BIIB

BIOGEN INC

Institutional Ownership · Q4 2025

Filing: Q4 2025

BIOGEN INC (BIIB) is held by 946 institutional investors with combined holdings of $21.3B. Major holders include VANGUARD GROUP INC, BlackRock, Inc. (BLK), PRIMECAP MANAGEMENT CO/CA.

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Institutional Holders

946

Total Value

$21.3B

Ownership %

82.1%

🏦 Top Institutional Holders

BlackRock, Inc. (BLK)

14.8M shares

$2.6B

10.03% ownership

PRIMECAP MANAGEMENT CO/CA/

STATE STREET CORP (STT, STT-PG)

7.2M shares

$1.3B

4.85% ownership

📊 Financials

Income statement, balance sheet, and cash flow from SEC filings.

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