8 institutions reported holding $11.4M of TIDAL TRUST II (AVXX) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($4.3M), IMC-Chicago, LLC ($3.9M), GROUP ONE TRADING LLC ($2.6M), HRT FINANCIAL LP ($322,000), Optiver Holding B.V. ($222,991). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $4.3M | 524,000 | Added |
| 2 | IMC-Chicago, LLC | $3.9M | 310,500 | Added |
| 3 | GROUP ONE TRADING LLC | $2.6M | 308,500 | Trimmed |
| 4 | HRT FINANCIAL LP | $322,000 | 41,978 | Trimmed |
| 5 | Optiver Holding B.V. | $222,991 | 32,601 | New |
| 6 | GTS SECURITIES LLC | $0 | 0 | Exited |
| 7 | Strategic Investment Solutions, Inc. /IL | $0 | 180 | New |
| 8 | T3 Companies, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30