Roubaix Capital, LLC
Long book
$214.3M
Q1 2026
Positions
43
Top-10 weight
33%
concentration
Last quarter
+41.9%
SPY +14.8%
Turnover
67%
of book per quarter
Strategy in plain words
auto-generated from filingsRoubaix Capital, LLC is an institutional manager, running a $214.3M US long book across 43 positions.
The portfolio is moderately concentrated (top 10 ≈ 33% of the book). Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: YORK SPACE SYSTEMS INC, STANDARDAERO INC, PARK AEROSPACE CORP, SENSIENT TECHNOLOGIES CORP, REGAL REXNORD CORP.
Over the last 9 quarters its long book ran on average 3.8pp per quarter ahead of the S&P 500, beating the index in 7 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+2.9%
Q2 2024
+8.2%
Q3 2024
+5.2%
Q4 2024
-14.2%
Q1 2025
+11.0%
Q2 2025
+16.1%
Q3 2025
+5.3%
Q4 2025
-1.9%
Q1 2026
+41.9%
Sector allocation
Technology 39%
Industrials 27%
Healthcare 12%
Other 7%
Services media 6%
Materials 5%
Utilities 2%
Energy 2%
Long book by quarter
What does Roubaix Capital, own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| YSS YORK SPACE SYSTEMS INC | Industrials | 382.9K | $8.5M | 4.0% | New |
| SARO STANDARDAERO INC | Industrials | 294.4K | $7.6M | 3.5% | +0.7% |
| PKE PARK AEROSPACE CORP | Industrials | 274.8K | $7.5M | 3.5% | -8.4% |
| SXT SENSIENT TECHNOLOGIES CORP | Other | 83.2K | $7.2M | 3.4% | +32.0% |
| RRX REGAL REXNORD CORP | Industrials | 37.7K | $7.1M | 3.3% | -11.9% |
| VPG VISHAY PRECISION GROUP | Technology | 161.0K | $7.0M | 3.3% | New |
| XMTR XOMETRY INC-A | Services media | 165.9K | $6.8M | 3.2% | +64.5% |
| RAL RALLIANT CORP | Technology | 154.6K | $6.4M | 3.0% | -10.9% |
| RGEN REPLIGEN CORP | Healthcare | 54.6K | $6.4M | 3.0% | New |
| MLAB MESA LABORATORIES INC | Technology | 72.1K | $6.4M | 3.0% | +30.7% |
| TRNS TRANSCAT INC | Technology | 85.0K | $6.2M | 2.9% | -26.8% |
| PDFS PDF SOLUTIONS INC | Technology | 181.9K | $6.0M | 2.8% | -17.3% |
| RVTY REVVITY INC | Healthcare | 64.0K | $5.6M | 2.6% | +4.8% |
| SRAD SPORTRADAR GROUP AG-A | Technology | 333.4K | $5.6M | 2.6% | New |
| TKNO ALPHA TEKNOVA INC | Materials | 1.9M | $5.4M | 2.5% | +88.5% |
| FPS FORGENT POWER SOLUTIONS-CL A | Industrials | 184.9K | $5.4M | 2.5% | New |
| AGYS AGILYSYS INC | Technology | 75.5K | $5.4M | 2.5% | +25.4% |
| ALGM ALLEGRO MICROSYSTEMS INC | Technology | 170.0K | $5.4M | 2.5% | New |
| STVN STEVANATO GROUP SPA | Healthcare | 385.3K | $5.3M | 2.5% | +96.6% |
| LOAR LOAR HOLDINGS INC | Industrials | 92.4K | $5.3M | 2.5% | New |
| ESAB ESAB CORP | Industrials | 51.9K | $5.0M | 2.3% | New |
| CWST CASELLA WASTE SYSTEMS INC-A | Utilities | 62.8K | $5.0M | 2.3% | New |
| WAY WAYSTAR HOLDING CORP | Technology | 200.2K | $4.8M | 2.3% | New |
| NEOG NEOGEN CORP | Materials | 498.4K | $4.6M | 2.2% | New |
| KIDS ORTHOPEDIATRICS CORP | Healthcare | 290.0K | $4.6M | 2.1% | +23.8% |
| FROG JFROG LTD | Technology | 95.9K | $4.5M | 2.1% | New |
| CCC CCC INTELLIGENT SOLUTIONS HO | Technology | 744.9K | $4.5M | 2.1% | -5.2% |
| DORM DORMAN PRODUCTS INC | Industrials | 42.8K | $4.5M | 2.1% | New |
| CLBT CELLEBRITE DI LTD | Technology | 303.2K | $4.2M | 1.9% | +108.1% |
| PCOR PROCORE TECHNOLOGIES INC | Technology | 72.8K | $4.1M | 1.9% | +54.6% |
| NPKI NPK INTERNATIONAL INC | Services media | 269.9K | $3.9M | 1.8% | -53.1% |
| MEC MAYVILLE ENGINEERING CO INC | Industrials | 210.7K | $3.8M | 1.8% | +44.0% |
| SI SHOULDER INNOVATIONS INC | Healthcare | 257.1K | $3.7M | 1.7% | +61.9% |
| SWIM LATHAM GROUP INC | Other | 661.0K | $3.5M | 1.7% | -3.4% |
| AIN ALBANY INTL CORP-CL A | Other | 67.5K | $3.5M | 1.6% | New |
| PUMP PROPETRO HOLDING CORP | Energy | 243.3K | $3.5M | 1.6% | New |
| LASR NLIGHT INC | Technology | 61.4K | $3.5M | 1.6% | -55.9% |
| TTAN SERVICETITAN INC-A | Technology | 53.7K | $3.4M | 1.6% | New |
| AMBQ AMBIQ MICRO INC | Technology | 125.8K | $3.2M | 1.5% | New |
| FLYW FLYWIRE CORP-VOTING | Services media | 230.7K | $2.7M | 1.3% | New |
| ALKT ALKAMI TECHNOLOGY INC | Technology | 161.1K | $2.5M | 1.2% | New |
| JBTM JBT MAREL CORP | Industrials | 18.5K | $2.4M | 1.1% | New |
| MC MOELIS & CO - CLASS A | Financials | 41.0K | $2.3M | 1.1% | New |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 6, 2026 | 43 | $214.3M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 9, 2026 | 46 | $234.5M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 12, 2025 | 47 | $214.7M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 13, 2025 | 51 | $208.4M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 13, 2025 | 50 | $191.9M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 13, 2025 | 47 | $208.6M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 25, 2024 | 47 | $181.5M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 2, 2024 | 45 | $158.3M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR/ARESTATEMENT | Aug 1, 2024 | 47 | $158.1M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 13, 2024 | 47 | $158.1M | SEC ↗ |
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