17 institutions reported holding $21.1M of ProShares UltraShort Bitcoin ETF (SBIT) in SEC 13F filings for 2026-06-30. Largest institutional holders: CITADEL ADVISORS LLC ($7.1M), JANE STREET GROUP, LLC ($5.4M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($3.1M), FLOW TRADERS U.S. LLC ($982,000), Belvedere Trading LLC ($933,042). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $7.1M | 102,682 | Trimmed |
| 2 | JANE STREET GROUP, LLC | $5.4M | 78,006 | Added |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3.1M | 44,405 | Trimmed |
| 4 | FLOW TRADERS U.S. LLC | $982,000 | 14,109 | Added |
| 5 | Belvedere Trading LLC | $933,042 | 13,400 | Trimmed |
| 6 | Jump Financial, LLC | $812,512 | 11,669 | New |
| 7 | SIMPLEX TRADING, LLC | $544,367 | 7,818 | Trimmed |
| 8 | Scientech Research LLC | $516,167 | 7,413 | New |
| 9 | Prosperitas Financial LLC | $480,447 | 6,900 | New |
| 10 | StoneX Group Inc. | $275,541 | 6,278 | Trimmed |
| 11 | GROUP ONE TRADING LLC | $223,095 | 3,204 | Trimmed |
| 12 | CCG WEALTH MANAGEMENT, LLC | $222,816 | 3,200 | New |
| 13 | IMC-Chicago, LLC | $204,086 | 2,931 | Trimmed |
| 14 | Tower Research Capital LLC (TRC) | $180,411 | 2,591 | Added |
| 15 | UBS Group AG | $20,750 | 298 | Hold |
| 16 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 17 | Global Retirement Partners, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30