3 institutions reported holding $1.9M of Roundhill Cannabis ETF (WEED) in SEC 13F filings for 2026-06-30. Largest institutional holders: Mariner, LLC ($1.0M), NANO CAP NEW MILLENNIUM GROWTH FUND L P ($839,800), JANE STREET GROUP, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Mariner, LLC | $1.0M | 47,500 | Hold |
| 2 | NANO CAP NEW MILLENNIUM GROWTH FUND L P | $839,800 | 38,000 | Hold |
| 3 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30