4 institutions reported holding $351,498 of PROSHARES TR (UCYB) in SEC 13F filings for 2026-03-31. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($351,423), MORGAN STANLEY ($75), SIMPLEX TRADING, LLC ($0), JANE STREET GROUP, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $351,423 | 9,012 | New |
| 2 | MORGAN STANLEY | $75 | 1 | New |
| 3 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 4 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31