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ACK Asset Management Portfolio holdings
AUM
$856M
Turnover
48.15%
1-Year Est. Return
70.44%
This Fund
S&P 500
This Quarter Est. Return
+33.24%
1 Year Est. Return
+70.44%
3 Year Est. Return
+131.86%
5 Year Est. Return
+196.03%
10 Year Est. Return
+1,316.98%
AUM
$856M
AUM Growth
+$55.2M
(+6.9%)
Cap. Flow
-$91.9M
Cap. Flow % of AUM
Cap. Flow %
-10.74%
Top 10 Holdings %
Top 10 Hldgs %
60.24%
Holding
27
New
7
Increased
5
Reduced
5
Closed
6
Avg Time Held
0.9
years
Top 10 Avg Time Held
1.1
years
Top 20 Avg Time Held
1
year
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Garrett Motion
GTX
|
+$41.7M |
| 2 |
DNOW Inc
DNOW
|
+$38.9M |
| 3 |
BorgWarner
BWA
|
+$38M |
| 4 |
Sensata Technologies
ST
|
+$27.1M |
| 5 |
EquipmentShare.com Inc
EQPT
|
+$22.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Materion
MTRN
|
+$71.2M |
| 2 |
Rogers Corp
ROG
|
+$51M |
| 3 |
Novanta
NOVT
|
+$44.3M |
| 4 |
DXP Enterprises
DXPE
|
+$36.3M |
| 5 |
Cardinal Infrastructure Group
CDNL
|
+$34.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 46.04% |
| 2 | Technology | 18.31% |
| 3 | Materials | 16.89% |
| 4 | Consumer Discretionary | 15.44% |
| 5 | Miscellaneous | 3.32% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1
Advanced Drainage Systems
WMS
$9.7B
| $61.2M | 7.15% |
390,000
| – | – |
2025 Q2
4 quarters
|
|
2
Helios Technologies
HLIO
$2.24B
| $60.8M | 7.1% |
681,000
-99,378
| -13% | -$7.63M |
2025 Q3
3 quarters
|
|
3
Littelfuse
LFUS
$9.8B
| $56.9M | 6.65% |
125,000
-10,000
| -7% | -$4.33M |
2026 Q1
1 quarter
|
|
4
James Hardie Industries
JHX
$14.9B
| $55M | 6.42% |
2,100,000
| – | – |
2025 Q3
3 quarters
|
|
|
5
Garrett Motion
GTX
$4.55B
| $54.3M | 6.35% |
+1,500,000
| New | +$41.7M |
2026 Q2
0 quarters
|
|
6
Core & Main
CNM
$7.7B
| $52.6M | 6.14% |
1,090,000
+190,000
| +21% | +$9.39M |
2025 Q3
3 quarters
|
|
7
Eagle Materials
EXP
$5.24B
| $49.5M | 5.78% |
220,000
+55,000
| +33% | +$11.5M |
2025 Q3
3 quarters
|
|
8
ATS Corp
ATS
$1.77B
| $43.2M | 5.04% |
1,500,000
-346,196
| -19% | -$10.7M |
2023 Q2
12 quarters
|
|
9
Astec Industries
ASTE
$906M
| $42.2M | 4.93% |
690,276
-96,224
| -12% | -$5.31M |
2025 Q3
3 quarters
|
|
|
10
Materion
MTRN
$5.13B
| $40.1M | 4.69% |
135,000
-339,800
| -72% | -$71.2M |
2020 Q1
25 quarters
|
|
|
11
BorgWarner
BWA
$11.9B
| $39.8M | 4.65% |
+600,000
| New | +$38M |
2026 Q2
0 quarters
|
|
|
12
DNOW Inc
DNOW
$2.85B
| $38.9M | 4.54% |
+3,000,000
| New | +$38.9M |
2026 Q2
0 quarters
|
|
13
MasterBrand
MBC
$1.36B
| $38.1M | 4.45% |
3,700,000
| – | – |
2025 Q3
3 quarters
|
|
14
SiteOne Landscape Supply
SITE
$4.1B
| $37.8M | 4.41% |
330,000
| – | – |
2025 Q1
5 quarters
|
|
15
Latham Group
SWIM
$720M
| $36.6M | 4.28% |
5,660,000
+500,000
| +10% | +$2.81M |
2026 Q1
1 quarter
|
|
16
Clearfield
CLFD
$405M
| $32.2M | 3.76% |
810,200
+75,000
| +10% | +$2.75M |
2023 Q4
10 quarters
|
|
|
17
Sensata Technologies
ST
$5.95B
| $28.6M | 3.35% |
+600,000
| New | +$27.1M |
2026 Q2
0 quarters
|
|
18
Shoals Technologies Group
SHLS
$1.2B
| $22.3M | 2.61% |
+2,255,000
| New | +$20.5M |
2026 Q2
0 quarters
|
|
|
19
EquipmentShare.com Inc
EQPT
$3.63B
| $20.9M | 2.44% |
+1,064,830
| New | +$22.8M |
2026 Q2
0 quarters
|
|
20
Methode Electronics
MEI
$483M
| $16.6M | 1.94% |
+877,500
| New | +$9.07M |
2026 Q2
0 quarters
|
|
21
CTS Corp
CTS
$1.6B
| – | – |
-584,000
| Closed | -$27.9M | – |
|
|
22
DXP Enterprises
DXPE
$2.81B
| – | – |
-260,000
| Closed | -$36.3M | – |
|
23
Granite Construction
GVA
$4.89B
| – | – |
-250,000
| Closed | -$30M | – |
|
|
24
Novanta
NOVT
$4.95B
| – | – |
-375,000
| Closed | -$44.3M | – |
|
|
25
Rogers Corp
ROG
$2.43B
| – | – |
-475,000
| Closed | -$51M | – |
|
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ACK Asset Management's Q2 2026 Portfolio in Review
As of Q2 2026, ACK Asset Management held 27 positions worth $856M, up 6.9% from $801M the previous quarter. Its ten largest holdings account for 60% of the portfolio.
ACK Asset Management withdrew a net $91.9M in Q2 2026, closing 6 positions and reducing 5 holdings. Its most notable exit was Rogers Corp, an estimated $51M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 46% of assets, down from 52% a quarter earlier, followed by Technology and Materials.
Against the trend, ACK Asset Management opened a new position in Garrett Motion worth $54.3M.
- ACK Asset Management's largest Q2 2026 buy was Garrett Motion: 1,500,000 shares worth $54.3M.
- ACK Asset Management added most to Eagle Materials in Q2 2026, an estimated $11.5M increase.
- ACK Asset Management's biggest Q2 2026 reduction was Materion, cutting an estimated $71.2M.
- ACK Asset Management fully exited Rogers Corp in Q2 2026, selling an estimated $51M.
- ACK Asset Management's ten largest holdings make up 60% of its $856M portfolio in Q2 2026.
- ACK Asset Management opened 7 new positions and closed 6 in Q2 2026.
- ACK Asset Management's portfolio value rose 6.9% quarter-over-quarter to $856M.
Based on ACK Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.