4 institutions reported holding $877,261 of ROUNDHILL ETF TRUST (UBEW) in SEC 13F filings for 2026-06-30. Largest institutional holders: GTS SECURITIES LLC ($527,038), Belvedere Trading LLC ($350,223), OLD MISSION CAPITAL LLC ($0), SIMPLEX TRADING, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GTS SECURITIES LLC | $527,038 | 19,172 | New |
| 2 | Belvedere Trading LLC | $350,223 | 12,740 | New |
| 3 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 4 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30