Harvey Partners portfolio
Investment firmPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 14, 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.
Harvey Partners reported a $1.4 bn portfolio of 46 companies (47 positions, counting each share class separately) to the SEC as of the end of Q2 2026. Its largest positions are NPO, MTRN, MKSI. During the quarter it opened Ceco Environmental and Cintas.
Sections with a free account
What changed this quarter
45 positions with a change (5 new, 14 added to, 24 trimmed, 2 sold); also, 1 entered through an IPO, 2 exited through an acquisition or merger. 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Newly listedApplied Aerospace & DefenseAADX0.5% of the portfolio
It started trading this quarter: it appears in a 13F for the first time. The filing does not say whether the manager already held it before the listing, so it is not counted as a purchase.
- MKS−42%fewer sharesReduced4.5% → 4.4%
- Adeia−41%fewer sharesReduced5.4% → 3.7%
- Ceco Environmental+2.0 ppof portfolioNew— → 2.0%
- Ichor Holdings−56%fewer sharesReduced1.8% → 1.6%
- Materion−25%fewer sharesReduced3.4% → 4.5%
- Nokia−51%fewer sharesReduced1.9% → 1.3%
- Cintas+1.3 ppof portfolioNew— → 1.3%
- Vishay Precision Group−56%fewer sharesReduced1.4% → 1.8%
- Enpro−18%fewer sharesReduced5.2% → 5.4%
- SiteOne Landscape Supply+1.1 ppof portfolioNew— → 1.1%
- Albany International+1.1 ppof portfolioNew— → 1.1%
- Palo Alto Networks−47%fewer sharesReduced1.2% → 1.1%
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
- EnproNPO5.4%
- MaterionMTRN4.5%
- MKSMKSI4.4%
- IngevityNGVT3.8%
- AdeiaADEA3.7%
- LittelfuseLFUS3.6%
- Martin Marietta MaterialsMLM3.5%
- AZZAZZ3.5%
- Waste ConnectionsWCN3.3%
- NovantaNOVT3.3%
- BWX TechnologiesBWXT3.3%
- GenthermTHRM3.1%
- BrightView HoldingsBV3.0%
- Astec IndustriesASTE2.9%
- BALLBALL2.8%
“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 28%
- ● Materials 25%
- ● Information Technology 24%
- ● Communication Services 11%
- ● Consumer Discretionary 8%
- ● Consumer Staples 3%
- ● No sector 1%
How its portfolio changed (8 quarters)
Q2 2026: 47
Q2 2026: 39%
Q2 2026: 14.7%
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.
Declared options (1)
Besides stocks, Harvey Partners declared 1 put (they gain if the stock falls) with a notional of $18.0M. The 13F reports the value of the underlying shares, not the premium paid, so these figures look large and are not added to the portfolio. Nor does it say whether the option is bought or written, or its strike or expiry: it may be a hedge.
- PUTiShares Russell 2000 ETFIWM$18.0M
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 25, 2026 (medium confidence).
The data, as reported: HARVEY PARTNERS, LLC (CRD 160681): Institutional mandates; 5.D assets by client type: pension plans 87%, pooled vehicles 12% (of $1.2 bn); 5.F 16 accounts, 0% non-discretionary; 5.D 16 clients, 8 individuals
The type comes from a rule applied to that data. If it looks wrong, tell us.
Not counted as a concentrated manager: its top 10 positions are under 45%. Its portfolio is shown all the same, but it is left out of manager counts, the consensus and the ranking. How this is decided
Similar managers by type and size
Same type of filer and a 13F portfolio value between a third and three times this one. It is not a comparison of what they hold.
- Weitz Investment ManagementInvestment firm · $1.4 bn
- Bristol Gate Capital PartnersInvestment firm · $1.4 bn
- Clean Energy Transition LLPInvestment firm · $1.4 bn
- Soma Equity PartnersInvestment firm · $1.4 bn
- Blue Grotto CapitalInvestment firm · $1.5 bn
- Park West Asset ManagementInvestment firm · $1.5 bn