In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 15, 2026), Castle Hook Partners LP reported 44 stock positions worth $4.9 billion . Its top holding was Natera (NTRA) at 10.2% of the portfolio, followed by Comfort Systems USA (FIX, 5.8% ) and Equinix (EQIX, 5.2% ). Compared with Q4 2025, it opened 20 new positions, sold out of 30, added to 10 and reduced 14. The biggest buy was a new position in Equinix (EQIX) and the biggest sale an exit from Citigroup (C).
Location NEW YORK, NY
CIK 0001687241
Portfolio Value $4.9B (Q1 2026) Holdings 44 stocks · $4.9B Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q4 2025 NTRA Natera Inc. 2,529,810 $505.9M Add +16.7% FIX Comfort Systems USA Inc. 208,906 $288.1M Reduce -22.0% EQIX Equinix Inc. 263,929 $258.7M New RTX RTX Corp. 1,286,591 $248.2M New WMT Walmart Inc. 1,958,823 $243.4M Reduce -2.3% WDC Western Digital Corp. 878,939 $237.7M Reduce -33.7% WELL Welltower Inc. 1,191,651 $235.6M Reduce -4.6% LHX L3HARRIS Technologies Inc. 674,121 $232.7M New STX Seagate Technology Holdings 561,647 $220.0M Reduce -30.0% INSM Insmed Inc. 1,269,754 $207.6M Add +1.3% TTMI TTM Technologies 2,114,134 $206.0M Add +9.4% KRMN Karman Holdings Inc. 2,493,778 $199.6M New AMAT Applied Materials Inc. 520,581 $177.9M Add +115.4% SNDK Sandisk Corp. 276,858 $175.9M Add +3741.0% SOLS Solstice Adv Materials Inc. 2,226,617 $169.6M Add +87.0% DHR Danaher Corp. 879,960 $166.8M Reduce -23.6% CCJ Cameco Corp. 1,388,052 $150.8M Reduce -33.5% XOM Exxon Mobil Corp. 870,188 $147.6M New LIN Linde PLC 255,043 $126.4M New LYV Live Nation Entertainment Inc. 798,050 $121.7M New LITE Lumentum Holdings Inc. 151,430 $106.4M Add +1332.9% DKS Dick's Sporting Goods Inc. 509,254 $101.0M Reduce -13.4% ADI Analog Devices Inc. 285,967 $91.0M Add +8750.7% BP BP PLC-Spons ADR 1,123,129 $52.8M New DXCM Dexcom Inc. 801,847 $50.4M Reduce -64.4% STLD Steel Dynamics Inc. 269,601 $48.5M New VIK Viking Holdings Ltd. 634,137 $46.6M New NAMS Newamsterdam Pharma Co. NV 1,042,637 $33.4M Reduce -3.9% ALB Albemarle Corp. 145,217 $26.1M Reduce -90.1% COMP Compass Inc. Class A 2,498,669 $18.3M Add +1735.4% NUE Nucor Corp. 85,668 $14.5M New ASHR Xtrackers Harvest Csi 300 CH 283,242 $9.2M New TSCO Tractor Supply Company 200,000 $9.1M Reduce -11.1% APP AppLovin Corp. Class A 15,000 $6.0M Reduce -96.2% CRBG Corebridge Financial Inc. 175,626 $4.2M New AMZN Amazon.com Inc. 9,772 $2.0M New W Wayfair Inc. Class A 25,624 $1.9M New AZN Astrazeneca PLC 8,967 $1.8M Add +117.8% HAS Hasbro Inc. 15,241 $1.4M New ABT Abbott Laboratories 11,269 $1.2M New MCK McKesson Corp. 916 $793K New SGI Somnigroup International Inc. 9,160 $677K New NVDA Nvidia Corp. 2,975 $519K Reduce -90.3% ZVIA Zevia PBC-A 171,796 $201K New
Options reported separately and not counted above: SPY puts ($10.8B), GLD calls ($6.0B), UAL calls ($1.2B), DAL calls ($488.0M), IWM puts ($81.6M), EWY puts ($21.5M).
