Portolan Capital Management, LLC
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Portolan Capital Management, LLC reported 116 stock positions worth $1.3 billion. Its top holding was Super Micro Computer (SMCI) at 3.5% of the portfolio, followed by Celestica (CLS, 3.4%) and Lantheus (LNTH, 2.5%). Compared with Q4 2023, it opened 24 new positions, sold out of 35, added to 53 and reduced 38. The biggest buy was a new position in Micron Technology (MU) and the biggest sale Super Micro Computer (SMCI, shares −81%).
- Most Recent 13F
- Q2 2026
- Location
- BOSTON, MA
- CIK
- 0001350290
- Portfolio Value
- $1.3B (Q1 2024)
- SEC Filing
- 0001104659-24-061786 ↗ filed May 15, 2024
Holdings Value
Holdings 116 stocks · $1.3B
| SMCI Super Micro Computer Inc. | 3.47% | 45,080 | $45.5M | Reduce -81.4% |
| CLS Celestica Inc. | 3.42% | 1,000,489 | $45.0M | Reduce -18.9% |
| LNTH Lantheus Holdings Inc. | 2.49% | 525,742 | $32.7M | Add +23.1% |
| ELF Elf Beauty Inc. | 2.49% | 166,704 | $32.7M | Reduce -49.5% |
| BIO Bio-Rad Laboratories-A | 2.40% | 90,992 | $31.5M | Add +58.9% |
| HNST The Honest Co. Inc. | 2.31% | 7,488,703 | $30.3M | Reduce -0.9% |
| KTOS Kratos Defense & Security | 2.22% | 1,584,691 | $29.1M | Add +115.3% |
| QTRX Quanterix Corp. | 2.09% | 1,162,829 | $27.4M | Reduce -10.3% |
| ZETA Zeta Global Holdings Corp. Class A | 1.96% | 2,349,462 | $25.7M | Add +77.8% |
| WDC Western Digital Corp. | 1.95% | 375,140 | $25.6M | Add +174.2% |
| MOD Modine Manufacturing Co. | 1.95% | 268,900 | $25.6M | Reduce -55.0% |
| UTHR United Therapeutics Corp. | 1.94% | 110,922 | $25.5M | Add +20.8% |
| SG Sweetgreen Inc. Class A | 1.92% | 997,525 | $25.2M | Add +1.4% |
| CSTL Castle Biosciences Inc. | 1.76% | 1,043,410 | $23.1M | Add +43.2% |
| NVT Nvent Electric PLC | 1.64% | 285,196 | $21.5M | Add +253.4% |
| IIIV I3 Verticals Inc. Class A | 1.61% | 925,182 | $21.2M | Add +223.5% |
| BIDU Baidu Inc. - Spon ADR | 1.54% | 192,422 | $20.3M | Add +92.4% |
| AAOI Applied Optoelectronics Inc. | 1.51% | 1,434,900 | $19.9M | Reduce -6.8% |
| WKME Walkme Ltd. | 1.49% | 2,272,092 | $19.5M | Add +22.0% |
| CROX Crocs Inc. | 1.46% | 133,196 | $19.2M | Add +23.9% |
| TGLS Tecnoglass Holdings Inc. | 1.45% | 366,228 | $19.1M | Reduce -24.0% |
| MU Micron Technology Inc. | 1.43% | 159,744 | $18.8M | New |
| AEM Agnico Eagle Mines Ltd. | 1.42% | 311,675 | $18.6M | Reduce -28.4% |
| NTRA Natera Inc. | 1.40% | 201,218 | $18.4M | Add +117.7% |
| SMWB Similarweb Ltd. | 1.40% | 2,040,602 | $18.4M | Add +6.7% |
| PENG Penguin Solutions Inc. filed as SMART GLOBAL HLDGS INC | 1.39% | 693,056 | $18.2M | Add +13.9% |
| KRUS Kura Sushi USA Inc. Class A | 1.30% | 148,787 | $17.1M | Add +98.6% |
| BLFS Biolife Solutions Inc. | 1.23% | 871,537 | $16.2M | Add +67.0% |
| FOUR SHIFT4 Payments Inc. Class A | 1.20% | 239,309 | $15.8M | Add +10.9% |
