PC
Portolan Capital Management, LLC Quarterly 13F Portfolio Update (Q2 2026)
Portolan Capital Management, LLCCIK: 0001350290
Diversified strategyMomentum followerHigh-turnover trader
Total reported value
$2.7B
Reporting period: 2026-06-30 · Number of holdings: 148
Portolan Capital Management, LLC disclosed 148 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $2.7B and a quarterly turnover rate of 84.7%.
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Personality snowflake
- Concentration
- 6.46
- Portfolio Stability
- 84.68
- Momentum
- 100
- Sector conviction
- 68.87
- Diversification
- 100
- Sizing Uniformity
- 88.16
Portolan Capital Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.016 — mathematically equivalent to about 62 equally-sized positions, well below its 148 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.18), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 52% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd VPG
-1.1% $106.9M
Sold out PBF
Add VIRT
+76.8% $74.3M
Sold out CRGY
Trim BIDU
-73.8% -$29.9M
Add QLYS
+121.7% $51.8M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VPG | Vishay Precision Group | Stock-Other | 5.66% | +3.30% | -1.15% | |
| 2 | VIRT | Virtu Financial Inc-class A | Stock-Financials | 4.78% | +1.94% | +76.77% | |
| 3 | TTMI | Ttm Technologies | Stock-Tech | 3.56% | -0.21% | -30.19% | |
| 4 | MOD | Modine Manufacturing Co | Stock-Consumer Disc | 3.14% | -1.61% | -23.88% | |
| 5 | QLYS | Qualys Inc | Stock-Tech | 2.73% | +1.61% | +121.65% | |
| 6 | FOUR | Shift4 Payments Inc-class A | Stock-Tech | 2.03% | +1.53% | +419.93% | |
| 7 | MEC | Mayville Engineering Co Inc | Stock-Other | 1.82% | +1.04% | +58.23% | |
| 8 | ENVA | Enova International Inc | Stock-Financials | 1.79% | +1.21% | +145.66% | |
| 9 | SMTC | Semtech CORP | Stock-Tech | 1.79% | +0.43% | -11.35% | |
| 10 | CLS | Celestica Inc | Stock-Tech | 1.73% | -1.24% | -35.89% | |
| 11 | UTHR | United Therapeutics CORP | Stock-Healthcare | 1.65% | -0.35% | +28.51% | |
| 12 | GENI | Genius Sports Limited | Stock-Other | 1.59% | +0.93% | +151.73% | |
| 13 | POWL | Powell Industries Inc | Stock-Industrials | 1.56% | -0.62% | +92.05% | |
| 14 | PENG | Penguin Solutions Inc | Stock-Other | 1.55% | +1.55% | NEW | |
| 15 | DAVE | Dave Inc | Stock-Other | 1.47% | +0.49% | -0.10% | |
| 16 | FLEX | Flex Ltd. | Stock-Tech | 1.39% | -0.15% | -48.32% | |
| 17 | ALNT | Allient Inc | Stock-Other | 1.39% | +0.37% | +11.20% | |
| 18 | PRCH | Porch Group Inc | Stock-Other | 1.38% | +0.56% | +14.53% | |
| 19 | AKAM | Akamai Technologies Inc | Stock-Tech | 1.37% | -1.22% | -26.71% | |
| 20 | CADL | Candel Therapeutics Inc | Stock-Other | 1.35% | +0.60% | +20.59% | |
| 21 | TLN | Talen Energy CORP | Stock-Utilities | 1.30% | -0.09% | +10.71% | |
| 22 | RRX | Regal Rexnord CORP | Stock-Industrials | 1.23% | +0.69% | +154.74% | |
| 23 | LNTH | Lantheus Holdings Inc | Stock-Healthcare | 1.20% | -0.48% | -30.83% | |
| 24 | BIIB | Biogen Inc | Stock-Healthcare | 1.16% | — | +20.57% | |
| 25 | VECO | Veeco Instruments Inc | Stock-Other | 1.14% | +0.68% | +58.51% | |
| 26 | LUXE | Luxexperience BV | Stock-Other | 1.13% | -0.46% | +8.55% | |
| 27 | ZETA | Zeta Global Holdings Corp-a | Stock-Tech | 1.11% | +0.70% | +209.03% | |
