13FINSIGHT
13F Insight
FilersStocks13FActivistsInsider
Login
13FINSIGHT
13F Insight
FilersStocks13FActivistsInsider
Login
Filers›Asset Manager›ACK Asset Management LLC
DOSSIER · 13F-HR · Q1 2026

ACK Asset Management LLC

ACK Asset's asset manager based in Chicago, IL — $801M in tracked AUM across 20 positions as of Q1 2026.

AA
ACK Asset·Chicago, IL·Asset Manager
CIK 0001510940 · last filed Mar 31, 2026
Total AUM
$801M
▼ 15.7%
vs prior
Holdings
20
—
positions
Whale Score
70
70
strong
Activity
—
no data
changes this Q
Top sector
Tech
6% weight
concentration
AI Analysis · Q1 2026 · Q1 2026

ACK Asset Management LLC filed its latest 13F-HR for Q1 2026. See the latest holdings and position changes below.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
MTRN
MTRN
$69M475K8.6%
02
WMS
WMS
$53M390K6.7%
03
ATS
ATS
$52M1.8M6.5%
04
ROG
ROG
$51M475K6.4%
05
HLIO
HLIO
$50M780K6.3%
06
LFUS
LFUS
$46M135K5.7%
07
CNM
CNM
$44M900K5.5%
08
NOVT
NOVT
$44M375K5.5%
09
SITE
SITE
$44M330K5.5%
10
ASTE
ASTE
$42M787K5.3%

Filing history

Filing history loading…
AI Agent · grounded in ACK
haiku-4-5 · 20 positions indexed
Sector mix
  • Tech6%
  • Financials18%
  • Health Care52%
  • Industrials12%
  • Energy13%
FilersStocks13FActivistsInsiderResearchLearnNewsPricingTermsPrivacyContact

© 2026 13F Insight — Track smart money. Ask the AI Agent.

Listed on Turbo0Featured on Findly ToolsFeatured on toolfame.comFeatured on saasfame.comFeatured on Gets.ToolsZ-ImageFeatured On Micro SaaS ExamplesListed on MarketingDBFeatured on SaasDBFeatured on FazierBusiness Services - OnToplist.comFeatured on SubmitMySaasFeatured on ToolDirsFeatured on ToolfioFeatured on Twelve ToolsListed on uno directoryFeatured on Dang.aiFeatured on ToolPilotFeatured on Startup FameFeatured on PostmakeFeatured on Code.Market