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Roubaix Capital Portfolio holdings

AUM $279M
1-Year Est. Return 54.84%
This Fund
S&P 500
This Quarter Est. Return
-6.51%
1 Year Est. Return
+54.84%
3 Year Est. Return
+173.81%
5 Year Est. Return
+195.03%
10 Year Est. Return
–
AUM
$214M
AUM Growth
-$20.3M
Cap. Flow
-$3.69M
Cap. Flow %
-1.72%
Top 10 Hldgs %
33.08%
Holding
67
New
21
Increased
13
Reduced
9
Closed
24

Top Buys

Rank Stock Value
1
YSS
York Space Systems
YSS
+$9.29M
2
RGEN icon
Repligen
RGEN
+$7.62M
3
VPG icon
Vishay Precision Group
VPG
+$7.27M
4
LOAR icon
Loar Holdings
LOAR
+$6.23M
5
SRAD icon
Sportradar
SRAD
+$6.2M

Top Sells

Rank Stock Value
1
JBI icon
Janus International
JBI
+$6.5M
2
MOD icon
Modine Manufacturing
MOD
+$6.17M
3
AZTA icon
Azenta
AZTA
+$6.11M
4
XPEL icon
XPEL
XPEL
+$5.84M
5
BIRK icon
Birkenstock
BIRK
+$5.34M

Sector Composition

Rank Sector Weight
1 Industrials 36.41%
2 Technology 34.85%
3 Healthcare 18.93%
4 Consumer Discretionary 3.73%
5 Materials 3.36%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FROG icon
26
JFrog
FROG
$10.4B
$4.5M 2.1%
+95,944
New +$4.71M
CCC
27
CCC Intelligent Solutions
CCC
$4.05B
$4.47M 2.09%
744,898
-41,229
-5% -$270K
DORM icon
28
Dorman Products
DORM
$3.95B
$4.47M 2.09%
+42,811
New +$5.1M
CLBT icon
29
Cellebrite
CLBT
$4B
$4.18M 1.95%
303,215
+157,536
+108% +$2.37M
PCOR icon
30
Procore
PCOR
$8.93B
$4.15M 1.94%
72,754
+25,687
+55% +$1.52M
NPKI
31
NPK International
NPKI
$1.18B
$3.91M 1.83%
269,935
-305,413
-53% -$4.24M
MEC icon
32
Mayville Engineering Co
MEC
$574M
$3.78M 1.76%
210,657
+64,360
+44% +$1.24M
SI
33
Shoulder Innovations Inc
SI
$409M
$3.74M 1.74%
257,121
+98,305
+62% +$1.37M
SWIM icon
34
Latham Group
SWIM
$893M
$3.55M 1.66%
661,037
-22,991
-3% -$146K
AIN icon
35
Albany International
AIN
$1.79B
$3.52M 1.64%
+67,509
New +$3.78M
PUMP icon
36
ProPetro Holding
PUMP
$1.43B
$3.51M 1.64%
+243,257
New +$2.91M
LASR icon
37
nLIGHT
LASR
$2.84B
$3.5M 1.63%
61,389
-77,659
-56% -$4.21M
TTAN
38
ServiceTitan Inc
TTAN
$8.43B
$3.41M 1.59%
+53,720
New +$4.15M
AMBQ
39
Ambiq Micro
AMBQ
$1.58B
$3.2M 1.49%
+125,821
New +$3.75M
FLYW icon
40
Flywire
FLYW
$2.13B
$2.69M 1.25%
+230,691
New +$2.9M
ALKT icon
41
Alkami Technology
ALKT
$2.12B
$2.52M 1.18%
+161,101
New +$2.97M
JBTM
42
JBT Marel
JBTM
$6.32B
$2.36M 1.1%
+18,459
New +$2.79M
MC icon
43
Moelis & Co
MC
$4.93B
$2.34M 1.09%
+40,967
New +$2.66M
AAOI icon
44
Applied Optoelectronics
AAOI
$11.4B
– –
-108,275
Closed -$3.77M
AIR icon
45
AAR Corp
AIR
$5.86B
– –
-63,009
Closed -$5.22M
ATI icon
46
ATI
ATI
$31.3B
– –
-37,284
Closed -$4.28M
ATR icon
47
AptarGroup
ATR
$8.57B
– –
-34,317
Closed -$4.19M
AZTA icon
48
Azenta
AZTA
$1.46B
– –
-183,599
Closed -$6.11M
BIRK icon
49
Birkenstock
BIRK
$6.89B
– –
-130,625
Closed -$5.34M
CERT icon
50
Certara
CERT
$1.24B
– –
-563,064
Closed -$4.96M
1
2
3

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Roubaix Capital's Q1 2026 Portfolio in Review

As of Q1 2026, Roubaix Capital held 67 positions worth $214M, down 8.6% from $235M the previous quarter. Its ten largest holdings account for 33% of the portfolio.

Roubaix Capital's Q1 2026 filing shows 21 new, 13 increased, 9 reduced and 24 closed positions. Its largest new stake was York Space Systems: 382,906 shares worth $8.49M. The largest sale was Janus International, an estimated $6.5M.

By sector, the portfolio is most concentrated in Industrials at 36% of assets, up from 31% a quarter earlier, followed by Technology and Healthcare.

  • Roubaix Capital's largest Q1 2026 buy was York Space Systems: 382,906 shares worth $8.49M.
  • Roubaix Capital added most to Xometry in Q1 2026, an estimated $3.46M increase.
  • Roubaix Capital's biggest Q1 2026 reduction was NPK International, cutting an estimated $4.24M.
  • Roubaix Capital fully exited Janus International in Q1 2026, selling an estimated $6.5M.
  • Roubaix Capital's ten largest holdings make up 33% of its $214M portfolio in Q1 2026.
  • Roubaix Capital opened 21 new positions and closed 24 in Q1 2026.
  • Roubaix Capital's portfolio value fell 8.6% quarter-over-quarter to $214M.

Based on Roubaix Capital's 13F filing for Q1 2026, filed 6 May 2026.