Tourmaline Oil Corp (TRMLF) shareholders
Close on Oct 19, 2026Market cap –P/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Shares held by institutions
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of TRMLF | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Grace & White Inc /Ny | 396,668 | – | $16.56M | −775 | 2.62% |
| Confluence Investment Management LLC | 33,988 | – | $1.42M | New | 0.02% |
| Kahn Brothers Group Inc | 26,959 | – | $1.13M | – | 0.18% |
| PNC Financial Services Group, Inc. | 1,593 | – | $66.58K | +7 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 4 | 0M | 1 / 1 | 1 / 1 | 0M | 0M |
| Q1 2026 | 4 | 0M | 1 / 1 | 0 / 2 | 0M | 0M |
| Q4 2025 | 5 | 1M | 3 / 1 | 1 / 0 | 0M | 0M |
| Q3 2025 | 2 | 0M | 0 / 0 | 2 / 0 | 0M | 0M |
| Q2 2025 | 2 | 0M | 0 / 1 | 0 / 0 | 0M | 0M |
| Q1 2025 | 2 | 0M | 0 / 0 | 1 / 0 | 0M | 0M |
| Q4 2024 | 2 | 0M | 1 / 0 | 0 / 0 | 0M | 0M |
| Q3 2024 | 1 | 0M | 0 / 0 | 1 / 1 | 0M | 0M |
| Q2 2024 | 2 | 0M | 1 / 0 | 1 / 1 | 0M | 0M |
| Q1 2024 | 2 | 0M | 0 / 0 | 0 / 2 | 0M | 6M |
| Q4 2023 | 4 | 6M | 2 / 1 | 1 / 1 | 6M | 0M |
| Q3 2023 | 3 | 0M | 0 / 0 | 3 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
161 funds held TRMLF in Q2 2026, 37% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of TRMLF | Value | % of fund | As of |
|---|---|---|---|---|---|
| Income Fund of America | 6,569,285 | – | $206.95M | 0.20% | Jul 31, 2026 |
| EUPAC Fund | 6,273,613 | – | $184.96M | 0.19% | Jun 30, 2026 |
| Vanguard Total International Stock Index Fund | 5,429,791 | – | $336.16M | 0.04% | Jul 31, 2026 |
| Vanguard Developed Markets Index Fund | 3,605,576 | – | $213.81M | 0.05% | Jun 30, 2026 |
| Dimensional International Value ETF | 2,268,899 | – | $71.38M | 0.47% | Jul 31, 2026 |
| New Perspective Fund | 2,015,054 | – | $59.41M | 0.05% | Jun 30, 2026 |
| Fidelity SAI Canada Equity Index Fund | 1,900,704 | – | $59.88M | 0.53% | Jul 31, 2026 |
| T. Rowe Price New Horizons Fund, Inc. | 1,725,518 | – | $50.87M | 0.49% | Jun 30, 2026 |
| The Dfa International Value Series | 1,579,482 | – | $49.76M | 0.36% | Jul 31, 2026 |
| International Growth and Income Fund | 1,327,788 | – | $39.15M | 0.27% | Jun 30, 2026 |
| JPMorgan BetaBuilders Canada ETF | 1,302,799 | – | $41.04M | 0.53% | Jul 31, 2026 |
| International Core Equity 2 Portfolio | 1,068,393 | – | $33.66M | 0.11% | Jul 31, 2026 |
| BlackRock Large Cap Focus Value Fund, Inc. | 987,418 | – | $29.11M | 2.07% | Jun 30, 2026 |
| Vanguard Ftse All-World Ex-US Index Fund | 885,508 | – | $54.82M | 0.04% | Jul 31, 2026 |
| Schwab International Equity ETF | 812,754 | – | $26.99M | 0.06% | May 31, 2026 |
Short interest
Shares sold short and not yet bought back, as of Oct 15, 2026 (FINRA, reported twice a month)
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Tourmaline Oil's stock actually held short. Settlement fails (shares not delivered on time) peaked at 18,377 shares on Aug 3, 2026 over the last 90 days.