3 institutions reported holding $686,619 of FORTRESS BIOTECH INC (FBIOP) in SEC 13F filings for 2026-03-31. Largest institutional holders: GROUP ONE TRADING LLC ($523,683), SIMPLEX TRADING, LLC ($162,936), NATIONAL BANK OF CANADA /FI/ ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $523,683 | 187,700 | Added |
| 2 | SIMPLEX TRADING, LLC | $162,936 | 58,400 | Trimmed |
| 3 | NATIONAL BANK OF CANADA /FI/ | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31