10 institutions reported holding $626,535 of ETF OPPORTUNITIES TRUST (GMEU) in SEC 13F filings for 2026-06-30. Largest institutional holders: Optiver Holding B.V. ($410,436), CITADEL ADVISORS LLC ($114,540), JANE STREET GROUP, LLC ($90,578), GROUP ONE TRADING LLC ($5,578), SIMPLEX TRADING, LLC ($4,556). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $410,436 | 49,450 | Added |
| 2 | CITADEL ADVISORS LLC | $114,540 | 13,800 | Trimmed |
| 3 | JANE STREET GROUP, LLC | $90,578 | 10,913 | New |
| 4 | GROUP ONE TRADING LLC | $5,578 | 672 | Added |
| 5 | SIMPLEX TRADING, LLC | $4,556 | 549 | Added |
| 6 | SBI Securities Co., Ltd. | $847 | 102 | Hold |
| 7 | UBS Group AG | $0 | 0 | Exited |
| 8 | Belvedere Trading LLC | $0 | 0 | Exited |
| 9 | Triumph Capital Management | $0 | 0 | Exited |
| 10 | Jump Financial, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30