$789 Million is the total value of Portolan Capital Management's 123 reported holdings in Q4 2015. The portfolio turnover from Q3 2015 to Q4 2015 was 55.3% .
| Value | Shares | ↓ Weighting | ||||||
|---|---|---|---|---|---|---|---|---|
| SAAS | Buy | INCONTACT, INC. | $40,889,000 | +50.0% | 4,286,052 | +18.1% | 5.18% | +43.5% |
| EGHT | Buy | 8X8, INC. | $28,508,000 | +80.4% | 2,489,751 | +30.3% | 3.61% | +72.5% |
| STMP | Buy | STAMPS.COM. INC, | $27,746,000 | +89.1% | 253,135 | +27.7% | 3.52% | +80.9% |
| CALD | Sell | CALLIDUS SOFTWARE, INC. | $24,436,000 | +1.3% | 1,315,861 | -7.3% | 3.10% | -3.1% |
| CWST | Sell | CASELLA WASTE SYSTEMS, INC. | $20,587,000 | -9.8% | 3,442,603 | -12.5% | 2.61% | -13.7% |
| ANIK | Sell | ANIKA THERAPEUTICS, INC. | $18,645,000 | -8.3% | 488,595 | -23.5% | 2.36% | -12.3% |
| EEFT | Buy | EURONET WORLDWIDE, INC. | $18,395,000 | +4.8% | 253,976 | +7.2% | 2.33% | +0.2% |
| GT | Buy | GOODYEAR TIRE & RUBBER CO. | $14,883,000 | +80.2% | 455,569 | +61.8% | 1.89% | +72.4% |
| GOOG | New | ALPHABET INC. | $14,573,000 | – | 19,203 | +100.0% | 1.85% | – |
| GRPN | Buy | GROUPON, INC. | $13,733,000 | -2.4% | 4,473,394 | +3.7% | 1.74% | -6.6% |
| SQI | Buy | SCIQUEST, INC. | $13,283,000 | +106.1% | 1,024,160 | +58.9% | 1.68% | +97.1% |
| PINC | Buy | PREMIER, INC. | $13,110,000 | +62.2% | 371,706 | +58.1% | 1.66% | +55.2% |
| FLML | Sell | FLAMEL TECHNOLOGIES | $12,739,000 | -36.2% | 1,043,292 | -14.8% | 1.62% | -38.9% |
| RNG | Buy | RINGCENTRAL, INC. | $12,683,000 | +77.8% | 537,855 | +36.9% | 1.61% | +70.1% |
| CSU | Buy | CAPITAL SENIOR LIVING CORPORATION | $12,419,000 | +64.3% | 595,353 | +57.9% | 1.57% | +57.1% |
| SAVE | Buy | SPIRIT AIRLINES, INC. | $12,353,000 | +24.0% | 309,996 | +47.2% | 1.57% | +18.6% |
| MKTO | Buy | MARKETO, INC. | $12,153,000 | +94.0% | 423,303 | +92.0% | 1.54% | +85.5% |
| NWSA | Buy | NEWS CORPORATION | $11,099,000 | +45.8% | 830,728 | +37.8% | 1.41% | +39.6% |
| AON | Buy | AON PLC | $11,041,000 | +6.9% | 119,742 | +2.7% | 1.40% | +2.2% |
| FRGI | Buy | FIESTA RESTAURANT GROUP, INC. | $10,532,000 | +53.4% | 313,454 | +107.2% | 1.34% | +46.7% |
| LOCK | New | LIFELOCK, INC. | $8,897,000 | – | 619,991 | +100.0% | 1.13% | – |
| CRCM | Buy | CARE COM, INC. | $8,599,000 | +287.0% | 1,201,003 | +177.8% | 1.09% | +270.7% |
| CPSI | New | COMPUTER PROGRAMS & SYSTEMS | $8,333,000 | – | 167,505 | +100.0% | 1.06% | – |
