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CIK: 0001510940
Total reported value
$856.3M
$856.3M
20 檔
35.0%
At the close of Q3 2025, ACK Asset Management LLC disclosed equity holdings valued at approximately $856.3M, spread across 20 reported holdings.
ACK Asset Management LLC executed strategic sector rebalancing during Q3 2025, establishing 10 new positions while fully exiting 10 holdings and trimming 5 positions.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ENS | Enersys | Stock-Industrials | 8.26% | — | — | |
| 2 | MTRN | Materion CORP | Stock-Other | 7.93% | -3.88% | — | |
| 3 | GVA | Granite Construction Inc | Stock-Industrials | 7.48% | -3.74% | EXIT | |
| 4 | ATRO | Astronics CORP | Stock-Other | 7.02% | — | -40.29% | |
| 5 | WMS | Advanced Drainage Systems In | Stock-Industrials | 6.77% | +0.47% | +13.04% | |
| 6 | JBTM | Jbt Marel CORP | Stock-Industrials | 6.16% | — | — | |
| 7 | CNM | Core & Main Inc-class A | Stock-Industrials | 6.06% | +0.59% | — | |
| 8 | ATS | Ats CORP | Stock-Other | 6.05% | -1.46% | — | |
| 9 | AIN | Albany Intl Corp-cl A | Stock-Other | 5.07% | — | +29.91% | |
| 10 | JHX | James Hardie Industries plc | Stock-Other | 5.05% | +1.46% | — | |
| 11 | HLIO | Helios Technologies Inc | Stock-Other | 5.02% | +0.80% | — | |
| 12 | SITE | Siteone Landscape Supply Inc | Stock-Industrials | 4.51% | -1.07% | +12.00% | |
| 13 | ASTE | Astec Industries Inc | Stock-Other | 4.22% | -0.36% | — | |
| 14 | APOG | Apogee Enterprises Inc | Stock-Other | 3.86% | — | — | |
| 15 | MBC | Masterbrand Inc | Stock-Consumer Disc | 3.79% | +0.61% | — | |
| 16 | CTRI | Centuri Holdings Inc | Stock-Other | 3.64% | — | -32.33% | |
| 17 | CLFD | Clearfield Inc | Stock-Other | 2.69% | +1.33% | — | |
| 18 | EXP | Eagle Materials Inc | Stock-Materials | 2.62% | +1.88% | — | |
| 19 | NPKI | Npk International Inc | Stock-Other | 2.23% | — | +28.53% | |
| 20 | CTOS | Custom Truck One Source Inc | Stock-Other | 1.55% | — | +2.67% |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | GVA | Granite Construction Inc | +5.1% | — | Add |
| 2 | SITE | Siteone Landscape Supply Inc | +2.5% | +12.00% | Add |
| 3 | MTRN | Materion CORP | +1.8% | — | Add |
| 4 | MBC | Masterbrand Inc | +1% | — | Add |
| 5 | CTRI | Centuri Holdings Inc | +0.4% | -32.33% | Add |
| 6 | CLFD | Clearfield Inc | -0.7% | — | Trim |
| 7 | ENS | Enersys | -1.1% | — | Trim |
| 8 | ATRO | Astronics CORP | -1.2% | -40.29% | Trim |
| 9 | JBTM | Jbt Marel CORP | -1.3% | — | Trim |
| 10 | ATS | Ats CORP | -2.2% | — | Trim |
| 11 | DY | Dycom Industries Inc | — | EXIT | Sold out |
| 12 | WMS | Advanced Drainage Systems In | — | NEW | New buy |
| 13 | MTZ | Mastec Inc | — | EXIT | Sold out |
| 14 | CNM | Core & Main Inc-class A | — | NEW | New buy |
| 15 | AIN | Albany Intl Corp-cl A | — | NEW | New buy |
| 16 | JHX | James Hardie Industries plc | — | NEW | New buy |
| 17 | HLIO | Helios Technologies Inc | — | NEW | New buy |
| 18 | ROG | Rogers CORP | — | EXIT | Sold out |
| 19 | ASTE | Astec Industries Inc | — | NEW | New buy |
| 20 | MYRG | Myr Group Inc/delaware | — | EXIT | Sold out |
| 21 | APOG | Apogee Enterprises Inc | — | NEW | New buy |
| 22 | CECO | Ceco Environmental CORP | — | EXIT | Sold out |
| 23 | MIR | Mirion Technologies Inc | — | EXIT | Sold out |
| 24 | EXP | Eagle Materials Inc | — | NEW | New buy |
| 25 | 37M | Mrc Global Inc | — | EXIT | Sold out |
| 26 | NPKI | Npk International Inc | — | NEW | New buy |
| 27 | BIRDF | Bird Construction Inc | — | EXIT | Sold out |
| 28 | MTRX | Matrix Service Co | — | EXIT | Sold out |
| 29 | CTOS | Custom Truck One Source Inc | — | NEW | New buy |
| 30 | LASR | Nlight Inc | — | EXIT | Sold out |
According to official SEC Form 13F filings, ACK Asset Management LLC reported a total U.S. public equity portfolio value of $856.3M across 20 disclosed positions in Q3 2025.
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In terms of portfolio concentration, the top 5 core holdings (including ENS, MTRN, GVA) accounted for 35.0% of total reported equity market value during Q3 2025.
Top New Position Initiated
WMS
市值: $54.1M
Top Position Liquidated / Trimmed
DY
前期市值: $58.3M
During Q3 2025, ACK Asset Management LLC's top holdings by market value included ENS (8.3%)、MTRN (7.9%)、GVA (7.5%). The largest single position, ENS, represented 8.3% of total portfolio value.
In Q3 2025, ACK Asset Management LLC made 30 total portfolio adjustments, initiating 10 new buys, adding to 5 positions, trimming 5 holdings, and fully liquidating 10 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
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