9 institutions reported holding $2.1M of ROUNDHILL ETF TRUST (GDXW) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($868,949), JANE STREET GROUP, LLC ($736,817), CITADEL ADVISORS LLC ($457,380), SIMPLEX TRADING, LLC ($32,016), UBS Group AG ($25,011). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $868,949 | 23,938 | Added |
| 2 | JANE STREET GROUP, LLC | $736,817 | 20,298 | Trimmed |
| 3 | CITADEL ADVISORS LLC | $457,380 | 12,600 | Added |
| 4 | SIMPLEX TRADING, LLC | $32,016 | 882 | Added |
| 5 | UBS Group AG | $25,011 | 689 | New |
| 6 | GROUP ONE TRADING LLC | $22,433 | 618 | Added |
| 7 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 8 | OSAIC HOLDINGS, INC. | $0 | 0 | Exited |
| 9 | McAlvany Wealth Management LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30