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The Analysis of ACK Asset Management LLC's Holdings & P&L

Currently, ACK Asset Management LLC holds 20 types of securities in its portfolio with a total value $801.1M. In the most recent quarter, they have increased their positions in MTRN (+474.8K shares, valued at $68.7M), WMS (+390.0K shares, valued at $53.5M), ATS (+1.8M shares, valued at $52.1M); initiated new positions in MTRN (+474.8K shares, valued at $68.7M), WMS (+390.0K shares, valued at $53.5M), ATS (+1.8M shares, valued at $52.1M).

1M P&L

+34.4M+3.87%

3M P&L

+21.1M+2.34%

HY P&L

+217.9M+30.89%

P&L figures are estimated based on reported 13F stock holdings and market price changes. They are approximations and may not reflect actual fund performance. Stock split events may also affect the accuracy of these calculations, and we cannot guarantee that all splits have been fully accounted for.

Top Holding Treemap

Top Industries by Value

1Industrial Distribution114.2M

15.3%

2Specialty Industrial Machinery92.6M

12.4%

3Building Products & Equipment86.1M

11.5%

Top Industries by Stock Count

1Industrial Distribution3 stocks

14.3%

2Building Products & Equipment2 stocks

9.5%

3Specialty Industrial Machinery2 stocks

9.5%

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Stock Holdings

TickerCompany NameSharesShares △%Event DateReport DateHistory

MTRN MTRN474.8K sharesnew addition2026-03-312026-05-15

WMS WMS390.0K sharesnew addition2026-03-312026-05-15

ATS ATS1.8M sharesnew addition2026-03-312026-05-15

ROG ROG475.0K sharesnew addition2026-03-312026-05-15

HLIO HLIO780.4K sharesnew addition2026-03-312026-05-15

LFUS LFUS135.0K sharesnew addition2026-03-312026-05-15

CNM CNM900.0K sharesnew addition2026-03-312026-05-15

NOVT NOVT375.0K sharesnew addition2026-03-312026-05-15

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SITE SITE330.0K sharesnew addition2026-03-312026-05-15

ASTE ASTE786.5K sharesnew addition2026-03-312026-05-15

JHX JHX2.1M sharesnew addition2026-03-312026-05-15

DXPE DXPE260.0K sharesnew addition2026-03-312026-05-15

CDNL CDNL874.0K sharesnew addition2026-03-312026-05-15

EXP EXP165.0K sharesnew addition2026-03-312026-05-15

MBC MBC3.7M sharesnew addition2026-03-312026-05-15

GVA GVA250.0K sharesnew addition2026-03-312026-05-15

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CTS CTS584.0K sharesnew addition2026-03-312026-05-15

SWIM SWIM5.2M sharesnew addition2026-03-312026-05-15

AERO-SWX AERO-SWX830.0K sharesnew addition2026-03-312026-05-15

CLFD CLFD735.2K sharesnew addition2026-03-312026-05-15

MTRN

New

Shares474.8K

Event2026-03-31

Filed2026-05-15

WMS

New

Shares390.0K

Event2026-03-31

Filed2026-05-15

ATS

New

Shares1.8M

Event2026-03-31

Filed2026-05-15

ROG

New

Shares475.0K

Event2026-03-31

Filed2026-05-15

HLIO

New

Shares780.4K

Event2026-03-31

Filed2026-05-15

LFUS

New

Shares135.0K

Event2026-03-31

Filed2026-05-15

CNM

New

Shares900.0K

Event2026-03-31

Filed2026-05-15

NOVT

New

Shares375.0K

Event2026-03-31

Filed2026-05-15

SITE

New

Shares330.0K

Event2026-03-31

Filed2026-05-15

ASTE

New

Shares786.5K

Event2026-03-31

Filed2026-05-15

JHX

New

Shares2.1M

Event2026-03-31

Filed2026-05-15

DXPE

New

Shares260.0K

Event2026-03-31

Filed2026-05-15

CDNL

New

Shares874.0K

Event2026-03-31

Filed2026-05-15

EXP

New

Shares165.0K

Event2026-03-31

Filed2026-05-15

MBC

New

Shares3.7M

Event2026-03-31

Filed2026-05-15

GVA

New

Shares250.0K

Event2026-03-31

Filed2026-05-15

CTS

New

Shares584.0K

Event2026-03-31

Filed2026-05-15

SWIM

New

Shares5.2M

Event2026-03-31

Filed2026-05-15

AERO-SWX

New

Shares830.0K

Event2026-03-31

Filed2026-05-15

CLFD

New

Shares735.2K

Event2026-03-31

Filed2026-05-15

Call Option Holdings

No call option holdings data available

Put Option Holdings

No put option holdings data available