2026 Q1 Portfolio Activity
In 2026 Q1, Roubaix Capital, LLC maintained a portfolio of 67 distinct positions. The most significant new addition was YORK SPACE SYSTEMS INC, now representing 3.96% of the total fund value. They heavily accumulated shares in MESA LABS INC, increasing the position by 30.7%. Conversely, Roubaix Capital, LLC completely exited their position in JANUS INTERNATIONAL GROUP IN.
Position History
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Total Positions
67
Quarter
2026 Q1
Top Holding
N/A (4.0%)
Top 10 Concentration
33.1%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 67
Roubaix Capital, LLC Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
N/A
YORK SPACE SYST...
|
|
Unknown | 3.96% | — |
#1
Prev: #—
|
7.1 |
—
|
382,906 | — |
NEW
|
382,906 | $8,489,026 | — | 13F Filing | 2026-03-31 | 2026-05-06 | ||
|
SARO
STANDARDAERO IN...
|
Industrials | 3.55% | 3.58% |
#2
Prev: #2
|
3.4 |
—
|
2,043 | 0.7% |
P
S
|
294,397 | $7,604,275 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
PKE
PARK AEROSPACE ...
|
Industrials | 3.51% | 2.73% |
#3
4
Prev: #7
|
2.9 |
—
|
-25,147 | -8.4% |
P
S
|
274,815 | $7,524,435 | 2019 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
SXT
SENSIENT TECHNO...
|
Basic Materials | 3.36% | 2.53% |
#4
10
Prev: #14
|
4.3 |
—
|
20,154 | 32.0% |
P
S
|
83,186 | $7,190,598 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
RRX
REGAL REXNORD C...
|
Industrials | 3.30% | 2.56% |
#5
7
Prev: #12
|
2.3 |
—
|
-5,097 | -11.9% |
P
S
|
37,739 | $7,067,005 | 2023 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
VPG
VISHAY PRECISIO...
|
Technology | 3.26% | — |
#6
Prev: #—
|
4.8 |
—
|
160,961 | — |
NEW
|
160,961 | $6,988,927 | 2023 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
XMTR
XOMETRY INC
|
Industrials | 3.16% | 2.56% |
#7
6
Prev: #13
|
4.3 |
—
|
65,058 | 64.5% |
P
S
|
165,931 | $6,776,622 | 2021 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
RAL
RALLIANT CORP
|
Technology | 3.00% | 3.77% |
#8
7
Prev: #1
|
1.7 |
—
|
-18,961 | -10.9% |
P
S
|
154,619 | $6,430,604 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
RGEN
REPLIGEN CORP
|
Healthcare | 3.00% | — |
#9
Prev: #—
|
4.7 |
—
|
54,555 | — |
NEW
|
54,555 | $6,427,670 | 2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
MLAB
MESA LABS INC
|
Technology | 2.98% | 1.85% |
#10
22
Prev: #32
|
3.7 |
—
|
16,926 | 30.7% |
P
S
|
72,115 | $6,376,408 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
TRNS
TRANSCAT INC
|
Industrials | 2.91% | 2.81% |
#11
6
Prev: #5
|
1.2 |
—
|
-31,129 | -26.8% |
P
S
|
84,982 | $6,241,928 | 2020 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
PDFS
PDF SOLUTIONS I...
|
Technology | 2.78% | 2.68% |
#12
4
Prev: #8
|
1.6 |
—
|
-38,085 | -17.3% |
P
S
|
181,937 | $5,951,159 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
RVTY
REVVITY INC
|
Healthcare | 2.62% | 2.52% |
#13
2
Prev: #15
|
1.5 |
—
|
2,908 | 4.8% |
P
S
|
64,013 | $5,608,179 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
SRAD
SPORTRADAR GROU...
|
Technology | 2.60% | — |
#14
Prev: #—
|
4.5 |
—
|
333,382 | — |
NEW
|
333,382 | $5,580,815 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
TKNO
ALPHA TEKNOVA I...
