DEFINIUM THERAPEUTICS INC COM SHS is a security (CUSIP 24477V905) tracked across SEC portfolio filings. 2 institutional managers reported $3.5M on Form 13F as of 2026-03-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $3.3M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $259K | — |