| 28 | CLBT | Cellebrite DI Ltd. | Stock-Other | 1.06% | -0.54% | -11.39% | |
| 29 | SRAD | Sportradar Group AG | Stock-Other | 1.02% | +1.02% | NEW | |
| 30 | GOOS | Canada Goose Holdings Inc | Stock-Other | 0.98% | -0.90% | -14.53% | |
| 31 | BAND | Bandwidth Inc-class A | Stock-Other | 0.98% | +0.98% | NEW | |
| 32 | WRBY | Warby Parker Inc-class A | Stock-Other | 0.96% | +0.40% | +68.53% | |
| 33 | KTB | Kontoor Brands Inc | Stock-Consumer Disc | 0.91% | +0.91% | NEW | |
| 34 | OSK | Oshkosh CORP | Stock-Industrials | 0.91% | +0.77% | +766.87% | |
| 35 | ECPG | Encore Capital Group Inc | Stock-Other | 0.89% | +0.89% | NEW | |
| 36 | TWLO | Twilio Inc - A | Stock-Tech | 0.89% | +0.39% | +54.34% | |
| 37 | SEZL | Sezzle Inc | Stock-Other | 0.87% | +0.63% | +93.79% | |
| 38 | RELY | Remitly Global Inc | Stock-Other | 0.85% | +0.27% | +45.75% | |
| 39 | ACMR | Acm Research Inc-class A | Stock-Other | 0.84% | +0.67% | +113.12% | |
| 40 | ESI | Element Solutions Inc | Stock-Materials | 0.84% | +0.44% | +112.09% | |
| 41 | NOK | Nokia Corp-spon Adr | Stock-Tech | 0.82% | -0.20% | -31.25% | |
| 42 | BB | Blackberry LTD | Stock-Other | 0.81% | +0.81% | NEW | |
| 43 | IFF | Intl Flavors & Fragrances | Stock-Materials | 0.80% | +0.80% | NEW | |
| 44 | PLSE | Pulse Biosciences Inc | Stock-Other | 0.78% | -0.06% | +2.72% | |
| 45 | MOG-A | Moog Inc-class A | Stock-Other | 0.78% | +0.32% | +67.39% | |
| 46 | REAX | Real Brokerage Inc/the | Stock-Other | 0.75% | -1.18% | -23.95% | |
| 47 | CDNA | Caredx Inc | Stock-Other | 0.73% | +0.42% | +101.20% | |
| 48 | PARR | Par Pacific Holdings Inc | Stock-Energy | 0.72% | -1.59% | -50.73% | |
| 49 | VSH | Vishay Intertechnology Inc | Stock-Other | 0.71% | +0.71% | NEW | |
| 50 | TTWO | Take-two Interactive Softwre | Stock-Comm Services | 0.68% | +0.34% | +124.98% |
1–50 of 148
Portfolio Performance
Performance for Q3 2026
-2.8%
Performance Last 4 Quarters
+28.5%
- Stdev
- +24.4%
- Beta
- +1.61
- Alpha
- -12.7%
- Max Drawdown
- -20.3%
- Annualized Perf
- +17.9%
- Batting Avg vs S&P
- +63.9%
- Sortino
- +1.28
- Stutzer
- +0.23
- Treynor
- +0.12
- Sterling
- +0.76
- Calmar
- +0.88
- Information Ratio
- -0.04
- Tracking Error
- +15%
- Stdev Down
- +15.2%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +58.9%
- Worst 12 Months
- -9.2%
- Efficiency Ratio
- +0.29
- Sharpe
- +0.8
- Stdev Sectors
- +11.4%
- Skewness
- -0.31
- Kurtosis
- -0.79
- Upside Potential
- +3.05
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 148 | $2.7B | 85 | ||
| 2026 Q1 | 144 | $1.9B | 74 | ||
| 2025 Q4 | 155 | $1.9B | 73 | ||
| 2025 Q3 | 119 | $1.8B | 100 | ||
| 2025 Q2 | 118 | $1.6B | 0 | ||
| 2025 Q1 | 109 | $1.3B | 100 | ||
| 2024 Q4 | 131 | $1.5B | 0 | ||
| 2024 Q3 | 129 | $1.4B | 0 | ||
| 2024 Q2 | 117 | $1.2B | 0 | ||
| 2024 Q1 | 116 | $1.3B | 0 | ||
| 2023 Q4 | 127 | $1.1B | 0 | ||
| 2023 Q3 | 123 | $1.1B | 0 | ||
| 2023 Q2 | 120 | $1.1B | 0 | ||
| 2023 Q1 | 139 | $1.0B | 0 | ||
| 2022 Q4 | 131 | $1.0B | 0 | ||
| 2022 Q3 | 128 | $946.2M | 0 | ||
| 2022 Q2 | 123 | $993.2M | 0 | ||
| 2022 Q1 | 136 | $1.3B | 0 | ||
| 2021 Q4 | 131 | $1.5B | 0 | ||
| 2021 Q3 | 134 | $1.4B | 0 | ||
| 2021 Q2 | 131 | $1.4B | 65 | ||
| 2021 Q1 | 151 | $1.3B | 62 | ||
| 2020 Q4 | 164 | $1.1B | 85 | ||
