Fund Holdings — ACK Asset Management LLC

Total Portfolio Value:
$801.14M
Total Bought:
$164.49M
Total Sold:
$178.54M
Net Transaction:
-$14.04M
Securities
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SharesValue
Q4 2025
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Q1 2026
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Change
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Q4 2025
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Q1 2026
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Weight (%)
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Change
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Materion Corporation(MTRN)474,800474,8000$59.03M$68.68M8.57%+$9.65M
Advanced Drainage Systems, Inc.(WMS)390,000390,0000$56.48M$53.48M6.68%-$3.00M
ATS Corporation(ATS)1,846,1961,846,1960$50.84M$52.06M6.50%+$1.22M
Rogers Corporation(ROG)436,707475,000+38,293$39.99M$50.98M6.36%+$10.99M
Helios Technologies, Inc.(HLIO)780,378780,3780$41.74M$50.50M6.30%+$8.76M
Littelfuse, Inc.(LFUS)0135,000+135,000$0$45.81M5.72%+$45.81M
Core & Main, Inc.(CNM)900,000900,0000$46.77M$44.46M5.55%-$2.31M
Novanta Inc.(NOVT)375,000375,0000$44.62M$44.29M5.53%-$330.0K
SiteOne Landscape Supply, Inc.(SITE)330,000330,0000$41.10M$43.93M5.48%+$2.82M
Aste786,500786,5000$34.07M$42.35M5.29%+$8.27M
Jhx
ORD SHS
2,100,0002,100,0000$43.58M$39.77M4.96%-$3.80M
DXP Enterprises, Inc.(DXPE)240,000260,000+20,000$26.35M$36.33M4.53%+$9.98M
Cardinal Infrastructure Group Inc.(CDNL)844,591874,000+29,409$20.42M$34.66M4.33%+$14.24M
Eagle Materials Inc.(EXP)165,000165,0000$34.10M$31.26M3.90%-$2.84M
MasterBrand, Inc.(MBC)2,300,0003,700,000+1,400,000$25.39M$30.75M3.84%+$5.36M
Granite Construction Incorporated(GVA)500,000250,000-250,000$57.67M$29.97M3.74%-$27.70M
CTS Corporation(CTS)0584,000+584,000$0$27.89M3.48%+$27.89M
Latham Group, Inc.(SWIM)05,160,000+5,160,000$0$27.71M3.46%+$27.71M
Aero-Swx154,851830,000+675,149$5.53M$26.81M3.35%+$21.28M
Clearfield, Inc.(CLFD)625,200735,200+110,000$18.22M$19.46M2.43%+$1.24M
Ain600,0000-600,000$30.42M$0—-$30.42M
EnerSys(ENS)304,3240-304,324$44.66M$0—-$44.66M
Apog813,0000-813,000$29.60M$0—-$29.60M
Energy Recovery, Inc.(ERII)677,2510-677,251$9.14M$0—-$9.14M
Atro597,4690-597,469$32.41M$0—-$32.41M
Custom Truck One Source, Inc.(CTOS)800,1360-800,136$4.61M$0—-$4.61M
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