7 institutions reported holding $1.8M of Defiance Daily Target 2X Short OKLO ETF (OKLS) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($710,988), HRT FINANCIAL LP ($271,000), Jump Financial, LLC ($269,865), StoneX Group Inc. ($239,720), JANE STREET GROUP, LLC ($204,224). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $710,988 | 29,115 | Trimmed |
| 2 | HRT FINANCIAL LP | $271,000 | 11,111 | New |
| 3 | Jump Financial, LLC | $269,865 | 11,051 | New |
| 4 | StoneX Group Inc. | $239,720 | 12,062 | New |
| 5 | JANE STREET GROUP, LLC | $204,224 | 8,363 | Trimmed |
| 6 | Optiver Holding B.V. | $76,190 | 3,120 | New |
| 7 | Tower Research Capital LLC (TRC) | $2,442 | 100 | Added |
来源：SEC 13F 申报文件 · 截至 2026-06-30