275 institutions reported holding $1.42B of GIBRALTAR INDS INC (ROCK) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($221.9M), FMR LLC ($200.7M), VANGUARD GROUP INC ($129.4M), ALLIANCEBERNSTEIN L.P. ($89.0M), DIMENSIONAL FUND ADVISORS LP ($67.6M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30