Filed: 2/13/2026ACC: 0001510940-26-000001
📋 What this filing means
ACK ASSET MANAGEMENT LLC filed this quarterly 13F‑HR report disclosing 23 equity positions with a total reported market value of $796.76M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
23
Positions
$796.76M
Total AUM (reported)
17.04M
Total Shares
Allocation by class
COM$796.76M100.0%
Portfolio Concentration
Top 3$173.19M21.7%
4–10$313.32M39.3%
11–25$310.25M38.9%
Top 3 weight
21.7%
Top 10 weight
61.1%
Voting Authority Distribution
Total shares with voting rights: 17.04M
Sole
Full voting authority
17.04M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole23
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings23
Rows:
MTRN
SOLEShares474.80K
TypeSH
Market value$59.03M
7.41%
Sole
474.80K
Shared
0.00
None
0.00
GVA
SOLEShares500K
TypeSH
Market value$57.67M
7.24%
Sole
500K
Shared
0.00
None
0.00
WMS
SOLEShares390K
TypeSH
Market value$56.48M
7.09%
Sole
390K
Shared
0.00
None
0.00
ATS
SOLEShares1.85M
TypeSH
Market value$50.84M
6.38%
Sole
1.85M
Shared
0.00
None
0.00
CNM
SOLEShares900K
TypeSH
Market value$46.77M
5.87%
Sole
900K
Shared
0.00
None
0.00
ENS
SOLEShares304.32K
TypeSH
Market value$44.66M
5.61%
Sole
304.32K
Shared
0.00
None
0.00
NOVT
SOLEShares375K
TypeSH
Market value$44.62M
5.60%
Sole
375K
Shared
0.00
None
0.00
JHX
SOLEShares2.10M
TypeSH
Market value$43.58M
5.47%
Sole
2.10M
Shared
0.00
None
0.00
HLIO
SOLEShares780.38K
TypeSH
Market value$41.74M
5.24%
Sole
780.38K
Shared
0.00
None
0.00
SITE
SOLEShares330K
TypeSH
Market value$41.10M
5.16%
Sole
330K
Shared
0.00
None
0.00
ROG
SOLEShares436.71K
TypeSH
Market value$39.99M
5.02%
Sole
436.71K
Shared
0.00
None
0.00
EXP
SOLEShares165K
TypeSH
Market value$34.10M
4.28%
Sole
165K
Shared
0.00
None
0.00
ASTE
SOLEShares786.50K
TypeSH
Market value$34.07M
4.28%
Sole
786.50K
Shared
0.00
None
0.00
ATRO
SOLEShares597.47K
TypeSH
Market value$32.41M
4.07%
Sole
597.47K
Shared
0.00
None
0.00
AIN
SOLEShares600K
TypeSH
Market value$30.42M
3.82%
Sole
600K
Shared
0.00
None
0.00
APOG
SOLEShares813K
TypeSH
Market value$29.60M
3.72%
Sole
813K
Shared
0.00
None
0.00
DXPE
SOLEShares240K
TypeSH
Market value$26.35M
3.31%
Sole
240K
Shared
0.00
None
0.00
MBC
SOLEShares2.30M
TypeSH
Market value$25.39M
3.19%
Sole
2.30M
Shared
0.00
None
0.00
CDNL
SOLEShares844.59K
TypeSH
Market value$20.42M
2.56%
Sole
844.59K
Shared
0.00
None
0.00
CLFD
SOLEShares625.20K
TypeSH
Market value$18.22M
2.29%
Sole
625.20K
Shared
0.00
None
0.00
ERII
SOLEShares677.25K
TypeSH
Market value$9.14M
1.15%
Sole
677.25K
Shared
0.00
None
0.00
AERO-SWX
SOLEShares154.85K
TypeSH
Market value$5.53M
0.69%
Sole
154.85K
Shared
0.00
None
0.00
CTOS
SOLEShares800.14K
TypeSH
Market value$4.61M
0.58%
Sole
800.14K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MTRNSOLE | COM | 474.80K | SH | $59.03M 7.41% | 474.80K | 0.00 | 0.00 |
GVASOLE | COM | 500K | SH | $57.67M 7.24% | 500K | 0.00 | 0.00 |
WMSSOLE | COM | 390K | SH | $56.48M 7.09% | 390K | 0.00 | 0.00 |
ATSSOLE | COM | 1.85M | SH | $50.84M 6.38% | 1.85M | 0.00 | 0.00 |
CNMSOLE | COM | 900K | SH | $46.77M 5.87% | 900K | 0.00 | 0.00 |
ENSSOLE | COM | 304.32K | SH | $44.66M 5.61% | 304.32K | 0.00 | 0.00 |
NOVTSOLE | COM | 375K | SH | $44.62M 5.60% | 375K | 0.00 | 0.00 |
JHXSOLE | COM | 2.10M | SH | $43.58M 5.47% | 2.10M | 0.00 | 0.00 |
HLIOSOLE | COM | 780.38K | SH | $41.74M 5.24% | 780.38K | 0.00 | 0.00 |
SITESOLE | COM | 330K | SH | $41.10M 5.16% | 330K | 0.00 | 0.00 |
ROGSOLE | COM | 436.71K | SH | $39.99M 5.02% | 436.71K | 0.00 | 0.00 |
EXPSOLE | COM | 165K | SH | $34.10M 4.28% | 165K | 0.00 | 0.00 |
ASTESOLE | COM | 786.50K | SH | $34.07M 4.28% | 786.50K | 0.00 | 0.00 |
ATROSOLE | COM | 597.47K | SH | $32.41M 4.07% | 597.47K | 0.00 | 0.00 |
AINSOLE | COM | 600K | SH | $30.42M 3.82% | 600K | 0.00 | 0.00 |
APOGSOLE | COM | 813K | SH | $29.60M 3.72% | 813K | 0.00 | 0.00 |
DXPESOLE | COM | 240K | SH | $26.35M 3.31% | 240K | 0.00 | 0.00 |
MBCSOLE | COM | 2.30M | SH | $25.39M 3.19% | 2.30M | 0.00 | 0.00 |
CDNLSOLE | COM | 844.59K | SH | $20.42M 2.56% | 844.59K | 0.00 | 0.00 |
CLFDSOLE | COM | 625.20K | SH | $18.22M 2.29% | 625.20K | 0.00 | 0.00 |
ERIISOLE | COM | 677.25K | SH | $9.14M 1.15% | 677.25K | 0.00 | 0.00 |
AERO-SWXSOLE | COM | 154.85K | SH | $5.53M 0.69% | 154.85K | 0.00 | 0.00 |
CTOSSOLE | COM | 800.14K | SH | $4.61M 0.58% | 800.14K | 0.00 | 0.00 |