DOSSIER · 13F-HR · Q4 2025

Harvey Partners, LLC

$1.1B in tracked AUM across 44 positions as of Q4 2025.

HP
CIK 0001406484 · last filed Dec 31, 2025
Total AUM
$1.1B
as of Q4 2025
Holdings
44
positions
Whale Score
55
55
tracked
Activity
no data
changes this Q
AI Analysis · Q4 2025

1. Portfolio Overview

Harvey Partners, LLC manages a concentrated portfolio of approximately $638.31 million, spread across 24 individual holdings. The firm executed a significant reduction in portfolio exposure during the quarter, with total assets under management (AUM) declining by 37.4% from $1.02 billion at the end of the previous quarter. This reduction was driven by a combination of asset sales and market depreciation rather than capital outflows alone, as evidenced by the liquidatio...

The portfolio exhibits a high-conviction strategy characterized by active turnover and concentration. With the top 10 positions accounting for roughly 66% of the total portfolio value, the firm avoids over-diversification in favor of meaningful exposure to specific winners. The average position size is approximately $26.6 million, though the variance is significant, with the largest holding (ENPRO Inc) representing nearly 9% of the portfolio, while the smallest represents less than 0.3%. The reduction in holdings suggests a pivot toward capital preservation or a reallocation of capital into a tighter set of high-conviction names.

2. Key Holdings

Quarter at a glance — Q4 2025

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q4 2025.

#HoldingValueSharesWeight
01
NPO
ENPRO INC
$53M249K4.7%
02
GLDD
GREAT LAKES DREDGE & DOCK
$49M3.7M4.3%
03
MKSI
MKS INC.
$46M289K4.1%
04
ADEA
ADEIA INC
$45M2.6M4.0%
05
LASR
NLIGHT INC
$45M1.2M4.0%
06
BWXT
BWX TECHNOLOGIES INC
$43M251K3.9%
07
MTRN
MATERION CORP
$40M320K3.5%
08
WCN
WASTE CONNECTIONS INC
$39M224K3.5%
09
AZZ
AZZ INC
$39M365K3.5%
10
THRM
GENTHERM INC
$38M1.0M3.4%

Filing history

2025Q4Dec 31
$1.1B 76.8%
44 positionsView →
2025Q3Sep 30
$638M 37.4%
24 positionsView →
2025Q2Jun 30
$1.0B 18.9%
42 positionsLocked
2025Q1Mar 31
$857M 4.8%
42 positionsLocked
2024Q4Dec 31
$900M 2.5%
42 positionsLocked
2024Q3Sep 30
$878M 5.6%
43 positionsLocked
2024Q2Jun 30
$832M 11.9%
41 positionsLocked
2024Q1Mar 31
$944M 7.2%
41 positionsLocked
2023Q4Dec 31
$880M 11.6%
43 positionsLocked
2023Q3Sep 30
$789M 3.5%
42 positionsLocked
2023Q2Jun 30
$818M 1.2%
41 positionsLocked
2023Q1Mar 31
$808M 2.7%
39 positionsLocked
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