| ABG | New | ASBURY AUTOMOTIVE GROUP, INC. | $8,112,000 | – | 120,287 | +100.0% | 1.03% | – |
| XOXO | Sell | XO GROUP, INC. | $8,084,000 | +11.6% | 503,348 | -1.8% | 1.02% | +6.9% |
| EPAY | New | BOTTOMLINE TECHNOLOGIES, INC. | $7,735,000 | – | 260,181 | +100.0% | 0.98% | – |
| COVS | Buy | COVISINT CORPORATION | $7,680,000 | +21.1% | 3,072,129 | +4.2% | 0.97% | +15.8% |
| VG | Sell | VONAGE CORPORATION | $7,655,000 | -34.0% | 1,333,679 | -32.4% | 0.97% | -36.8% |
| TSEM | Sell | TOWER SEMICONDUCTOR LTD. | $7,638,000 | -41.2% | 543,278 | -46.1% | 0.97% | -43.7% |
| AAOI | Buy | APPLIED OPTOELECTRONICS, INC. | $7,495,000 | +144.7% | 436,759 | +167.8% | 0.95% | +134.0% |
| TUESQ | Buy | TUESDAY MORNING CORPORATION | $7,487,000 | +85.3% | 1,151,868 | +54.2% | 0.95% | +77.4% |
| TW | New | TOWERS WATSON & CO. | $7,464,000 | – | 58,105 | +100.0% | 0.95% | – |
| RDWR | Buy | RADWARE LTD. | $7,454,000 | +30.4% | 485,889 | +38.2% | 0.94% | +24.8% |
| SQNM | Sell | SEQUENOM, INC. | $7,157,000 | -9.9% | 4,363,944 | -3.9% | 0.91% | -13.9% |
| ABMD | Sell | ABIOMED, INC. | $7,142,000 | -25.3% | 79,110 | -23.3% | 0.90% | -28.6% |
| ZAYO | New | ZAYO GROUP HOLDINGS, INC. | $7,100,000 | – | 267,009 | +100.0% | 0.90% | – |
| DXLG | Sell | DESTINATION XL GROUP, INC. | $7,061,000 | -25.7% | 1,279,113 | -21.8% | 0.90% | -28.9% |
| CVLG | New | COVENANT TRANSPORTATION GROUP, INC. | $6,961,000 | – | 368,486 | +100.0% | 0.88% | – |
| FIVN | Sell | FIVE9, INC. | $6,939,000 | +29.6% | 797,530 | -44.9% | 0.88% | +24.0% |
| ZBRA | New | ZEBRA TECHNOLOGIES, INC. | $6,908,000 | – | 99,182 | +100.0% | 0.88% | – |
| EA | Sell | ELECTRONIC ARTS | $6,836,000 | -21.2% | 99,483 | -22.3% | 0.87% | -24.6% |
| FNF | Buy | FIDELITY NATIONAL FINANCIAL, INC. | $6,826,000 | +1.3% | 196,896 | +3.6% | 0.86% | -3.1% |
| LIOX | Sell | LIONBRIDGE TECHNOLOGIES, INC. | $6,763,000 | -17.2% | 1,377,299 | -16.7% | 0.86% | -20.8% |
| FVE | Buy | FIVE STAR QUALITY CARE, INC. | $6,505,000 | +58.2% | 2,045,562 | +53.8% | 0.82% | +51.2% |
| MODN | Buy | MODEL N, INC. | $6,288,000 | +210.8% | 563,419 | +178.7% | 0.80% | +197.4% |
| VRTU | Sell | VIRTUSA CORPORATION | $6,188,000 | -31.8% | 149,676 | -15.4% | 0.78% | -34.8% |
| BIDU | Sell | BAIDU, INC. | $6,135,000 | -12.9% | 32,451 | -36.7% | 0.78% | -16.7% |
| CAKE | Sell | CHEESECAKE FACTORY, INC. | $5,799,000 | -44.5% | 125,768 | -35.1% | 0.74% | -46.9% |
| RH | Sell | RESTORATION HARDWARE, INC. | $5,795,000 | -54.8% | 72,935 | -46.9% | 0.73% | -56.8% |
| MTCH | New | MATCH GROUP, INC. | $5,768,000 | – | 425,681 | +100.0% | 0.73% | – |
| BKD | Buy | BROOKDALE SENIOR LIVING, INC. | $5,712,000 | +54.5% | 309,405 | +92.2% | 0.72% | +47.8% |
| BSFT | New | BROADSOFT, INC. | $5,652,000 | – | 159,842 | +100.0% | 0.72% | – |
| RAX | New | RACKSPACE HOSTING, INC. | $5,639,000 | – | 222,715 | +100.0% | 0.72% | – |
| FLWS | Buy | 1-800-FLOWERS.COM | $5,571,000 | +17.4% | 765,181 | +46.7% | 0.71% | +12.2% |
| FEYE | New | FIREEYE, INC. | $5,556,000 | – | 267,901 | +100.0% | 0.70% | – |
| PRGO | New | PERRIGO COMPANY PLC | $5,537,000 | – | 38,264 | +100.0% | 0.70% | – |
| AKAM | Sell | AKAMAI TECHNOLOGIES, INC. | $5,191,000 | -61.0% | 98,637 | -48.8% | 0.66% | -62.7% |
| SFM | Sell | SPROUTS FARMERS MARKET, INC. | $5,162,000 | -39.0% | 194,139 | -51.6% | 0.65% | -41.7% |
| DDD | New | 3 D SYSTEMS CORPORATION | $5,126,000 | – | 589,826 | +100.0% | 0.65% | – |
| AAN | Buy | AARON RENTS, INC. | $5,031,000 | -15.4% | 224,694 | +36.5% | 0.64% | -19.0% |
| CLGX | Buy | CORELOGIC, INC. | $5,013,000 | -1.4% | 148,046 | +8.4% | 0.64% | -5.8% |
| CUDA | Sell | BARRACUDA NETWORKS, INC. | $4,995,000 | -37.5% | 267,374 | -47.9% | 0.63% | -40.2% |
| GNW | New | GENWORTH FINANCIAL, INC. | $4,935,000 | – | 1,323,055 | +100.0% | 0.62% | – |
| SCOR | New | COMSCORE, INC. | $4,904,000 | – | 119,175 | +100.0% | 0.62% | – |
| WIX | Buy | WIX .COM | $4,873,000 | +43.3% | 214,200 | +9.7% | 0.62% | +37.0% |
| STE | New | STERIS PLC | $4,766,000 | – | 63,257 | +100.0% | 0.60% | – |
| CHKP | CHECK POINT SOFTWARE TECHNOLOGIES | $4,612,000 | +2.6% | 56,671 | 0.0% | 0.58% | -1.8% | |
| CTSH | Buy | COGNIZANT TECHNOLOGY SOLUTIONS CORPORATION | $4,601,000 | +173.7% | 76,660 | +185.5% | 0.58% | +161.4% |
| EXPE | New | EXPEDIA, INC. | $4,575,000 | – | 36,809 | +100.0% | 0.58% | – |
| UTHR | New | UNITED THERAPEUTICS CORPORATION | $4,535,000 | – | 28,955 | +100.0% | 0.58% | – |
| SHOR | New | SHORETEL, INC. | $4,479,000 | – | 506,096 | +100.0% | 0.57% | – |
| WDC | New | WESTERN DIGITAL CORPORATION | $4,425,000 | – | 73,686 | +100.0% | 0.56% | – |
| TWTR | New | TWITTER, INC. | $4,271,000 | – | 184,554 | +100.0% | 0.54% | – |
| AAP | New | ADVANCE AUTO PARTS, INC. | $4,136,000 | – | 27,481 | +100.0% | 0.52% | – |
| NEWP | Sell | NEWPORT CORPORATION | $4,104,000 | -29.0% | 258,587 | -38.5% | 0.52% | -32.1% |
