ACK Asset Management LLC

Q4 2025 13F Holdings

  • Location
    greenwich, CT
  • Num holdings

    23

  • Value ($000)

    $796,757

  • Date Filed
    02/13/2026
  • Form type
    13F-HR
  • CIK
    0001510940
  • All SEC filings
  • Note
    Holdings aggregated across “other managers” listed in original SEC filing, see here for detailed holdings broken out by other managers
Compare Q4 2025 to
Select Quarter
Issuer Name
Class
CUSIP
VALUE
%
Shares
Principal
Option Type
MTRN

MTRN

COM
$59.03M
7 %

474,800

---

GVA

COM
$57.68M
7 %

500,000

WMS

WMS

COM
$56.48M
7 %

390,000

ATS

ATS

COM
$50.84M
6 %

1,846,196

CNM

CNM

COM
$46.77M
6 %

900,000

ENS

ENS

COM
$44.66M
6 %

304,324

1GSN

NOVT

COM
$44.62M
6 %

375,000

---

JHX

COM
$43.58M
6 %

2,100,000

HLIO

HLIO

COM
$41.74M
5 %

780,378

SITE

SITE

COM
$41.1M
5 %

330,000

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