4 institutions reported holding $2.9M of ENCORE ENERGY CORP (ENCUF) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($1.1M), CIBC Bancorp USA Inc. ($871,150), SIMPLEX TRADING, LLC ($483,390), IMC-Chicago, LLC ($425,619). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $1.1M | 828,100 | Trimmed |
| 2 | CIBC Bancorp USA Inc. | $871,150 | 665,000 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $483,390 | 369,000 | Trimmed |
| 4 | IMC-Chicago, LLC | $425,619 | 324,900 | Added |
Source: SEC Form 13F filings · as of 2026-06-30