13F HOLDINGS REPORT
ACK Asset Management LLC
Quarter ended Q3 2025 · Filed November 14, 2025 · Accession 0001510940-25-000006
Total Value
$799.1M
Positions
20
Other Managers
0
Confidential Omitted
No
Holdings (20)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | ENS | ENS | 584,324 | $66.0M | 8.26% |
| 2 | MTRN | MTRN | 524,800 | $63.4M | 7.93% |
| 3 | GVA | GVA | 545,000 | $59.8M | 7.48% |
| 4 | ATRO | ATROB | 1,230,000 | $56.1M | 7.02% |
| 5 | WMS | 00790R104 | 390,000 | $54.1M | 6.77% |
| 6 | JBTM | JBTM | 350,546 | $49.2M | 6.16% |
| 7 | CNM | CNM | 900,000 | $48.4M | 6.06% |
| 8 | ATS | ATS | 1,846,196 | $48.4M | 6.05% |
| 9 | AIN | 012348108 | 760,000 | $40.5M | 5.07% |
| 10 | JHX | G4253H101 | 2,100,000 | $40.3M | 5.05% |
| 11 | HLIO | HLIO | 770,000 | $40.1M | 5.02% |
| 12 | SITE | SITE | 280,000 | $36.1M | 4.51% |
| 13 | ASTE | 046224101 | 701,500 | $33.8M | 4.22% |
| 14 | APOG | APOG | 708,000 | $30.8M | 3.86% |
| 15 | MBC | MBC | 2,300,000 | $30.3M | 3.79% |
| 16 | CTRI | CTRI | 1,375,000 | $29.1M | 3.64% |
| 17 | CLFD | CLFD | 625,200 | $21.5M | 2.69% |
| 18 | EXP | 26969P108 | 90,000 | $21.0M | 2.62% |
| 19 | NPKI | NPKI | 1,576,808 | $17.8M | 2.23% |
| 20 | CTOS | CTOS | 1,925,000 | $12.4M | 1.55% |