1,393 institutions reported holding $55.37B of GALLAGHER ARTHUR J & CO (AJG) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($7.32B), BlackRock, Inc. ($4.55B), FMR LLC ($4.28B), JPMORGAN CHASE & CO ($3.26B), Capital World Investors ($2.87B). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30