939 institutions reported holding $23.63B of SPDR SERIES TRUST (XBI) in SEC 13F filings for 2026-03-31. Largest institutional holders: BNP PARIBAS FINANCIAL MARKETS ($2.71B), BANK OF AMERICA CORP /DE/ ($1.85B), GOLDMAN SACHS GROUP INC ($1.81B), MORGAN STANLEY ($1.58B), CITIGROUP INC ($1.38B). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-03-31