Pinnbrook Capital Management LP reported 88 positions worth $601.01M for the quarter ended Jun 30, 2026, up 390.9% on the prior quarter. It opened 71 new positions, added to 14, trimmed 3 and exited 16. Its largest holding is Csx Corp at 7.4% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| CSX Csx Corp | +865.2K | +1,156.7% | $41.12M | 7.43% |
| NTRA Natera, Inc. | +69.3K | – | $18.81M | 3.13% |
| PWR Quanta Services, Inc. | +23.7K | – | $17.09M | 2.84% |
| TKR Timken Co | +113.5K | – | $16.49M | 2.74% |
| WAB Westinghouse Air Brake Technologies Corp | +61.1K | +760.0% | $16.46M | 3.1% |
| KGS Kodiak Gas Services, Inc. | +217.0K | +124.1% | $16.30M | 4.9% |
| TXN Texas Instruments Inc | +50.4K | – | $15.02M | 2.5% |
| ATI Ati Inc | +75.2K | +1,089.6% | $14.82M | 2.69% |
| ARMK Aramark | +257.7K | – | $14.66M | 2.44% |
| DTM DT Midstream, Inc. | +97.0K | – | $14.24M | 2.37% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| SLB Slb Limited | -120.8K | -100.0% | $6.21M | Exited |
| LRCX Lam Research Corp | -28.1K | -100.0% | $6.00M | Exited |
| DVN Devon Energy Corp | -118.3K | -100.0% | $5.95M | Exited |
| MRK Merck & Co., Inc. | -46.1K | -100.0% | $5.55M | Exited |
| CW Curtiss Wright Corp | -6,779 | -67.4% | $5.14M | 0.414% |
| LIN Linde Plc | -10.1K | -100.0% | $5.03M | Exited |
| AMAT Applied Materials Inc | -14.7K | -100.0% | $5.02M | Exited |
| PR Permian Resources Corp | -194.8K | -100.0% | $4.15M | Exited |
| MTZ Mastec Inc | -8,944 | -24.7% | $3.72M | 1.89% |
| TJX Tjx Companies Inc | -19.5K | -100.0% | $3.12M | Exited |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| NTRA Natera, Inc. | +69.3K | $18.81M | 3.13% |
| PWR Quanta Services, Inc. | +23.7K | $17.09M | 2.84% |
| TKR Timken Co | +113.5K | $16.49M | 2.74% |
| TXN Texas Instruments Inc | +50.4K | $15.02M | 2.5% |
| ARMK Aramark | +257.7K | $14.66M | 2.44% |
| DTM DT Midstream, Inc. | +97.0K | $14.24M | 2.37% |
| PFGC Performance Food Group Co | +115.0K | $12.86M | 2.14% |
| DBA Invesco Db Agriculture Fund | +421.6K | $11.24M | 1.87% |
| KNX Knight-Swift Transportation Holdings Inc. | +127.4K | $9.92M | 1.65% |
| STM STMicroelectronics N.V. | +131.3K | $9.84M | 1.64% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| SLB Slb Limited | -120.8K | $6.21M | 5.07% |
| LRCX Lam Research Corp | -28.1K | $6.00M | 4.9% |
| DVN Devon Energy Corp | -118.3K | $5.95M | 4.86% |
| MRK Merck & Co., Inc. | -46.1K | $5.55M | 4.53% |
| LIN Linde Plc | -10.1K | $5.03M | 4.11% |
| AMAT Applied Materials Inc | -14.7K | $5.02M | 4.1% |
| PR Permian Resources Corp | -194.8K | $4.15M | 3.39% |
| TJX Tjx Companies Inc | -19.5K | $3.12M | 2.54% |
| BWXT BWX Technologies, Inc. | -13.2K | $2.70M | 2.2% |
| FIVE Five Below, Inc | -11.3K | $2.58M | 2.11% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | CSX Csx Corp | Industrials | 940.0K | $44.68M | 7.43% | +865.2K | +1,156.7% | Added | 0.05% |
| 2 | KGS Kodiak Gas Services, Inc. | Energy | 391.9K | $29.44M | 4.9% | +217.0K | +124.1% | Added | 0.39% |
| 3 | JBL Jabil Inc | Technology | 58.9K | $22.69M | 3.78% | +36.8K | +167.2% | Added | 0.06% |
| 4 | NTRA Natera, Inc. | Healthcare | 69.3K | $18.81M | 3.13% | +69.3K | – | New | 0.05% |
| 5 | WAB Westinghouse Air Brake Technologies Corp | Industrials | 69.1K | $18.63M | 3.1% | +61.1K | +760.0% | Added | 0.04% |
| 6 | PWR Quanta Services, Inc. | Industrials | 23.7K | $17.09M | 2.84% | +23.7K | – | New | 0.02% |
| 7 | TKR Timken Co | Industrials | 113.5K | $16.49M | 2.74% | +113.5K | – | New | 0.16% |
| 8 | ATI Ati Inc | Basic Materials | 82.1K | $16.18M | 2.69% | +75.2K | +1,089.6% | Added | 0.06% |
| 9 | TXN Texas Instruments Inc | Technology | 50.4K | $15.02M | 2.5% | +50.4K | – | New | 0.01% |
| 10 | ARMK Aramark | Industrials | 257.7K | $14.66M | 2.44% | +257.7K | – | New | 0.1% |
| 11 | DTM DT Midstream, Inc. | Energy | 97.0K | $14.24M | 2.37% | +97.0K | – | New | 0.1% |
| 12 | STX Seagate Technology Holdings plc | Technology | 13.8K | $13.36M | 2.22% | +11.2K | +432.3% | Added | 0.01% |
| 13 | PFGC Performance Food Group Co | Consumer Staples | 115.0K | $12.86M | 2.14% | +115.0K | – | New | 0.07% |
| 14 | WDC Western Digital Corp | Technology | 19.3K | $12.31M | 2.05% | +6,080 | +46.1% | Added | 0.01% |
| 15 | MTZ Mastec Inc | Industrials | 27.2K | $11.33M | 1.89% | -8,944 | -24.7% | Reduced | 0.03% |
Tip. Select a row to see that position’s full history at Pinnbrook Capital Management.
As of its Q2 2026 13F filing, Pinnbrook Capital Management LP’s five largest positions were Csx Corp (CSX) at 7.4%, Kodiak Gas Services, Inc. (KGS) at 4.9%, Jabil Inc (JBL) at 3.8%, Natera, Inc. (NTRA) at 3.1%, Westinghouse Air Brake Technologies Corp (WAB) at 3.1% of the reported portfolio.
Pinnbrook Capital Management LP reported a 13F portfolio worth $601.01M across 88 positions for Q2 2026. That is up 390.9% from the previous quarter.
Its largest purchases by value were Csx Corp ($41.12M), Natera, Inc. ($18.81M), Quanta Services, Inc. ($17.09M). It opened 71 new positions.
Its largest sales by value were Slb Limited ($6.21M), Lam Research Corp ($6.00M), Devon Energy Corp ($5.95M). It exited 16 positions entirely.
From the Form 13F-HR reports Pinnbrook Capital Management LP files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.