Latest ACK Asset Management LLC Stock Portfolio

$856Million | No. of Holdings #21

ACK Asset Management LLC Performance

2026 Q2+15.17%
YTD+20.46%
2025+15.47%

About ACK Asset Management LLC and 13F Hedge Fund Stock Holdings

On 2026-08-13, the fund reported it's updated stock portfolio. In the 13F Holdings report, ACK Asset Management LLC reported an equity portfolio of $856.3 Millions as of 30 Jun, 2026. <br><br> The top stock holdings of ACK Asset Management LLC are WMS, HLIO, LFUS. The fund has invested 7.2% of it's portfolio in WMS and 7.1% of portfolio in HLIO. <br><br> The fund managers got completely rid off ROG (ROG), NOVT (NOVT) and DXPE (DXPE) stocks. They significantly reduced their stock positions in MTRN (MTRN), ATS and HLIO (HLIO). ACK Asset Management LLC opened new stock positions in GTX (GTX), BWA (BWA) and DNOW (DNOW). The fund showed a lot of confidence in some stocks as they added substantially to EXP (EXP), AERO-SWX and CNM (CNM).
ACK Asset Management LLC Equity Portfolio Value
Last Reported on: 13 Aug, 2026
$856Million
  as of Aug 13, 2026

ACK Asset Management LLC Annual Return Estimates Vs S&P 500

Our best estimate is that ACK Asset Management LLC made a return of 15.17% in the last quarter. In trailing 12 months, it's portfolio return was 31.45%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
gtx54,345,000
bwa39,840,000
dnow38,910,000
st28,644,000
shls22,324,500
eqpt20,934,600
mei16,646,200

New stocks bought by ACK Asset Management LLC

Additions

Ticker% Inc.
exp33.33
aero-swx30.42
cnm21.11
clfd10.2
swim9.69

Additions to existing portfolio by ACK Asset Management LLC

Reductions

Ticker% Reduced
mtrn-71.57
ats-18.75
hlio-12.73
aste-12.23
lfus-7.41

ACK Asset Management LLC reduced stake in above stock

Sold off

Ticker$ Sold
cdnl-34,658,500
cts-27,891,800
rog-50,981,800
novt-44,291,200
dxpe-36,329,800
gva-29,970,000

ACK Asset Management LLC got rid off the above stocks

Sector Distribution

ACK Asset Management LLC has about 34% of it's holdings in Industrials sector.

  • Industrials
  • Others
  • Technology
  • Consumer Cyclical
  • Basic Materials
  • Energy
Sector%
Industrials34
Others21.7
Technology18.3
Consumer Cyclical11
Basic Materials10.5
Energy4.5

Market Cap. Distribution

ACK Asset Management LLC has about 18.4% of it's portfolio invested in the large-cap and mega-cap stocks.

  • MID-CAP
  • UNALLOCATED
  • LARGE-CAP
  • SMALL-CAP
Category%
MID-CAP42.4
UNALLOCATED21.7
LARGE-CAP18.4
SMALL-CAP17.5

Stocks belong to which Index?

About 38.6% of the stocks held by ACK Asset Management LLC either belong to S&P 500 or RUSSELL 2000 index.

  • Others
  • RUSSELL 2000
  • S&P 500
Index%
Others61.5
RUSSELL 200033.9
S&P 5004.7
Top 5 Winners (%)%
MTRN
mtrn
67.8 %
CLFD
clfd
46.9 %
jhx
38.2 %
HLIO
hlio
35.5 %
LFUS
lfus
32.9 %
Top 5 Winners ($)$
MTRN
mtrn
46.6 M
HLIO
hlio
17.9 M
jhx
15.2 M
LFUS
lfus
15.1 M
CLFD
clfd
10.3 M
Top 5 Losers (%)%
aero-swx
-16.8 %
SITE
site
-14.1 %
CNM
cnm
-2.1 %
Top 5 Losers ($)$
SITE
site
-6.2 M
aero-swx
-5.7 M
CNM
cnm
-1.1 M

ACK Asset Management LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of ACK Asset Management LLC

ACK Asset Management LLC has 21 stocks in it's portfolio. About 60.2% of the portfolio is in top 10 stocks. SITE proved to be the most loss making stock for the portfolio. MTRN was the most profitable stock for ACK Asset Management LLC last quarter.

$856.33MTotal Value
27.00Positions
13 Aug, 2026Last Reported
Current holdings of Current Stock Holdings of ACK Asset Management LLC, last reported on 13 Aug, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change