Castle Hook Partners LP
Long book
$4.95B
Q1 2026
Positions
44
Top-10 weight
54%
concentration
Last quarter
+22.4%
SPY +14.8%
Turnover
69%
of book per quarter
Strategy in plain words
auto-generated from filingsCastle Hook Partners LP is a concentrated fundamental stock-picker, running a $4.95B US long book across 44 positions.
The portfolio is concentrated: the top 10 names carry 54% of the portfolio. Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: NATERA INC, COMFORT SYSTEMS USA INC, EQUINIX INC, RTX CORP, WALMART INC.
Over the last 9 quarters its long book ran on average 4.6pp per quarter ahead of the S&P 500, beating the index in 6 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+4.2%
Q2 2024
+11.3%
Q3 2024
+18.4%
Q4 2024
-6.3%
Q1 2025
+20.2%
Q2 2025
+7.7%
Q3 2025
+6.8%
Q4 2025
-3.0%
Q1 2026
+22.4%
Sector allocation
Technology 32%
Industrials 19%
Healthcare 18%
Materials 11%
Consumer discretionary 8%
Other 5%
Energy 3%
Services media 3%
Long book by quarter
What does Castle Hook own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| NTRA NATERA INC | Healthcare | 2.5M | $505.9M | 10.2% | +16.7% |
| FIX COMFORT SYSTEMS USA INC | Industrials | 208.9K | $288.1M | 5.8% | -22.0% |
| RTX RTX CORP | Industrials | 1.3M | $248.2M | 5.0% | New |
| WMT WALMART INC | Consumer discretionary | 2.0M | $243.4M | 4.9% | -2.3% |
| WDC WESTERN DIGITAL CORP | Technology | 878.9K | $237.7M | 4.8% | -33.7% |
| LHX L3HARRIS TECHNOLOGIES INC | Technology | 674.1K | $232.7M | 4.7% | New |
| STXN SEAGATE TECHNOLOGY HOLDINGS | — | 561.6K | $220.0M | 4.4% | -30.0% |
| INSM INSMED INC | Healthcare | 1.3M | $207.6M | 4.2% | +1.3% |
| TTMI TTM TECHNOLOGIES | Technology | 2.1M | $206.0M | 4.2% | +9.4% |
| KRMN KARMAN HOLDINGS INC | Industrials | 2.5M | $199.6M | 4.0% | New |
| AMAT APPLIED MATERIALS INC | Technology | 520.6K | $177.9M | 3.6% | +115.4% |
| SNDK SANDISK CORP | Technology | 276.9K | $175.9M | 3.6% | +3741.0% |
| SOLS SOLSTICE ADV MATERIALS INC | Materials | 2.2M | $169.6M | 3.4% | +87.1% |
| DHR DANAHER CORP | Technology | 880.0K | $166.8M | 3.4% | -23.6% |
| CCJ CAMECO CORP | Materials | 1.4M | $150.8M | 3.0% | -33.6% |
| XOM EXXON MOBIL CORP | Energy | 870.2K | $147.6M | 3.0% | New |
| LIN LINDE PLC | Materials | 255.0K | $126.4M | 2.6% | New |
| LYV LIVE NATION ENTERTAINMENT IN | Services media | 798.0K | $121.7M | 2.5% | New |
| LITE LUMENTUM HOLDINGS INC | Technology | 151.4K | $106.4M | 2.2% | +1332.9% |
| DKS DICK'S SPORTING GOODS INC | Consumer discretionary | 509.3K | $101.0M | 2.0% | -13.4% |
| ADI ANALOG DEVICES INC | Technology | 286.0K | $91.0M | 1.8% | +8750.7% |
| DXCM DEXCOM INC | Healthcare | 801.8K | $50.4M | 1.0% | -64.4% |
| STLD STEEL DYNAMICS INC | Industrials | 269.6K | $48.5M | 1.0% | New |
| VIK VIKING HOLDINGS LTD | Industrials | 634.1K | $46.6M | 0.9% | New |
| NAMS NEWAMSTERDAM PHARMA CO NV | Healthcare | 1.0M | $33.4M | 0.7% | -3.9% |
| ALB ALBEMARLE CORP | Materials | 145.2K | $26.1M | 0.5% | -90.1% |
| COMP COMPASS INC - CLASS A | Real estate | 2.5M | $18.3M | 0.4% | +1735.4% |
| NUE NUCOR CORP | Industrials | 85.7K | $14.5M | 0.3% | New |
| TSCO TRACTOR SUPPLY COMPANY | Consumer discretionary | 200.0K | $9.1M | 0.2% | -11.1% |
| APP APPLOVIN CORP-CLASS A | Technology | 15.0K | $6.0M | 0.1% | -96.2% |
| CRBG COREBRIDGE FINANCIAL INC | Financials | 175.6K | $4.2M | 0.1% | New |
| AMZN AMAZON.COM INC | Consumer discretionary | 9.8K | $2.0M | 0.0% | New |
| W WAYFAIR INC- CLASS A | Consumer discretionary | 25.6K | $1.9M | 0.0% | New |
| AZN ASTRAZENECA PLC | Healthcare | 9.0K | $1.8M | 0.0% | New |
| HAS HASBRO INC | Other | 15.2K | $1.4M | 0.0% | New |
| ABT ABBOTT LABORATORIES | Healthcare | 11.3K | $1.2M | 0.0% | New |
| MCK MCKESSON CORP | Consumer discretionary | 916 | $793K | 0.0% | New |
| SGI SOMNIGROUP INTERNATIONAL INC | Other | 9.2K | $677K | 0.0% | New |
| NVDA NVIDIA CORP | Technology | 3.0K | $519K | 0.0% | -90.3% |
| ZVIA ZEVIA PBC-A | Consumer staples | 171.8K | $201K | 0.0% | New |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 15, 2026 | 50 | $23.44B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 17, 2026 | 59 | $24.07B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 63 | $19.74B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 14, 2025 | 71 | $17.60B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 15, 2025 | 37 | $9.66B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 14, 2025 | 45 | $8.09B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 39 | $5.34B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 49 | $4.25B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 13, 2024 | 56 | $3.56B | canonical | SEC ↗ |
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