Q2 2026 13F · SEC CIK 1406484

Harvey Partners, LLC

Institutional asset managerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $1.4B
Reported positions: 47
Top holdings a year, 3 yrs: +22.6%
Assets under management: $1.2B

Harvey Partners, LLC is an institutional asset manager that reported 47 positions worth $1.4B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Enpro Inc (NPO, 5.4%), Materion Corp (MTRN, 4.5%), Mks Inc. (MKSI, 4.4%). A portfolio copying its top holdings returned 22.6% a year over the last 3 years, against 20.4% for the S&P 500.

Harvey Partners, LLC holdings all 47 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Harvey Partners, LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
NPOEnpro Inc	5.4%	5.2%	207,593	-18.1%	$78.2M
MTRNMaterion Corp	4.5%	3.4%	220,068	-24.9%	$65.4M
MKSIMks Inc.	4.4%	4.5%	141,066	-42.0%	$62.7M
NGVTIngevity Corp	3.8%	4.3%	734,307	-1.2%	$54.8M
ADEAAdeia Inc	3.7%	5.4%	1,622,353	-41.1%	$53.4M
LFUSLittelfuse Inc	3.6%	3.3%	112,547	-7.4%	$51.2M
MLMMartin Marietta Matls Inc	3.5%	3.1%	87,035	+36.2%	$50.2M
AZZAzz Inc	3.5%	3.6%	323,137	-8.1%	$50.1M
WCNWaste Connections Inc	3.3%	3.4%	287,122	+11.1%	$47.9M
NOVTNovanta Inc	3.3%	3.1%	294,122	-8.1%	$47.7M
BWXTBwx Technologies Inc	3.3%	4.2%	243,107	-4.8%	$47.3M
THRMGentherm Inc	3.1%	2.8%	1,326,075	+7.5%	$45.2M
BVBrightview Hldgs Inc	3.0%	2.8%	3,078,797	+4.8%	$43.6M
ASTEAstec Inds Inc	2.9%	2.9%	674,000	+0.3%	$41.2M
BALLBall Corp	2.8%	2.7%	653,286	+16.7%	$40.8M
BATRKAtlanta Braves Hldgs Inc	2.7%	2.8%	756,832	-6.1%	$39.3M
POOLPool Corp	2.6%	2.2%	174,074	+28.9%	$37.4M
SMGScotts Miracle-Gro Co Cl A	2.6%	2.2%	542,727	+24.1%	$37.0M
CTSCts Corp	2.5%	2.3%	545,231	-8.3%	$35.5M
AWIArmstrong World Inds Inc New	2.3%	2.6%	205,087	+4.6%	$32.9M
ULSUl Solutions Inc	2.3%	2.4%	320,656	-6.4%	$32.7M
CWSTCasella Waste Sys Inc	2.1%	1.8%	310,131	+10.2%	$30.1M
CECOCeco Environmental Corp	2.0%	New	311,132	—	$28.2M
RTORentokil Initial PLC	2.0%	2.5%	983,956	+0.9%	$28.2M
VPGVishay Precision Group Inc	1.8%	1.4%	177,659	-55.8%	$26.6M
MANUManchester Uni-A	1.8%	1.7%	1,127,547	-7.0%	$25.9M
KNKnowles Corp	1.8%	1.4%	613,805	-7.6%	$25.5M
ICHRIchor Holdings	1.6%	1.8%	205,874	-56.1%	$23.1M
BCPCBalchem Corp	1.6%	1.6%	136,057	+18.5%	$23.0M
LASRNlight Inc	1.5%	1.9%	302,711	-26.8%	$21.1M
NOKNokia Corp	1.3%	1.9%	1,454,626	-50.6%	$19.3M
CTASCintas Corp	1.3%	New	111,547	—	$19.0M
FWONKLiberty Media Corp Del	1.1%	0.9%	174,000	+40.9%	$16.6M
SITESiteone Landscape Supply Inc	1.1%	New	144,059	—	$16.5M
PANWPalo Alto Networks Inc	1.1%	1.2%	48,000	-47.3%	$16.4M
AINAlbany Intl Corp	1.1%	New	218,090	—	$16.2M
RSKDRiskified Ltd	1.1%	1.1%	3,165,547	-6.8%	$16.0M
CALXCalix Inc	1.1%	2.3%	420,500	-26.6%	$15.7M
WHWyndham Hotels & Resorts Inc	0.9%	0.8%	157,567	+30.2%	$13.3M
SPYState Str Spdr S&p 500 ETF T	0.8%	0.7%	15,000	+15.4%	$11.2M
MTRXMatrix Svc Co	0.8%	0.8%	815,023	-9.9%	$11.2M
FNDFloor & Decor Hldgs Inc	0.6%	New	155,566	—	$9.2M
FWONALiberty Media Corp Del	0.6%	0.4%	102,119	+70.2%	$8.9M
OECOrion S.a.	0.5%	0.7%	1,190,579	-8.7%	$7.9M
AADXApplied Aerospace & Defense	0.5%	New	329,178	—	$7.5M
APLDApplied Digital Corp	0.4%	0.3%	150,000	+0.0%	$5.6M
CHKPCheck Point Software Tech Lt	0.4%	1.3%	41,500	-62.1%	$5.5M

