2026 Q1 Portfolio Activity
In 2026 Q1, Harvey Partners, LLC maintained a portfolio of 51 distinct positions. The most significant new addition was POOL CORP, now representing 2.17% of the total fund value. They heavily accumulated shares in ADEIA INC, increasing the position by 5.3%. The fund also reduced its exposure to GREAT LAKES DREDGE & DOCK by 83.5%.
Position History
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Total Positions
51
Quarter
2026 Q1
Top Holding
ADEA (5.3%)
Top 10 Concentration
39.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 51
Harvey Partners, LLC Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
ADEA
ADEIA INC
|
Technology | 5.27% | 4.00% |
#1
3
Prev: #4
|
6.1 |
—
|
138,117 | 5.3% |
P
S
|
2,754,500 | $66,190,635 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NPO
ENPRO INC
|
Industrials | 5.06% | 4.73% |
#2
1
Prev: #1
|
4.0 |
—
|
4,327 | 1.7% |
P
S
|
253,500 | $63,539,775 | 2009 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MKSI
MKS INC.
|
Technology | 4.45% | 4.10% |
#3
Prev: #3
|
3.3 |
—
|
-45,801 | -15.8% |
P
S
|
243,396 | $55,934,835 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NGVT
INGEVITY CORP
|
Basic Materials | 4.21% | 3.30% |
#4
7
Prev: #11
|
4.2 |
—
|
114,070 | 18.1% |
P
S
|
743,500 | $52,959,505 | 2024 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BWXT
BWX TECHNOLOGIE...
|
Industrials | 4.15% | 3.85% |
#5
1
Prev: #6
|
2.7 |
—
|
3,828 | 1.5% |
P
S
|
255,300 | $52,206,297 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AZZ
AZZ INC
|
Industrials | 3.50% | 3.46% |
#6
3
Prev: #9
|
1.9 |
—
|
-13,085 | -3.6% |
P
S
|
351,500 | $43,983,195 | 2008 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MTRN
MATERION CORP
|
Basic Materials | 3.37% | 3.52% |
#7
Prev: #7
|
1.8 |
—
|
-26,379 | -8.3% |
P
S
|
293,121 | $42,399,953 | 2012 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WCN
WASTE CONNECTIO...
|
Industrials | 3.34% | 3.48% |
#8
Prev: #8
|
3.3 |
—
|
34,341 | 15.3% |
P
S
|
258,500 | $41,990,740 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LFUS
LITTELFUSE INC
|
Technology | 3.28% | 2.63% |
#9
7
Prev: #16
|
1.8 |
—
|
4,000 | 3.4% |
P
S
|
121,500 | $41,231,025 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NOVT
NOVANTA INC
|
Technology | 3.01% | 3.21% |
#10
2
Prev: #12
|
3.2 |
—
|
16,000 | 5.3% |
P
S
|
320,000 | $37,795,200 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MLM
MARTIN MARIETTA...
|
Basic Materials | 2.99% | 2.82% |
#11
4
Prev: #15
|
3.7 |
—
|
12,790 | 25.0% |
P
S
|
63,925 | $37,631,369 | 2011 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ASTE
ASTEC INDS INC
|
Industrials | 2.88% | 2.39% |
#12
8
Prev: #20
|
3.2 |
—
|
50,500 | 8.1% |
P
S
|
672,200 | $36,191,248 | 2007 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BV
BRIGHTVIEW HLDG...
|
Industrials | 2.76% | 2.93% |
#13
Prev: #13
|
3.1 |
—
|
329,000 | 12.6% |
P
S
|
2,938,000 | $34,639,020 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BATRK
ATLANTA BRAVES ...
|
Communication Services | 2.74% | 2.59% |
#14
3
Prev: #17
|
3.1 |
—
|
63,954 | 8.6% |
P
S
|
806,000 | $34,416,200 | 2023 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
THRM
GENTHERM INC
|
Consumer Cyclical | 2.73% | 3.37% |
#15
5
Prev: #10
|
3.1 |
—
|
187,001 | 17.9% |
P
S
|
1,233,500 | $34,266,630 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BALL
BALL CORP
|
Consumer Cyclical | 2.63% | 2.12% |
#16
8
Prev: #24
|
3.6 |
—
|
107,500 | 23.8% |
P
S
|
560,000 | $33,101,600 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
THR
THERMON GROUP H...
