ACK Asset Management LLC reported 21 holdings worth US$856M as of Jun 30, 2026 (Form 13F)
As of Jun 30, 2026 · Filed Aug 13, 2026
ACK Asset Management LLC reported 21 holdings worth US$856M as of Jun 30, 2026. Largest: Advanced Drainage Systems, Inc., Helios Technologies, Inc. and Littelfuse, Inc. Filed Aug 13, 2026 (Form 13F).
- Holdings
- 21
- Value as reported
- US$856M
The filing in full
| Company | Shares | Value as reported | % of portfolio |
|---|---|---|---|
| Advanced Drainage Systems, Inc. | 390K | US$61.2M | 7.1% |
| Helios Technologies, Inc. | 681K | US$60.8M | 7.1% |
| Littelfuse, Inc. | 125K | US$56.9M | 6.6% |
| Garrett Motion Inc. | 1.5M | US$54.3M | 6.3% |
| Core & Main, Inc. | 1.09M | US$52.6M | 6.1% |
| Eagle Materials Inc | 220K | US$49.5M | 5.8% |
| Ats Corporation | 1.5M | US$43.2M | 5.0% |
| Astec Industries, Inc. | 690K | US$42.2M | 4.9% |
| Materion Corporation | 135K | US$40.1M | 4.7% |
| Borgwarner Inc. | 600K | US$39.8M | 4.7% |
| Dnow Inc. | 3M | US$38.9M | 4.5% |
| Masterbrand, Inc. | 3.7M | US$38.1M | 4.4% |
| Siteone Landscape Supply, Inc. | 330K | US$37.8M | 4.4% |
| Latham Group, Inc. | 5.66M | US$36.6M | 4.3% |
| Clearfield, Inc. | 810K | US$32.2M | 3.8% |
| Shoals Technologies Group, Inc. | 2.25M | US$22.3M | 2.6% |
| Equipmentshare.com Inc | 1.06M | US$20.9M | 2.4% |
| Methode Electronics, Inc. | 878K | US$16.6M | 1.9% |
| Cts Corporation | 0 | US$0 | 0.00% |
| Cardinal Infrastructure Group Inc. | 0 | US$0 | 0.00% |
| Novanta Inc. | 0 | US$0 | 0.00% |
| Dxp Enterprises, Inc. | 0 | US$0 | 0.00% |
| Rogers Corporation | 0 | US$0 | 0.00% |
| Granite Construction Incorporated | 0 | US$0 | 0.00% |