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Livermore
Livermore
ZHEN

Carderock Capital Management Inc

SEC CIK
0001168889
Latest filing
Jul 7, 2026

The latest 13F from Carderock Capital Management Inc covers Q2 2026 (filed Jul 7, 2026): 67 long positions worth $455.8M. The top 10 holdings make up 37.4% of the portfolio, and the largest is Lam Research Corp (LRCX) at 7.0%. Livermore has 23 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
3
Est. +$10.4M
Added
25
Est. +$19.1M
Reduced
28
Est. −$36.4M
Sold out
9
Est. −$5.01M

Top 5 holdings

Share of this quarter's portfolio value

  1. LRCXLam Research Corp
    7.0%$32.0MHistory
  2. GOOGLAlphabet Inc.
    4.4%$20.2MHistory
  3. APHAmphenol Corp
    4.1%$18.8MHistory
  4. LLYEli Lilly & Co
    3.4%$15.4MHistory
  5. AAPLApple Inc.
    3.3%$15.0MHistory

Share of portfolio

Top 5 holdings and the other 62 positions, by share of portfolio value

  1. LRCX7.0%
  2. GOOGL4.4%
  3. APH4.1%
  4. LLY3.4%
  5. AAPL3.3%
  6. Other 62 positions77.8%

Biggest buys

New and added positions, by estimated amount bought

  1. FSSFederal Signal Corp
    +$5.21MAddedHistory
  2. ETNEaton Corp plc
    +$3.90MNewHistory
  3. AJGArthur J. Gallagher & Co.
    +$3.75MNewHistory
  4. WSOWatsco Inc
    +$3.28MAddedHistory
  5. WATWaters Corp
    +$2.78MNewHistory

Largest weight increases

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

  1. FTNTFortinet, Inc.
    +1.24 pp1.8% → 3.1%History
  2. FSSFederal Signal Corp
    +1.19 pp0.9% → 2.1%History
  3. ETNEaton Corp plc
    +0.86 pp0.0% → 0.9%History
  4. AJGArthur J. Gallagher & Co.
    +0.82 pp0.0% → 0.8%History
  5. WSOWatsco Inc
    +0.73 pp0.3% → 1.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. LRCXLam Research Corp
    −$9.53MReducedHistory
  2. DHRDanaher Corp
    −$4.64MReducedHistory
  3. INTUIntuit Inc.
    −$3.18MReducedHistory
  4. LDOSLeidos Holdings, Inc.
    −$3.06MReducedHistory
  5. FICOFair Isaac Corp
    −$2.92MSold outHistory

Largest weight decreases

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

  1. INTUIntuit Inc.
    −1.47 pp1.7% → 0.2%History
  2. LDOSLeidos Holdings, Inc.
    −1.24 pp1.4% → 0.1%History
  3. DHRDanaher Corp
    −1.15 pp1.2% → <0.1%History
  4. SPGIS&P Global Inc.
    −0.91 pp2.4% → 1.5%History
  5. FICOFair Isaac Corp
    −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
$455.8M
+$51.0M (+12.6%) vs. prior quarter
Positions
67
−6 vs. prior quarter
Top 10 concentration
37.4%
Top 10 as share of value
Turnover
6.9%
Q2 2026, one quarter
Average holding period
15.3 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 $455.8M (Q2 2026)

Q1 2021: $334.7MQ2 2021: $364.7MQ3 2021: $354.9MQ4 2021: $416.4MQ1 2022: $309.7MQ2 2022: $239.4MQ3 2022: $195.9MQ4 2022: $241.1MQ1 2023: $286.9MQ2 2023: $322.5MQ3 2023: $298.0MQ4 2023: $362.1MQ1 2024: $356.8MQ2 2024: $382.2MQ3 2024: $423.6MQ4 2024: $398.7MQ1 2025: $377.3MQ2 2025: $390.4MQ3 2025: $411.3MQ4 2025: $412.7MQ1 2026: $404.8MQ2 2026: $455.8M
Q1 2021Q2 2026
13F filings of Carderock Capital Management Inc by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 7, 202667$455.8MLRCXGOOGLAPHvs. Q1 2026SEC
Q1 2026Apr 10, 202673$404.8MLRCXGOOGLAPHvs. Q4 2025SEC
Q4 2025Jan 9, 202669$412.7MGOOGLLRCXAPHvs. Q3 2025SEC
Q3 2025Oct 17, 202572$411.3MAPHLRCXMSFTvs. Q2 2025SEC
Q2 2025Jul 10, 2025139$390.4MAPHMSFTHEIvs. Q1 2025SEC
Q1 2025May 27, 202570$377.3MMAAAPLISRGvs. Q4 2024SEC
Q4 2024Jan 15, 202573$398.7MAAPLMSFTMAvs. Q3 2024SEC
Q3 2024Oct 16, 202473$423.6MAAPLMSFTCTASvs. Q2 2024SEC
Q2 2024Jul 22, 202469$382.2MMSFTAAPLGOOGLvs. Q1 2024SEC
Q1 2024Apr 23, 202468$356.8MMSFTMAPHvs. Q4 2023SEC
Q4 2023Jan 23, 202461$362.1MAAPLMAMSFTvs. Q3 2023SEC
Q3 2023Oct 23, 202357$298.0MAAPLMAMSFTvs. Q2 2023SEC
Q2 2023Jul 25, 202358$322.5MAAPLMAMSFTvs. Q1 2023SEC
Q1 2023Apr 19, 2023125$286.9MAAPLMAMSFTvs. Q4 2022SEC
Q4 2022Jan 20, 202364$241.1MAAPLMATMOvs. Q3 2022SEC
Q3 2022Nov 4, 2022Amended65$195.9MAAPLTMOGOOGLvs. Q2 2022SEC
Q2 2022Jul 21, 202267$239.4MAAPLGOOGLTMOvs. Q1 2022SEC
Q1 2022Apr 28, 202272$309.7MAAPLMSFTTMOvs. Q4 2021SEC
Q4 2021Jan 31, 202280$416.4MAAPLMSFTACNvs. Q3 2021SEC
Q3 2021Oct 29, 2021154$354.9MAAPLMSFTINTUvs. Q2 2021SEC
Q2 2021Jul 30, 202179$364.7MAAPLTSMACNvs. Q1 2021SEC
Q1 2021May 7, 202178$334.7MAAPLTSMACN–SEC