Biogen Inc. (BIIB)
NASDAQ · Manufacturing · Biological products, (no diagnostic substances)
BIIB price, last 12 months
Key stats
- Previous close
- $226.36
- Open
- $228.27
- Day range
- $223.76 – $228.92
- 52-week range
- $135.39 – $229.19
- Volume
- 958K
- Avg volume (20 days)
- 936.8K
- Market cap
- $33.6B
Performance
Technicals and fundamentals
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).
- Sector
- Manufacturing
- Industry
- Biological products, (no diagnostic substances)
- Listed on
- NASDAQ
- Market cap
- $33.6B