|
Healthcare | 2.54% | 1.62% |
#15
25
Prev: #40
|
4.0 |
—
|
883,823 | 88.5% |
P
S
|
1,882,355 | $5,440,006 | 2021 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
N/A
FORGENT POWER S...
|
|
Unknown | 2.53% | — |
#16
Prev: #—
|
4.5 |
—
|
184,863 | — |
NEW
|
184,863 | $5,410,940 | — | 13F Filing | 2026-03-31 | 2026-05-06 | ||
|
AGYS
AGILYSYS INC
|
Technology | 2.51% | 3.05% |
#17
14
Prev: #3
|
3.5 |
—
|
15,301 | 25.4% |
P
S
|
75,544 | $5,374,200 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ALGM
ALLEGRO MICROSY...
|
Technology | 2.50% | — |
#18
Prev: #—
|
4.5 |
—
|
169,993 | — |
NEW
|
169,993 | $5,359,879 | 2022 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
STVN
STEVANATO GROUP...
|
Healthcare | 2.47% | 1.68% |
#19
19
Prev: #38
|
4.0 |
—
|
189,343 | 96.6% |
P
S
|
385,316 | $5,298,095 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
LOAR
LOAR HOLDINGS I...
|
Industrials | 2.47% | — |
#20
Prev: #—
|
4.5 |
—
|
92,379 | — |
NEW
|
92,379 | $5,292,393 | 2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ESAB
ESAB CORPORATIO...
|
Industrials | 2.34% | — |
#21
Prev: #—
|
4.4 |
—
|
51,928 | — |
NEW
|
51,928 | $5,019,360 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
CWST
CASELLA WASTE S...
|
Industrials | 2.32% | — |
#22
Prev: #—
|
4.4 |
—
|
62,772 | — |
NEW
|
62,772 | $4,980,330 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
WAY
WAYSTAR HLDG CO...
|
Healthcare | 2.25% | — |
#23
Prev: #—
|
4.4 |
—
|
200,167 | — |
NEW
|
200,167 | $4,826,026 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
NEOG
NEOGEN CORP
|
Healthcare | 2.16% | — |
#24
Prev: #—
|
4.4 |
—
|
498,424 | — |
NEW
|
498,424 | $4,630,359 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
KIDS
ORTHOPEDIATRICS...
|
Healthcare | 2.15% | 1.77% |
#25
12
Prev: #37
|
3.4 |
—
|
55,724 | 23.8% |
P
S
|
290,047 | $4,603,046 | 2019 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
FROG
JFROG LTD
|
Technology | 2.10% | — |
#26
Prev: #—
|
4.3 |
—
|
95,944 | — |
NEW
|
95,944 | $4,502,652 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
CCCS
CCC INTELLIGENT...
|
Unknown | 2.09% | 2.66% |
#27
18
Prev: #9
|
1.3 |
—
|
-41,229 | -5.2% |
P
S
|
744,898 | $4,469,388 | 2022 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
DORM
DORMAN PRODS IN...
|
Consumer Cyclical | 2.09% | — |
#28
Prev: #—
|
4.3 |
—
|
42,811 | — |
NEW
|
42,811 | $4,467,756 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
CLBT
CELLEBRITE DI L...
|
Technology | 1.95% | 1.12% |
#29
16
Prev: #45
|
3.8 |
—
|
157,536 | 108.1% |
P
S
|
303,215 | $4,178,303 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
PCOR
PROCORE TECHNOL...
|
Technology | 1.94% | 1.46% |
#30
13
Prev: #43
|
3.8 |
—
|
25,687 | 54.6% |
P
S
|
72,754 | $4,146,978 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
NPKI
NPK INTERNATION...
|
Energy | 1.83% | 2.92% |
#31
27
Prev: #4
|
0.7 |
—
|
-305,413 | -53.1% |
P
S
|
269,935 | $3,911,358 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
MEC
MAYVILLE ENGR C...
