Ack Asset Management LLC Portfolio Holdings

Ack Asset Management LLC

  • $628 Million
  • Q3 2025

Ack Asset Management LLC has filed its 13F form on November 14, 2025 for Q3 2025 where it was disclosed a total value porftolio of $628 Million distributed in 20 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Ener Sys with a value of $66M, Materion Corp with a value of $63.4M, Granite Construction Inc with a value of $59.8M, Astronics Corp with a value of $56.1M, and Advanced Drainage Systems, Inc. with a value of $54.1M.

Examining the 13F form we can see an decrease of $20.4M in the current position value, from $648M to 628M.

Ack Asset Management LLC is based out at Greenwich, CT

Below you can find more details about Ack Asset Management LLC portfolio as well as his latest detailed transactions.

Portfolio value $628 Million
Industrials: $482 Million
Basic Materials: $84.4 Million
Consumer Cyclical: $40.5 Million
Technology: $21.5 Million

Stock Holdings Table

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$5.59B
$66 Million 10.51% of portfolio
584,324
Q2 2025 Reduced 6.41%
$2.39B
$63.4 Million 10.09% of portfolio
524,800
Q2 2025 Added 14.29%
$4.48B
$59.8 Million 9.52% of portfolio
545,000
Q2 2025 Added 185.79%
$1.28B
$56.1 Million 8.93% of portfolio
1,230,000
Q3 2025 Reduced 40.29%
$12.1B
$54.1 Million 8.61% of portfolio
390,000
Q3 2025 Added 13.04%
$8.12B
$48.4 Million 7.71% of portfolio
900,000
Q3 2025 New
$4.01B
$44.1 Million 7.02% of portfolio
350,546
Q2 2025 Reduced 5.21%
$1.4B
$40.5 Million 6.45% of portfolio
760,000
Q3 2025 Added 29.91%
$1.75B
$40.1 Million 6.39% of portfolio
770,000
Q3 2025 New
$5.79B
$36.1 Million 5.74% of portfolio
280,000
Q3 2025 Added 12.0%
$1B
$33.8 Million 5.38% of portfolio
701,500
Q3 2025 New
$744M
$30.8 Million 4.91% of portfolio
708,000
Q3 2025 New
$423M
$21.5 Million 3.42% of portfolio
625,200
Q2 2025 Reduced 9.02%
$7.44B
$21 Million 3.34% of portfolio
90,000
Q3 2025 New
$1.44B
$12.4 Million 1.97% of portfolio
1,925,000
Q3 2025 Added 2.67%
Ats
-
$0 0.0% of portfolio
-
Q2 2025 Reduced 8.3%
Ctri
-
$0 0.0% of portfolio
-
Q3 2025 Reduced 32.33%
Mbc
-
$0 0.0% of portfolio
-
Q3 2025 New
Npki
-
$0 0.0% of portfolio
-
Q3 2025 Added 28.53%

Summary

  • Portfolio
  • No. of Stocks 20
  • Current Value $628 Million
  • Prior Value $648 Million
  • Filing
  • Period Q3 2025
  • Filing Date November 14, 2025
  • Form Type 13F-HR
  • Activity in Q3 2025
  • New Purchases 7 stocks
  • Additional Purchases 5 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 2 stocks
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