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ACK Asset Management LLC

Q1 2026 · Filed 2026-05-15
Market Value
$683M
-2.1%
Holdings
23
New Purchases
3
Added To
5
Closed
6
Reduced
1
Top 10 Concentration
70.4%
Turnover
39.1%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
LFUS 6.71% 0.00% +6.71% $46M
CTS 4.09% 0.00% +4.09% $28M
SWIM 4.06% 0.00% +4.06% $28M
CDNL 5.08% 2.93% +2.15% $35M
ROG 7.47% 5.74% +1.73% $51M
MTRN 10.06% 8.47% +1.59% $69M
DXPE 5.32% 3.78% +1.54% $36M
HLIO 7.40% 5.99% +1.41% $50M
ASTE 6.20% 4.89% +1.31% $42M
MBC 4.51% 3.64% +0.86% $31M
SITE 6.44% 5.90% +0.54% $44M
CLFD 2.85% 2.62% +0.24% $19M
NOVT 6.49% 6.40% +0.09% $44M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
ENS 0.00% 6.41% -6.41% $0
ATRO 0.00% 4.65% -4.65% $0
AIN 0.00% 4.37% -4.37% $0
APOG 0.00% 4.25% -4.25% $0
GVA 4.39% 8.28% -3.89% $30M
ERII 0.00% 1.31% -1.31% $0
CTOS 0.00% 0.66% -0.66% $0
EXP 4.58% 4.89% -0.31% $31M
WMS 7.84% 8.11% -0.27% $53M
CNM 6.51% 6.71% -0.20% $44M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Large Cap 2 $99M 14.5%
Mid Cap 12 $400M 58.7%
Small Cap 9 $183M 26.8%

Portfolio Analytics

Avg Market Cap
$3.8B
Median Market Cap
$2.4B
Avg P/E
39.3
Median P/E
29.6
Avg Dividend Yield
0.00%
Avg Beta
1.25
# Stocks
23
# ETFs / Funds
0

Top Holdings (23 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 MTRN 10.06% 474,800 $69M $144.65 $10M
2 WMS 7.84% 390,000 $53M $137.13 -$3M
3 ROG 7.47% 475,000 $51M $107.33 $11M +38,293 +8.8%
4 HLIO 7.40% 780,378 $50M $64.71 $9M
5 LFUS 6.71% 135,000 $46M $339.35 +135,000 NEW
6 CNM 6.51% 900,000 $44M $49.40 -$2M
7 NOVT 6.49% 375,000 $44M $118.11 -$330K
8 SITE 6.44% 330,000 $44M $133.11 $3M
9 ASTE 6.20% 786,500 $42M $53.84 $8M
10 DXPE 5.32% 260,000 $36M $139.73 $10M +20,000 +8.3%
11 CDNL 5.08% 874,000 $35M $39.66 $14M +29,409 +3.5%
12 EXP 4.58% 165,000 $31M $189.45 -$3M
13 MBC 4.51% 3,700,000 $31M $8.31 $5M +1,400,000 +60.9%
14 GVA 4.39% 250,000 $30M $119.88 -$28M -250,000 -50.0%
15 CTS 4.09% 584,000 $28M $47.76 +584,000 NEW
16 SWIM 4.06% 5,160,000 $28M $5.37 +5,160,000 NEW
17 CLFD 2.85% 735,200 $19M $26.47 $1M +110,000 +17.6%
18 APOG —% -$30M -813,000 -100.0% SOLD
19 CTOS —% -$5M -800,136 -100.0% SOLD
20 ENS —% -$45M -304,324 -100.0% SOLD
21 ATRO —% -$32M -597,469 -100.0% SOLD
22 ERII —% -$9M -677,251 -100.0% SOLD
23 AIN —% -$30M -600,000 -100.0% SOLD

New Positions

SymbolValue% Port
LFUS $46M 6.71%
CTS $28M 4.09%
SWIM $28M 4.06%

Sold Out Positions

SymbolValue% Port
CTOS —%
ENS —%
AIN —%
ATRO —%
ERII —%
APOG —%
View SEC EDGAR Filings for ACK Asset Management LLC →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms