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AAM

ACK Asset Management Portfolio holdings

AUM $801M
1-Year Est. Return 60.42%
This Fund
S&P 500
This Quarter Est. Return
+14.31%
1 Year Est. Return
+60.42%
3 Year Est. Return
+99.73%
5 Year Est. Return
+138.79%
10 Year Est. Return
+1,118.13%
AUM
$799M
AUM Growth
+$37.7M
Cap. Flow
-$14.2M
Cap. Flow %
-1.77%
Top 10 Hldgs %
65.85%
Holding
28
New
7
Increased
5
Reduced
2
Closed
8

Top Buys

Rank Stock Value
1
CNM icon
Core & Main
CNM
+$54.5M
2
JHX icon
James Hardie Industries
JHX
+$50.3M
3
HLIO icon
Helios Technologies
HLIO
+$36M
4
ASTE icon
Astec Industries
ASTE
+$30.7M
5
APOG icon
Apogee Enterprises
APOG
+$30.4M

Top Sells

Rank Stock Value
1
DY icon
Dycom Industries
DY
+$54.9M
2
MYRG icon
MYR Group
MYRG
+$48.1M
3
RRX icon
Regal Rexnord
RRX
+$39.9M
4
MRC
MRC Global
MRC
+$31.1M
5
ATRO icon
Astronics
ATRO
+$30.3M

Sector Composition

Rank Sector Weight
1 Industrials 69.2%
2 Materials 15.61%
3 Consumer Discretionary 8.86%
4 Utilities 3.64%
5 Technology 2.69%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MTZ icon
26
MasTec
MTZ
$26.6B
– –
-125,000
Closed -$21.3M
MYRG icon
27
MYR Group
MYRG
$5.75B
– –
-265,200
Closed -$48.1M
RRX icon
28
Regal Rexnord
RRX
$14B
– –
-275,000
Closed -$39.9M
1
2

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LWM
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ACK Asset Management's Q3 2025 Portfolio in Review

As of Q3 2025, ACK Asset Management held 28 positions worth $799M, up 5% from $761M the previous quarter. Its ten largest holdings account for 66% of the portfolio.

ACK Asset Management's Q3 2025 filing shows 7 new, 5 increased, 2 reduced and 8 closed positions. Its largest new stake was Core & Main: 900,000 shares worth $48.4M. The largest sale was Dycom Industries, an estimated $54.9M.

By sector, the portfolio is most concentrated in Industrials at 69% of assets, down from 76% a quarter earlier, followed by Materials and Consumer Discretionary.

  • ACK Asset Management's largest Q3 2025 buy was Core & Main: 900,000 shares worth $48.4M.
  • ACK Asset Management added most to Albany International in Q3 2025, an estimated $11.1M increase.
  • ACK Asset Management's biggest Q3 2025 reduction was Astronics, cutting an estimated $30.3M.
  • ACK Asset Management fully exited Dycom Industries in Q3 2025, selling an estimated $54.9M.
  • ACK Asset Management's ten largest holdings make up 66% of its $799M portfolio in Q3 2025.
  • ACK Asset Management opened 7 new positions and closed 8 in Q3 2025.
  • ACK Asset Management's portfolio value rose 5% quarter-over-quarter to $799M.

Based on ACK Asset Management's 13F filing for Q3 2025, filed 14 Nov 2025.