| TAST | Sell | CARROLS RESTAURANT GROUP, INC. | $3,990,000 | -22.3% | 339,842 | -21.3% | 0.51% | -25.7% |
| TNGO | Sell | TANGOE, INC. | $3,979,000 | -33.5% | 474,252 | -43.0% | 0.50% | -36.4% |
| QLYS | Sell | QUALYS, INC. | $3,808,000 | -60.1% | 115,067 | -65.7% | 0.48% | -61.8% |
| AGM | Buy | FEDERAL AGRICULTURAL MORTGAGE CORPORATION | $3,800,000 | +25.2% | 120,364 | +2.8% | 0.48% | +19.9% |
| TTGT | Sell | TECHTARGET, INC. | $3,666,000 | -27.7% | 456,568 | -23.3% | 0.46% | -30.8% |
| BIO | New | BIO-RAD LABORATORIES, INC. | $3,616,000 | – | 26,077 | +100.0% | 0.46% | – |
| LUV | Sell | SOUTHWEST AIRLINES CO. | $3,537,000 | -32.8% | 82,150 | -40.6% | 0.45% | -35.7% |
| BLUE | New | BLUEBIRD BIO, INC. | $3,513,000 | – | 54,710 | +100.0% | 0.44% | – |
| 3106PS | Buy | DELPHI AUTOMOTIVE PLC | $3,438,000 | +50.0% | 40,103 | +33.1% | 0.44% | +43.4% |
| RESI | Sell | ALTISOURCE RESIDENTIAL CORPORATION | $3,379,000 | -58.0% | 272,296 | -52.9% | 0.43% | -59.8% |
| SFLY | Sell | SHUTTERFLY, INC. | $3,344,000 | -71.2% | 75,055 | -76.9% | 0.42% | -72.4% |
| DESTQ | Sell | DESTINATION MATERNITY CORPORATION | $3,323,000 | -17.1% | 381,134 | -12.3% | 0.42% | -20.7% |
| WEB | Sell | WEB.COM GROUP, INC | $3,195,000 | -23.4% | 159,659 | -19.3% | 0.40% | -26.8% |
| LGF | New | LIONS GATE ENTERTAINMENT CORPORATION | $3,110,000 | – | 96,010 | +100.0% | 0.39% | – |
| GNTX | Buy | GENTEX CORPORATION | $3,084,000 | +5.1% | 192,656 | +1.7% | 0.39% | +0.5% |
| BBRG | Sell | BRAVO BRIO RESTAURANT GROUP, INC. | $2,984,000 | -32.9% | 331,523 | -16.0% | 0.38% | -35.8% |
| SFS | Sell | SMART & FINAL STORES, INC. | $2,716,000 | -58.7% | 149,148 | -64.4% | 0.34% | -60.5% |
| AAL | Sell | AMERICAN AIRLINES GROUP, INC. | $2,589,000 | -45.6% | 61,123 | -50.2% | 0.33% | -48.0% |
| CTB | Sell | COOPER TIRE & RUBBER CO. | $2,494,000 | -73.6% | 65,885 | -72.5% | 0.32% | -74.8% |
| CCOI | Sell | COGENT COMMUNICATIONS | $2,468,000 | -35.9% | 71,142 | -49.8% | 0.31% | -38.6% |
| SUPN | New | SUPERNUS PHARMACEUTICALS, INC. | $2,457,000 | – | 182,789 | +100.0% | 0.31% | – |
| CRY | Sell | CRYOLIFE, INC. | $2,417,000 | -35.5% | 224,230 | -41.7% | 0.31% | -38.3% |
| ALOG | New | ANALOGIC CORPORATION | $2,384,000 | – | 28,858 | +100.0% | 0.30% | – |
| UIS | New | UNISYS CORPORATION | $2,376,000 | – | 215,002 | +100.0% | 0.30% | – |
| DSW | Sell | DSW, INC. | $2,154,000 | -75.9% | 90,294 | -74.4% | 0.27% | -76.9% |
