472 institutions reported holding $9.54B of ALKERMES PLC (ALKS) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($1.53B), VANGUARD GROUP INC ($966.4M), BAKER BROS. ADVISORS LP ($524.6M), STATE STREET CORP ($480.0M), PRICE T ROWE ASSOCIATES INC /MD/ ($353.0M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30