3 institutions reported holding $1.2M of OSISKO DEVELOPMENT CORP (ODVWW) in SEC 13F filings for 2026-03-31. Largest institutional holders: GROUP ONE TRADING LLC ($486,525), IMC-Chicago, LLC ($420,875), SIMPLEX TRADING, LLC ($287,300). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $486,525 | 149,700 | Trimmed |
| 2 | IMC-Chicago, LLC | $420,875 | 129,500 | Added |
| 3 | SIMPLEX TRADING, LLC | $287,300 | 88,400 | Added |
Source: SEC Form 13F filings · as of 2026-03-31