BIOGEN INC. (BIIB)
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).
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Financial summary
- Revenue FY2025
- $9.9B
- Net income
- $1.3B
- Total assets
- $29.4B
- Market cap
- $29.9B
Source: SEC EDGAR · updated Jun 7, 2026
15-minute delayed · data by Polygon.io
Past year · hover for prices
52-week range
- Market cap
- $29.9B
- Shares outstanding
- 118.3M
- Open
- —
- Day range
- –
- Prev close
- —
- Volume
- —
- IPO date
- Sep 17, 1991
Biogen Inc. (BIIB) Stock Price
- Profitable — net income of $1.3B in FY2025.
- Trading near its 52-week high.
Automatically generated from public filings and market data. Informational only — not investment advice or a recommendation to buy or sell any security.
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Biogen Inc.: frequently asked questions
Is Biogen Inc. an American company?
Yes — Biogen Inc. is an American company. Biogen Inc. is incorporated in Delaware, United States and headquartered in Cambridge, Massachusetts. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Biogen Inc. incorporated?
Biogen Inc. is legally incorporated in Delaware, United States, according to its GLEIF legal-entity record.
Who owns Biogen Inc.?
Biogen Inc. reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Biogen Inc. traded on a US stock exchange?
Yes — Biogen Inc. trades under the ticker BIIB on the NASDAQ.
Where is Biogen Inc. headquartered?
Biogen Inc. is headquartered in Cambridge, Massachusetts, United States.
Is Biogen Inc. publicly traded?
Yes — Biogen Inc. is a publicly traded company. Its stock trades under the ticker symbol BIIB on the NASDAQ.
What does Biogen Inc. do?
Biogen Inc. is an American Pharmaceuticals company in the Health & Beauty sector.
When was Biogen Inc. founded?
Biogen Inc. was founded in 1978.
