Pinnbrook Capital Management LP holds a diversified book of 88 stocks worth $601.0M as of Q2 2026 (disclosed Aug 12, 2026, a ~43-day 13F lag). This quarter they opened Natera Inc and trimmed Mastec Inc. Their largest long position is CSX Corp at 7% of the equity book. They also disclosed $114.6M in put options (a bearish bet) and $222.6M in call options (bullish), shown separately below and excluded from the equity book.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
99% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Pinnbrook Capital Management LP
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Global Retirement Partners, LLC | 80 / 80 | $398.4M |
| NewEdge Advisors, LLC | 79 / 80 | $2.2B |
| Arax Advisory Partners | 79 / 80 | $831.0M |
| FMR LLC | 78 / 80 | $310.9B |
| JPMORGAN CHASE & CO | 78 / 80 | $140.1B |
| MORGAN STANLEY | 78 / 80 | $139.7B |
| BANK OF AMERICA CORP /DE/ | 78 / 80 | $94.0B |
| PNC FINANCIAL SERVICES GROUP, INC. | 78 / 80 | $54.0B |
Ranked by how many of Pinnbrook Capital Management LP's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | CSX Corp COM | $44.7M | 940.0K | 7.4% | ▲13× Added · +865K sh | |
| 2 | Kodiak Gas Svcs Inc COM | $29.4M | 391.9K | 4.9% | ▲+124% Added · +217K sh | |
| 3 | Jabil Inc COM | $22.7M | 58.9K | 3.8% | ▲+167% Added · +37K sh | |
| 4 | Natera Inc COM | $18.8M | 69.3K | 3.1% | ▲New New position | |
| 5 | Wabtec COM | $18.6M | 69.1K | 3.1% | ▲+760% Added · +61K sh | |
| 6 | Quanta Svcs Inc COM | $17.1M | 23.7K | 2.8% | ▲New New position | |
| 7 | Timken Co COM | $16.5M | 113.5K | 2.7% | ▲New New position | |
| 8 | Ati Inc COM | $16.2M | 82.1K | 2.7% | ▲12× Added · +75K sh | |
| 9 | Texas Instrs Inc COM | $15.0M | 50.4K | 2.5% | ▲New New position | |
| 10 | Aramark COM | $14.7M | 257.7K | 2.4% | ▲New New position | |
| 11 | DT Midstream Inc COMMON STOCK | $14.2M | 97.0K | 2.4% | ▲New New position | |
| 12 | Seagate Technology HLDNGS PL ORD SHS | $13.4M | 13.8K | 2.2% | ▲+432% Added · +11K sh | |
| 13 | Performance Food Group Co COM | $12.9M | 115.0K | 2.1% | ▲New New position | |
| 14 | Western Digital Corp COM | $12.3M | 19.3K | 2.0% | ▲+46% Added · +6K sh | |
| 15 | Mastec Inc COM | $11.3M | 27.2K | 1.9% | ▼−25% Reduced · −9K sh | |
| 16 | Invesco DB Multi-Sector Comm AGRICULTURE FD | $11.2M | 421.6K | 1.9% | ▲New New position | |
| 17 | Viking Holdings Ltd ORD SHS | $10.0M | 95.3K | 1.7% | ▲+533% Added · +80K sh | |
| 18 | Knight-Swift Transn Hldgs In CL A | $9.9M | 127.4K | 1.7% | ▲New New position | |
| 19 | Stmicroelectronics N V NY REGISTRY | $9.8M | 131.3K | 1.6% | ▲New New position | |
| 20 | Alphabet Inc CAP STK CL A | $9.1M | 25.4K | 1.5% | ▲New New position | |
| 21 | Howmet Aerospace Inc COM | $9.0M | 33.3K | 1.5% | ▲New New position | |
| 22 | Sphere Entertainment Co CL A | $8.9M | 51.2K | 1.5% | ▲+20% Added · +8K sh | |
| 23 | Nvent Elec PLC SHS | $8.8M | 52.1K | 1.5% | ▲+207% Added · +35K sh | |
| 24 | Matson Inc COM | $8.8M | 45.8K | 1.5% | ▲+409% Added · +37K sh | |
| 25 | Technipfmc PLC COM | $8.6M | 129.1K | 1.4% | ▲+193% Added · +85K sh | |
| 26 | Ross Stores Inc COM | $8.4M | 39.6K | 1.4% | ▲+65% Added · +16K sh | |
