3 institutions reported holding $256,727 of PROSHARES TR (SZK) in SEC 13F filings for 2026-03-31. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($256,695), MORGAN STANLEY ($32), SIMPLEX TRADING, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $256,695 | 22,424 | New |
| 2 | MORGAN STANLEY | $32 | 2 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31