3 institutions reported holding $1.5M of ELLINGTON FINANCIAL INC (EFCPRE) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($816,600), SIMPLEX TRADING, LLC ($631,504), GROUP ONE TRADING LLC ($20,415). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $816,600 | 60,000 | Added |
| 2 | SIMPLEX TRADING, LLC | $631,504 | 46,400 | Added |
| 3 | GROUP ONE TRADING LLC | $20,415 | 1,500 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30