| RCII | Buy | RENT-A-CENTER, INC. | $2,114,000 | -29.9% | 141,200 | +13.5% | 0.27% | -33.0% |
| BBY | New | BEST BUY CO., INC. | $2,090,000 | – | 68,624 | +100.0% | 0.26% | – |
| PNTPQ | New | PATRIOT NATIONAL, INC. | $1,994,000 | – | 297,182 | +100.0% | 0.25% | – |
| MGA | New | MAGNA INTERNATIONAL, INC. | $1,946,000 | – | 47,968 | +100.0% | 0.25% | – |
| SM | Sell | SM ENERGY CO. | $1,946,000 | -73.2% | 98,992 | -56.3% | 0.25% | -74.3% |
| CBPX | Sell | CONTINENTAL BLDG PRODS, INC. | $1,940,000 | -73.2% | 111,101 | -68.5% | 0.25% | -74.3% |
| ABTL | Sell | AUTOBYTEL, INC. | $1,793,000 | -69.1% | 79,459 | -77.0% | 0.23% | -70.5% |
| BITI | New | BIOTIE THERAPIES | $1,784,000 | – | 124,314 | +100.0% | 0.23% | – |
| OSTK | Sell | OVERSTOCK.COM, INC. | $1,773,000 | -35.9% | 144,421 | -10.4% | 0.22% | -38.7% |
| KONAQ | New | KONA GRILL, INC. | $1,692,000 | – | 106,652 | +100.0% | 0.21% | – |
| MU | Sell | MICRON TECHNOLOGY, INC. | $1,594,000 | -66.0% | 112,605 | -64.0% | 0.20% | -67.5% |
| HAR | Buy | HARMAN INTERNATIONAL INDUSTRIES, INC. | $1,563,000 | +96.6% | 16,586 | +100.3% | 0.20% | +88.6% |
| OCUL | Sell | OCULAR THERAPEUTIX, INC. | $1,418,000 | -79.5% | 151,292 | -69.3% | 0.18% | -80.4% |
| FB | FACEBOOK, INC. | $1,337,000 | +16.5% | 12,775 | 0.0% | 0.17% | +11.2% | |
| IPHI | Sell | INPHI CORPORATION | $1,066,000 | -75.4% | 39,445 | -78.1% | 0.14% | -76.5% |
| PRTY | New | PARTY CITY HOLDCO, INC. | $878,000 | – | 67,971 | +100.0% | 0.11% | – |
| OXM | Sell | OXFORD INDUSTRIES, INC. | $733,000 | -83.4% | 11,480 | -80.8% | 0.09% | -84.1% |
| ECOL | Sell | US ECOLOGY, INC. | $393,000 | -89.6% | 10,784 | -87.5% | 0.05% | -90.0% |
| LOCO | Sell | EL POLLO LOCO HOLDINGS, INC. | $356,000 | -78.5% | 28,226 | -81.6% | 0.04% | -79.5% |
| GDDY | Sell | GODADDY.COM, INC. | $214,000 | -94.9% | 6,663 | -96.0% | 0.03% | -95.1% |
| TTSH | Sell | TILE SHOP, INC. | $211,000 | -90.6% | 12,842 | -93.2% | 0.03% | -91.0% |
| MWW | Sell | MONSTER WORLDWIDE, INC. | $208,000 | -96.7% | 36,307 | -96.3% | 0.03% | -96.9% |
| COT | Sell | COTT CORPORATION | $136,000 | -65.6% | 12,331 | -66.2% | 0.02% | -67.3% |
| GM | Exit | GENERAL MOTORS CO. | $0 | – | -21,422 | -100.0% | -0.08% | – |
| EXP | Exit | EAGLE MATERIALS, INC. | $0 | – | -10,600 | -100.0% | -0.10% | – |
| PGEM | Exit | PLY GEM HOLDINGS, INC. | $0 | – | -67,556 | -100.0% | -0.10% | – |
| MERC | Exit | MERCER INTERNATIONAL, INC. | $0 | – | -82,446 | -100.0% | -0.11% | – |