| ACMR Acm Research Inc. Class A | 1.20% | 538,433 | $15.7M | Reduce -32.6% |
| STKL Sunopta Inc. | 1.19% | 2,267,173 | $15.6M | Reduce -12.9% |
| BASE Couchbase Inc. | 1.18% | 590,454 | $15.5M | Reduce -26.5% |
| RCM R1 RCM Inc. | 1.08% | 1,097,612 | $14.1M | Add +52.5% |
| PBPB Potbelly Corp. | 1.06% | 1,145,952 | $13.9M | New |
| WRBY Warby Parker Inc. Class A | 1.03% | 997,884 | $13.6M | Add +17.6% |
| SKX Skechers USA Inc. Class A | 1.00% | 214,075 | $13.1M | Add +77.6% |
| INDI Indie Semiconductor Inc. Class A | 0.99% | 1,843,986 | $13.1M | Reduce -25.3% |
| CLBT Cellebrite Di Ltd. | 0.97% | 1,143,672 | $12.7M | New |
| GENI Genius Sports Ltd. | 0.96% | 2,204,049 | $12.6M | Reduce -7.5% |
| META Meta Platforms Inc. Class A | 0.94% | 25,425 | $12.3M | Reduce -34.8% |
| FLEX Flex Ltd. | 0.94% | 430,205 | $12.3M | Add +38.6% |
| SIMO Silicon Motion Technol-ADR | 0.94% | 159,963 | $12.3M | New |
| AU Anglogold Ashanti PLC | 0.91% | 538,657 | $12.0M | Add +42.8% |
| NOG Northern Oil and Gas Inc. | 0.90% | 296,721 | $11.8M | Add +74.4% |
| INVE Inve Technologies Inc. filed as IDENTIV INC | 0.87% | 1,442,663 | $11.4M | Add +59.0% |
| GDS GDS Holdings Ltd. - ADR filed as GDS HLDGS LTD | 0.84% | 1,663,662 | $11.1M | New |
| VRT Vertiv Holdings Co. Class A | 0.81% | 129,923 | $10.6M | Reduce -48.3% |
| TTWO Take-Two Interactive Softwre | 0.78% | 69,117 | $10.3M | Reduce -6.6% |
| AIG American International Group | 0.76% | 127,177 | $9.9M | New |
| MTRX Matrix Service Co. | 0.72% | 723,318 | $9.4M | Add +16.7% |
| KMPR Kemper Corp. | 0.69% | 146,171 | $9.1M | New |
| ALT Altimmune Inc. | 0.69% | 887,255 | $9.0M | New |
| RPAY Repay Holdings Corp. | 0.68% | 815,507 | $9.0M | Add +36.0% |
| RPRX Royalty Pharma PLC Class A | 0.67% | 288,378 | $8.8M | Add +92.5% |
| BV Brightview Holdings Inc. | 0.65% | 720,380 | $8.6M | New |
| FORR Forrester Research Inc. | 0.65% | 395,638 | $8.5M | Add +166.1% |
| STNG Scorpio Tankers Inc. | 0.65% | 119,033 | $8.5M | Add +164.1% |
| NRDY Nerdy Inc. | 0.65% | 2,922,160 | $8.5M | Add +29.8% |
| ARCT Arcturus Therapeutics Holdin | 0.63% | 244,659 | $8.3M | Add +67.7% |
| CELH Celsius Holdings Inc. | 0.63% | 99,262 | $8.2M | Add +51.5% |
| TTMI TTM Technologies | 0.62% | 517,943 | $8.1M | New |
| EGO Eldorado Gold Corp. | 0.62% | 575,457 | $8.1M | Add +78.3% |
| VKTX Viking Therapeutics Inc. | 0.61% | 97,583 | $8.0M | Reduce -71.3% |
| ENVA Enova International Inc. | 0.59% | 123,513 | $7.8M | Add +38.6% |
| HDSN Hudson Technologies Inc. | 0.57% | 685,549 | $7.5M | Reduce -26.1% |
| AXTI Axt Inc. | 0.56% | 1,596,232 | $7.3M | Add +215.9% |
| CTOS Custom Truck One Source Inc. | 0.55% | 1,244,282 | $7.2M | Add +19.4% |
| MXCT Maxcyte Inc. | 0.55% | 1,721,777 | $7.2M | Reduce -37.5% |
| AVAV Aerovironment Inc. | 0.54% | 46,258 | $7.1M | New |