| 27 | Esco Technologies Inc COM | $8.0M | 23.0K | 1.3% | ▲New New position | |
| 28 | Eli Lilly & Co COM | $8.0M | 6.6K | 1.3% | ▲New New position | |
| 29 | Somnigroup International Inc COM | $8.0M | 101.4K | 1.3% | ▲New New position | |
| 30 | TD Synnex Corporation COM | $7.4M | 27.6K | 1.2% | ▲New New position | |
| 31 | Ventas Inc COM | $7.2M | 81.2K | 1.2% | ▲New New position | |
| 32 | Flex Ltd ORD | $7.1M | 43.7K | 1.2% | ▲New New position | |
| 33 | Valero Energy Corp COM | $6.9M | 26.6K | 1.2% | ▲New New position | |
| 34 | CDW Corp COM | $6.2M | 44.3K | 1.0% | ▲New New position | |
| 35 | Twilio Inc CL A | $6.1M | 29.6K | 1.0% | ▲New New position | |
| 36 | Globalfoundries Inc ORDINARY SHARES | $5.9M | 71.6K | 1.0% | ▲New New position | |
| 37 | Welltower Inc COM | $5.8M | 25.5K | 1.0% | ▲New New position | |
| 38 | Innio NV ORDINARY SHARES | $5.7M | 142.9K | 0.9% | ▲New New position | |
| 39 | MKS Inc. COM | $5.6M | 12.7K | 0.9% | ▲New New position | |
| 40 | Digitalocean Hldgs Inc COM | $5.4M | 34.3K | 0.9% | ▲New New position | |
| 41 | Hyatt Hotels Corp COM CL A | $5.1M | 26.5K | 0.9% | ▲New New position | |
| 42 | Arrow Electrs Inc COM | $5.1M | 23.7K | 0.8% | ▲New New position | |
| 43 | Hut 8 Corp COM | $5.0M | 43.2K | 0.8% | ▲New New position | |
| 44 | Charles Riv Labs Intl Inc COM | $4.8M | 21.3K | 0.8% | ▲New New position | |
| 45 | Trex Inc COM | $4.7M | 93.9K | 0.8% | ▲New New position | |
| 46 | Datadog Inc CL A COM | $4.6M | 17.7K | 0.8% | ▲New New position | |
| 47 | Taiwan Semiconductor Manufac SPONSORED ADS | $4.3M | 8.9K | 0.7% | ▲New New position | |
| 48 | Coherent Corp COM | $4.0M | 10.2K | 0.7% | ▲New New position | |
| 49 | Fortinet Inc COM | $4.0M | 25.9K | 0.7% | ▲New New position | |
| 50 | Snowflake Inc COM SHS | $3.8M | 15.1K | 0.6% | ▲New New position |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1856103/holdings"
Use Arkolith to show PINNBROOK CAPITAL MANAGEMENT LP's latest holdings, largest changes, and filing provenance.
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| PUT · bearish | INVESCO QQQ TRUST SERIES 1QQQ | $110.5M | 150K |
| CALL · bullish | ADVANCED MICRO DEVICESAMD | $38.0M | 65K |
| CALL · bullish | TAIWAN SEMICONDUCTOR-SP ADRTSM | $26.7M | 56K |
| CALL · bullish | SANDISK CORPSNDK | $26.1M | 12K |
| CALL · bullish | SEAGATE TECHNOLOGY HOLDINGSSTX | $25.5M | 26K |
| CALL · bullish | MARATHON PETROLEUM CORPMPC | $22.1M | 86K |
| CALL · bullish | MICRON TECHNOLOGY INCMU | $16.7M | 15K |
| CALL · bullish | TECHNIPFMC PLCFTI | $16.6M | 250K |
| CALL · bullish | AMAZON.COM INCAMZN | $13.9M | 59K |
| CALL · bullish | HUT 8 CORPHUT | $8.9M | 77K |
| CALL · bullish | CIPHER DIGITAL INCCIFR | $8.6M | 350K |
| CALL · bullish | SNOWFLAKE INCSNOW | $8.1M | 32K |
| CALL · bullish | NOKIA CORP-SPON ADRNOK | $7.2M | 542K |
| PUT · bearish | NIKE INC -CL BNKE | $4.1M | 100K |
| CALL · bullish | LUMENTUM HOLDINGS INCLITE | $4.0M | 5K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 12, 2026 | 103 | $938.1M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 14, 2026 | 45 | $383.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 6, 2026 | 105 | $715.0M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.