9 institutions reported holding $7.9M of ETF OPPORTUNITIES TRUST (CIFU) in SEC 13F filings for 2026-06-30. Largest institutional holders: CITADEL ADVISORS LLC ($5.3M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($1.6M), Belvedere Trading LLC ($266,480), FLOW TRADERS U.S. LLC ($258,000), IMC-Chicago, LLC ($240,465). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $5.3M | 159,174 | Added |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.6M | 48,830 | New |
| 3 | Belvedere Trading LLC | $266,480 | 8,000 | New |
| 4 | FLOW TRADERS U.S. LLC | $258,000 | 7,737 | New |
| 5 | IMC-Chicago, LLC | $240,465 | 7,219 | New |
| 6 | Optiver Holding B.V. | $188,768 | 5,667 | Trimmed |
| 7 | SIMPLEX TRADING, LLC | $18,720 | 562 | Trimmed |
| 8 | FNY Investment Advisers, LLC | $0 | 0 | Exited |
| 9 | Tower Research Capital LLC (TRC) | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30