598 institutions reported holding $8.98B of COLUMBIA BANKING SYSTEM INC (COLB) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($932.3M), BlackRock, Inc. ($880.4M), T. Rowe Price Investment Management, Inc. ($501.1M), DIMENSIONAL FUND ADVISORS LP ($445.7M), STATE STREET CORP ($406.8M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30