, 2016 | 643.20 | 660.00 | 643.20 | 659.98 | 219 | NASDAQ | CHEK | Tue, Feb 16, 2016 | 662.40 | 662.40 | 595.20 | 612.00 | 218 | NASDAQ | CHEK | Fri, Feb 12, 2016 | 602.40 | 602.40 | 595.20 | 595.20 | 217 | NASDAQ | CHEK | Thu, Feb 11, 2016 | 537.60 | 590.40 | 537.60 | 590.40 | 216 | NASDAQ | CHEK | Wed, Feb 10, 2016 | 525.60 | 528.00 | 525.60 | 528.00 | 215 | NASDAQ | CHEK | Tue, Feb 9, 2016 | 528.00 | 528.00 | 525.60 | 528.00 | 214 | NASDAQ | CHEK | Mon, Feb 8, 2016 | 518.88 | 518.88 | 518.88 | 518.88 | 213 | NASDAQ | CHEK | Fri, Feb 5, 2016 | 516.00 | 544.80 | 499.20 | 544.80 | 212 | NASDAQ | CHEK | Thu, Feb 4, 2016 | 480.00 | 510.96 | 480.00 | 492.12 | 211 | NASDAQ | CHEK | Wed, Feb 3, 2016 | 504.00 | 528.00 | 501.60 | 528.00 | 210 | NASDAQ | CHEK | Tue, Feb 2, 2016 | 480.00 | 503.04 | 480.00 | 499.20 | 209 | NASDAQ | CHEK | Mon, Feb 1, 2016 | 489.60 | 492.00 | 480.00 | 492.00 | 208 | NASDAQ | CHEK | Fri, Jan 29, 2016 | 456.00 | 492.00 | 453.60 | 492.00 | 207 | NASDAQ | CHEK | Thu, Jan 28, 2016 | 477.60 | 477.60 | 460.75 | 468.00 | 206 | NASDAQ | CHEK | Wed, Jan 27, 2016 | 480.00 | 480.02 | 477.36 | 480.00 | 205 | NASDAQ | CHEK | Tue, Jan 26, 2016 | 458.42 | 509.04 | 458.42 | 509.04 | 204 | NASDAQ | CHEK | Mon, Jan 25, 2016 | 501.60 | 501.60 | 501.60 | 501.60 | 203 | NASDAQ | CHEK | Fri, Jan 22, 2016 | 501.60 | 501.60 | 501.60 | 501.60 | 202 | NASDAQ | CHEK | Thu, Jan 21, 2016 | 499.49 | 516.00 | 499.49 | 501.60 | 201 | NASDAQ | CHEK | Wed, Jan 20, 2016 | 489.96 | 513.60 | 489.96 | 505.20 | 200 | NASDAQ | CHEK | Tue, Jan 19, 2016 | 480.00 | 489.60 | 480.00 | 489.60 | 199 | NASDAQ | CHEK | Fri, Jan 15, 2016 | 461.50 | 496.80 | 451.20 | 463.20 | 198 | NASDAQ | CHEK | Thu, Jan 14, 2016 | 472.82 | 480.00 | 472.80 | 477.58 | 197 | NASDAQ | CHEK | Wed, Jan 13, 2016 | 451.22 | 477.58 | 451.22 | 464.42 | 196 | NASDAQ | CHEK | Tue, Jan 12, 2016 | 477.60 | 477.60 | 477.60 | 477.60 | 195 | NASDAQ | CHEK | Mon, Jan 11, 2016 | 473.38 | 477.60 | 473.38 | 477.60 | 194 | NASDAQ | CHEK | Fri, Jan 8, 2016 | 451.20 | 479.98 | 451.20 | 479.98 | 193 | NASDAQ | CHEK | Thu, Jan 7, 2016 | 479.98 | 479.98 | 447.41 | 475.20 | 192 | NASDAQ | CHEK | Wed, Jan 6, 2016 | 482.40 | 482.40 | 482.40 | 482.40 | 191 | NASDAQ | CHEK | Tue, Jan 5, 2016 | 482.40 | 482.40 | 482.40 | 482.40 | 190 | NASDAQ | CHEK | Mon, Jan 4, 2016 | 516.00 | 516.00 | 482.40 | 482.40 | 189 | NASDAQ | CHEK | Thu, Dec 31, 2015 | 458.40 | 458.40 | 444.00 | 453.60 | 188 | NASDAQ | CHEK | Wed, Dec 