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Livermore
Livermore
ZHEN

CenterBook Partners LP

SEC CIK
0001872738
Latest filing
Aug 11, 2026

The latest 13F from CenterBook Partners LP covers Q2 2026 (filed Aug 11, 2026): 693 long positions worth $2.04B. The top 10 holdings make up 18.1% of the portfolio, and the largest is Amazon Com Inc (AMZN) at 2.5%. Livermore has 19 filings on Form 13F from this institution, going back to Q4 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
280
Est. +$457.4M
Added
169
Est. +$460.4M
Reduced
244
Est. −$893.5M
Sold out
215
Est. −$285.5M

Top 5 holdings

Share of this quarter's portfolio value

  1. AMZNAmazon Com Inc
    2.5%$50.0MHistory
  2. GOOGLAlphabet Inc.
    2.2%$45.8MHistory
  3. METAMeta Platforms, Inc.
    2.1%$42.7MHistory
  4. MSFTMicrosoft Corp
    1.9%$39.1MHistory
  5. NVDANVIDIA Corp
    1.8%$35.7MHistory

Share of portfolio

Top 5 holdings and the other 688 positions, by share of portfolio value

  1. AMZN2.5%
  2. GOOGL2.2%
  3. META2.1%
  4. MSFT1.9%
  5. NVDA1.8%
  6. Other 688 positions89.5%

Biggest buys

New and added positions, by estimated amount bought

  1. MAMastercard Inc
    +$26.3MNewHistory
  2. NFLXNetflix Inc
    +$23.9MAddedHistory
  3. SPCXSpace Exploration Technologies Corp
    +$20.7MNewHistory
  4. LITELumentum Holdings Inc.
    +$20.3MAddedHistory
  5. TXNTexas Instruments Inc
    +$18.8MAddedHistory

Largest weight increases

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

  1. MAMastercard Inc
    +1.29 pp0.0% → 1.3%History
  2. NFLXNetflix Inc
    +1.14 pp0.1% → 1.2%History
  3. TXNTexas Instruments Inc
    +1.09 pp0.4% → 1.5%History
  4. SPCXSpace Exploration Technologies Corp
    +1.01 pp0.0% → 1.0%History
  5. LITELumentum Holdings Inc.
    +1.00 pp0.1% → 1.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. AMATApplied Materials Inc
    −$39.3MReducedHistory
  2. AMDAdvanced Micro Devices Inc
    −$32.4MReducedHistory
  3. FCELFuelcell Energy Inc
    −$31.6MReducedHistory
  4. XMTRXometry, Inc.
    −$26.1MReducedHistory
  5. APHAmphenol Corp
    −$26.0MReducedHistory

Largest weight decreases

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

  1. APHAmphenol Corp
    −0.99 pp1.0% → <0.1%History
  2. AMATApplied Materials Inc
    −0.85 pp1.2% → 0.3%History
  3. MDBMongoDB, Inc.
    −0.84 pp0.9% → <0.1%History
  4. PMPhilip Morris International Inc.
    −0.78 pp0.8% → <0.1%History
  5. HDHome Depot, Inc.
    −0.72 pp0.7% → 0.0%History

Metrics

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

Portfolio value
$2.04B
+$174.2M (+9.4%) vs. prior quarter
Positions
693
+65 vs. prior quarter
Top 10 concentration
18.1%
Top 10 as share of value
Turnover
47.1%
Q2 2026, one quarter
Average holding period
6.0 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 (Q4 2021), so positions held before then are understated.

13F filings by quarter

19 quarters, going back to Q4 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $2.05B (Q4 2025)

Q4 2021: $170.3MQ1 2022: $280.9MQ2 2022: $467.0MQ3 2022: $518.4MQ4 2022: $607.1MQ1 2023: $707.3MQ2 2023: $799.6MQ3 2023: $801.9MQ4 2023: $819.8MQ1 2024: $1.45BQ2 2024: $1.61BQ3 2024: $1.63BQ4 2024: $1.67BQ1 2025: $1.57BQ2 2025: $1.80BQ3 2025: $2.02BQ4 2025: $2.05BQ1 2026: $1.86BQ2 2026: $2.04B
Q4 2021Q2 2026
13F filings of CenterBook Partners LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 11, 2026693$2.04BAMZNGOOGLMETAvs. Q1 2026SEC
Q1 2026May 5, 2026628$1.86BMSFTGOOGLAMZNvs. Q4 2025SEC
Q4 2025Feb 11, 2026541$2.05BMSFTAMZNMETAvs. Q3 2025SEC
Q3 2025Nov 7, 2025544$2.02BAMZNMETAVvs. Q2 2025SEC
Q2 2025Aug 12, 2025493$1.80BMSFTAMZNVvs. Q1 2025SEC
Q1 2025May 9, 2025466$1.57BMSFTVAMZNvs. Q4 2024SEC
Q4 2024Feb 13, 2025466$1.67BMSFTBRK.BAMZNvs. Q3 2024SEC
Q3 2024Nov 14, 2024441$1.63BGOOGLMSFTAMZNvs. Q2 2024SEC
Q2 2024Aug 12, 2024388$1.61BAMZNEQXTDWvs. Q1 2024SEC
Q1 2024May 10, 2024373$1.45BGOOGLAMZNSBUXvs. Q4 2023SEC
Q4 2023Feb 13, 2024378$819.8MAMZNTCVSvs. Q3 2023SEC
Q3 2023Nov 13, 2023413$801.9MAMZNGOOGLVZvs. Q2 2023SEC
Q2 2023Aug 14, 2023403$799.6MDGNEWRAMTvs. Q1 2023SEC
Q1 2023May 15, 2023380$707.3MAMZNGOOGLAMTvs. Q4 2022SEC
Q4 2022Feb 13, 2023370$607.1MGOOGLMETANFLXvs. Q3 2022SEC
Q3 2022Nov 14, 2022387$518.4MGOOGLVBNSvs. Q2 2022SEC
Q2 2022Aug 15, 2022378$467.0MAMZNGOOGLAMTvs. Q1 2022SEC
Q1 2022May 16, 2022339$280.9MAMTGOOGLADBEvs. Q4 2021SEC
Q4 2021Feb 11, 2022278$170.3MOPTUGOOGLAMZN–SEC