4,921 institutions reported holding $1.61T of STATE STR SPDR S&P 500 ETF T (SPY) in SEC 13F filings for 2026-06-30. Largest institutional holders: JANE STREET GROUP, LLC ($203.49B), Optiver Holding B.V. ($121.03B), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($120.14B), 1832 Asset Management L.P. ($112.17B), CTC LLC ($89.41B). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30