Portfolio Sells Q4 2025 → Q1 2026 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q4 2025 % Of Portfolio Change To Portfolio ▲ C Citigroup Inc. Sold out 0.00% −8.73 LLY Eli Lilly & Co. Sold out 0.00% −5.93 SHOP Shopify Inc. Class A Sold out 0.00% −4.58 CVNA Carvana Co. Sold out 0.00% −4.22 TSLA Tesla Inc. Sold out 0.00% −3.92 APP AppLovin Corp. Class A Reduce -96.2% 0.12% −3.70 CLF Cleveland-Cliffs Inc. Sold out 0.00% −3.45 U Unity Software Inc. Sold out 0.00% −3.16 AA Alcoa Corp. Sold out 0.00% −3.03 GOOG Alphabet Inc. Class C Sold out 0.00% −2.86 FCX Freeport-McMoran Inc. Sold out 0.00% −2.58 ALB Albemarle Corp. Reduce -90.1% 0.53% −2.45 FSLR First Solar Inc. Sold out 0.00% −1.67 TEVA Teva Pharmaceutical-SP ADR Sold out 0.00% −1.18 DXCM Dexcom Inc. Reduce -64.4% 1.02% −1.13 PLD Prologis Inc. Sold out 0.00% −1.05 SQM Quimica Y Minera Chil-SP ADR Sold out 0.00% −1.00 GEHC GE Healthcare Technology Sold out 0.00% −0.97 WMB Williams Cos Inc. Sold out 0.00% −0.89 DASH DoorDash Inc. Class A Sold out 0.00% −0.76 SHLS Shoals Technologies Group -A Sold out 0.00% −0.58 DHR Danaher Corp. Reduce -23.6% 3.37% −0.42 ARES Ares Management Corp. Class A Sold out 0.00% −0.40 MT Arcelormittal-NY Registered Sold out 0.00% −0.09 COF Capital One Financial Corp. Sold out 0.00% −0.08 NVDA Nvidia Corp. Reduce -90.3% 0.01% −0.07 EVH Evolent Health Inc. Class A Sold out 0.00% −0.05 KKR KKR & Co. Inc. Sold out 0.00% −0.04 FICO Fair Isaac Corp. Sold out 0.00% −0.04 CIEN Ciena Corp. Sold out 0.00% −0.04 UPST Upstart Holdings Inc. Sold out 0.00% −0.03 ARE Alexandria Real Estate Equit Sold out 0.00% −0.03 RKT Rocket Cos Inc. Class A Sold out 0.00% −0.02 AVGO Broadcom Inc. Sold out 0.00% −0.02 SNOW Snowflake Inc. Sold out 0.00% −0.01 TSCO Tractor Supply Company Reduce -11.1% 0.18% +0.02 NAMS Newamsterdam Pharma Co. NV Reduce -3.9% 0.67% +0.13 CCJ Cameco Corp. Reduce -33.5% 3.05% +0.30 DKS Dick's Sporting Goods Inc. Reduce -13.4% 2.04% +0.37 STX Seagate Technology Holdings Reduce -30.0% 4.45% +1.27 WELL Welltower Inc. Reduce -4.6% 4.76% +1.43 WDC Western Digital Corp. Reduce -33.7% 4.80% +1.52 WMT Walmart Inc. Reduce -2.3% 4.92% +1.71 FIX Comfort Systems USA Inc. Reduce -22.0% 5.82% +2.23
Portfolio Buys Q4 2025 → Q1 2026 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q4 2025 % Of Portfolio Change To Portfolio ▼ EQIX Equinix Inc. New 5.23% +5.23 RTX RTX Corp. New 5.02% +5.02 LHX L3HARRIS Technologies Inc. New 4.70% +4.70 KRMN Karman Holdings Inc. New 4.03% +4.03 SNDK Sandisk Corp. Add +3741.0% 3.55% +3.53 NTRA Natera Inc. Add +16.7% 10.22% +3.08 XOM Exxon Mobil Corp. New 2.98% +2.98 AMAT Applied Materials Inc. Add +115.4% 3.60% +2.70 SOLS Solstice Adv Materials Inc. Add +87.0% 3.43% +2.60 LIN Linde PLC New 2.56% +2.56 LYV Live Nation Entertainment Inc. New 2.46% +2.46 TTMI TTM Technologies Add +9.4% 4.16% +2.24 LITE Lumentum Holdings Inc. Add +1332.9% 2.15% +2.09 ADI Analog Devices Inc. Add +8750.7% 1.84% +1.83 BP BP PLC-Spons ADR New 1.07% +1.07 INSM Insmed Inc. Add +1.3% 4.20% +1.06 STLD Steel Dynamics Inc. New 0.98% +0.98 VIK Viking Holdings Ltd. New 0.94% +0.94 COMP Compass Inc. Class A Add +1735.4% 0.37% +0.35 NUE Nucor Corp. New 0.29% +0.29 ASHR Xtrackers Harvest Csi 300 CH New 0.19% +0.19 CRBG Corebridge Financial Inc. New 0.08% +0.08 AMZN Amazon.com Inc. New 0.04% +0.04 W Wayfair Inc. Class A New 0.04% +0.04 HAS Hasbro Inc. New 0.03% +0.03 AZN Astrazeneca PLC Add +117.8% 0.04% +0.02 ABT Abbott Laboratories New 0.02% +0.02 MCK McKesson Corp. New 0.02% +0.02 SGI Somnigroup International Inc. New 0.01% +0.01 ZVIA Zevia PBC-A New 0.00% +0.00
Options Activity Q4 2025 → Q1 2026 Security Type Change vs Q4 2025 Underlying Shares Value ▼ SPY SS SPDR S&P 500 ETF Trust-US put Reduce -97.4% 165,942 $10.8B GLD SPDR Gold Shares call Reduce -99.3% 138,286 $6.0B QQQ Invesco QQQ Trust Series 1 put Sold out 6,383,200 $3.9Bbefore exit UAL United Airlines Holdings Inc. call New 125,827 $1.2B DAL Delta Air Lines Inc. call New 73,399 $488.0M ALB Albemarle Corp. call Sold out 2,766,100 $391.2Mbefore exit IWM iShares Russell 2000 ETF put New 3,291 $81.6M EWY iShares MSCI South Korea ETF put New 1,750 $21.5M DXCM Dexcom Inc. call Sold out 284,000 $18.8Mbefore exit
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 66 $9.3B NTRA, WDC, LLY, SNDK, STX Q1 2026 44 $4.9B NTRA, FIX, EQIX, RTX, WMT Q4 2025 54 $7.0B C, NTRA, LLY, SHOP, CVNA Q3 2025 58 $6.6B VST, C, CVNA, APP, TLN Q2 2025 63 $6.8B VST, C, EQT, CVNA, WMB Q1 2025 34 $3.8B EQT, LLY, WMB, NTRA, SE Q4 2024 43 $4.7B UAL, VST, DAL, WMB, AMZN Q3 2024 35 $3.3B VST, CEG, GEV, UAL, TSLA Q2 2024 46 $2.9B AAPL, KMI, VST, CEG, AER Q1 2024 53 $2.8B VST, FCX, BAC, XBI, KMI