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Biogen Inc (BIIB) Stock Split History 2025: Ex Dates, Prices, Free Download

BIIB Stock Split History

BIIB's most recent stock split occurred on January 18, 2001. It was a 3-for-1 split.

Summary

Total Stock Splits: 2

Stock Splits Table

Ex Date	Adjustment Factor	Split From	Split To	Split Type
1999-12-21	2	1	2	stock split
2001-01-18	3	1	3	stock split

Stock Splits Chart

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Coins representing dividend payouts and trends

BIIB Dividend History

Discover Biogen Inc's dividend history, including payout trends, ex-dividend dates, historical yields, and payment schedules. Stay updated with detailed insights to optimize your investment strategy.

Benjamin Franklin on a $100 bill representing value division in stock split history

BIIB Stock Split History

Discover Biogen Inc's stock split history, key dates, split ratios, and their impact on share prices, market capitalization, and overall investment growth.

Graph showing historical stock prices and market trends

BIIB Historical Prices

Explore Biogen Inc's historical stock price trends, daily price movements, and market performance to support informed trading and investment decisions.