|
Industrials | 2.59% | 2.54% |
#17
1
Prev: #18
|
1.5 |
—
|
-125,342 | -16.2% |
P
S
|
646,728 | $32,595,091 | 2020 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AWI
ARMSTRONG WORLD...
|
Industrials | 2.57% | 2.90% |
#18
4
Prev: #14
|
3.0 |
—
|
24,453 | 14.3% |
P
S
|
196,000 | $32,300,800 | 2020 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RTO
RENTOKIL INITIA...
|
Industrials | 2.44% | 2.31% |
#19
2
Prev: #21
|
3.0 |
—
|
89,331 | 10.1% |
P
S
|
975,500 | $30,708,740 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ULS
UL SOLUTIONS IN...
|
Industrials | 2.34% | 2.15% |
#20
3
Prev: #23
|
2.9 |
—
|
34,742 | 11.3% |
P
S
|
342,500 | $29,355,675 | 2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CTS
CTS CORP
|
Technology | 2.26% | 2.07% |
#21
4
Prev: #25
|
2.9 |
—
|
50,356 | 9.3% |
P
S
|
594,400 | $28,388,544 | 2020 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CALX
CALIX INC
|
Technology | 2.23% | 2.50% |
#22
3
Prev: #19
|
2.9 |
—
|
38,768 | 7.3% |
P
S
|
572,500 | $28,046,775 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
POOL
POOL CORP
|
Industrials | 2.17% | — |
#23
Prev: #—
|
4.4 |
—
|
135,000 | — |
NEW
|
135,000 | $27,314,550 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SMG
SCOTTS MIRACLE-...
|
Basic Materials | 2.12% | 1.14% |
#24
13
Prev: #37
|
3.8 |
—
|
217,500 | 98.9% |
P
S
|
437,500 | $26,604,375 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NOK
NOKIA CORP
|
Technology | 1.88% | 1.91% |
#25
2
Prev: #27
|
1.3 |
—
|
-392,282 | -11.8% |
P
S
|
2,945,500 | $23,681,820 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LASR
NLIGHT INC
|
Technology | 1.88% | 4.00% |
#26
21
Prev: #5
|
0.8 |
—
|
-788,918 | -65.6% |
P
S
|
413,584 | $23,582,560 | 2023 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CWST
CASELLA WASTE S...
|
Industrials | 1.78% | 1.70% |
#27
2
Prev: #29
|
3.2 |
—
|
85,358 | 43.5% |
P
S
|
281,500 | $22,334,210 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ICHR
ICHOR HOLDINGS
|
Technology | 1.74% | 0.79% |
#28
13
Prev: #41
|
1.2 |
—
|
-13,321 | -2.8% |
P
S
|
469,179 | $21,868,433 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MANU
MANCHESTER UTD ...
|
Communication Services | 1.62% | 1.56% |
#29
2
Prev: #31
|
2.6 |
—
|
109,091 | 9.9% |
P
S
|
1,212,500 | $20,394,250 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BCPC
BALCHEM CORP
|
Basic Materials | 1.55% | 1.58% |
#30
Prev: #30
|
1.1 |
—
|
-1,200 | -1.0% |
P
S
|
114,800 | $19,456,304 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VPG
VISHAY PRECISIO...
|
Technology | 1.39% | 1.30% |
#31
3
Prev: #34
|
2.6 |
—
|
19,998 | 5.2% |
P
S
|
401,571 | $17,436,213 | 2013 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
QQQ
PUT
INVESCO QQQ TR
|
PUT Option | 1.38% | — |
#32
Prev: #—
|
4.1 |
—
|
30,000 | — |
NEW
|
30,000 | $17,315,400 | 2009 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KN
KNOWLES CORP
|
Technology | 1.36% | 1.24% |
#33
2
Prev: #35
|
1.0 |
—
|
12,000 | 1.8% |
P
S
|
664,500 | $17,064,360 | 2014 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CHKP
CHECK POINT SOF...
