Biogen
Biogen is an American biotech company based in Cambridge, Massachusetts. The company uses recombinant DNA technology, also known as biotechnology. This makes it possible to produce human proteins and therefore medicinal products with the help of microorganisms. The company continues to develop new substances and works on improving already approved molecules.
What If You Bought BIIB Earlier?
Estimate based on split history only. Excludes dividends, fees, taxes, and intraday movement.
Stock Split History
Newest split first. Cumulative multiple = compounded growth from that date to today.
| Split Date | Price Before | Ratio | Split Multiple | Cumulative |
|---|---|---|---|---|
| Jan 18, 2001 | $163.31 | 3-for-1 | 3× | 6× |
| Dec 21, 1999 | $126.50 | 2-for-1 | 2× | 2× |
Biogen Market Cap Timeline
Market capitalization is available from 2004; the sourced public-listing year is 1991, so earlier annual values remain unavailable. Split markers cover all 2 recorded splits. Filled dots have market-cap data for that year; hollow dots mark split years outside market-cap source coverage.