| PSMT | Exit | PRICESMART, INC. | $0 | – | -11,844 | -100.0% | -0.12% | – |
| BLDR | Exit | BUILDERS FIRSTSOURCE, INC. | $0 | – | -78,478 | -100.0% | -0.13% | – |
| TGNA | Exit | TEGNA, INC. | $0 | – | -53,883 | -100.0% | -0.16% | – |
| ACAD | Exit | ACADIA PHARMACEUTICALS, INC. | $0 | – | -44,850 | -100.0% | -0.20% | – |
| NUS | Exit | NU SKIN ENTERPRISES, INC. | $0 | – | -42,618 | -100.0% | -0.23% | – |
| DWCH | Exit | DATAWATCH CORPORATION | $0 | – | -325,686 | -100.0% | -0.25% | – |
| URI | Exit | UNITED RENTALS, INC. | $0 | – | -33,232 | -100.0% | -0.26% | – |
| DECK | Exit | DECKERS OUTDOORS CORPORATION | $0 | – | -39,148 | -100.0% | -0.30% | – |
| NDLS | Exit | NOODLES AND CO. | $0 | – | -175,559 | -100.0% | -0.33% | – |
| DXYN | Exit | DIXIE GROUP, INC. | $0 | – | -309,737 | -100.0% | -0.34% | – |
| USG | Exit | USG CORPORATION | $0 | – | -122,758 | -100.0% | -0.43% | – |
| MACK | Exit | MERRIMACK PHARMACEUTICALS, INC. | $0 | – | -444,550 | -100.0% | -0.50% | – |
| HES | Exit | HESS CORPORATION | $0 | – | -82,655 | -100.0% | -0.55% | – |
| WCIC | Exit | WCI COMMUNITIES, INC. | $0 | – | -183,784 | -100.0% | -0.55% | – |
| GLUU | Exit | GLU MOBILE, INC. | $0 | – | -1,029,224 | -100.0% | -0.60% | – |
| KMX | Exit | CARMAX, INC. | $0 | – | -92,342 | -100.0% | -0.73% | – |
| HDS | Exit | HD SUPPLY HOLDINGS, INC. | $0 | – | -196,384 | -100.0% | -0.74% | – |
| NEWM | Exit | NEW MEDIA INVESTMENT GROUP, INC. | $0 | – | -366,083 | -100.0% | -0.75% | – |
| HHC | Exit | HOWARD HUGHES CORPORATION | $0 | – | -53,117 | -100.0% | -0.81% | – |
| AVGTF | Exit | AVG TECHNOLOGIES N.V. | $0 | – | -383,705 | -100.0% | -1.11% | – |
| AWAY | Exit | HOMEAWAY, INC. | $0 | – | -326,087 | -100.0% | -1.15% | – |
| GOOG | Exit | GOOGLE, INC. | $0 | – | -19,895 | -100.0% | -1.60% | – |
| R | Exit | RYDER SYSTEM, INC. | $0 | – | -164,119 | -100.0% | -1.61% | – |
Original filings
The following EDGAR filing(s) were analyzed to create this report:
- View 13F-HR filed 2016-02-12
About Portolan Capital Management
Portolan Capital Management is a New York-based investment management firm that specializes in long/short equity strategies. The firm was founded in 2002 by George McCabe, who serves as the Chief Investment Officer. McCabe has over 30 years of experience in the investment industry, having previously worked at firms such as Goldman Sachs and J.P. Morgan.
