Biogen Inc. Share Price
NASDAQ: BIIB | Large CapBiogen Inc. Stock Performance
Biogen Inc. Share Price Today
As of 30 October 2026, Biogen Inc.'s share price is $249.82. The stock opened at $247.92, compared to its previous close of $243.86. During today's trading session, Biogen Inc.'s share price traded between $246.48 and $255.44, with an average price of $250.96. Over the past 52 weeks, the stock has recorded a high of $258.78 and a low of $138.13. In terms of performance, Biogen Inc.'s share price has risen by 31.90% over the last six months and is up 61.76% on a year-on-year basis.
Biogen Inc. Share Price Chart
Biogen Inc. Quarterly Profit & Loss
All figures in USD
Biogen Inc. Annual Profit & Loss
All figures in USD
About Biogen Inc.
Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).
Biogen Inc. Historical Returns
| Month | Open | Close | Change % |
|---|---|---|---|
Oct 2026 | $224.96 | $249.85 | +10.48% |
Sep 2026 | $218.11 | $226.14 | +2.10% |
Aug 2026 | $202.63 | $221.49 | +9.17% |
Jul 2026 | $215.13 | $202.89 | -6.07% |
Jun 2026 | $192.64 | $216.00 | +10.13% |
May 2026 | $187.60 | $196.13 | +3.55% |
Apr 2026 | $183.49 | $189.40 | +3.29% |
Mar 2026 | $190.23 | $183.37 | -4.34% |
Feb 2026 | $179.69 | $191.69 | +6.54% |
Jan 2026 | $174.93 | $179.91 | +2.28% |
Dec 2025 | $181.06 | $175.90 | -3.38% |
Nov 2025 | $153.99 | $182.06 | +17.88% |