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ACK Asset Management LLC - Portfolio Stock Holdings

ACK Asset Management LLC disclosed 25 stock positions in a recent SEC 13F filing. $773,961,022 of stock holdings were filed, with the largest holdings including MTRN, WMS, and ATS. This filing represented positions held on March 31, 2026, and was filed on May 15, 2026.

We estimate the fund has a total AUM of $1,068,346,088 and has 10 employees, per a recent ADV filing. Most of the fund’s AUM appears to come from pooled investment vehicles.

Report Period:

March 31, 2026

No. of Stocks:

25

Est. Stock Holding Value:

$773,961,022

Top Stock Holdings By Sector

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Portfolio Stock Holdings - ACK Asset Management LLC

Stock
Holdings (Shares)
Holdings (USD)
% of Portfolio
Change (Shares)
Change (USD)
% Change

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