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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
+9%
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
$801M
AUM Growth
+$4.39M
Cap. Flow
-$28.3M
Cap. Flow %
-3.53%
Top 10 Hldgs %
61.98%
Holding
26
New
3
Increased
6
Reduced
1
Closed
6

Top Buys

Rank Stock Value
1
LFUS icon
Littelfuse
LFUS
+$43.8M
2
SWIM icon
Latham Group
SWIM
+$32.9M
3
CTS icon
CTS Corp
CTS
+$29.3M
4
MBC icon
MasterBrand
MBC
+$15.1M
5
ROG icon
Rogers Corp
ROG
+$3.94M

Top Sells

Rank Stock Value
1
ENS icon
EnerSys
ENS
+$44.7M
2
ATRO icon
Astronics
ATRO
+$32.4M
3
GVA icon
Granite Construction
GVA
+$31.2M
4
AIN icon
Albany International
AIN
+$30.4M
5
APOG icon
Apogee Enterprises
APOG
+$29.6M

Sector Composition

Rank Sector Weight
1 Industrials 51.86%
2 Technology 23.52%
3 Materials 17.44%
4 Consumer Discretionary 3.84%

No holdings matched the selected filter criteria.

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ACK Asset Management's Q1 2026 Portfolio in Review

As of Q1 2026, ACK Asset Management held 26 positions worth $801M, up 0.55% from $797M the previous quarter. Its ten largest holdings account for 62% of the portfolio.

ACK Asset Management withdrew a net $28.3M in Q1 2026, closing 6 positions and reducing 1 holding. Its most notable exit was EnerSys, an estimated $44.7M position sold in full.

By sector, the portfolio is most concentrated in Industrials at 52% of assets, down from 62% a quarter earlier, followed by Technology and Materials.

Against the trend, ACK Asset Management opened a new position in Littelfuse worth $45.8M.

  • ACK Asset Management's largest Q1 2026 buy was Littelfuse: 135,000 shares worth $45.8M.
  • ACK Asset Management added most to MasterBrand in Q1 2026, an estimated $15.1M increase.
  • ACK Asset Management's biggest Q1 2026 reduction was Granite Construction, cutting an estimated $31.2M.
  • ACK Asset Management fully exited EnerSys in Q1 2026, selling an estimated $44.7M.
  • ACK Asset Management's ten largest holdings make up 62% of its $801M portfolio in Q1 2026.
  • ACK Asset Management opened 3 new positions and closed 6 in Q1 2026.
  • ACK Asset Management's portfolio value rose 0.55% quarter-over-quarter to $801M.

Based on ACK Asset Management's 13F filing for Q1 2026, filed 15 May 2026.