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CIK: 0001510940
Total reported value
$856.3M
$856.3M
23 檔
31.6%
As reported in its official Q4 2025 Form 13F filing, ACK Asset Management LLC's tracked investment portfolio stood at $856.3M with 23 total positions.
In Q4 2025, ACK Asset Management LLC displayed an active expansion posture, initiating 6 new positions and adding to 5 existing holdings, outstripping position reductions.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | MTRN | Materion CORP | Stock-Other | 7.41% | -3.88% | -9.53% | |
| 2 | GVA | Granite Construction Inc | Stock-Industrials | 7.24% | -3.74% | EXIT | |
| 3 | WMS | Advanced Drainage Systems In | Stock-Industrials | 7.09% | +0.47% | — | |
| 4 | ATS | Ats CORP | Stock-Other | 6.38% | -1.46% | — | |
| 5 | CNM | Core & Main Inc-class A | Stock-Industrials | 5.87% | +0.59% | — | |
| 6 | ENS | Enersys | Stock-Industrials | 5.61% | — | -47.92% | |
| 7 | NOVT | Novanta Inc | Stock-Other | 5.60% | -5.53% | EXIT | |
| 8 | JHX | James Hardie Industries plc | Stock-Other | 5.47% | +1.46% | — | |
| 9 | HLIO | Helios Technologies Inc | Stock-Other | 5.24% | +0.80% | +1.35% | |
| 10 | SITE | Siteone Landscape Supply Inc | Stock-Industrials | 5.16% | -1.07% | +17.86% | |
| 11 | ROG | Rogers CORP | Stock-Other | 5.02% | -6.36% | EXIT | |
| 12 | EXP | Eagle Materials Inc | Stock-Materials | 4.28% | +1.88% | +83.33% | |
| 13 | ASTE | Astec Industries Inc | Stock-Other | 4.28% | -0.36% | +12.12% | |
| 14 | ATRO | Astronics CORP | Stock-Other | 4.07% | — | -51.43% | |
| 15 | AIN | Albany Intl Corp-cl A | Stock-Other | 3.82% | — | -21.05% | |
| 16 | APOG | Apogee Enterprises Inc | Stock-Other | 3.72% | — | +14.83% | |
| 17 | DXPE | Dxp Enterprises Inc | Stock-Other | 3.31% | -4.53% | EXIT | |
| 18 | MBC | Masterbrand Inc | Stock-Consumer Disc | 3.19% | +0.61% | — | |
| 19 | CDNL | Cardinal Infrastructure Gr-a | Stock-Other | 2.56% | -4.33% | EXIT | |
| 20 | CLFD | Clearfield Inc | Stock-Other | 2.29% | +1.33% | — | |
| 21 | ERII | Energy Recovery Inc | Stock-Other | 1.15% | — | — | |
| 22 | ✓ | Stock-Other | 0.69% | -0.03% | — | ||
| 23 | CTOS | Custom Truck One Source Inc | Stock-Other | 0.58% | — | -58.43% |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | EXP | Eagle Materials Inc | +1.7% | +83.33% | Add |
| 2 | SITE | Siteone Landscape Supply Inc | +0.7% | +17.86% | Add |
| 3 | JHX | James Hardie Industries plc | +0.4% | — | Unchanged |
| 4 | ATS | Ats CORP | +0.3% | — | Unchanged |
| 5 | WMS | Advanced Drainage Systems In | +0.3% | — | Unchanged |
| 6 | HLIO | Helios Technologies Inc | +0.2% | +1.35% | Add |
| 7 | ASTE | Astec Industries Inc | +0.1% | +12.12% | Add |
| 8 | APOG | Apogee Enterprises Inc | -0.1% | +14.83% | Add |
| 9 | CNM | Core & Main Inc-class A | -0.2% | — | Unchanged |
| 10 | GVA | Granite Construction Inc | -0.2% | -8.26% | Trim |
| 11 | CLFD | Clearfield Inc | -0.4% | — | Unchanged |
| 12 | MTRN | Materion CORP | -0.5% | -9.53% | Trim |
| 13 | MBC | Masterbrand Inc | -0.6% | — | Unchanged |
| 14 | CTOS | Custom Truck One Source Inc | -1% | -58.43% | Trim |
| 15 | AIN | Albany Intl Corp-cl A | -1.3% | -21.05% | Trim |
| 16 | ENS | Enersys | -2.7% | -47.92% | Trim |
| 17 | ATRO | Astronics CORP | -3% | -51.43% | Trim |
| 18 | JBTM | Jbt Marel CORP | — | EXIT | Sold out |
| 19 | NOVT | Novanta Inc | — | NEW | New buy |
| 20 | ROG | Rogers CORP | — | NEW | New buy |
| 21 | CTRI | Centuri Holdings Inc | — | EXIT | Sold out |
| 22 | DXPE | Dxp Enterprises Inc | — | NEW | New buy |
| 23 | CDNL | Cardinal Infrastructure Gr-a | — | NEW | New buy |
| 24 | NPKI | Npk International Inc | — | EXIT | Sold out |
| 25 | ERII | Energy Recovery Inc | — | NEW | New buy |
| 26 | ✓ | — | NEW | New buy |
According to official SEC Form 13F filings, ACK Asset Management LLC reported a total U.S. public equity portfolio value of $856.3M across 23 disclosed positions in Q4 2025.
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In terms of portfolio concentration, the top 5 core holdings (including MTRN, GVA, WMS) accounted for 31.6% of total reported equity market value during Q4 2025.
Top New Position Initiated
NOVT
市值: $44.6M
Top Position Liquidated / Trimmed
JBTM
前期市值: $49.2M
During Q4 2025, ACK Asset Management LLC's top holdings by market value included MTRN (7.4%)、GVA (7.2%)、WMS (7.1%). The largest single position, MTRN, represented 7.4% of total portfolio value.
In Q4 2025, ACK Asset Management LLC made 20 total portfolio adjustments, initiating 6 new buys, adding to 5 positions, trimming 6 holdings, and fully liquidating 3 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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