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Roubaix Capital Portfolio holdings

AUM $214M
1-Year Est. Return 32.43%
This Fund
S&P 500
This Quarter Est. Return
+12.29%
1 Year Est. Return
+32.43%
3 Year Est. Return
+104.01%
5 Year Est. Return
+128.11%
10 Year Est. Return
–
AUM
$215M
AUM Growth
+$6.37M
Cap. Flow
-$9.56M
Cap. Flow %
-4.45%
Top 10 Hldgs %
35.91%
Holding
75
New
24
Increased
16
Reduced
7
Closed
28

Top Buys

Rank Stock Value
1
RAL
Ralliant Corp
RAL
+$7.31M
2
JHX icon
James Hardie Industries
JHX
+$6.98M
3
ATS icon
ATS Corp
ATS
+$6.44M
4
MOD icon
Modine Manufacturing
MOD
+$5.64M
5
MLAB icon
Mesa Laboratories
MLAB
+$5.52M

Top Sells

Rank Stock Value
1
GTLS
Chart Industries
GTLS
+$6.94M
2
BELFB
Bel Fuse Inc Class B
BELFB
+$6.31M
3
MGNI icon
Magnite
MGNI
+$6.29M
4
TRS icon
TriMas Corp
TRS
+$6.09M
5
LQDT icon
Liquidity Services
LQDT
+$5.77M

Sector Composition

Rank Sector Weight
1 Industrials 34.95%
2 Technology 30.05%
3 Healthcare 13.33%
4 Materials 6.85%
5 Consumer Discretionary 6.3%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TATT icon
1
TAT Technologies
TATT
$545M
$11M 5.13%
250,141
+15,477
+7% +$549K
PKE icon
2
Park Aerospace
PKE
$765M
$9.25M 4.31%
454,642
+27,856
+7% +$505K
GENI icon
3
Genius Sports
GENI
$1.93B
$8.65M 4.03%
698,569
+38,979
+6% +$466K
NPKI
4
NPK International
NPKI
$1.18B
$8.4M 3.91%
742,697
-60,669
-8% -$591K
LASR icon
5
nLIGHT
LASR
$3.7B
$7.23M 3.37%
244,114
+40,840
+20% +$1.01M
RAL
6
Ralliant Corp
RAL
$7.65B
$7.19M 3.35%
+164,471
New +$7.31M
SARO
7
StandardAero Inc
SARO
$9.69B
$6.51M 3.03%
238,559
+31,647
+15% +$888K
CERT icon
8
Certara
CERT
$1.2B
$6.35M 2.96%
519,776
+236,568
+84% +$2.59M
MOD icon
9
Modine Manufacturing
MOD
$12B
$6.3M 2.94%
+44,342
New +$5.64M
SXT icon
10
Sensient Technologies
SXT
$5.4B
$6.21M 2.89%
66,139
+520
+0.8% +$56.9K
AGYS icon
11
Agilysys
AGYS
$2.93B
$5.99M 2.79%
56,949
+241
+0.4% +$26.7K
ORA icon
12
Ormat Technologies
ORA
$6.19B
$5.97M 2.78%
62,055
+7,700
+14% +$695K
ATS icon
13
ATS Corp
ATS
$2.5B
$5.86M 2.73%
+223,532
New +$6.44M
JHX icon
14
James Hardie Industries
JHX
$15.4B
$5.6M 2.61%
+291,314
New +$6.98M
PDFS icon
15
PDF Solutions
PDFS
$1.94B
$5.33M 2.48%
+206,348
New +$4.51M
RRX icon
16
Regal Rexnord
RRX
$13.7B
$5.24M 2.44%
36,523
+15,070
+70% +$2.22M
TKNO icon
17
Alpha Teknova
TKNO
$259M
$5.16M 2.4%
833,819
+393,881
+90% +$1.85M
MLAB icon
18
Mesa Laboratories
MLAB
$533M
$5.14M 2.39%
+76,657
New +$5.52M
SKY icon
19
Champion Homes
SKY
$4.49B
$4.78M 2.23%
+62,643
New +$4.42M
JBI icon
20
Janus International
JBI
$720M
$4.71M 2.19%
476,973
+52,169
+12% +$503K
WAY
21
Waystar Holding Corp
WAY
$4.46B
$4.48M 2.09%
+118,092
New +$4.38M
AEIS icon
22
Advanced Energy
AEIS
$11.4B
$4.4M 2.05%
25,857
-3,322
-11% -$500K
MKSI icon
23
MKS Inc
MKSI
$20.4B
$4.16M 1.94%
33,588
-19,938
-37% -$2.13M
APPN icon
24
Appian
APPN
$1.88B
$4.08M 1.9%
+133,512
New +$4.01M
OLED icon
25
Universal Display
OLED
$3.75B
$3.87M 1.8%
26,963
-957
-3% -$139K
1
2 3

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GC
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TSS
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CMBA
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VCM
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MCA
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IH
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IAM
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Roubaix Capital's Q3 2025 Portfolio in Review

As of Q3 2025, Roubaix Capital held 75 positions worth $215M, up 3.1% from $208M the previous quarter. Its ten largest holdings account for 36% of the portfolio.

Roubaix Capital withdrew a net $9.56M in Q3 2025, closing 28 positions and reducing 7 holdings. Its most notable exit was Chart Industries, an estimated $6.94M position sold in full.

By sector, the portfolio is most concentrated in Industrials at 35% of assets, down from 39% a quarter earlier, followed by Technology and Healthcare.

Against the trend, Roubaix Capital opened a new position in Ralliant Corp worth $7.19M.

  • Roubaix Capital's largest Q3 2025 buy was Ralliant Corp: 164,471 shares worth $7.19M.
  • Roubaix Capital added most to Certara in Q3 2025, an estimated $2.59M increase.
  • Roubaix Capital's biggest Q3 2025 reduction was RadNet, cutting an estimated $2.31M.
  • Roubaix Capital fully exited Chart Industries in Q3 2025, selling an estimated $6.94M.
  • Roubaix Capital's ten largest holdings make up 36% of its $215M portfolio in Q3 2025.
  • Roubaix Capital opened 24 new positions and closed 28 in Q3 2025.
  • Roubaix Capital's portfolio value rose 3.1% quarter-over-quarter to $215M.

Based on Roubaix Capital's 13F filing for Q3 2025, filed 12 Nov 2025.