In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 14, 2025), Harvey Partners, LLC reported 41 stock positions worth $887.1 million . Its top holding was Azz (AZZ) at 6.3% of the portfolio, followed by Waste Connections (WCN, 5.3% ) and Adeia (ADEA, 4.9% ). Compared with Q3 2024, it opened 5 new positions, sold out of 6, added to 25 and reduced 9. The biggest buy was a new position in Calix (CALX) and the biggest sale an exit from Huntington Ingalls Industrie (HII).
Location Tarrytown, NY
CIK 0001406484
Portfolio Value $887.1M (Q4 2024) Holdings 41 stocks · $887.1M Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q3 2024 AZZ Azz Inc. 681,000 $55.8M Add +2.3% WCN Waste Connections Inc. 274,000 $47.0M Add +8.5% ADEA Adeia Inc. 3,120,000 $43.6M Add +2.2% GLDD Great Lakes Dredge & Dock Co. 3,704,000 $41.8M Add +1.6% RTO Rentokil Initial PLC-SP ADR 1,627,500 $41.2M Add +13.8% SUM Summit Materials Inc. Class A 808,000 $40.9M Add +0.2% BWXT BWX Technologies Inc. 353,000 $39.3M Reduce -13.5% NPO Enpro Inc. 217,500 $37.5M Add +2.4% BV Brightview Holdings Inc. 1,946,000 $31.1M Add +4.1% AWI Armstrong World Industries 213,500 $30.2M Reduce -7.4% OEC Orion SA 1,807,500 $28.5M Add +6.6% LFUS Littelfuse Inc. 120,000 $28.3M Reduce -9.4% VMEO Vimeo Inc. 4,210,000 $26.9M Add +4.3% FARO Faro Technologies Inc. 1,029,500 $26.1M Add +2.3% BATRK Atlanta Braves Holdings in-C 592,500 $22.7M Add +16.9% VRNS Varonis Systems Inc. 501,000 $22.3M Reduce -13.9% THR Thermon Group Holdings Inc. 765,000 $22.0M Reduce -9.0% CHKP Check Point Software Tech 109,500 $20.4M Add +25.5% MKSI MKS Inc. filed as MKS INSTRS INC 189,500 $19.8M Add +11.5% LASR Nlight Inc. 1,775,000 $18.6M Add +2.3% MRC MRC Global Inc. 1,444,000 $18.5M Add +9.1% MTRX Matrix Service Co. 1,522,000 $18.2M Add +0.5% CTS CTS Corp. 322,500 $17.0M Reduce -7.1% ULS Ul Solutions Inc. Class A 312,900 $15.6M Add +19.7% MANU Manchester United PLC Class A 871,500 $15.1M Add +17.8% CALX Calix Inc. 425,000 $14.8M New DY Dycom Industries Inc. 85,000 $14.8M New THRM Gentherm Inc. 349,000 $13.9M New NGVT Ingevity Corp. 324,000 $13.2M Add +60.4% CYBR Cyberark Software Ltd./Israel 39,000 $13.0M Add +3.3% MLM Martin Marietta Materials 24,500 $12.7M Add +44.1% ENTG Entegris Inc. 121,000 $12.0M New RSKD Riskified Ltd. Class A 2,432,500 $11.5M Reduce -24.6% SEE Sealed Air Corp. 329,500 $11.1M Add +2.5% SWI Solarwinds Corp. 739,000 $10.5M Add +392.7% ASTE Astec Industries Inc. 289,000 $9.7M Add +2.5% VPG Vishay Precision Group 399,000 $9.4M No change HBIO Harvard Bioscience Inc. 2,683,000 $5.7M Reduce -1.2% CPRT Copart Inc. 44,000 $2.5M Reduce -75.6% APLD Applied Digital Corp. 250,000 $1.9M No change SSTI Soundthinking Inc. 142,000 $1.9M New
Options reported separately and not counted above: SPY puts ($13.3M).
