1,081 institutions reported holding $15.65B of ISHARES TR (IGSB) in SEC 13F filings for 2026-03-31. Largest institutional holders: NORTHERN TRUST CORP ($1.30B), Matson Money. Inc. ($782.6M), BlackRock, Inc. ($669.6M), EP Wealth Advisors, LLC ($616.0M), AMERIPRISE FINANCIAL INC ($550.5M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-03-31