ACK Asset Management
Latest statistics and disclosures from ACK Asset Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are MTRN, WMS, ATS, ROG, HLIO, and represent 34.41% of ACK Asset Management's stock portfolio.
- Added to shares of these 9 stocks: LFUS (+$46M), CTS (+$28M), SWIM (+$28M), MTASF (+$22M), MBC (+$12M), ROG, CLFD, DXPE, CDNL.
- Started 3 new stock positions in CTS, LFUS, SWIM.
- Reduced shares in these 7 stocks: , ATRO (-$32M), AIN (-$30M), GVA (-$30M), APOG (-$30M), , CTOS.
- Sold out of its positions in AIN, APOG, ATRO, CTOS, ERII, ENS.
- ACK Asset Management was a net seller of stock by $-35M.
- ACK Asset Management has $801M in assets under management (AUM), dropping by 0.55%.
- Central Index Key (CIK): 0001510940
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Portfolio Holdings for ACK Asset Management
ACK Asset Management holds 20 positions in its portfolio as reported in the March 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Materion Corporation (MTRN) | 8.6 | $69M | 475k | 144.65 |
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| Advanced Drain Sys Inc Del (WMS) | 6.7 | $54M | 390k | 137.13 |
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| Ats (ATS) | 6.5 | $52M | 1.8M | 28.20 |
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| Rogers Corporation (ROG) | 6.4 | $51M | +8% | 475k | 107.33 |
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| Helios Technologies (HLIO) | 6.3 | $51M | 780k | 64.71 |
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| Littelfuse (LFUS) | 5.7 | $46M | NEW | 135k | 339.35 |
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| Core & Main (CNM) | 5.5 | $45M | 900k | 49.40 |
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| Novanta (NOVT) | 5.5 | $44M | 375k | 118.11 |
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| Siteone Landscape Supply (SITE) | 5.5 | $44M | 330k | 133.11 |
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| Astec Industries (ASTE) | 5.3 | $42M | 787k | 53.84 |
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| James Hardie Inds Plc F (JHX) | 5.0 | $40M | 2.1M | 18.94 |
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| DXP Enterprises (DXPE) | 4.5 | $36M | +8% | 260k | 139.73 |
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| Cardinal Infrastructure Grou (CDNL) | 4.3 | $35M | +3% | 874k | 39.66 |
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| Eagle Materials (EXP) | 3.9 | $31M | 165k | 189.45 |
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| Masterbrand Inc-w/i (MBC) | 3.8 | $31M | +60% | 3.7M | 8.31 |
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| Granite Construction (GVA) | 3.7 | $30M | -50% | 250k | 119.88 |
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| CTS Corporation (CTS) | 3.5 | $28M | NEW | 584k | 47.76 |
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| Latham Group (SWIM) | 3.5 | $28M | NEW | 5.2M | 5.37 |
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| Aero-swx (MTASF) | 3.3 | $27M | +435% | 830k | 32.30 |
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| Clearfield (CLFD) | 2.4 | $20M | +17% | 735k | 26.47 |
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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 2026 Q1 filed May 15, 2026
- 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