152 institutions reported holding $376.6M of 1ST BUS FINL SVCS INC COM (FBIZ) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($58.6M), VANGUARD GROUP INC ($31.8M), DIMENSIONAL FUND ADVISORS LP ($31.5M), FIRST BUSINESS FINANCIAL SERVICES, INC. ($21.5M), AMERICAN CENTURY COMPANIES INC ($17.2M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30