|
Technology | 1.24% | 2.02% |
#34
8
Prev: #26
|
1.0 |
—
|
-13,601 | -11.0% |
P
S
|
109,500 | $15,642,075 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PANW
PALO ALTO NETWO...
|
Technology | 1.16% | — |
#35
Prev: #—
|
4.0 |
—
|
91,000 | — |
NEW
|
91,000 | $14,589,120 | 2013 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RSKD
RISKIFIED LTD
|
Technology | 1.06% | 1.36% |
#36
4
Prev: #32
|
2.4 |
—
|
300,523 | 9.7% |
P
S
|
3,396,000 | $13,312,320 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FWONK
LIBERTY MEDIA C...
|
Communication Services | 0.84% | — |
#37
Prev: #—
|
3.8 |
—
|
123,500 | — |
NEW
|
123,500 | $10,499,970 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MTRX
MATRIX SVC CO
|
Industrials | 0.83% | 0.88% |
#38
1
Prev: #39
|
2.3 |
—
|
52,322 | 6.1% |
P
S
|
905,000 | $10,389,400 | 2012 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GLDD
GREAT LAKES DRE...
|
Industrials | 0.83% | 4.31% |
#39
37
Prev: #2
|
0.3 |
—
|
-3,093,215 | -83.5% |
P
S
|
610,000 | $10,370,000 | 2011 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WH
WYNDHAM HOTELS ...
|
Consumer Cyclical | 0.78% | — |
#40
Prev: #—
|
3.8 |
—
|
121,000 | — |
NEW
|
121,000 | $9,828,830 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DNOW
DNOW INC
|
Industrials | 0.69% | 2.28% |
#41
19
Prev: #22
|
0.3 |
—
|
-1,208,456 | -62.3% |
P
S
|
730,943 | $8,705,531 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
OEC
ORION S.A.
|
Basic Materials | 0.67% | 1.13% |
#42
4
Prev: #38
|
0.3 |
—
|
-1,105,415 | -45.9% |
P
S
|
1,304,000 | $8,476,000 | 2014 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SPY
STATE STR SPDR ...
|
ETF | 0.67% | — |
#43
Prev: #—
|
3.8 |
—
|
13,000 | — |
NEW
|
13,000 | $8,454,420 | 2014 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IWM
PUT
ISHARES TR
|
PUT Option | 0.64% | 1.31% |
#44
11
Prev: #33
|
0.3 |
—
|
-27,500 | -45.8% |
P
S
|
32,500 | $8,060,000 | 2008 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FWONA
LIBERTY MEDIA C...
|
Communication Services | 0.37% | — |
#45
Prev: #—
|
3.6 |
—
|
60,000 | — |
NEW
|
60,000 | $4,684,800 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
APLD
APPLIED DIGITAL...
|
Technology | 0.28% | 0.54% |
#46
4
Prev: #42
|
0.1 |
—
|
-100,000 | -40.0% |
P
S
|
150,000 | $3,561,000 | 2022 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VRNS
VARONIS SYS INC
|
Technology | 0.24% | 1.18% |
#47
11
Prev: #36
|
0.1 |
—
|
-266,085 | -65.5% |
P
S
|
140,000 | $3,005,800 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NEPT
NEPTUNE INS HLD...
|
Unknown | 0.00% | 0.05% |
Sold All 😨
(Was: #44) |
0.0 |
—
|
-20,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MIAX
MIAMI INTL HLDG...
|
Financial Services | 0.00% | 0.20% |
Sold All 😨
(Was: #43) |
0.0 |
—
|
-50,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VOO
VANGUARD INDEX ...
|
ETF | 0.00% | 0.79% |
Sold All 😨
(Was: #40) |
0.0 |
—
|
-14,200 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-50 of 51 holdings