ACK Asset Management LLC
•CIK: 1510940•Filing: Q4 2025
**ACK Asset Management LLC** manages $797M across a concentrated portfolio of 23 positions. The fund exhibits significant conviction in its top holdings, led by MTRN at $59.0M and GVA at $57.7M. Further substantial allocations include WMS ($56.5M), ATS ($50.8M), and CNM ($46.8M). This structure suggests a focused, high-conviction approach across its current investment universe.
Total AUM
$796.8M
QoQ Performance
-0.3%
Positions
23
Top 10 Concentration
61.1%
Latest Filing
Q4 2025
Top Holdings Allocation
MTRN
GVA
WMS
ATS
CNM
ENS
1GSN
JHX
MTRN7.4%
GVA7.2%
WMS7.1%
ATS6.4%
CNM5.9%
ENS5.6%
1GSN5.6%
JHX5.5%
📈 Biggest Buys
📉 Biggest Sells
Sector Breakdown
Other100.0%
Changes from Q3 2025
NEW6 new positions
↑5 increased
↓6 decreased
Historical Filings
Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023