ACK Asset Management LLC

13F Filings History

Latest 13F report
Q2 2025 - Aug 13, 2025
Value $
$761M
Signature - Title
Andres Aguirre - CCO
Location
Greenwich, CT
Summary
This page shows a list of all the recent 13F filings made by ACK Asset Management LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. ACK Asset Management LLC reported 21 stock holdings with total value $761M as of Q2 2025. Top holdings included ATRO, ATS, DY, GVA, and ENS.
Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Date Filed
Q2 2025 21 $761M +$231M -$222M +$9.15M ATRO, ATS, DY, GVA, ENS 13F-HR 8/13/2025, 09:16 AM
Q1 2025 20 $609M +$55.6M -$115M -$59.3M DY, ENS, MTZ, ATS, ATRO 13F-HR 5/13/2025, 09:17 AM
Q4 2024 22 $746M +$169M -$223M -$53.4M DY, MTZ, ATS, ENS, ROG 13F-HR 2/13/2025, 09:58 AM
Q3 2024 18 $809M +$92.2M -$126M -$33.9M DY, MTZ, ENS, ROG, ATS 13F-HR 11/13/2024, 12:01 PM
Q2 2024 19 $810M +$214M -$259M -$45.7M DY, MTZ, ENS, ROG, CNM 13F-HR 8/13/2024, 11:33 AM
Q1 2024 20 $858M +$55.9M -$74.6M -$18.8M CNM, DY, ATKR, MTZ, ENS 13F-HR 5/14/2024, 10:05 AM
Q4 2023 21 $831M +$181M -$88.7M +$92M MTRN, DY, MTZ, ENS, ATKR 13F-HR 2/13/2024, 12:06 PM
Q3 2023 24 $688M +$41.8M -$57.5M -$15.7M ENS, ATKR, ATS, MTRN, ROG 13F-HR 11/13/2023, 12:13 PM
Q2 2023 25 $803M +$113M -$51.6M +$61M ENS, MTZ, ROG, ATS, ATKR Restatement 8/14/2023, 09:06 PM
Q1 2023 23 $655M +$100M -$12.5M +$87.7M ROG, MTRN, ENS, EME, DY 13F-HR 5/12/2023, 11:43 AM
Q4 2022 25 $545M +$204M -$29.7M +$174M MTRN, EME, ROG, ENS, DY 13F-HR 2/14/2023, 01:06 PM
Q3 2022 23 $378M +$79.7M -$42.2M +$37.5M EME, MTRN, ENS, ATSAFXXXX, ALNT 13F-HR 11/14/2022, 08:30 AM
Q2 2022 21 $357M +$97.9M -$33.8M +$64.1M MTRN, VMI, EME, ATSAFXXXX, JBT 13F-HR 8/15/2022, 12:25 PM
Q1 2022 24 $461M ENS, MTRN, BLDR, TGI, VMI 13F-HR 5/13/2022, 12:00 PM
Q4 2021 13 $214M $0 $0 ENS, RMBL, TGI, ATSAFXXXX, MBUU 13F-HR 2/14/2022, 10:49 AM
Q3 2021 21 $293M +$63.1M -$26.5M +$36.6M ENS, TGI, RMBL, MTRN, THRM 13F-HR 11/12/2021, 12:38 PM
Q2 2021 18 $188M $0 $0 TGI, MTRN, THRM, ATSAFXXXX, VMI 13F-HR 7/13/2021, 12:02 PM
Q1 2021 9 $100M $0 $0 TGI, MTRN, THRY, ATCX, ATSAFXXXX 13F-HR 5/14/2021, 12:00 PM
Q4 2020 9 $42.5M ATSAFXXXX, JBT, DOOR, BBCP, ACAM 13F-HR 2/12/2021, 01:59 PM
Q3 2020 14 $145M DY, ROG, ENS, ALNT, BBCP 13F-HR 11/13/2020, 11:40 AM
Q2 2020 13 $157M DY, ROG, ENS, PWR, ALNT 13F-HR 8/13/2020, 02:40 PM