|
Industrials | 1.76% | 1.17% |
#32
12
Prev: #44
|
3.2 |
—
|
64,360 | 44.0% |
P
S
|
210,657 | $3,781,293 | 2019 Q2 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
SI
SHOULDER INNOVA...
|
Unknown | 1.74% | 0.97% |
#33
13
Prev: #46
|
3.7 |
—
|
98,305 | 61.9% |
P
S
|
257,121 | $3,735,968 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
SWIM
LATHAM GROUP IN...
|
Industrials | 1.66% | 1.85% |
#34
3
Prev: #31
|
1.2 |
—
|
-22,991 | -3.4% |
P
S
|
661,037 | $3,549,769 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
AIN
ALBANY INTL COR...
|
Consumer Cyclical | 1.64% | — |
#35
Prev: #—
|
4.2 |
—
|
67,509 | — |
NEW
|
67,509 | $3,524,645 | 2019 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
PUMP
PROPETRO HLDG C...
|
Energy | 1.64% | — |
#36
Prev: #—
|
4.2 |
—
|
243,257 | — |
NEW
|
243,257 | $3,505,333 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
LASR
NLIGHT INC
|
Technology | 1.63% | 2.22% |
#37
18
Prev: #19
|
0.7 |
—
|
-77,659 | -55.9% |
P
S
|
61,389 | $3,500,401 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
TTAN
SERVICETITAN IN...
|
Technology | 1.59% | — |
#38
Prev: #—
|
4.1 |
—
|
53,720 | — |
NEW
|
53,720 | $3,409,071 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
AMBQ
AMBIQ MICRO INC
|
Technology | 1.49% | — |
#39
Prev: #—
|
4.1 |
—
|
125,821 | — |
NEW
|
125,821 | $3,197,112 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
FLYW
FLYWIRE CORPORA...
|
Technology | 1.25% | — |
#40
Prev: #—
|
4.0 |
—
|
230,691 | — |
NEW
|
230,691 | $2,685,243 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ALKT
ALKAMI TECHNOLO...
|
Technology | 1.18% | — |
#41
Prev: #—
|
4.0 |
—
|
161,101 | — |
NEW
|
161,101 | $2,524,453 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
JBTM
JBT MAREL CORPO...
|
Industrials | 1.10% | — |
#42
Prev: #—
|
3.9 |
—
|
18,459 | — |
NEW
|
18,459 | $2,360,352 | 2019 Q3 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
MC
MOELIS & CO
|
Financial Services | 1.09% | — |
#43
Prev: #—
|
3.9 |
—
|
40,967 | — |
NEW
|
40,967 | $2,335,119 | 2019 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
VERX
VERTEX INC
|
Technology | 0.00% | 1.57% |
Sold All 😨
(Was: #42) |
0.0 |
—
|
-184,446 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
AAOI
APPLIED OPTOELE...
|
Technology | 0.00% | 1.61% |
Sold All 😨
(Was: #41) |
0.0 |
—
|
-108,275 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
PAR
PAR TECHNOLOGY ...
|
Technology | 0.00% | 1.65% |
Sold All 😨
(Was: #39) |
0.0 |
—
|
-106,461 | -100.0% |
CLOSED
|
— | $— | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ATR
APTARGROUP INC
|
Healthcare | 0.00% | 1.78% |
Sold All 😨
(Was: #36) |
0.0 |
—
|
-34,317 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ITRI
ITRON INC
|
Technology | 0.00% | 1.79% |
Sold All 😨
(Was: #35) |
0.0 |
—
|
-45,141 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
ATI
ATI INC
|
Industrials | 0.00% | 1.82% |
Sold All 😨
(Was: #34) |
0.0 |
—
|
-37,284 | -100.0% |
CLOSED
|
— | $— | 2019 Q1 | 13F Filing | 2026-03-31 | 2026-05-06 | |||
|
LTH
LIFE TIME GROUP...
|
Consumer Cyclical | 0.00% | 1.84% |
Sold All 😨
(Was: #33) |
0.0 |
—
|
-162,150 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-06 |
Showing 1-50 of 67 holdings