22 institutions reported holding $9.6M of DEFIANCE DAILY TARGET 2X LONG OKLO ETF (OKLL) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($2.9M), JANE STREET GROUP, LLC ($1.4M), CITADEL ADVISORS LLC ($1.3M), StoneX Group Inc. ($1.2M), Optiver Holding B.V. ($915,489). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2.9M | 592,516 | Added |
| 2 | JANE STREET GROUP, LLC | $1.4M | 277,600 | Added |
| 3 | CITADEL ADVISORS LLC | $1.3M | 265,400 | Trimmed |
| 4 | StoneX Group Inc. | $1.2M | 142,892 | New |
| 5 | Optiver Holding B.V. | $915,489 | 186,454 | Added |
| 6 | CITIGROUP INC | $465,213 | 94,748 | New |
| 7 | HRT FINANCIAL LP | $436,000 | 88,950 | Added |
| 8 | XTX Topco Ltd | $253,420 | 51,613 | Trimmed |
| 9 | Jump Financial, LLC | $205,965 | 41,948 | Added |
| 10 | IMC-Chicago, LLC | $124,046 | 25,264 | New |
| 11 | GOLDMAN SACHS GROUP INC | $108,678 | 22,134 | New |
| 12 | MERCER GLOBAL ADVISORS INC /ADV | $85,434 | 17,400 | New |
| 13 | Belvedere Trading LLC | $78,432 | 15,974 | Trimmed |
| 14 | UBS Group AG | $38,475 | 7,836 | Trimmed |
| 15 | GROUP ONE TRADING LLC | $22,542 | 4,591 | New |
| 16 | SIMPLEX TRADING, LLC | $13,325 | 2,714 | New |
| 17 | HOLLENCREST CAPITAL MANAGEMENT | $123 | 25 | New |
| 18 | TWO SIGMA SECURITIES, LLC | $0 | 0 | Exited |
| 19 | Tower Research Capital LLC (TRC) | $0 | 0 | Exited |
| 20 | Garden State Investment Advisory Services LLC | $0 | 0 | Exited |
| 21 | Scientech Research LLC | $0 | 0 | Exited |
| 22 | Advisory Services Network, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30