BIIB·09062X103·US·equity·Healthcare - Drug Manufacturers - General-13D/G
BIIB (BIOGEN INC) is held by 282 institutional investors as of Q1 2026. Largest holders: BlackRock, Inc. ($2.9B), PRIMECAP MANAGEMENT CO/CA/ ($2.7B), FMR LLC ($2.3B). Net institutional sentiment: Mixed.
See how BIIB's score breaks down across 4 SEC sources
Data sourced from four SEC data sources: 13F, Form 4, 13D/13G, and STOCK Act. Not financial advice. Full disclaimer