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Livermore
Livermore
ZHEN

Quantum Capital Management, LLC

SEC CIK
0001513125
Latest filing
Aug 11, 2026

The latest 13F from Quantum Capital Management, LLC covers Q2 2026 (filed Aug 11, 2026): 35 long positions worth $797.6M. The top 10 holdings make up 69.7% of the portfolio, and the largest is Heico Corp (HEI.A) at 8.9%. 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
3
Est. +$17.7M
Added
17
Est. +$74.3M
Reduced
12
Est. −$89.5M
Sold out
2
Est. −$5.36M

Top 5 holdings

Share of this quarter's portfolio value

  1. HEI.AHeico Corp
    8.9%$70.6MHistory
  2. NVRNVR Inc
    8.3%$66.0MHistory
  3. PRIPrimerica, Inc.
    7.7%$61.1MHistory
  4. GGGGraco Inc
    7.3%$58.1MHistory
  5. BROBrown & Brown, Inc.
    7.3%$57.9MHistory

Share of portfolio

Top 5 holdings and the other 30 positions, by share of portfolio value

  1. HEI.A8.9%
  2. NVR8.3%
  3. PRI7.7%
  4. GGG7.3%
  5. BRO7.3%
  6. Other 30 positions60.7%

Biggest buys

New and added positions, by estimated amount bought

  1. GGGGraco Inc
    +$20.6MAddedHistory
  2. BROBrown & Brown, Inc.
    +$16.8MAddedHistory
  3. IDXXIDEXX Laboratories Inc
    +$14.4MAddedHistory
  4. HEI.AHeico Corp
    +$10.1MAddedHistory
  5. POOLPool Corp
    +$7.03MNewHistory

Largest weight increases

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

  1. HEI.AHeico Corp
    +2.51 pp6.3% → 8.9%History
  2. GGGGraco Inc
    +1.92 pp5.4% → 7.3%History
  3. BROBrown & Brown, Inc.
    +1.91 pp5.4% → 7.3%History
  4. IDXXIDEXX Laboratories Inc
    +1.48 pp4.0% → 5.5%History
  5. POOLPool Corp
    +0.88 pp0.0% → 0.9%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. ODFLOld Dominion Freight Line, Inc.
    −$43.6MReducedHistory
  2. MSCIMSCI Inc.
    −$13.1MReducedHistory
  3. PRIPrimerica, Inc.
    −$10.2MReducedHistory
  4. BKNGBooking Holdings Inc.
    −$9.90MReducedConverted for a 25-for-1 splitHistory
  5. VEEVVeeva Systems Inc
    −$7.95MReducedHistory

Largest weight decreases

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

  1. ODFLOld Dominion Freight Line, Inc.
    −4.65 pp9.4% → 4.8%History
  2. MSCIMSCI Inc.
    −1.50 pp7.6% → 6.0%History
  3. TYLTyler Technologies Inc
    −1.38 pp5.3% → 3.9%History
  4. BKNGBooking Holdings Inc.
    −1.12 pp3.4% → 2.3%History
  5. VEEVVeeva Systems Inc
    −1.07 pp7.1% → 6.1%History

Metrics

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

Portfolio value
$797.6M
+$16.1M (+2.1%) vs. prior quarter
Positions
35
+1 vs. prior quarter
Top 10 concentration
69.7%
Top 10 as share of value
Turnover
11.7%
Q2 2026, one quarter
Average holding period
17.1 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 $967.1M (Q1 2025)

Q1 2021: $752.7MQ2 2021: $824.3MQ3 2021: $818.6MQ4 2021: $902.3MQ1 2022: $808.2MQ2 2022: $732.4MQ3 2022: $763.5MQ4 2022: $757.7MQ1 2023: $774.3MQ2 2023: $828.7MQ3 2023: $755.2MQ4 2023: $850.0MQ1 2024: $919.3MQ2 2024: $883.8MQ3 2024: $964.6MQ4 2024: $932.6MQ1 2025: $967.1MQ2 2025: $925.4MQ3 2025: $912.1MQ4 2025: $863.7MQ1 2026: $781.4MQ2 2026: $797.6M
Q1 2021Q2 2026
13F filings of Quantum Capital Management, LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 11, 202635$797.6MHEI.ANVRPRIvs. Q1 2026SEC
Q1 2026May 13, 202634$781.4MODFLNVRPRIvs. Q4 2025SEC
Q4 2025Feb 13, 202634$863.7MODFLHEI.APRIvs. Q3 2025SEC
Q3 2025Nov 13, 202533$912.1MVEEVODFLHEI.Avs. Q2 2025SEC
Q2 2025Aug 14, 202533$925.4MHEI.AVEEVNVRvs. Q1 2025SEC
Q1 2025May 14, 202533$967.1MVEEVODFLCPRTvs. Q4 2024SEC
Q4 2024Feb 12, 202531$932.6MODFLVEEVCPRTvs. Q3 2024SEC
Q3 2024Nov 13, 202432$964.6MODFLVEEVBKNGvs. Q2 2024SEC
Q2 2024Aug 13, 202431$883.8MODFLVEEVPRIvs. Q1 2024SEC
Q1 2024May 14, 202431$919.3MODFLVEEVHEI.Avs. Q4 2023SEC
Q4 2023Feb 12, 202432$850.0MBKNGCPRTHEI.Avs. Q3 2023SEC
Q3 2023Nov 14, 202328$755.2MBKNGODFLCPRTvs. Q2 2023SEC
Q2 2023Aug 10, 202326$828.7MODFLCPRTBKNGvs. Q1 2023SEC
Q1 2023May 11, 202326$774.3MBKNGODFLCPRTvs. Q4 2022SEC
Q4 2022Feb 10, 202326$757.7MODFLBKNGHEI.Avs. Q3 2022SEC
Q3 2022Nov 14, 202230$763.5MODFLHEI.ABKNGvs. Q2 2022SEC
Q2 2022Aug 11, 202231$732.4MODFLHEI.ACPRTvs. Q1 2022SEC
Q1 2022May 11, 202233$808.2MHEI.ABKNGNVRvs. Q4 2021SEC
Q4 2021Feb 14, 202233$902.3MNVRFirst Rep BK San Francisco CHEI.Avs. Q3 2021SEC
Q3 2021Nov 12, 202134$818.6MFirst Rep BK San Francisco CBKNGNVRvs. Q2 2021SEC
Q2 2021Aug 11, 202134$824.3MNVRCPRTHEI.Avs. Q1 2021SEC
Q1 2021May 13, 202135$752.7MNVRHEI.APRI–SEC