Ack Asset Management LLC

Investment Portfolio & 13F Holdings Analysis

About

ACK Asset Management LLC is an institutional investment manager that filed its latest Form 13F for 2025Q1, reporting 20 holdings worth $0.6 billion. Form 13F filings provide transparency into the equity holdings of institutional investment managers with over $100 million in assets under management. This page displays the most recent portfolio holdings, allowing investors to track position changes, new investments, and portfolio composition.

AI_NATIVE detailed information: This accession holds the following tickers:[
  "MBC",
  "MTRN",
  "MTRX",
  "MRC",
  "MYRG",
  "LASR",
  "MIR",
  "ROG",
  "SITE",
  "ATRO",
  "GVA",
  null,
  "ENS",
  "DY",
  "MTZ",
  null,
  "ATS",
  "CECO",
  "CTRI",
  "CLFD"
]

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-05-13
Total Holdings: 20
Total Value: 608959301
Accession Number: 0001510940-25-000002
Form Type: 13F-HR
CIK: ack-asset-management
Manager Name: Ack-Asset-Management

Data Enrichment

90% identified

18 identified2 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

20 positions • $608,959.301K total value

20 positions

Manager:

SEC FilingSEC DataHachi Filing

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DYCOM INDUSTRIES INC

DY|267475101

Shares:382.8K

Value:$58.3M

EnerSys

ENS|29275Y102

Shares:624.3K

Value:$57.2M

MASTEC INC

MTZ|576323109

Shares:462.7K

Value:$54.0M

ATS Corp /ATS

ATS|00217Y104

Shares:2.0M

Value:$50.2M

ASTRONICS CORP

ATRO|046433108

Shares:2.1M

Value:$49.8M

477839104

Shares:369.8K

Value:$45.2M

MATERION Corp

MTRN|576690101

Shares:459.2K

Value:$37.5M

ROGERS CORP

ROG|775133101

Shares:517.5K

Value:$34.9M

MYR GROUP INC.

MYRG|55405W104

Shares:279.1K

Value:$31.6M

CECO ENVIRONMENTAL CORP

CECO|125141101

Shares:1.2M

Value:$27.4M

Mirion Technologies, Inc.

MIR|60471A101

Shares:1.6M

Value:$23.5M

Clearfield, Inc.

CLFD|18482P103

Shares:687.2K

Value:$20.4M

Centuri Holdings, Inc.

CTRI|155923105

Shares:1.2M

Value:$20.0M

MRC GLOBAL INC.

MRC|55345K103

Shares:1.6M

Value:$18.0M

MasterBrand, Inc.

MBC|57638P104

Shares:1.3M

Value:$17.0M

09076P104

Shares:1.1M

Value:$17.0M

MATRIX SERVICE CO

MTRX|576853105

Shares:1.2M

Value:$14.7M

GRANITE CONSTRUCTION INC

GVA|387328107

Shares:190.7K

Value:$14.4M

SiteOne Landscape Supply, Inc.

SITE|82982L103

Shares:100.0K

Value:$12.1M

NLIGHT, INC.

