4 institutions reported holding $3.1M of GRINDR INC (GRND.WS) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($1.8M), IMC-Chicago, LLC ($965,664), SIMPLEX TRADING, LLC ($367,871), HRT FINANCIAL LP ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $1.8M | 124,600 | Added |
| 2 | IMC-Chicago, LLC | $965,664 | 67,200 | Added |
| 3 | SIMPLEX TRADING, LLC | $367,871 | 25,600 | Added |
| 4 | HRT FINANCIAL LP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30