30, 2015 | 460.80 | 460.82 | 460.80 | 460.80 | 187 | NASDAQ | CHEK | Tue, Dec 29, 2015 | 460.80 | 465.60 | 460.80 | 465.60 | 186 | NASDAQ | CHEK | Mon, Dec 28, 2015 | 468.00 | 474.91 | 468.00 | 474.91 | 185 | NASDAQ | CHEK | Thu, Dec 24, 2015 | 460.80 | 475.20 | 458.40 | 458.40 | 184 | NASDAQ | CHEK | Wed, Dec 23, 2015 | 470.42 | 487.18 | 470.40 | 480.00 | 183 | NASDAQ | CHEK | Tue, Dec 22, 2015 | 477.60 | 477.60 | 475.20 | 475.20 | 182 | NASDAQ | CHEK | Mon, Dec 21, 2015 | 504.00 | 504.00 | 491.98 | 491.98 | 181 | NASDAQ | CHEK | Fri, Dec 18, 2015 | 465.60 | 505.18 | 432.00 | 505.18 | 180 | NASDAQ | CHEK | Thu, Dec 17, 2015 | 468.96 | 468.96 | 468.96 | 468.96 | 179 | NASDAQ | CHEK | Wed, Dec 16, 2015 | 470.40 | 470.40 | 463.20 | 468.96 | 178 | NASDAQ | CHEK | Tue, Dec 15, 2015 | 516.00 | 516.00 | 465.86 | 465.86 | 177 | NASDAQ | CHEK | Mon, Dec 14, 2015 | 516.00 | 516.00 | 470.40 | 470.40 | 176 | NASDAQ | CHEK | Fri, Dec 11, 2015 | 504.00 | 508.78 | 487.20 | 487.20 | 175 | NASDAQ | CHEK | Thu, Dec 10, 2015 | 499.20 | 499.20 | 480.00 | 480.00 | 174 | NASDAQ | CHEK | Wed, Dec 9, 2015 | 499.20 | 503.04 | 499.20 | 499.20 | 173 | NASDAQ | CHEK | Tue, Dec 8, 2015 | 520.80 | 523.20 | 499.20 | 499.20 | 172 | NASDAQ | CHEK | Fri, Dec 4, 2015 | 514.06 | 514.06 | 506.88 | 506.88 | 171 | NASDAQ | CHEK | Thu, Dec 3, 2015 | 499.20 | 513.60 | 499.20 | 513.60 | 170 | NASDAQ | CHEK | Wed, Dec 2, 2015 | 516.00 | 516.00 | 516.00 | 516.00 | 169 | NASDAQ | CHEK | Tue, Dec 1, 2015 | 501.60 | 513.60 | 494.40 | 513.58 | 168 | NASDAQ | CHEK | Mon, Nov 30, 2015 | 528.00 | 528.00 | 501.60 | 501.60 | 167 | NASDAQ | CHEK | Wed, Nov 25, 2015 | 516.00 | 516.00 | 504.00 | 508.80 | 166 | NASDAQ | CHEK | Tue, Nov 24, 2015 | 573.36 | 573.36 | 528.00 | 528.00 | 165 | NASDAQ | CHEK | Mon, Nov 23, 2015 | 592.80 | 592.80 | 552.00 | 552.00 | 164 | NASDAQ | CHEK | Fri, Nov 20, 2015 | 592.80 | 592.80 | 592.80 | 592.80 | 163 | NASDAQ | CHEK | Wed, Nov 18, 2015 | 595.58 | 626.40 | 595.58 | 600.00 | 162 | NASDAQ | CHEK | Mon, Nov 16, 2015 | 636.00 | 643.18 | 631.20 | 643.18 | 161 | NASDAQ | CHEK | Fri, Nov 13, 2015 | 600.02 | 642.19 | 600.00 | 600.00 | 160 | NASDAQ | CHEK | Thu, Nov 12, 2015 | 600.00 | 602.40 | 599.88 | 599.88 | 159 | NASDAQ | CHEK | Wed, Nov 11, 2015 | 674.28 | 674.28 | 600.02 | 613.92 | 158 | NASDAQ | CHEK | Tue, Nov 10, 2015 | 664.80 | 664.80 | 624.00 | 624.00 | 157 | NASDAQ | CHEK | Mon, Nov 9, 2015 | 691.20 | 691.20 | 691.20 | 691.20 | 156 | NASDAQ | CHEK | Fri, Nov 6, 2015 | 683.76 | 686.40 | 672.02 | 686.40 | 155 | NASDAQ | CHEK | Thu, Nov 5, 2015 | 674.11 | 674.11 | 674.11 | 674.11 | 154 | NASDAQ | CHEK | Wed, Nov 4, 2015 | 693.60 | 693.60 | 660.00 | 671.98 | 153 | NASDAQ | CHEK | Tue, Nov 3, 2015 | 696.00 | 698.40 | 679.99 | 679.99 | 152 | NASDAQ | CHEK | Mon, Nov 2, 2015 | 702.48 | 702.48 | 670.90 | 670.90 | 151 | NASDAQ | CHEK | Fri, Oct 30, 2015 | 705.60 | 705.60 | 667.22 | 667.22 | 150 | NASDAQ | CHEK | Thu, Oct 29, 2015 | 680.16 | 708.00 | 674.40 | 708.00 | 149 | NASDAQ | CHEK | Wed, Oct 28, 2015 | 708.00 | 708.00 | 708.00 | 708.00 | 148 | NASDAQ | CHEK | Tue, Oct 27, 2015 | 672.02 | 682.80 | 672.02 | 679.22 | 147 | NASDAQ | CHEK | Mon, Oct 26, 2015 | 686.40 | 717.60 | 686.40 | 693.60 | 146 | NASDAQ | CHEK | Fri, Oct 23, 2015 | 660.00 | 717.58 | 660.00 | 688.80 | 145 | NASDAQ | CHEK | Thu, Oct 22, 2015 | 720.00 | 720.00 | 698.40 | 698.40 | 144 | NASDAQ | CHEK | Wed, Oct 21, 2015 | 720.00 | 720.00 | 720.00 | 720.00 | 143 | NASDAQ | CHEK | Tue, Oct 20, 2015 | 792.00 | 792.00 | 720.00 | 720.00 | 142 | NASDAQ | CHEK | Mon, Oct 19, 2015 | 744.00 | 756.00 | 739.20 | 739.20 | 141 | NASDAQ | CHEK | Fri, Oct 16, 2015 | 767.98 | 767.98 | 744.00 | 744.00 | 140 | NASDAQ | CHEK | Thu, Oct 15, 2015 | 768.00 | 784.78 | 745.20 | 745.20 | 139 | NASDAQ | CHEK | Wed, Oct 14, 2015 | 760.80 | 770.40 | 760.80 | 765.34 | 138 | NASDAQ | CHEK | Tue, Oct 13, 2015 | 732.00 | 791.62 | 732.00 | 756.00 | 137 | NASDAQ | CHEK | Mon, Oct 12, 2015 | 912.00 | 912.00 | 772.80 | 803.04 | 136 | NASDAQ | CHEK | Fri, Oct 9, 2015 | 640.80 | 837.60 | 640.80 | 763.18 | 135 | NASDAQ | CHEK | Thu, Oct 8, 2015 | 595.20 | 595.20 | 588.00 | 588.00 | 134 | NASDAQ | CHEK | Wed, Oct 7, 2015 | 638.18 | 638.18 | 638.18 | 638.18 | 133 | NASDAQ | CHEK | Tue, Oct 6, 2015 | 580.82 | 580.82 | 580.82 | 580.82 | 132 | NASDAQ | CHEK | Fri, Oct 2, 2015 | 628.61 | 628.61 | 594.24 | 604.80 | 131 | NASDAQ | CHEK | Thu, Oct 1, 2015 | 669.60 | 669.60 | 660.00 | 660.00 | 130 | NASDAQ | CHEK | Wed, Sep 30, 2015 | 600.00 | 669.60 | 588.00 | 669.60 | 129 | NASDAQ | CHEK | Tue, Sep 29, 2015 | 580.80 | 580.80 | 580.80 | 580.80 | 128 | NASDAQ | CHEK | Mon, Sep 28, 2015 | 672.96 | 734.40 | 660.00 | 727.20 | 127 | NASDAQ | CHEK | Fri, Sep 25, 2015 | 513.67 | 722.40 | 513.67 | 691.20 | 126 | NASDAQ | CHEK | Wed, Sep 23, 2015 | 676.80 | 741.60 | 676.80 | 705.60 | 125 | NASDAQ | CHEK | Tue, Sep 22, 2015 | 672.02 | 672.02 | 672.02 | 672.02 | 124 | NASDAQ | CHEK | Mon, Sep 21, 2015 | 636.00 | 636.00 | 636.00 | 636.00 | 123 | NASDAQ | CHEK | Fri, Sep 18, 2015 | 640.80 | 672.00 | 624.00 | 624.00 | 122 | NASDAQ | CHEK | Thu, Sep 17, 2015 | 616.80 | 621.60 | 597.60 | 621.60 | 121 | NASDAQ | CHEK | Wed, Sep 16, 2015 | 624.00 | 624.00 | 600.00 | 614.40 | 120 | NASDAQ | CHEK | Tue, Sep 15, 2015 | 636.00 | 643.20 | 604.80 | 612.02 | 119 | NASDAQ | CHEK | Mon, Sep 14, 2015 | 624.00 | 624.00 | 624.00 | 624.00 | 118 | NASDAQ | CHEK | Fri, Sep 11, 2015 | 708.00 | 708.00 | 622.80 | 648.00 | 117 | NASDAQ | CHEK | Thu, Sep 10, 2015 | 621.60 | 645.60 | 612.00 | 640.80 | 116 | NASDAQ | CHEK | Wed, Sep 9, 2015 | 612.00 | 825.60 | 609.60 | 666.50 | 115 | NASDAQ | CHEK | Tue, Sep 8, 2015 | 600.00 | 671.98 | 597.60 | 626.40 | 114 | NASDAQ | CHEK | Fri, Sep 4, 2015 | 604.82 | 609.60 | 604.82 | 609.60 | 113 | NASDAQ | CHEK | Thu, Sep 3, 2015 | 561.60 | 600.00 | 554.42 | 600.00 | 112 | NASDAQ | CHEK | Wed, Sep 2, 2015 | 504.00 | 588.00 | 504.00 | 583.20 | 111 | NASDAQ | CHEK | Tue, Sep 1, 2015 | 518.40 | 544.80 | 494.40 | 518.40 | 110 | NASDAQ | CHEK | Mon, Aug 31, 2015 | 540.00 | 540.00 | 506.42 | 523.20 | 109 | NASDAQ | CHEK | Fri, Aug 28, 2015 | 504.00 | 527.98 | 504.00 | 504.00 | 108 | NASDAQ | CHEK | Thu, Aug 27, 2015 | 525.60 | 528.00 | 487.20 | 504.00 | 107 | NASDAQ | CHEK | Wed, Aug 26, 2015 | 633.60 | 636.00 | 436.80 | 487.20 | 106 | NASDAQ | CHEK | Tue, Aug 25, 2015 | 722.40 | 722.40 | 614.40 | 631.20 | 105 | NASDAQ | CHEK | Mon, Aug 24, 2015 | 758.40 | 758.40 | 720.00 | 722.40 | 104 | NASDAQ | CHEK | Fri, Aug 21, 2015 | 720.02 | 758.40 | 720.02 | 758.40 | 103 | NASDAQ | CHEK | Wed, Aug 19, 2015 | 722.40 | 722.40 | 693.60 | 717.60 | 102 | NASDAQ | CHEK | Tue, Aug 18, 2015 | 780.00 | 782.40 | 746.40 | 758.28 | 101 | NASDAQ | CHEK | Mon, Aug 17, 2015 | 790.46 | 802.58 | 790.46 | 792.00 | 100 | NASDAQ | CHEK | Fri, Aug 14, 2015 | 816.00 | 816.00 | 799.20 | 816.00 | 99 | NASDAQ | CHEK | Thu, Aug 13, 2015 | 837.60 | 840.00 | 770.40 | 825.10 | 98 | NASDAQ | CHEK | Wed, Aug 12, 2015 | 837.60 | 837.60 | 828.00 | 828.00 | 97 | NASDAQ | CHEK | Mon, Aug 10, 2015 | 859.20 | 864.00 | 775.20 | 811.20 | 96 | NASDAQ | CHEK | Thu, Aug 6, 2015 | 931.18 | 931.18 | 840.00 | 840.00 | 95 | NASDAQ | CHEK | Wed, Aug 5, 2015 | 883.20 | 883.20 | 840.00 | 840.00 | 94 | NASDAQ | CHEK | Tue, Aug 4, 2015 | 864.00 | 864.00 | 854.40 | 854.40 | 93 | NASDAQ | CHEK | Mon, Aug 3, 2015 | 883.20 | 888.00 | 883.20 | 888.00 | 92 | NASDAQ | CHEK | Fri, Jul 31, 2015 | 849.60 | 914.40 | 758.40 | 854.40 | 91 | NASDAQ | CHEK | Thu, Jul 30, 2015 | 931.20 | 931.20 | 780.00 | 780.00 | 90 | NASDAQ | CHEK | Wed, Jul 29, 2015 | 936.00 | 1000.80 | 820.80 | 931.20 | 89 | NASDAQ | CHEK | Tue, Jul 28, 2015 | 840.00 | 863.98 | 820.80 | 863.98 | 88 | NASDAQ | CHEK | Mon, Jul 27, 2015 | 914.40 | 914.40 | 840.00 | 852.00 | 87 | NASDAQ | CHEK | Fri, Jul 24, 2015 | 957.60 | 957.60 | 950.40 | 950.42 | 86 | NASDAQ | CHEK | Thu, Jul 23, 2015 | 979.97 | 979.97 | 950.40 | 950.42 | 85 | NASDAQ | CHEK | Wed, Jul 22, 2015 | 948.00 | 983.98 | 948.00 | 979.20 | 84 | NASDAQ | CHEK | Tue, Jul 21, 2015 | 897.60 | 936.00 | 897.60 | 931.92 | 83 | NASDAQ | CHEK | Mon, Jul 20, 2015 | 916.80 | 916.80 | 914.40 | 914.40 | 82 | NASDAQ | CHEK | Fri, Jul 17, 2015 | 921.60 | 924.00 | 921.60 | 924.00 | 81 | NASDAQ | CHEK | Thu, Jul 16, 2015 | 892.80 | 921.60 | 892.80 | 919.58 | 80 | NASDAQ | CHEK | Wed, Jul 15, 2015 | 883.20 | 888.00 | 880.80 | 880.80 | 79 | NASDAQ | CHEK | Tue, Jul 14, 2015 | 883.20 | 892.80 | 883.20 | 892.80 | 78 | NASDAQ | CHEK | Mon, Jul 13, 2015 | 948.00 | 948.00 | 888.00 | 890.40 | 77 | NASDAQ | CHEK | Fri, Jul 10, 2015 | 876.00 | 943.20 | 876.00 | 926.40 | 76 | NASDAQ | CHEK | Thu, Jul 9, 2015 | 900.00 | 900.00 | 866.42 | 873.60 | 75 | NASDAQ | CHEK | Wed, Jul 8, 2015 | 892.80 | 892.80 | 852.00 | 873.60 | 74 | NASDAQ | CHEK | Tue, Jul 7, 2015 | 907.20 | 907.20 | 852.00 | 852.00 | 73 | NASDAQ | CHEK | Mon, Jul 6, 2015 | 931.20 | 960.00 | 860.93 | 888.00 | 72 | NASDAQ | CHEK | Thu, Jul 2, 2015 | 959.98 | 959.98 | 912.00 | 914.40 | 71 | NASDAQ | CHEK | Wed, Jul 1, 2015 | 852.00 | 1017.58 | 852.00 | 916.80 | 70 | NASDAQ | CHEK | Tue, Jun 30, 2015 | 588.00 | 904.80 | 588.00 | 840.00 | 69 | NASDAQ | CHEK | Mon, Jun 29, 2015 | 650.40 | 686.40 | 628.80 | 652.80 | 68 | NASDAQ | CHEK | Fri, Jun 26, 2015 | 650.40 | 700.80 | 650.40 | 652.80 | 67 | NASDAQ | CHEK | Thu, Jun 25, 2015 | 720.02 | 758.64 | 662.40 | 672.00 | 66 | NASDAQ | CHEK | Wed, Jun 24, 2015 | 720.00 | 727.20 | 720.00 | 727.20 | 65 | NASDAQ | CHEK | Tue, Jun 23, 2015 | 796.80 | 734.40 | 732.00 | 732.00 | 64 | NASDAQ | CHEK | Mon, Jun 22, 2015 | 741.60 | 794.40 | 741.60 | 748.80 | 63 | NASDAQ | CHEK | Fri, Jun 19, 2015 | 806.40 | 806.40 | 720.02 | 740.74 | 62 | NASDAQ | CHEK | Thu, Jun 18, 2015 | 746.40 | 782.16 | 746.40 | 782.16 | 61 | NASDAQ | CHEK | Wed, Jun 17, 2015 | 792.00 | 792.00 | 720.24 | 720.24 | 60 | NASDAQ | CHEK | Tue, Jun 16, 2015 | 702.96 | 820.80 | 702.96 | 780.00 | 59 | NASDAQ | CHEK | Mon, Jun 15, 2015 | 822.05 | 830.40 | 792.00 | 828.00 | 58 | NASDAQ | CHEK | Fri, Jun 12, 2015 | 885.60 | 912.00 | 876.00 | 880.80 | 57 | NASDAQ | CHEK | Thu, Jun 11, 2015 | 996.00 | 1039.20 | 909.60 | 914.40 | 56 | NASDAQ | CHEK | Wed, Jun 10, 2015 | 1020.00 | 1056.00 | 964.80 | 986.40 | 55 | NASDAQ | CHEK | Tue, Jun 9, 2015 | 1036.80 | 1140.00 | 996.00 | 1032.00 | 54 | NASDAQ | CHEK | Mon, Jun 8, 2015 | 1036.80 | 1099.20 | 1000.82 | 1015.20 | 53 | NASDAQ | CHEK | Fri, Jun 5, 2015 | 1020.00 | 1049.16 | 1020.00 | 1020.00 | 52 | NASDAQ | CHEK | Thu, Jun 4, 2015 | 1096.80 | 1099.20 | 1034.40 | 1065.60 | 51 | NASDAQ | CHEK | Wed, Jun 3, 2015 | 1000.80 | 1120.80 | 984.00 | 1044.00 | 50 | NASDAQ | CHEK | Tue, Jun 2, 2015 | 979.20 | 1029.60 | 960.00 | 1010.40 | 49 | NASDAQ | CHEK | Mon, Jun 1, 2015 | 1005.60 | 1010.40 | 984.00 | 1003.20 | 48 | NASDAQ | CHEK | Fri, May 29, 2015 | 1060.80 | 1033.56 | 1017.62 | 1032.00 | 47 | NASDAQ | CHEK | Thu, May 28, 2015 | 1032.00 | 1032.00 | 1032.00 | 1032.00 | 46 | NASDAQ | CHEK | Wed, May 27, 2015 | 1099.20 | 1195.20 | 1008.00 | 1046.40 | 45 | NASDAQ | CHEK | Tue, May 26, 2015 | 1075.20 | 1075.20 | 1075.20 | 1075.20 | 44 | NASDAQ | CHEK | Fri, May 22, 2015 | 1092.00 | 1092.00 | 991.20 | 1036.80 | 43 | NASDAQ | CHEK | Thu, May 21, 2015 | 1080.00 | 1140.00 | 1075.20 | 1075.20 | 42 | NASDAQ | CHEK | Wed, May 20, 2015 | 1020.00 | 1171.08 | 941.57 | 1056.00 | 41 | NASDAQ | CHEK | Tue, May 19, 2015 | 1075.20 | 1080.00 | 909.60 | 1012.80 | 40 | NASDAQ | CHEK | Mon, May 18, 2015 | 1075.20 | 1113.48 | 1056.00 | 1096.80 | 39 | NASDAQ | CHEK | Fri, May 15, 2015 | 1070.40 | 1087.20 | 1070.40 | 1084.80 | 38 | NASDAQ | CHEK | Thu, May 14, 2015 | 1056.02 | 1116.00 | 1056.00 | 1116.00 | 37 | NASDAQ | CHEK | Tue, May 12, 2015 | 1140.00 | 1140.00 | 1056.00 | 1056.00 | 36 | NASDAQ | CHEK | Mon, May 11, 2015 | 1108.80 | 1132.80 | 1108.80 | 1132.80 | 35 | NASDAQ | CHEK | Thu, May 7, 2015 | 1132.70 | 1139.98 | 1104.02 | 1104.02 | 34 | NASDAQ | CHEK | Tue, May 5, 2015 | 1219.20 | 1219.20 | 1065.60 | 1108.80 | 33 | NASDAQ | CHEK | Mon, May 4, 2015 | 1195.20 | 1185.60 | 1096.82 | 1185.60 | 32 | NASDAQ | CHEK | Fri, May 1, 2015 | 1233.60 | 1233.60 | 1113.60 | 1113.60 | 31 | NASDAQ | CHEK | Thu, Apr 30, 2015 | 1068.00 | 1245.60 | 1048.80 | 1245.60 | 30 | NASDAQ | CHEK | Wed, Apr 29, 2015 | 1192.80 | 1257.60 | 1012.80 | 1149.60 | 29 | NASDAQ | CHEK | Tue, Apr 28, 2015 | 1132.80 | 1197.60 | 1104.00 | 1156.80 | 28 | NASDAQ | CHEK | Mon, Apr 27, 2015 | 1020.00 | 1197.60 | 1009.08 | 1099.80 | 27 | NASDAQ | CHEK | Fri, Apr 24, 2015 | 986.40 | 1017.60 | 986.40 | 1017.60 | 26 | NASDAQ | CHEK | Thu, Apr 23, 2015 | 1038.38 | 1068.00 | 1010.40 | 1010.40 | 25 | NASDAQ | CHEK | Wed, Apr 22, 2015 | 1032.00 | 1058.40 | 1032.00 | 1056.00 | 24 | NASDAQ | CHEK | Tue, Apr 21, 2015 | 1104.00 | 1118.69 | 1096.80 | 1096.80 | 23 | NASDAQ | CHEK | Mon, Apr 20, 2015 | 1224.00 | 1224.00 | 1080.07 | 1159.20 | 22 | NASDAQ | CHEK | Fri, Apr 17, 2015 | 1221.60 | 1227.84 | 1200.00 | 1200.00 | 21 | NASDAQ | CHEK | Thu, Apr 16, 2015 | 1269.60 | 1269.60 | 1221.60 | 1239.46 | 20 | NASDAQ | CHEK | Wed, Apr 15, 2015 | 1240.80 | 1272.00 | 1238.40 | 1269.60 | 19 | NASDAQ | CHEK | Tue, Apr 14, 2015 | 1252.80 | 1293.60 | 1243.20 | 1281.60 | 18 | NASDAQ | CHEK | Mon, Apr 13, 2015 | 1320.00 | 1320.00 | 1221.60 | 1248.00 | 17 | NASDAQ | CHEK | Fri, Apr 10, 2015 | 1272.00 | 1320.00 | 1272.00 | 1315.20 | 16 | NASDAQ | CHEK | Thu, Apr 9, 2015 | 1305.60 | 1296.00 | 1257.60 | 1257.60 | 15 | NASDAQ | CHEK | Wed, Apr 8, 2015 | 1324.80 | 1346.40 | 1308.00 | 1308.00 | 14 | NASDAQ | CHEK | Tue, Apr 7, 2015 | 1324.80 | 1353.60 | 1338.31 | 1338.31 | 13 | NASDAQ | CHEK | Mon, Apr 6, 2015 | 1348.80 | 1377.60 | 1320.00 | 1353.60 | 12 | NASDAQ | CHEK | Thu, Apr 2, 2015 | 1377.60 | 1377.60 | 1304.02 | 1348.80 | 11 | NASDAQ | CHEK | Wed, Apr 1, 2015 | 1416.00 | 1416.00 | 1272.00 | 1284.00 | 10 | NASDAQ | CHEK | Tue, Mar 31, 2015 | 1288.80 | 1341.60 | 1286.40 | 1320.00 | 9 | NASDAQ | CHEK | Mon, Mar 30, 2015 | 1322.40 | 1332.00 | 1296.00 | 1296.00 | 8 | NASDAQ | CHEK | Fri, Mar 27, 2015 | 1344.00 | 1360.80 | 1296.00 | 1329.60 | 7 | NASDAQ | CHEK | Thu, Mar 26, 2015 | 1344.00 | 1368.00 | 1320.00 | 1329.60 | 6 | NASDAQ | CHEK | Wed, Mar 25, 2015 | 1348.80 | 1368.00 | 1344.00 | 1368.00 | 5 | NASDAQ | CHEK | Tue, Mar 24, 2015 | 1358.40 | 1392.00 | 1356.00 | 1382.40 | 4 | NASDAQ | CHEK | Mon, Mar 23, 2015 | 1372.80 | 1404.00 | 1368.00 | 1368.00 | 3 | NASDAQ | CHEK | Fri, Mar 20, 2015 | 1368.00 | 1425.60 | 1368.00 | 1411.20 | 2 | NASDAQ | CHEK | Thu, Mar 19, 2015 | 1380.00 | 1427.98 | 1368.00 | 1392.02 | 1 | NASDAQ | CHEK | Wed, Mar 18, 2015 | 1380.00 | 1512.00 | 1344.00 | 1382.40 |
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# | Exchange | Symbol | Date | Open | High | Low | Close |
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