| 2020 Q3 | 139 | $883.8M | 75 | ||
| 2020 Q2 | 128 | $875.6M | 87 | ||
| 2020 Q1 | 112 | $666.6M | 100 | ||
| 2019 Q4 | 95 | $989.9M | 47 | ||
| 2019 Q3 | 87 | $887.1M | 52 | ||
| 2019 Q2 | 88 | $929.7M | 49 | ||
| 2019 Q1 | 87 | $972.0M | 77 | ||
| 2018 Q4 | 82 | $806.8M | 62 | ||
| 2018 Q3 | 96 | $1.0B | 39 | ||
| 2018 Q2 | 99 | $979.4M | 48 | ||
| 2018 Q1 | 100 | $912.9M | 47 | ||
| 2017 Q4 | 116 | $913.1M | 48 | ||
| 2017 Q3 | 111 | $838.8M | 61 | ||
| 2017 Q2 | 117 | $779.2M | 70 | ||
| 2017 Q1 | 120 | $769.7M | 68 | ||
| 2016 Q4 | 125 | $742.7M | 80 | ||
| 2016 Q3 | 109 | $728.7M | 59 | ||
| 2016 Q2 | 109 | $694.4M | 61 | ||
| 2016 Q1 | 111 | $746.8M | 78 | ||
| 2015 Q4 | 123 | $789.0M | 73 | ||
| 2015 Q3 | 114 | $754.7M | 67 | ||
| 2015 Q2 | 119 | $715.0M | 65 | ||
| 2015 Q1 | 113 | $545.1M | 75 | ||
| 2014 Q4 | 106 | $499.2M | 100 | ||
| 2014 Q3 | 104 | $440.3M | 68 | ||
| 2014 Q2 | 119 | $457.8M | 63 | ||
| 2014 Q1 | 139 | $434.4M | 68 | ||
| 2013 Q4 | 119 | $451.0M | 70 | ||
| 2013 Q3 | 133 | $381.8M | 70 | ||
| 2013 Q2 | 158 | $351.0M | 0 |
Holding changes this quarter
Portolan Capital Management, LLC's most significant position changes for 2026-06-30: New buy: Penguin Solutions Inc (PENG); Sold out: Pbf Energy Inc-class A (PBF); Sold out: Crescent Energy Inc-a (CRGY); New buy: Sportradar Group AG (SRAD); New buy: Bandwidth Inc-class A (BAND).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | VPG | Vishay Precision Group | +3.3% | -1.15% | Trim |
| 2 | VIRT | Virtu Financial Inc-class A | +1.9% | +76.77% | Add |
| 3 | QLYS | Qualys Inc | +1.6% | +121.65% | Add |
| 4 | PENG | Penguin Solutions Inc | +1.6% | NEW | New buy |
| 5 | FOUR | Shift4 Payments Inc-class A | +1.5% | +419.93% | Add |
| 6 | ENVA | Enova International Inc | +1.2% | +145.66% | Add |
| 7 | MEC | Mayville Engineering Co Inc | +1% | +58.23% | Add |
| 8 | SRAD | Sportradar Group AG | +1% | NEW | New buy |
| 9 | BAND | Bandwidth Inc-class A | +1% | NEW | New buy |
| 10 | GENI | Genius Sports Limited | +0.9% | +151.73% | Add |
| 11 | KTB | Kontoor Brands Inc | +0.9% | NEW | New buy |
| 12 | ECPG | Encore Capital Group Inc | +0.9% | NEW | New buy |
| 13 | BB | Blackberry LTD | +0.8% | NEW | New buy |
| 14 | IFF | Intl Flavors & Fragrances | +0.8% | NEW | New buy |
| 15 | OSK | Oshkosh CORP | +0.8% | +766.87% | Add |
| 16 | VSH | Vishay Intertechnology Inc | +0.7% | NEW | New buy |
| 17 | ZETA | Zeta Global Holdings Corp-a | +0.7% | +209.03% | Add |
| 18 | RRX | Regal Rexnord CORP | +0.7% | +154.74% | Add |
| 19 | VECO | Veeco Instruments Inc | +0.7% | +58.51% | Add |
| 20 | ACMR | Acm Research Inc-class A | +0.7% | +113.12% | Add |
| 21 | GTES | Gates Industrial Corporation plc | +0.7% | NEW | New buy |
| 22 | SEZL | Sezzle Inc | +0.6% | +93.79% | Add |
| 23 | CADL | Candel Therapeutics Inc | +0.6% | +20.59% | Add |
| 24 | COHU | Cohu Inc | +0.6% | NEW | New buy |
| 25 | PRCH | Porch Group Inc | +0.6% | +14.53% | Add |
| 26 | TENB | Tenable Holdings Inc | +0.5% | NEW | New buy |
| 27 | GEHC | GE Healthcare Technology | +0.5% | NEW | New buy |
| 28 | CXT | Crane Nxt Co | +0.5% | NEW | New buy |
| 29 | DAVE | Dave Inc | +0.5% | -0.10% | Trim |
| 30 | HZO | Marinemax Inc | +0.5% | NEW | New buy |
| 31 | SANM | Sanmina CORP | +0.5% | +149.73% | Add |
