16 institutions reported holding $16.2M of DEFIANCE DAILY TARGET 2X LONG RKLB ETF (RKLX) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($5.5M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($4.4M), BANK OF AMERICA CORP /DE/ ($1.5M), JANE STREET GROUP, LLC ($1.2M), Belvedere Trading LLC ($1.2M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $5.5M | 216,200 | Added |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4.4M | 171,900 | New |
| 3 | BANK OF AMERICA CORP /DE/ | $1.5M | 59,487 | New |
| 4 | JANE STREET GROUP, LLC | $1.2M | 46,300 | Added |
| 5 | Belvedere Trading LLC | $1.2M | 45,152 | Trimmed |
| 6 | Optiver Holding B.V. | $674,127 | 26,364 | Added |
| 7 | Jump Financial, LLC | $665,459 | 26,025 | New |
| 8 | IMC-Chicago, LLC | $473,940 | 18,535 | New |
| 9 | StoneX Group Inc. | $400,631 | 15,668 | Trimmed |
| 10 | HRT FINANCIAL LP | $223,000 | 8,731 | New |
| 11 | MORGAN STANLEY | $256 | 10 | Trimmed |
| 12 | UBS Group AG | $26 | 1 | Trimmed |
| 13 | HOLLENCREST CAPITAL MANAGEMENT | $0 | 0 | Exited |
| 14 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 15 | GROUP ONE TRADING LLC | $0 | 0 | Exited |
| 16 | Tower Research Capital LLC (TRC) | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31