854 institutions reported holding $37.92B of MKS INC. (MKSI) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($3.25B), BlackRock, Inc. ($3.18B), Invesco Ltd. ($2.08B), JPMORGAN CHASE & CO ($1.45B), STATE STREET CORP ($1.06B). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30