Ack Asset Management LLC Top Holdings and 13F Report (2021) About Ack Asset Management LLCInvestment ActivityAck Asset Management LLC has $856.33 million in total holdings as of September 30, 2021.Ack Asset Management LLC owns shares of 21 different stocks, but just 15 companies or ETFs make up 80% of its holdings.Approximately 29.90% of the portfolio was purchased this quarter.About 41.39% of the portfolio was sold this quarter.This quarter, Ack Asset Management LLC has purchased 20 new stocks and bought additional shares in 5 stocks.Ack Asset Management LLC sold shares of 5 stocks and completely divested from 6 stocks this quarter.Largest Holdings Advanced Drainage Systems $61,214,400HLIO $60,779,250Littelfuse $56,916,250JHX $54,978,000GTX $54,345,000 Largest New Holdings this Quarter 366505105 - GTX $54,345,000 Holding099724106 - BorgWarner $39,840,000 Holding67011P100 - DNOW $38,910,000 HoldingG8060N102 - Sensata Technologies $28,644,000 Holding82489W107 - Shoals Technologies Group $22,324,500 Holding Largest Purchases this Quarter GTX 1,500,000 shares (about $54.35M)BorgWarner 600,000 shares (about $39.84M)DNOW 3,000,000 shares (about $38.91M)Sensata Technologies 600,000 shares (about $28.64M)Shoals Technologies Group 2,255,000 shares (about $22.32M) Largest Sales this Quarter Materion 339,800 shares (about $101.05M)ATS 346,196 shares (about $9.96M)HLIO 99,378 shares (about $8.87M)Astec Industries 96,224 shares (about $5.89M)Littelfuse 10,000 shares (about $4.55M) Sector Allocation Over TimeMap of 500 Largest Holdings ofAck Asset Management LLC Selling Neutral Buying Latest 13F Holdings and Changes Since Previous Quarterly FilingIssuer NameHoldings ValueApproximate Purchase/SaleChange in SharesShares Held% of PortfolioSectorWMSAdvanced Drainage Systems$61,214,4000.0%390,0007.1%IndustrialsHLIO$60,779,250$8,869,487 â–¼-12.7%681,0007.1%COMLFUSLittelfuse$56,916,250$4,553,300 â–¼-7.4%125,0006.6%TechnologyJHX$54,978,0000.0%2,100,0006.4%COMGTX$54,345,000$54,345,000 â–²New Holding1,500,0006.3%COMCNMCore & Main$52,592,500$9,167,500 â–²21.1%1,090,0006.1%IndustrialsEXPEagle Materials$49,500,000$12,375,000 â–²33.3%220,0005.8%MaterialsATSATS$43,170,000$9,963,521 â–¼-18.8%1,500,0005.0%IndustrialsASTEAstec Industries$42,237,988$5,887,946 â–¼-12.2%690,2764.9%IndustrialsMTRNMaterion$40,147,650$101,053,122 â–¼-71.6%135,0004.7%MaterialsBWABorgWarner$39,840,000$39,840,000 â–²New Holding600,0004.7%Consumer DiscretionaryDNOWDNOW$38,910,000$38,910,000 â–²New Holding3,000,0004.5%IndustrialsMBCMasterBrand$38,073,0000.0%3,700,0004.4%IndustrialsSITESiteOne Landscape Supply$37,755,3000.0%330,0004.4%IndustrialsSWIMLatham Group$36,620,200$3,235,000 â–²9.7%5,660,0004.3%Consumer DiscretionaryCLFDClearfield$32,237,858$2,984,250 â–²10.2%810,2003.8%TechnologySTSensata Technologies$28,644,000$28,644,000 â–²New Holding600,0003.3%IndustrialsAERO-SWX$28,460,408$6,638,571 â–²30.4%1,082,5003.3%COMSHLSShoals Technologies Group$22,324,500$22,324,500 â–²New Holding2,255,0002.6%IndustrialsEQPT$20,934,558$20,934,558 â–²New Holding1,064,8302.4%COMMEIMethode Electronics$16,646,175$16,646,175 â–²New Holding877,5001.9%TechnologyROGRogers$0$50,981,750 â–¼-100.0%00.0%TechnologyNOVTNovanta$0$44,291,250 â–¼-100.0%00.0%TechnologyDXPEDXP Enterprises$0$36,329,800 â–¼-100.0%00.0%IndustrialsCDNL$0$34,658,470 â–¼-100.0%00.0%COMGVAGranite Construction$0$29,970,000 â–¼-100.0%00.0%IndustrialsCTSCTS$0$27,891,840 â–¼-100.0%00.0%TechnologyShowing largest 100 holdings. View all holdings. More Institutional Buying and Selling Information SEC Filings and Trading Data SEC Filings 13F Filings Top 13F Buys Top 13F Sells Unlock superior investment research and tools. Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools and reports. Get MarketBeat All Access MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. 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