9 institutions reported holding $137.9M of EOS ENERGY ENTERPRISES INC (EOSEW) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($89.3M), IMC-Chicago, LLC ($28.2M), SIMPLEX TRADING, LLC ($18.5M), HRT FINANCIAL LP ($1.6M), CIBC Bancorp USA Inc. ($176,400). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $89.3M | 15.2M | Added |
| 2 | IMC-Chicago, LLC | $28.2M | 4.8M | Added |
| 3 | SIMPLEX TRADING, LLC | $18.5M | 3.1M | Trimmed |
| 4 | HRT FINANCIAL LP | $1.6M | 280,400 | Added |
| 5 | CIBC Bancorp USA Inc. | $176,400 | 30,000 | Hold |
| 6 | SUMMIT SECURITIES GROUP LLC | $88,200 | 15,000 | New |
| 7 | JPMORGAN CHASE & CO | $41,412 | 6,800 | Added |
| 8 | OSAIC HOLDINGS, INC. | $490 | 10 | Trimmed |
| 9 | Skaana Management L.P. | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30