LASR|65487K100

Shares:754.0K

Value:$5.9M

Instrument	Shares		Other Manager	Value
DYCOM INDUSTRIES INC(DYcusip267475101)	382.8K	QoQ -14.07% (-62.7K) YoY -28.51% (-152.7K)	All Managers (Combined)	$58.3M	QoQ -24.79% (-$19.2M) YoY -24.12% (-$18.5M)
EnerSys(ENScusip29275Y102)	624.3K	QoQ -6.95% (-46.7K) YoY -12.68% (-90.7K)	All Managers (Combined)	$57.2M	QoQ -7.81% (-$4.8M) YoY -15.34% (-$10.4M)
MASTEC INC(MTZcusip576323109)	462.7K	QoQ -12.99% (-69.1K) YoY -40.08% (-309.6K)	All Managers (Combined)	$54.0M	QoQ -25.41% (-$18.4M) YoY -25.01% (-$18.0M)
ATS Corp /ATS(ATScusip00217Y104)	2.0M	QoQ -3.82% (-80.0K) YoY +30.72% (-473.2K)	All Managers (Combined)	$50.2M	QoQ -21.33% (-$13.6M) YoY -3.35% (-$1.7M)
ASTRONICS CORP(ATROcusip046433108)	2.1M	QoQ 0.00% (+0) YoY +22.98% (+385.0K)	All Managers (Combined)	$49.8M	QoQ +51.44% (+$16.9M) YoY +56.12% (+$17.9M)
(cusip477839104)✕	369.8K	QoQ -7.55% (-30.2K) YoY NEW(+369.8K)	All Managers (Combined)	$45.2M	QoQ -11.11% (-$5.7M) YoY NEW(+$45.2M)
MATERION Corp(MTRNcusip576690101)	459.2K	QoQ -7.19% (-35.6K) YoY -4.43% (-21.3K)	All Managers (Combined)	$37.5M	QoQ -23.41% (-$11.5M) YoY -40.81% (-$25.8M)
ROGERS CORP(ROGcusip775133101)	517.5K	QoQ -10.77% (-62.5K) YoY -0.48% (-2.5K)	All Managers (Combined)	$34.9M	QoQ -40.70% (-$24.0M) YoY -43.37% (-$26.8M)
MYR GROUP INC.(MYRGcusip55405W104)	279.1K	QoQ +39.55% (+79.1K) YoY NEW(+279.1K)	All Managers (Combined)	$31.6M	QoQ +6.08% (+$1.8M) YoY NEW(+$31.6M)
CECO ENVIRONMENTAL CORP(CECOcusip125141101)	1.2M	QoQ -5.58% (-71.0K) YoY NEW(+1.2M)	All Managers (Combined)	$27.4M	QoQ -28.78% (-$11.1M) YoY NEW(+$27.4M)
Mirion Technologies, Inc.(MIRcusip60471A101)	1.6M	QoQ -10.83% (-196.6K) YoY NEW(+1.6M)	All Managers (Combined)	$23.5M	QoQ -25.90% (-$8.2M) YoY NEW(+$23.5M)
Clearfield, Inc.(CLFDcusip18482P103)	687.2K	QoQ -4.55% (-32.8K) YoY +3.33% (-22.2K)	All Managers (Combined)	$20.4M	QoQ -8.49% (-$1.9M) YoY -0.41% (-$85.0K)
Centuri Holdings, Inc.(CTRIcusip155923105)	1.2M	QoQ -6.10% (-79.4K) YoY NEW(+1.2M)	All Managers (Combined)	$20.0M	QoQ -20.30% (-$5.1M) YoY NEW(+$20.0M)
MRC GLOBAL INC.(MRCcusip55345K103)	1.6M	QoQ +184.54% (+1.0M) YoY NEW(+1.6M)	All Managers (Combined)	$18.0M	QoQ +155.60% (+$10.9M) YoY NEW(+$18.0M)
MasterBrand, Inc.(MBCcusip57638P104)	1.3M	QoQ -11.69% (-172.5K) YoY NEW(+1.3M)	All Managers (Combined)	$17.0M	QoQ -21.06% (-$4.5M) YoY NEW(+$17.0M)
(cusip09076P104)✕	1.1M	QoQ NEW(+1.1M) YoY NEW(+1.1M)	All Managers (Combined)	$17.0M	QoQ NEW(+$17.0M) YoY NEW(+$17.0M)
MATRIX SERVICE CO(MTRXcusip576853105)	1.2M	QoQ +0.35% (+4.2K) YoY NEW(+1.2M)	All Managers (Combined)	$14.7M	QoQ +4.21% (+$594.9K) YoY NEW(+$14.7M)
GRANITE CONSTRUCTION INC(GVAcusip387328107)	190.7K	QoQ -32.85% (-93.3K) YoY NEW(+190.7K)	All Managers (Combined)	$14.4M	QoQ -42.27% (-$10.5M) YoY NEW(+$14.4M)
SiteOne Landscape Supply, Inc.(SITEcusip82982L103)	100.0K	QoQ NEW(+100.0K) YoY NEW(+100.0K)	All Managers (Combined)	$12.1M	QoQ NEW(+$12.1M) YoY NEW(+$12.1M)
NLIGHT, INC.(LASRcusip65487K100)	754.0K	QoQ NEW(+754.0K) YoY NEW(+754.0K)	All Managers (Combined)	$5.9M	QoQ NEW(+$5.9M) YoY NEW(+$5.9M)