ACK Asset Management LLC
- SEC CIK
- 0001510940
- Latest filing
- Aug 13, 2026
Holdings in Q2 2023
Holdings as of Jun 30, 2023, filed Aug 15, 2023. Long positions only; changes compare share counts with Q1 2023.
- Positions
- 23
- 0 vs. Q1 2023
- Portfolio value
- $802.9M
- +$147.8M (+22.6%) vs. Q1 2023
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| ENSEnerSys | COM | 572,500 | $62.1M | 7.7% | 00.0% | Unchanged | History |
| MTZMastec Inc | COM | 515,000 | $60.8M | 7.6% | +34,800+7.2% | Added | History |
| ROGRogers Corp | COM | 370,000 | $59.9M | 7.5% | 00.0% | Unchanged | History |
| ATSATS Corp | COM | 1,221,341 | $56.3M | 7.0% | +146,341+13.6% | Added | History |
| ATKRAtkore Inc. | COM | 360,000 | $56.1M | 7.0% | +75,000+26.3% | Added | History |
| EMEEMCOR Group, Inc. | Stock | 300,000 | $55.4M | 6.9% | 00.0% | Unchanged | History |
| MTRNMATERION Corp | COM | 480,500 | $54.9M | 6.8% | 00.0% | Unchanged | History |
| ZWSZurn Elkay Water Solutions Corp | COM | 1,700,000 | $45.7M | 5.7% | +409,096+31.7% | Added | History |
| NEOGNeogen Corp | COM | 2,000,000 | $43.5M | 5.4% | +410,000+25.8% | Added | History |
| HLIOHelios Technologies, Inc. | COM | 635,000 | $42.0M | 5.2% | +380,000+149.0% | Added | History |
| CNMCore & Main, Inc. | CL A | 1,155,000 | $36.2M | 4.5% | +330,000+40.0% | Added | History |
| ALNTAllient Inc | COM | 807,400 | $32.2M | 4.0% | 00.0% | Unchanged | History |
| ATROAstronics Corp | COM | 1,425,000 | $28.3M | 3.5% | +155,000+12.2% | Added | History |
| ERIIEnergy Recovery, Inc. | COM | 877,400 | $24.5M | 3.1% | 00.0% | Unchanged | History |
| SMRTSmartRent, Inc. | COM CL A | 5,905,000 | $22.6M | 2.8% | 00.0% | Unchanged | History |
| THRYThryv Holdings, Inc. | COM NEW | 900,509 | $22.2M | 2.8% | 00.0% | Unchanged | History |
| TITNTitan Machinery Inc. | COM | 660,000 | $19.5M | 2.4% | +132,351+25.1% | Added | History |
| LUNALuna Innovations Inc | COM | 1,843,859 | $16.8M | 2.1% | 00.0% | Unchanged | History |
| MCFTMasterCraft Boat Holdings, Inc. | COM | 523,500 | $16.0M | 2.0% | 00.0% | Unchanged | History |
| VMIValmont Industries Inc | COM | 50,000 | $14.6M | 1.8% | +50,000 | New | History |
| Mda CN55292X108 | COM | 2,070,000 | $12.8M | 1.6% | +655,900+46.4% | Added | – |
| ONEWOneWater Marine Inc. | CL A COM | 314,600 | $11.4M | 1.4% | 00.0% | Unchanged | History |
| SLCAU.S. Silica Holdings, Inc. | COM | 750,000 | $9.10M | 1.1% | +750,000 | New | History |
Sold out since Q1 2023 (2)
Positions held at the end of Q1 2023 that are gone from this filing.