6 institutions reported holding $87.7M of ROUNDHILL ETF TRUST (WEEK) in SEC 13F filings for 2026-03-31. Largest institutional holders: EXCHANGE TRADED CONCEPTS, LLC ($86.3M), JANE STREET GROUP, LLC ($882,965), CITADEL ADVISORS LLC ($525,358), OLD MISSION CAPITAL LLC ($0), GTS SECURITIES LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | EXCHANGE TRADED CONCEPTS, LLC | $86.3M | 862,813 | Hold |
| 2 | JANE STREET GROUP, LLC | $882,965 | 8,827 | Added |
| 3 | CITADEL ADVISORS LLC | $525,358 | 5,252 | Added |
| 4 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 5 | GTS SECURITIES LLC | $0 | 0 | Exited |
| 6 | One Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31