319 institutions reported holding $3.57B of 1ST INTERSTATE BANCSYSTEM (FIBK) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($529.5M), VANGUARD GROUP INC ($383.7M), STATE STREET CORP ($241.0M), DIMENSIONAL FUND ADVISORS LP ($223.0M), First Interstate Bank ($177.9M). Source: SEC Form 13F.
来源:SEC 13F 申报文件 · 截至 2026-06-30