| SKY Champion Homes Inc. filed as SKYLINE CHAMPION CORPORATION | 0.52% | 80,647 | $6.9M | Reduce -2.2% |
| EVER Everquote Inc. Class A | 0.52% | 367,241 | $6.8M | Reduce -34.7% |
| DELL Dell Technologies -C | 0.52% | 59,569 | $6.8M | Reduce -38.9% |
| ORCL Oracle Corp. | 0.50% | 52,313 | $6.6M | Add +85.4% |
| GFL GFL Environmental Inc.-Sub VT | 0.50% | 189,386 | $6.5M | Add +48.7% |
| BELFB Bel Fuse Inc. Class B | 0.49% | 107,697 | $6.5M | Reduce -43.5% |
| QNST Quinstreet Inc. | 0.48% | 360,605 | $6.4M | Reduce -42.1% |
| CRESCENT PT ENERGY CORP | 0.48% | 776,860 | $6.4M | Add +151.9% |
| MRVI Maravai Lifesciences Hldgs-A | 0.45% | 680,456 | $5.9M | New |
| PAYO Payoneer Global Inc. | 0.45% | 1,212,317 | $5.9M | Reduce -35.4% |
| CDMO Avid Bioservices Inc. | 0.44% | 866,885 | $5.8M | Add +97.7% |
| INSW International Seaways Inc. | 0.42% | 102,803 | $5.5M | New |
| TTGT Techtarget Holdings Inc. | 0.41% | 162,883 | $5.4M | New |
| CYRX Cryoport Inc. | 0.40% | 295,652 | $5.2M | New |
| APLD Applied Digital Corp. | 0.39% | 1,206,320 | $5.2M | Reduce -43.2% |
| DOCN Digitalocean Holdings Inc. | 0.38% | 132,137 | $5.0M | Reduce -51.7% |
| OVERSEAS SHIPHOLDING GROUP-A | 0.38% | 771,227 | $4.9M | Add +9.2% |
| NVEI Nuvei Corp.-Subordinate VTG | 0.37% | 154,989 | $4.9M | Reduce -44.9% |
| NVGS Navigator Holdings Ltd. | 0.36% | 309,005 | $4.7M | Add +13.3% |
| UCTT Ultra Clean Holdings Inc. | 0.35% | 99,992 | $4.6M | New |
| RDNT Radnet Inc. | 0.35% | 93,981 | $4.6M | Reduce -34.1% |
| SMTC Semtech Corp. | 0.35% | 165,917 | $4.6M | New |
| GENK Gen Restaurant Group Inc. | 0.33% | 365,662 | $4.3M | Add +32.7% |
| NMM Navios Maritime Partners LP | 0.32% | 98,902 | $4.2M | New |
| AMPH Amphastar Pharmaceuticals Inc. | 0.30% | 91,005 | $4.0M | Reduce -38.7% |
| AZZ Azz Inc. | 0.30% | 51,323 | $4.0M | New |
| DIBS 1STDIBS.COM Inc. | 0.30% | 654,677 | $3.9M | Reduce -13.0% |
| OPK Opko Health Inc. | 0.30% | 3,241,418 | $3.9M | Add +95.1% |
| GTES Gates Industrial Corp. UK Ltd. | 0.29% | 217,032 | $3.8M | New |
| RELY Remitly Global Inc. | 0.28% | 175,827 | $3.6M | New |
| ALRM Alarm.com Holdings Inc. | 0.28% | 50,201 | $3.6M | New |
Portfolio Sells Q4 2023 → Q1 2024
| SMCI Super Micro Computer Inc. | Reduce -81.4% | 3.47% | −2.57 |
| ELF Elf Beauty Inc. | Reduce -49.5% | 2.49% | −1.68 |
| MOD Modine Manufacturing Co. | Reduce -55.0% | 1.95% | −1.17 |
| AAOI Applied Optoelectronics Inc. | Reduce -6.8% | 1.51% | −1.09 |
| PDD PDD Holdings Inc. | Sold out | 0.00% | −1.03 |
| QTRX Quanterix Corp. | Reduce -10.3% | 2.09% | −1.01 |
| BILL Bill Holdings Inc. | Sold out | 0.00% | −0.90 |
| FSLY Fastly Inc. Class A | Sold out | 0.00% | −0.90 |
| APLD Applied Digital Corp. | Reduce -43.2% | 0.39% | −0.86 |
| ASUR Asure Software Inc. | Sold out | 0.00% | −0.85 |
| INDI Indie Semiconductor Inc. Class A | Reduce -25.3% | 0.99% | −0.76 |
| HIMS Hims & Hers Health Inc. | Sold out | 0.00% | −0.73 |
