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Livermore
Livermore
ZHEN

Castle Hook Partners LP

SEC CIK
0001687241
Latest filing
Aug 14, 2026

The latest 13F from Castle Hook Partners LP covers Q2 2026 (filed Aug 14, 2026): 66 long positions worth $9.33B. The top 10 holdings make up 48.7% of the portfolio, and the largest is Natera, Inc. (NTRA) at 7.6%. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
35
Est. +$2.65B
Added
16
Est. +$2.03B
Reduced
13
Est. −$1.14B
Sold out
13
Est. −$985.7M

Top 5 holdings

Share of this quarter's portfolio value

  1. NTRANatera, Inc.
    7.6%$704.8MHistory
  2. WDCWestern Digital Corp
    6.2%$577.0MHistory
  3. LLYEli Lilly & Co
    6.0%$558.0MHistory
  4. SNDKSandisk Corp
    5.8%$540.2MHistory
  5. STXSeagate Technology Holdings plc
    5.6%$527.2MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. LLYEli Lilly & Co
    +$558.0MNewHistory
  2. AMZNAmazon Com Inc
    +$303.5MAddedHistory
  3. DHRDanaher Corp
    +$237.2MAddedHistory
  4. VIKViking Holdings Ltd
    +$228.2MAddedHistory
  5. WWayfair Inc.
    +$224.6MAddedHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. LLYEli Lilly & Co
    +5.98 pp0.0% → 6.0%History
  2. AMZNAmazon Com Inc
    +3.23 pp<0.1% → 3.3%History
  3. WWayfair Inc.
    +2.39 pp<0.1% → 2.4%History
  4. VIKViking Holdings Ltd
    +2.21 pp0.9% → 3.2%History
  5. CRDOCredo Technology Group Holding Ltd
    +2.17 pp0.0% → 2.2%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. RTXRTX Corp
    −$248.2MSold outHistory
  2. LHXL3HARRIS Technologies, Inc.
    −$232.7MSold outHistory
  3. FIXComfort Systems USA Inc
    −$218.9MReducedHistory
  4. WMTWalmart Inc.
    −$174.1MReducedHistory
  5. EQIXEquinix Inc
    −$171.5MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. RTXRTX Corp
    −5.02 pp5.0% → 0.0%History
  2. LHXL3HARRIS Technologies, Inc.
    −4.70 pp4.7% → 0.0%History
  3. WMTWalmart Inc.
    −4.41 pp4.9% → 0.5%History
  4. EQIXEquinix Inc
    −4.12 pp5.2% → 1.1%History
  5. FIXComfort Systems USA Inc
    −3.73 pp5.8% → 2.1%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$9.33B
+$4.39B (+88.6%) vs. prior quarter
Positions
66
+22 vs. prior quarter
Top 10 concentration
48.7%
Top 10 as share of value
Turnover
29.8%
Q2 2026, one quarter
Average holding period
3.3 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $9.33B (Q2 2026)

Q1 2021: $1.07BQ2 2021: $1.24BQ3 2021: $1.41BQ4 2021: $871.9MQ1 2022: $1.03BQ2 2022: $585.0MQ3 2022: $629.9MQ4 2022: $906.7MQ1 2023: $1.03BQ2 2023: $1.07BQ3 2023: $1.49BQ4 2023: $1.60BQ1 2024: $2.77BQ2 2024: $2.89BQ3 2024: $3.34BQ4 2024: $4.70BQ1 2025: $3.80BQ2 2025: $6.80BQ3 2025: $6.61BQ4 2025: $6.95BQ1 2026: $4.95BQ2 2026: $9.33B
Q1 2021Q2 2026
13F filings of Castle Hook Partners LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202666$9.33BNTRAWDCLLYvs. Q1 2026SEC
Q1 2026May 15, 202644$4.95BNTRAFIXEQIXvs. Q4 2025SEC
Q4 2025Feb 17, 202654$6.95BCNTRALLYvs. Q3 2025SEC
Q3 2025Nov 14, 202558$6.61BVSTCCVNAvs. Q2 2025SEC
Q2 2025Aug 14, 202563$6.80BVSTCEQTvs. Q1 2025SEC
Q1 2025May 15, 202534$3.80BEQTLLYWMBvs. Q4 2024SEC
Q4 2024Feb 14, 202543$4.70BUALVSTDALvs. Q3 2024SEC
Q3 2024Nov 14, 202435$3.34BVSTCEGGEVvs. Q2 2024SEC
Q2 2024Aug 14, 202446$2.89BAAPLKMIVSTvs. Q1 2024SEC
Q1 2024May 13, 202453$2.77BVSTFCXBACvs. Q4 2023SEC
Q4 2023Feb 13, 202444$1.60BAMZNState Street SPDR S&P Biotech ETFState Street SPDR S&P Regional Banking ETFvs. Q3 2023SEC
Q3 2023Nov 13, 202339$1.49BTECKXOMHUMvs. Q2 2023SEC
Q2 2023Aug 11, 202331$1.07BTECKNFLXMETAvs. Q1 2023SEC
Q1 2023May 12, 202328$1.03BTECKMETAHUMvs. Q4 2022SEC
Q4 2022Feb 10, 202341$906.7MTECKHUMFCXvs. Q3 2022SEC
Q3 2022Nov 14, 202246$629.9MTECKEXEARvs. Q2 2022SEC
Q2 2022Aug 12, 202242$585.0MTECKPSXDBX ETF Trvs. Q1 2022SEC
Q1 2022May 13, 202256$1.03BTECKCOPHLTvs. Q4 2021SEC
Q4 2021Feb 11, 202262$871.9MTECKCFMTvs. Q3 2021SEC
Q3 2021Nov 12, 202175$1.41BTECKMSFTGOOGvs. Q2 2021SEC
Q2 2021Aug 13, 202167$1.24BAMZNTECKCFvs. Q1 2021SEC
Q1 2021May 14, 202174$1.07BCFTECKUBER–SEC