Q1 2020 9 $57.3M PWR, BMCH, LUNA, KW, RP 13F-HR 5/14/2020, 02:21 PM
Q4 2019 17 $260M +$260M +$260M DY, ENS, ATSG, PWR, BBCP 13F-HR 2/12/2020, 03:12 PM
Q3 2019 18 $281M +$128M -$7.43M +$121M ENS, ATSG, PWR, BBCP, DY Restatement 11/13/2019, 11:33 AM
Q2 2019 20 $270M +$163M -$13.1M +$150M BBCP, ENS, USCR, BMCH, BLD 13F-HR 8/14/2019, 11:26 AM
Q1 2019 24 $309M +$135M -$25.2M +$110M ATRO, ROG, WMS, PWR, SAIC 13F-HR 5/13/2019, 04:09 PM
Q4 2018 28 $292M +$82.1M -$24.7M +$57.4M ATRO, DY, ATSG, ENS, WMS 13F-HR 2/12/2019, 12:29 PM
Q3 2018 26 $364M +$42.2M -$32M +$10.1M ATRO, ENS, WMS, ROG, DY 13F-HR 11/9/2018, 02:00 PM
Q2 2018 25 $289M +$86.1M -$36.7M +$49.4M ATRO, ENS, ROG, PLYA, ATSG 13F-HR 8/13/2018, 11:13 AM
Q1 2018 29 $398M +$101M -$11.6M +$89.8M WMS, DY, ATRO, ENS, MCRN 13F-HR 5/14/2018, 02:31 PM
Q4 2017 32 $445M +$169M -$59.8M +$110M DY, ATRO, WMS, MCRN, GWR 13F-HR 2/12/2018, 02:08 PM
Q3 2017 30 $362M +$92.4M -$48M +$44.4M DY, EXP, ATRO, KW, ROG 13F-HR 11/13/2017, 10:00 AM
Q2 2017 33 $443M +$134M -$51.4M +$82.6M DY, ROG, USCR, WMS, KW 13F-HR 8/14/2017, 01:21 PM
Q1 2017 24 $286M +$147M -$405K +$147M WMS, ROG, GWR, VMI, KW 13F-HR 5/12/2017, 10:22 AM
Q4 2016 30 $340M +$122M -$30.6M +$90.9M DY, MRCY, LDOS, BMCH, WMS 13F-HR 2/13/2017, 10:54 AM
Q3 2016 31 $330M +$89.2M -$37.1M +$52.2M DY, MRCY, WMS, BMCH, ROG 13F-HR 11/10/2016, 03:54 PM
Q2 2016 27 $336M +$110M -$18.9M +$91.2M DY, WMS, MRCY, EXP, BMCH 13F-HR 8/15/2016, 12:35 PM
Q1 2016 26 $254M +$126M -$30.2M +$95.5M EXP, DY, MRCY, WAGE, WMS 13F-HR 5/13/2016, 05:34 PM
Q4 2015 21 $195M +$68.5M -$30.8M +$37.7M USCR, MRCY, CSU, DY, WAGE 13F-HR 2/11/2016, 02:10 PM
Q3 2015 22 $239M +$62.5M -$50.8M +$11.7M USCR, BKD, DY, LBYYQ, MRCY 13F-HR 11/13/2015, 05:46 PM
Q2 2015 32 $358M +$119M -$24.5M +$94.7M DY, USCR, LBYYQ, CLH, PWR 13F-HR 8/11/2015, 04:26 PM
Q1 2015 33 $317M +$128M -$10.6M +$117M LBYYQ, WMS, DY, CLH, USCR 13F-HR 5/14/2015, 04:36 PM
Q4 2014 32 $277M +$59.6M -$57.5M +$2.12M LBYYQ, BKD, DY, WMS, USCR 13F-HR 2/12/2015, 03:36 PM
Q3 2014 29 $278M +$63.9M -$11.3M +$52.6M DY, LBYYQ, BKD, ROG, USCR 13F-HR 11/14/2014, 11:57 AM
Q2 2014 31 $333M +$80.3M -$2.46M +$77.9M ROG, DY, LBYYQ, BKD, USCR 13F-HR 8/4/2014, 05:07 PM
Q1 2014 31 $304M +$100M -$17.2M +$82.9M DY, ROG, LBYYQ, BKD, TRIB 13F-HR 5/9/2014, 10:05 AM
Q4 2013 34 $303M ROG, BKD, LBYYQ, DY, ATRO 13F-HR 2/11/2014, 08:56 AM