10 institutions reported holding $14.4M of ROUNDHILL ETF TRUST (TSW) in SEC 13F filings for 2026-03-31. Largest institutional holders: EXCHANGE TRADED CONCEPTS, LLC ($12.4M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($1.5M), Chung Wu Investment Group, LLC ($537,234), GROUP ONE TRADING LLC ($680), HRT FINANCIAL LP ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | EXCHANGE TRADED CONCEPTS, LLC | $12.4M | 528,694 | Added |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.5M | 64,287 | Added |
| 3 | Chung Wu Investment Group, LLC | $537,234 | 22,900 | New |
| 4 | GROUP ONE TRADING LLC | $680 | 29 | Trimmed |
| 5 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 6 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 7 | Tower Research Capital LLC (TRC) | $0 | 0 | Exited |
| 8 | UBS Group AG | $0 | 0 | Exited |
| 9 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 10 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31