ACK Asset Management LLC

CIK: 0001510940SEC EDGAR →

Portfolio Value

$796.8M

Holdings

23

As of

Q4 2025

New Positions

5

Closed Positions

3

Portfolio Value History

Top 10 Holdings

Rank	Stock	Shares	Value	% of Portfolio
1	MTRN MTRN	474,800	$59.0M	7.41%
2	GVA GVA	500,000	$57.7M	7.24%
3	WMS WMS	390,000	$56.5M	7.09%
4	ATS ATS	1,846,196	$50.8M	6.38%
5	CNM CNM	900,000	$46.8M	5.87%
6	ENS ENS	304,324	$44.7M	5.61%
7	1GSN NOVT	375,000	$44.6M	5.60%
8	JHX JHX	2,100,000	$43.6M	5.47%
9	HLIO HLIO	780,378	$41.7M	5.24%
10	SITE SITE	330,000	$41.1M	5.16%

Quarterly Changes

Top Buys

$44.6M

RG6NEW

$40.0M

$26.3M

$20.4M

EXP↑ Increased

$13.1M

Top Sells

JBTCLOSED

$49.2M

CTRICLOSED

$29.1M

ATRO↓ Decreased

$23.7M

ENS↓ Decreased

$21.3M

NPKICLOSED

$17.8M

New Positions (6)

$44.6M · 375K shares

$40.0M · 437K shares

$26.3M · 240K shares

$20.4M · 845K shares

$9.1M · 677K shares

AERO-SWX

$5.5M · 155K shares

Closed Positions (3)

$49.2M · 351K shares

$29.1M · 1.4M shares

$17.8M · 1.6M shares

Sector Breakdown

Sector	# Holdings	Value	%
Industrials	14	$495.9M	62.2%
Basic Materials	3	$136.7M	17.2%
Unknown	3	$90.1M	11.3%
Consumer Cyclical	2	$55.8M	7.0%
Technology	1	$18.2M	2.3%