970 institutions reported holding $8.51B of SELECT SECTOR SPDR TR (XLB) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($755.5M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($544.8M), BANK OF AMERICA CORP /DE/ ($487.5M), BANK OF MONTREAL /CAN/ ($462.3M), MORGAN STANLEY ($357.3M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-03-31