9 institutions reported holding $772,241 of ROUNDHILL ETF TRUST (COIW) in SEC 13F filings for 2026-03-31. Largest institutional holders: JANE STREET GROUP, LLC ($325,862), CITADEL ADVISORS LLC ($295,240), CENTAURUS FINANCIAL, INC. ($137,000), SIMPLEX TRADING, LLC ($14,139), OLD MISSION CAPITAL LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | $325,862 | 26,710 | Trimmed |
| 2 | CITADEL ADVISORS LLC | $295,240 | 24,200 | New |
| 3 | CENTAURUS FINANCIAL, INC. | $137,000 | 11,190 | Hold |
| 4 | SIMPLEX TRADING, LLC | $14,139 | 1,159 | Trimmed |
| 5 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 7 | EXCHANGE TRADED CONCEPTS, LLC | $0 | 0 | Exited |
| 8 | Tower Research Capital LLC (TRC) | $0 | 0 | Exited |
| 9 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31