Quantum Capital Management portfolio
Concentrated managerInvestment firmPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 11, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Quantum Capital Management reported a $798M portfolio of 35 positions to the SEC as of the end of Q2 2026. Its largest positions are HEI/A, NVR, PRI. During the quarter it opened Pool and Vanguard S&P 500 ETF.
Sections with a free account
What changed this quarter
30 positions with a change (2 new, 15 added to, 12 trimmed, 1 sold). 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Old Dominion Freight Line−53%fewer sharesReduced9.4% → 4.8%
- Graco+55%more sharesIncreased5.4% → 7.3%
- Brown & Brown+41%more sharesIncreased5.4% → 7.3%
- Idexx Laboratories+49%more sharesIncreased4.0% → 5.5%
- Msci−21%fewer sharesReduced7.6% → 6.0%
- Primerica−14%fewer sharesReduced8.0% → 7.7%
- Heico+17%more sharesIncreased6.3% → 8.9%
- Booking Holdings−35%fewer sharesReduced3.4% → 2.3%
- Veeva Systems−14%fewer sharesReduced7.1% → 6.1%
- Pool+0.9 ppof portfolioNew— → 0.9%
- Gartner+53%more sharesIncreased2.0% → 2.4%
- Vanguard S&P 500 ETF+0.7 ppof portfolioNew— → 0.7%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- HeicoHEI/A8.9%
- NVRNVR8.3%
- PrimericaPRI7.7%
- GracoGGG7.3%
- Brown & BrownBRO7.3%
- Martin Marietta MaterialsMLM6.8%
- Veeva SystemsVEEV6.1%
- MSCIMSCI6.0%
- FastenalFAST5.8%
- Moody'sMCO5.7%
- Idexx LaboratoriesIDXX5.5%
- Old Dominion Freight LineODFL4.8%
- Tyler TechnologiesTYL3.9%
- GartnerIT2.4%
- Booking HoldingsBKNG2.3%
“Since”: first quarter of the current run, unbroken until today. In the details, prices are the quarter-end prices of the quarters in which it added shares, per the 13F. The manager may have bought at any price within each quarter; the SEC only publishes the value at quarter end.
Portfolio by sector
- ● Industrials 29%
- ● Financials 27%
- ● Health Care 12%
- ● Consumer Discretionary 11%
- ● Materials 8%
- ● No sector 7%
- ● Information Technology 6%
How its portfolio changed (8 quarters)
Q2 2026: 35
Q2 2026: 70%
Q2 2026: 11.7%
Traded turnover: the weight it bought plus the weight it sold in the quarter, divided by two, excluding price moves. The plain “turnover” in the header does include that effect. With a free account: the full history and sectors over time.
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Investment firm, per its Form ADV of Mar 26, 2026 (medium confidence).
The data, as reported: QUANTUM CAPITAL MANAGEMENT, LLC (CRD 111083): Institutional mandates; 5.D assets by client type: registered funds 40%, other advisers 28%, high net worth 24% (of $1.0 bn); 5.F 209 accounts, 0% non-discretionary; 5.D 133 clients, 132 individuals
The type comes from a rule applied to that data. If it looks wrong, tell us.
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