7 institutions reported holding $16.6M of ROUNDHILL ETF TRUST (AMZW) in SEC 13F filings for 2026-06-30. Largest institutional holders: EXCHANGE TRADED CONCEPTS, LLC ($15.7M), Belvedere Trading LLC ($797,224), GROUP ONE TRADING LLC ($71,821), SIMPLEX TRADING, LLC ($17,129), CITADEL ADVISORS LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | EXCHANGE TRADED CONCEPTS, LLC | $15.7M | 436,338 | Trimmed |
| 2 | Belvedere Trading LLC | $797,224 | 22,200 | New |
| 3 | GROUP ONE TRADING LLC | $71,821 | 2,000 | New |
| 4 | SIMPLEX TRADING, LLC | $17,129 | 477 | New |
| 5 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 6 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
| 7 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30