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ACK Asset Management LLC

SEC CIK
0001510940
Latest filing
Aug 13, 2026

Holdings in Q2 2024

Holdings as of Jun 30, 2024, filed Aug 13, 2024. Long positions only; changes compare share counts with Q1 2024.

Institution overview
Positions
19
−1 vs. Q1 2024
Portfolio value
$810.3M
−$48.0M (−5.6%) vs. Q1 2024
Filed
Aug 13, 2024
SEC
Holdings of ACK Asset Management LLC in Q2 2024
SecurityClassSharesValue% of portfolioShare changeActionHistory
DYDycom Industries IncCOM535,500$90.4M11.2%00.0%UnchangedHistory
MTZMastec IncCOM772,300$82.6M10.2%00.0%UnchangedHistory
ENSEnerSysCOM715,000$74.0M9.1%00.0%UnchangedHistory
ROGRogers CorpCOM590,000$71.2M8.8%+70,000+13.5%AddedHistory
CNMCore & Main, Inc.CL A1,352,000$66.2M8.2%00.0%UnchangedHistory
ATSATS CorpCOM2,000,000$64.6M8.0%+460,000+29.9%AddedHistory
MTRNMATERION CorpCOM505,500$54.7M6.7%+25,000+5.2%AddedHistory
GVAGranite Construction IncCOM825,000$51.1M6.3%+825,000NewHistory
ARRYArray Technologies, Inc.COM SHS4,282,000$43.9M5.4%+1,650,400+62.7%AddedHistory
ATROAstronics CorpCOM2,060,000$41.3M5.1%+385,000+23.0%AddedHistory
ESIElement Solutions IncCOM1,500,000$40.7M5.0%+1,500,000NewHistory
MIRMirion Technologies, Inc.COM CL A3,297,580$35.4M4.4%+3,297,580NewHistory
CLFDClearfield, Inc.COM695,000$26.8M3.3%+30,000+4.5%AddedHistory
NEOGNeogen CorpCOM1,659,400$25.9M3.2%−400,000−19.4%ReducedHistory
CECOCeco Environmental CorpCOM821,200$23.7M2.9%+821,200NewHistory
FIPFTAI Infrastructure Inc.COMMON STOCK1,025,000$8.85M1.1%+1,025,000NewHistory
THRYThryv Holdings, Inc.COM NEW245,000$4.37M0.5%−517,288−67.9%ReducedHistory
LUNALuna Innovations IncCOM779,000$2.49M0.3%−450,000−36.6%ReducedHistory
MDAMDA Space Ltd.COM211,600$2.12M0.3%+211,600NewHistory

Sold out since Q1 2024 (7)

Positions held at the end of Q1 2024 that are gone from this filing.

Positions of ACK Asset Management LLC sold out since Q1 2024
SecurityClassShares in Q1 2024Value in Q1 2024% of portfolio in Q1 2024History
ATKRAtkore Inc.COM390,000$74.2M8.6%History
JBIJanus International Group, Inc.COMMON STOCK3,394,400$51.4M6.0%History
ZWSZurn Elkay Water Solutions CorpCOM1,260,000$42.2M4.9%History
Mda CN55292X108COM2,950,000$32.1M3.7%–
ALNTAllient IncCOM527,000$18.8M2.2%History
TITNTitan Machinery Inc.COM510,000$12.7M1.5%History
SMRTSmartRent, Inc.COM CL A4,170,000$11.2M1.3%History