21 institutions reported holding $6.2M of TIDAL TRUST II (IONZ) in SEC 13F filings for 2026-06-30. Largest institutional holders: StoneX Group Inc. ($1.7M), Jump Financial, LLC ($1.2M), Optiver Holding B.V. ($1.1M), FLOW TRADERS U.S. LLC ($512,000), IMC-Chicago, LLC ($372,252). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | StoneX Group Inc. | $1.7M | 655,369 | Added |
| 2 | Jump Financial, LLC | $1.2M | 461,169 | New |
| 3 | Optiver Holding B.V. | $1.1M | 441,082 | Added |
| 4 | FLOW TRADERS U.S. LLC | $512,000 | 199,264 | New |
| 5 | IMC-Chicago, LLC | $372,252 | 144,845 | New |
| 6 | CITADEL ADVISORS LLC | $274,772 | 106,915 | Added |
| 7 | HRT FINANCIAL LP | $233,000 | 90,845 | New |
| 8 | JANE STREET GROUP, LLC | $210,234 | 81,803 | New |
| 9 | GTS SECURITIES LLC | $158,181 | 61,549 | New |
| 10 | TWO SIGMA SECURITIES, LLC | $149,271 | 58,082 | New |
| 11 | Scientech Research LLC | $149,235 | 58,068 | New |
| 12 | GOLDMAN SACHS GROUP INC | $98,840 | 38,459 | New |
| 13 | XTX Topco Ltd | $45,420 | 17,673 | New |
| 14 | UBS Group AG | $717 | 279 | Trimmed |
| 15 | SIMPLEX TRADING, LLC | $380 | 148 | Added |
| 16 | GROUP ONE TRADING LLC | $306 | 119 | Trimmed |
| 17 | OSAIC HOLDINGS, INC. | $129 | 50 | Hold |
| 18 | CITIGROUP INC | $77 | 30 | Added |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 20 | Belvedere Trading LLC | $0 | 0 | Exited |
| 21 | MYDA Advisors LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30