| RH RH | Sold out | 0.00% | −0.72 |
| COMP Compass Inc. Class A | Sold out | 0.00% | −0.67 |
| AEM Agnico Eagle Mines Ltd. | Reduce -28.4% | 1.42% | −0.67 |
| PRCH Porch Group Inc. | Reduce -80.3% | 0.21% | −0.65 |
| DCGO Docgo Inc. | Sold out | 0.00% | −0.65 |
| BELFB Bel Fuse Inc. Class B | Reduce -43.5% | 0.49% | −0.62 |
| METC Ramaco Resources Inc. Class A | Sold out | 0.00% | −0.61 |
| MXCT Maxcyte Inc. | Reduce -37.5% | 0.55% | −0.58 |
| AMKR Amkor Technology Inc. | Sold out | 0.00% | −0.58 |
| APPS Digital Turbine Inc. | Sold out | 0.00% | −0.55 |
| RELL Richardson Elec Ltd. | Reduce -97.4% | 0.01% | −0.53 |
| HDSN Hudson Technologies Inc. | Reduce -26.1% | 0.57% | −0.52 |
| AMPH Amphastar Pharmaceuticals Inc. | Reduce -38.7% | 0.30% | −0.50 |
| DOCN Digitalocean Holdings Inc. | Reduce -51.7% | 0.38% | −0.49 |
| TGLS Tecnoglass Holdings Inc. | Reduce -24.0% | 1.45% | −0.47 |
| AAN The Aaron's Co. Inc. | Sold out | 0.00% | −0.47 |
| OLPX Olaplex Holdings Inc. | Sold out | 0.00% | −0.43 |
| AGL Agilon Health Inc. | Sold out | 0.00% | −0.42 |
| PAYO Payoneer Global Inc. | Reduce -35.4% | 0.45% | −0.41 |
| BASE Couchbase Inc. | Reduce -26.5% | 1.18% | −0.40 |
| GENI Genius Sports Ltd. | Reduce -7.5% | 0.96% | −0.33 |
| PACK Ranpak Holdings Corp. | Sold out | 0.00% | −0.32 |
| HUCK Huckleberry AI Inc. | Sold out | 0.00% | −0.30 |
| KOS Kosmos Energy Ltd. | Sold out | 0.00% | −0.28 |
| NVEI Nuvei Corp.-Subordinate VTG | Reduce -44.9% | 0.37% | −0.27 |
| META Meta Platforms Inc. Class A | Reduce -34.8% | 0.94% | −0.27 |
| TTWO Take-Two Interactive Softwre | Reduce -6.6% | 0.78% | −0.26 |
| MGPI MGP Ingredients Inc. | Sold out | 0.00% | −0.25 |
| THCH TH International Ltd./Cayman | Reduce -62.5% | 0.07% | −0.25 |
| CONTEXTLOGIC INC - A | Sold out | 0.00% | −0.25 |
| VRT Vertiv Holdings Co. Class A | Reduce -48.3% | 0.81% | −0.25 |
| TLS Telos Corporation | Reduce -50.9% | 0.23% | −0.25 |
| BAND Bandwidth Inc. Class A | Sold out | 0.00% | −0.24 |
| IMMR Immersion Corporation | Sold out | 0.00% | −0.22 |
| SKIN Skinhealth Systems Inc. | Sold out | 0.00% | −0.22 |
| QNST Quinstreet Inc. | Reduce -42.1% | 0.48% | −0.21 |
| SOLO BRANDS INC | Sold out | 0.00% | −0.20 |
| TASK Taskus Inc. Class A | Sold out | 0.00% | −0.19 |
Portfolio Buys Q4 2023 → Q1 2024
| MU Micron Technology Inc. | New | 1.43% | +1.43 |
| WDC Western Digital Corp. | Add +174.2% | 1.95% | +1.32 |
| NVT Nvent Electric PLC | Add +253.4% | 1.64% | +1.22 |
| IIIV I3 Verticals Inc. Class A | Add +223.5% | 1.61% | +1.08 |
| PBPB Potbelly Corp. | New | 1.06% | +1.06 |
| CLBT Cellebrite Di Ltd. | New | 0.97% | +0.97 |
| SG Sweetgreen Inc. Class A | Add +1.4% | 1.92% | +0.95 |
| SIMO Silicon Motion Technol-ADR | New | 0.94% | +0.94 |
| ZETA Zeta Global Holdings Corp. Class A | Add +77.8% | 1.96% | +0.94 |
