7 institutions reported holding $438,020 of 0 (ETU) in SEC 13F filings for 2026-03-31. Largest institutional holders: Belvedere Trading LLC ($148,500), CITADEL ADVISORS LLC ($131,868), StoneX Group Inc. ($70,680), FLOW TRADERS U.S. LLC ($62,000), SIMPLEX TRADING, LLC ($13,240). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Belvedere Trading LLC | $148,500 | 25,000 | New |
| 2 | CITADEL ADVISORS LLC | $131,868 | 22,200 | New |
| 3 | StoneX Group Inc. | $70,680 | 11,899 | New |
| 4 | FLOW TRADERS U.S. LLC | $62,000 | 10,498 | New |
| 5 | SIMPLEX TRADING, LLC | $13,240 | 2,229 | Trimmed |
| 6 | GROUP ONE TRADING LLC | $9,326 | 1,570 | New |
| 7 | Larson Financial Group LLC | $2,406 | 405 | Added |
Source: SEC Form 13F filings · as of 2026-03-31