Portolan's investment philosophy is based on fundamental research and a disciplined approach to risk management. The firm's investment team conducts extensive research on companies and industries to identify undervalued securities with strong growth potential. They also use a variety of quantitative tools to manage risk and optimize portfolio construction.
In addition to McCabe, Portolan's leadership team includes Chief Operating Officer Michael McCabe and Chief Financial Officer John McCabe. The firm has a team of experienced investment professionals who work together to manage the firm's portfolios.
Portolan's investment strategies have delivered strong performance over the years, with a focus on generating alpha through stock selection and risk management. The firm's long/short equity strategy has consistently outperformed its benchmark, with a track record of strong risk-adjusted returns.
Overall, Portolan Capital Management is a well-respected investment management firm with a strong track record of delivering value to its clients. With a focus on fundamental research and disciplined risk management, the firm is well-positioned to continue delivering strong performance in the years ahead.
It's important to note that this information is for educational purposes only and has not been fact-checked. As with any investment, it's important to do your own research and consult with a financial advisor before making any investment decisions.
Top long-term holdings
| Name | Quarters owned | Latest quarter owned | Max weighting |
|---|---|---|---|
| CASELLA WASTE SYSTEMS, INC. CLASS A | 42 | Q3 2023 | 5.3% |
| META PLATFORMS, INC. | 41 | Q3 2023 | 2.0% |
| ABIOMED INC CMN | 38 | Q3 2022 | 2.9% |
| ANIKA THERAPEUTICS INC CMN | 36 | Q2 2023 | 2.8% |
| BIO-RAD LABORATORIES, INC. | 34 | Q3 2023 | 3.5% |
| EURONET WORLDWIDE INC CMN | 32 | Q4 2022 | 3.9% |
| ALPHABET, INC. | 32 | Q3 2023 | 3.3% |
| SKECHERS USA, INC. | 31 | Q3 2023 | 2.9% |
| QUALYS INC CMN | 30 | Q4 2022 | 2.6% |
| ELECTRONIC ARTS, INC. | 29 | Q4 2022 | 2.2% |
View Portolan Capital Management's complete holdings history.
Latest significant ownerships (13-D/G)
| Filed | Shares | Percentage | |
|---|---|---|---|
| ALTA EQUIPMENT GROUP INC. | February 13, 2023 | 572,246 | 1.8% |
| Charah Solutions, Inc. | February 13, 2023 | 166,819 | 5.0% |
| FULL HOUSE RESORTS INC | February 13, 2023 | 407,452 | 1.2% |
| HARVARD BIOSCIENCE INC | February 13, 2023 | 1,054,300 | 2.5% |
| LANTRONIX INC | February 13, 2023 | 691,118 | 1.9% |
| RICHARDSON ELECTRONICS, LTD. | February 13, 2023 | 484,632 | 4.0% |
| Charah Solutions, Inc. | November 22, 2022 | 1,782,052 | 5.3% |
| APPLIED GENETIC TECHNOLOGIES CORP | February 15, 2022 | 2,218,188 | 5.2% |
| AEMETIS, INC | February 11, 2022 | 106,090 | 0.3% |
| BlueLinx Holdings Inc. | February 11, 2022 | 451,793 | 4.6% |
View Portolan Capital Management's complete significant-ownership history.
Latest filings
| Type | Filed |
|---|---|
| SC 13G | 2024-03-14 |
| 13F-HR | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G/A | 2024-02-14 |
| SC 13G | 2023-12-18 |
| 13F-HR | 2023-11-14 |
View Portolan Capital Management's complete filings history.
All filings
- Holdings (13F-HR)
- Significant ownership (13-D/G)
- Insider transactions (4, 5, 6)
- Events (8-K)
- Shareholder votes (proxy)
View complete filings history.