6 institutions reported holding $19.3M of TOURMALINE OIL CORP (TRMLF) in SEC 13F filings for 2026-06-30. Largest institutional holders: GRACE & WHITE INC /NY ($16.6M), CONFLUENCE INVESTMENT MANAGEMENT LLC ($1.4M), KAHN BROTHERS GROUP INC ($1.1M), WELLINGTON-ALTUS USA INC. ($105,093), PNC Financial Services Group, Inc. ($66,583). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GRACE & WHITE INC /NY | $16.6M | 396,668 | Trimmed |
| 2 | CONFLUENCE INVESTMENT MANAGEMENT LLC | $1.4M | 33,988 | New |
| 3 | KAHN BROTHERS GROUP INC | $1.1M | 26,959 | Hold |
| 4 | WELLINGTON-ALTUS USA INC. | $105,093 | 1,894 | Added |
| 5 | PNC Financial Services Group, Inc. | $66,583 | 1,593 | Added |
| 6 | Golden State Equity Partners | $0 | 0 | Exited |
来源：SEC 13F 申报文件 · 截至 2026-06-30