ACK Asset Management
Latest statistics and disclosures from ACK Asset Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are MTRN, GVA, WMS, ATS, CNM, and represent 33.99% of ACK Asset Management's stock portfolio.
- Added to shares of these 10 stocks: NOVT (+$45M), ROG (+$40M), DXPE (+$26M), CDNL (+$20M), EXP (+$16M), ERII (+$9.1M), SITE (+$6.2M), Aero-swx (+$5.5M), APOG, ASTE.
- Started 6 new stock positions in Aero-swx, DXPE, NOVT, ERII, CDNL, ROG.
- Reduced shares in these 9 stocks: JBTM (-$49M), ENS (-$41M), ATRO (-$34M), CTRI (-$29M), NPKI (-$18M), AIN (-$8.1M), CTOS (-$6.5M), MTRN (-$6.2M), GVA (-$5.2M).
- Sold out of its positions in CTRI, JBTM, NPKI.
- ACK Asset Management was a net seller of stock by $-22M.
- ACK Asset Management has $797M in assets under management (AUM), dropping by -0.30%.
- Central Index Key (CIK): 0001510940
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Portfolio Holdings for ACK Asset Management
ACK Asset Management holds 23 positions in its portfolio as reported in the December 2025 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Materion Corporation (MTRN) | 7.4 | $59M | -9% | 475k | 124.32 |
|
| Granite Construction (GVA) | 7.2 | $58M | -8% | 500k | 115.35 |
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| Advanced Drain Sys Inc Del (WMS) | 7.1 | $57M | 390k | 144.83 |
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| Ats (ATS) | 6.4 | $51M | 1.8M | 27.54 |
|
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| Core & Main (CNM) | 5.9 | $47M | 900k | 51.97 |
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| EnerSys (ENS) | 5.6 | $45M | -47% | 304k | 146.75 |
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| Novanta (NOVT) | 5.6 | $45M | NEW | 375k | 118.99 |
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| James Hardie Inds Plc F (JHX) | 5.5 | $44M | 2.1M | 20.75 |
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| Helios Technologies (HLIO) | 5.2 | $42M | 780k | 53.49 |
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| Siteone Landscape Supply (SITE) | 5.2 | $41M | +17% | 330k | 124.56 |
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| Rogers Corporation (ROG) | 5.0 | $40M | NEW | 437k | 91.57 |
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| Eagle Materials (EXP) | 4.3 | $34M | +83% | 165k | 206.68 |
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| Astec Industries (ASTE) | 4.3 | $34M | +12% | 787k | 43.32 |
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| Astronics Corporation (ATRO) | 4.1 | $32M | -51% | 598k | 54.24 |
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| Albany International (AIN) | 3.8 | $30M | -21% | 600k | 50.70 |
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| Apogee Enterprises (APOG) | 3.7 | $30M | +14% | 813k | 36.41 |
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| DXP Enterprises (DXPE) | 3.3 | $26M | NEW | 240k | 109.79 |
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| Masterbrand Inc-w/i (MBC) | 3.2 | $25M | 2.3M | 11.04 |
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| Cardinal Infrastructure Grou (CDNL) | 2.6 | $20M | NEW | 845k | 24.18 |
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| Clearfield (CLFD) | 2.3 | $18M | 625k | 29.15 |
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| Energy Recovery (ERII) | 1.1 | $9.1M | NEW | 677k | 13.49 |
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| Aero-swx | 0.7 | $5.5M | NEW | 155k | 35.69 |
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| Custom Truck One (CTOS) | 0.6 | $4.6M | -58% | 800k | 5.76 |
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Past Filings by ACK Asset Management
SEC 13F filings are viewable for ACK Asset Management going back to 2011
- ACK Asset Management 2025 Q4 filed Feb. 13, 2026
- ACK Asset Management 2025 Q3 filed Nov. 14, 2025
- ACK Asset Management 2025 Q2 filed Aug. 13, 2025
- ACK Asset Management 2025 Q1 filed May 13, 2025
- ACK Asset Management 2024 Q4 filed Feb. 13, 2025
- ACK Asset Management 2024 Q3 filed Nov. 13, 2024
- ACK Asset Management 2024 Q2 filed Aug. 13, 2024
- ACK Asset Management 2024 Q1 filed May 14, 2024
- ACK Asset Management 2023 Q3 filed Nov. 13, 2023
- ACK Asset Management 2023 Q2 restated filed Aug. 15, 2023
- ACK Asset Management 2023 Q2 filed Aug. 14, 2023
- ACK Asset Management 2023 Q1 filed May 12, 2023
- ACK Asset Management 2022 Q4 filed Feb. 14, 2023
- ACK Asset Management 2022 Q3 filed Nov. 14, 2022
- ACK Asset Management 2022 Q2 filed Aug. 15, 2022
- ACK Asset Management 2022 Q1 filed May 13, 2022