Who Owns PROSHARES TR (MZZ)? -- Institutional Holders (2026-03-31)

3 institutions reported holding $14 of PROSHARES TR (MZZ) in SEC 13F filings for 2026-03-31. Largest institutional holders: MORGAN STANLEY ($14), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($0), Tower Research Capital LLC (TRC) ($0). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1MORGAN STANLEY$141Hold
2SUSQUEHANNA INTERNATIONAL GROUP, LLP$00Exited
3Tower Research Capital LLC (TRC)$00Exited

Source: SEC Form 13F filings · as of 2026-03-31