| KTOS Kratos Defense & Security | Add +115.3% | 2.22% | +0.91 |
| NTRA Natera Inc. | Add +117.7% | 1.40% | +0.90 |
| GDS GDS Holdings Ltd. - ADR | New | 0.84% | +0.84 |
| KRUS Kura Sushi USA Inc. Class A | Add +98.6% | 1.30% | +0.81 |
| BIO Bio-Rad Laboratories-A | Add +58.9% | 2.40% | +0.78 |
| AIG American International Group | New | 0.76% | +0.76 |
| KMPR Kemper Corp. | New | 0.69% | +0.69 |
| ALT Altimmune Inc. | New | 0.69% | +0.69 |
| BV Brightview Holdings Inc. | New | 0.65% | +0.65 |
| TTMI TTM Technologies | New | 0.62% | +0.62 |
| CROX Crocs Inc. | Add +23.9% | 1.46% | +0.58 |
| AVAV Aerovironment Inc. | New | 0.54% | +0.54 |
| SMWB Similarweb Ltd. | Add +6.7% | 1.40% | +0.51 |
| BIDU Baidu Inc. - Spon ADR | Add +92.4% | 1.54% | +0.50 |
| BLFS Biolife Solutions Inc. | Add +67.0% | 1.23% | +0.49 |
| AXTI Axt Inc. | Add +215.9% | 0.56% | +0.45 |
| MRVI Maravai Lifesciences Hldgs-A | New | 0.45% | +0.45 |
| INSW International Seaways Inc. | New | 0.42% | +0.42 |
| RCM R1 RCM Inc. | Add +52.5% | 1.08% | +0.41 |
| TTGT Techtarget Holdings Inc. | New | 0.41% | +0.41 |
| STNG Scorpio Tankers Inc. | Add +164.1% | 0.65% | +0.41 |
| CYRX Cryoport Inc. | New | 0.40% | +0.40 |
| CSTL Castle Biosciences Inc. | Add +43.2% | 1.76% | +0.39 |
| PENG Penguin Solutions Inc. | Add +13.9% | 1.39% | +0.38 |
| UCTT Ultra Clean Holdings Inc. | New | 0.35% | +0.35 |
| SMTC Semtech Corp. | New | 0.35% | +0.35 |
| NOG Northern Oil and Gas Inc. | Add +74.4% | 0.90% | +0.35 |
| SKX Skechers USA Inc. Class A | Add +77.6% | 1.00% | +0.34 |
| NMM Navios Maritime Partners LP | New | 0.32% | +0.32 |
| CELH Celsius Holdings Inc. | Add +51.5% | 0.63% | +0.31 |
| AZZ Azz Inc. | New | 0.30% | +0.30 |
| FORR Forrester Research Inc. | Add +166.1% | 0.65% | +0.30 |
| RPRX Royalty Pharma PLC Class A | Add +92.5% | 0.67% | +0.30 |
| CRESCENT PT ENERGY CORP | Add +151.9% | 0.48% | +0.30 |
| AU Anglogold Ashanti PLC | Add +42.8% | 0.91% | +0.29 |
| GTES Gates Industrial Corp. UK Ltd. | New | 0.29% | +0.29 |
| RELY Remitly Global Inc. | New | 0.28% | +0.28 |
| ALRM Alarm.com Holdings Inc. | New | 0.28% | +0.28 |
| EGO Eldorado Gold Corp. | Add +78.3% | 0.62% | +0.25 |
| ORCL Oracle Corp. | Add +85.4% | 0.50% | +0.24 |
| RPAY Repay Holdings Corp. | Add +36.0% | 0.68% | +0.24 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 148 | $2.7B | VPG, VIRT, TTMI, MOD, QLYS |
| Q1 2026 | 144 | $1.9B | MOD, TTMI, CLS, VIRT, AKAM |
| Q4 2025 | 155 | $1.9B | TTMI, MOD, CSTL, CLS, AKAM |
| Q3 2025 | 119 | $1.8B | MOD, TTMI, ELF, DBRG, CLS |
| Q2 2025 | 118 | $1.6B | CLS, KTOS, ELF, AVAV, MOD |
| Q1 2025 | 109 | $1.3B | LNTH, SLM, KTOS, GENI, MOD |
| Q4 2024 | 131 | $1.5B | LNTH, CLS, SMTC, MOD, HNST |
| Q3 2024 | 129 | $1.4B | LNTH, ZETA, KTOS, TLN, CLS |
| Q2 2024 | 117 | $1.2B | LNTH, CLS, SMCI, ZETA, KTOS |
| Q1 2024 | 116 | $1.3B | SMCI, CLS, LNTH, ELF, BIO |