9 institutions reported holding $1.3M of PROSHARES TR (SRS) in SEC 13F filings for 2026-06-30. Largest institutional holders: Virtu Financial LLC ($851,000), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($241,500), Tower Research Capital LLC (TRC) ($240,856), SIMPLEX TRADING, LLC ($9,458), UBS Group AG ($121). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Virtu Financial LLC | $851,000 | 21,146 | New |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $241,500 | 6,000 | Trimmed |
| 3 | Tower Research Capital LLC (TRC) | $240,856 | 5,984 | Added |
| 4 | SIMPLEX TRADING, LLC | $9,458 | 235 | New |
| 5 | UBS Group AG | $121 | 3 | New |
| 6 | MORGAN STANLEY | $75 | 1 | Trimmed |
| 7 | BLAIR WILLIAM & CO/IL | $40 | 1 | Hold |
| 8 | IMC-Chicago, LLC | $0 | 0 | Exited |
| 9 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30