ACK Asset Management LLC 13F holdings, Q1 2025
Holdings as of March 31, 2025 · filings on SEC EDGAR · latest filing →
ACK Asset Management LLC disclosed 20 US equity positions worth $609.0m in its Q1 2025 13F filing. The largest position was DY at 9.6% of the reported book, followed by ENS and MTZ. Against the Q4 2024 filing, it opened 3 new positions, added to 2 and reduced 13 among the top 20 holdings.
What did ACK Asset Management LLC own in Q1 2025? Top 20 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q4 2024 |
|---|---|---|---|---|---|---|---|
| 1 | DY DYCOM INDUSTRIES INC | Industrials | 9.6% | $58.3m | 382,800 | -14% | reduced |
| 2 | ENS ENERSYS | Industrials | 9.4% | $57.2m | 624,324 | -7% | reduced |
| 3 | MTZ MASTEC INC | Industrials | 8.9% | $54.0m | 462,700 | -13% | reduced |
| 4 | ATS ATS CORP | 8.2% | $50.2m | 2,013,196 | -4% | reduced | |
| 5 | ATRO ASTRONICS CORP | Industrials | 8.2% | $49.8m | 2,060,000 | 0% | held |
| 6 | JBTM JBT MAREL CORPORATION | Industrials | 7.4% | $45.2m | 369,800 | -8% | reduced |
| 7 | MTRN MATERION CORP | Basic Materials | 6.2% | $37.5m | 459,200 | -7% | reduced |
| 8 | ROG ROGERS CORP | Technology | 5.7% | $34.9m | 517,500 | -11% | reduced |
| 9 | MYRG MYR GROUP INC | Industrials | 5.2% | $31.6m | 279,100 | 40% | added |
| 10 | CECO CECO ENVIRONMENTAL CORP | Industrials | 4.5% | $27.4m | 1,201,000 | -6% | reduced |
| 11 | MIR MIRION TECHNOLOGIES INC | Industrials | 3.9% | $23.5m | 1,618,356 | -11% | reduced |
| 12 | CLFD CLEARFIELD INC | Technology | 3.4% | $20.4m | 687,200 | -5% | reduced |
| 13 | CTRI CENTURI HOLDINGS INC. | Utilities | 3.3% | $20.0m | 1,220,591 | -6% | reduced |
| 14 | 37M MRC GLOBAL INC | 3.0% | $18.0m | 1,565,000 | 185% | added | |
| 15 | MBC MASTERBRAND INC | Consumer Cyclical | 2.8% | $17.0m | 1,302,500 | -12% | reduced |
| 16 | BIRD CONSTRUCTION INC | 2.8% | $17.0m | 1,120,800 | – | new | |
| 17 | MTRX MATRIX SERVICE CO | 2.4% | $14.7m | 1,184,100 | 0% | held | |
| 18 | GVA GRANITE CONSTRUCTION INC | Industrials | 2.4% | $14.4m | 190,700 | -33% | reduced |
| 19 | SITE SITEONE LANDSCAPE SUPPLY INC | Industrials | 2.0% | $12.1m | 100,000 | – | new |
| 20 | LASR NLIGHT INC | Technology | 1.0% | $5.9m | 754,000 | – | new |
Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.