Portfolio Sells Q3 2024 → Q4 2024 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q3 2024 % Of Portfolio Change To Portfolio ▲ HII Huntington Ingalls Industrie Sold out 0.00% −3.28 MCHP Microchip Technology Inc. Sold out 0.00% −2.36 SPB Spectrum Brands Holdings Inc. Sold out 0.00% −2.28 VRNS Varonis Systems Inc. Reduce -13.9% 2.51% −1.27 GTLS Chart Industries Inc. Sold out 0.00% −1.16 LFUS Littelfuse Inc. Reduce -9.4% 3.19% −0.85 CPRT Copart Inc. Reduce -75.6% 0.28% −0.80 BWXT BWX Technologies Inc. Reduce -13.5% 4.43% −0.67 RSKD Riskified Ltd. Class A Reduce -24.6% 1.30% −0.46 THR Thermon Group Holdings Inc. Reduce -9.0% 2.48% −0.41 HBIO Harvard Bioscience Inc. Reduce -1.2% 0.64% −0.20 OS Onestream Inc. Sold out 0.00% −0.17 AWI Armstrong World Industries Reduce -7.4% 3.40% −0.08 DRVN Driven Brands Holdings Inc. Sold out 0.00% −0.04 CTS CTS Corp. Reduce -7.1% 1.92% −0.01
Portfolio Buys Q3 2024 → Q4 2024 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q3 2024 % Of Portfolio Change To Portfolio ▼ CALX Calix Inc. New 1.67% +1.67 DY Dycom Industries Inc. New 1.67% +1.67 THRM Gentherm Inc. New 1.57% +1.57 ENTG Entegris Inc. New 1.35% +1.35 SUM Summit Materials Inc. Class A Add +0.2% 4.61% +0.99 SWI Solarwinds Corp. Add +392.7% 1.19% +0.96 ADEA Adeia Inc. Add +2.2% 4.92% +0.74 FARO Faro Technologies Inc. Add +2.3% 2.94% +0.73 VMEO Vimeo Inc. Add +4.3% 3.04% +0.69 NGVT Ingevity Corp. Add +60.4% 1.49% +0.58 RTO Rentokil Initial PLC-SP ADR Add +13.8% 4.65% +0.55 MLM Martin Marietta Materials Add +44.1% 1.43% +0.37 CHKP Check Point Software Tech Add +25.5% 2.30% +0.37 MANU Manchester United PLC Class A Add +17.8% 1.70% +0.33 GLDD Great Lakes Dredge & Dock Co. Add +1.6% 4.71% +0.30 ULS Ul Solutions Inc. Class A Add +19.7% 1.76% +0.28 NPO Enpro Inc. Add +2.4% 4.23% +0.26 BATRK Atlanta Braves Holdings in-C Add +16.9% 2.56% +0.23 SSTI Soundthinking Inc. New 0.21% +0.21 CYBR Cyberark Software Ltd./Israel Add +3.3% 1.46% +0.20 MRC MRC Global Inc. Add +9.1% 2.08% +0.14 BV Brightview Holdings Inc. Add +4.1% 3.51% +0.12 WCN Waste Connections Inc. Add +8.5% 5.30% +0.11 MKSI MKS Inc. Add +11.5% 2.23% +0.10 ASTE Astec Industries Inc. Add +2.5% 1.09% +0.06 MTRX Matrix Service Co. Add +0.5% 2.05% +0.04 LASR Nlight Inc. Add +2.3% 2.10% −0.03 AZZ Azz Inc. Add +2.3% 6.29% −0.04 SEE Sealed Air Corp. Add +2.5% 1.26% −0.09 OEC Orion SA Add +6.6% 3.22% −0.26
Options Activity Q3 2024 → Q4 2024 Security Type Change vs Q3 2024 Underlying Shares Value ▼ SPY SS SPDR S&P 500 ETF Trust-US put New 22,700 $13.3M IWM iShares Russell 2000 ETF put Sold out 40,000 $8.8Mbefore exit
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 47 $1.4B NPO, MTRN, MKSI, NGVT, ADEA Q1 2026 45 $1.2B ADEA, NPO, MKSI, NGVT, BWXT Q4 2025 43 $1.1B NPO, GLDD, MKSI, ADEA, LASR Q3 2025 44 $1.1B NPO, BWXT, AZZ, GLDD, ADEA Q2 2025 41 $1.0B AZZ, WCN, BWXT, BV, NPO Q1 2025 41 $843.4M WCN, AZZ, ADEA, RTO, NPO Q4 2024 41 $887.1M AZZ, WCN, ADEA, GLDD, RTO Q3 2024 42 $869.5M AZZ, WCN, BWXT, GLDD, ADEA Q2 2024 39 $808.6M AZZ, WCN, BWXT, HII, OEC Q1 2024 40 $921.9M AZZ, BWXT, HII, VRNS, OEC