| 32 | ESI | Element Solutions Inc | +0.4% | +112.09% | Add |
| 33 | SMTC | Semtech CORP | +0.4% | -11.35% | Trim |
| 34 | CDNA | Caredx Inc | +0.4% | +101.20% | Add |
| 35 | QMCO | Quantum CORP | +0.4% | NEW | New buy |
| 36 | RACE | Ferrari N.V. | +0.4% | NEW | New buy |
| 37 | WRBY | Warby Parker Inc-class A | +0.4% | +68.53% | Add |
| 38 | TWLO | Twilio Inc - A | +0.4% | +54.34% | Add |
| 39 | BOOT | Boot Barn Holdings Inc | +0.4% | NEW | New buy |
| 40 | ALNT | Allient Inc | +0.4% | +11.20% | Add |
| 41 | HALO | Halozyme Therapeutics Inc | +0.4% | NEW | New buy |
| 42 | TTWO | Take-two Interactive Softwre | +0.3% | +124.98% | Add |
| 43 | SG | Sweetgreen Inc - Class A | +0.3% | NEW | New buy |
| 44 | MOG-A | Moog Inc-class A | +0.3% | +67.39% | Add |
| 45 | ATEN | A10 Networks Inc | +0.3% | NEW | New buy |
| 46 | VICR | Vicor CORP | +0.3% | +42.79% | Add |
| 47 | TGLS | Tecnoglass Inc. | +0.3% | NEW | New buy |
| 48 | SILC | Silicom Ltd. | +0.3% | NEW | New buy |
| 49 | ONTO | Onto Innovation Inc | +0.3% | +63.96% | Add |
| 50 | RELY | Remitly Global Inc | +0.3% | +45.75% | Add |
1–50 of 180
Filing History
FAQ
What is Portolan Capital Management, LLC and what type of investor is it?
Portolan Capital Management, LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $2.7B, spread across 148 disclosed positions.
What are Portolan Capital Management, LLC's largest equity positions?
Based on the latest 13F filing, Portolan Capital Management, LLC's top holdings by market value are:
1. Vishay Precision Group (VPG) — $151.1M (5.7%)
2. Virtu Financial Inc-class A (VIRT) — $127.6M (4.8%)
3. Ttm Technologies (TTMI) — $95.0M (3.6%)
4. Modine Manufacturing Co (MOD) — $83.8M (3.1%)
5. Qualys Inc (QLYS) — $72.8M (2.7%)
What changes did Portolan Capital Management, LLC make in its most recent portfolio filing?
In the latest reported quarter, Portolan Capital Management, LLC made 176 notable position adjustments: 36 new positions were initiated, 50 existing holdings were added to, 58 positions were partially reduced, and 32 were completely exited. The largest of these moves: New buy: Penguin Solutions Inc (PENG); Sold out: Pbf Energy Inc-class A (PBF); Sold out: Crescent Energy Inc-a (CRGY); New buy: Sportradar Group AG (SRAD); New buy: Bandwidth Inc-class A (BAND)
What sectors does Portolan Capital Management, LLC focus on?
Portolan Capital Management, LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 41.2%
• Financials: 12.7%
• Consumer Discretionary: 11.9%
• Health Care: 11.6%
• Industrials: 11.5%
• Materials: 3.1%
Investment Profile
Portolan Capital Management, LLC returned an annualized 17.9% over the trailing 36 months — underperforming the S&P 500 by 12.7 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.61 (more volatile than the market) and a 64% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 41.2% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 85 over the past 4 quarters — a shift toward more active trading.
It has added to its VPG position over the past two quarters (+$117.3M, now $151.1M), while trimming CSTL over the same stretch (-$59.4M, still holding $7.8M).
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Developer Access
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