What Harvey Partners, LLC bought and sold in Q2 2026, against Q1 2026.

Share counts compared with the Q1 2026 13F; a split also changes share counts.

How the holdings did against the S&P 500.

1 year: +38.1% /yr; S&P 500 +20.1%
3 years: +22.6% /yr; S&P 500 +20.4%
5 years: +9.1% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$1.4B	47
Q1 2026	$1.2B	45
Q4 2025	$1.1B	43
Q3 2025	$1.1B	44
Q2 2025	$1.0B	41
Q1 2025	$843.4M	41
Q4 2024	$887.1M	41
Q3 2024	$869.5M	42
Q2 2024	$808.6M	39
Q1 2024	$921.9M	40
Q4 2023	$856.6M	42
Q3 2023	$778.9M	40

Questions about Harvey Partners, LLC's portfolio

What stocks does Harvey Partners, LLC own?

Harvey Partners, LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 47 positions worth $1.4B. The largest are Enpro Inc (NPO) at 5.4%, Materion Corp (MTRN) at 4.5%, Mks Inc. (MKSI) at 4.4%, Ingevity Corp (NGVT) at 3.8% and Adeia Inc (ADEA) at 3.7%.

What did Harvey Partners, LLC buy last quarter?

In Q2 2026, Harvey Partners, LLC added a new position in Ceco Environmental Corp (CECO), a new position in Cintas Corp (CTAS), a new position in Siteone Landscape Supply Inc (SITE), a new position in Albany Intl Corp (AIN), a new position in Floor & Decor Hldgs Inc (FND), Liberty Media Corp Del (FWONA) (+70.2% shares), Liberty Media Corp Del (FWONK) (+40.9% shares) and Martin Marietta Matls Inc (MLM) (+36.2% shares), compared with its Q1 2026 filing.

What did Harvey Partners, LLC sell last quarter?

In Q2 2026, Harvey Partners, LLC sold all of Thermon Group Hldgs Inc (THR), sold all of Great Lakes Dredge & Dock Co (GLDD), sold all of Dnow Inc (DNOW) (DNOW), sold all of Varonis Sys Inc (VRNS), Check Point Software Tech Lt (CHKP) (-62.1% shares), Ichor Holdings (ICHR) (-56.1% shares) and Vishay Precision Group Inc (VPG) (-55.8% shares), compared with its Q1 2026 filing.

How has Harvey Partners, LLC's portfolio performed?

A portfolio copying Harvey Partners, LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +22.6% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +38.1% against +20.1%. Over 5 years: +9.1% a year against +11.6%.

When is Harvey Partners, LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Harvey Partners, LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Harvey Partners, LLC manage?

Harvey Partners, LLC reported $1.2B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $1.4B.