159 institutions reported holding $871.6M of PROSHARES (UPRO) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($340.6M), CITADEL ADVISORS LLC ($140.0M), JANE STREET GROUP, LLC ($100.8M), Revere Asset Management, Inc ($55.8M), HRT FINANCIAL LP ($41.4M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30