Essex Investment Management Co LLC Top Holdings and 13F Report (2026) About Essex Investment Management Co LLCInvestment ActivityEssex Investment Management Co LLC has $763.37 million in total holdings as of June 30, 2026.Essex Investment Management Co LLC owns shares of 306 different stocks, but just 89 companies or ETFs make up 80% of its holdings.Approximately 12.77% of the portfolio was purchased this quarter.About 16.36% of the portfolio was sold this quarter.This quarter, Essex Investment Management Co LLC has purchased 305 new stocks and bought additional shares in 30 stocks.Essex Investment Management Co LLC sold shares of 155 stocks and completely divested from 26 stocks this quarter.Largest Holdings Tower Semiconductor $27,508,728Lincoln Educational Services $16,984,263KINIKSA PHARMACEUTICALS INTL P $15,436,379OUSTER INC $14,131,271Ligand Pharmaceuticals $13,771,093 Largest New Holdings this Quarter 950755108 - Werner Enterprises $10,101,166 Holding98423F109 - Xometry $5,397,302 Holding09624H208 - BlueLinx $5,358,375 Holding458665304 - Interface $4,422,692 Holding74017N105 - Precigen $4,025,876 Holding Largest Purchases this Quarter Werner Enterprises 231,625 shares (about $10.10M)Xometry 55,919 shares (about $5.40M)BlueLinx 86,593 shares (about $5.36M)Interface 123,401 shares (about $4.42M)Precigen 706,294 shares (about $4.03M) Largest Sales this Quarter Sterling Infrastructure 15,902 shares (about $13.35M)Ligand Pharmaceuticals 14,893 shares (about $4.71M)Cohu 60,715 shares (about $4.49M)Graham 34,889 shares (about $4.32M)Marvell Technology 10,292 shares (about $3.07M) Sector Allocation Over TimeMap of 500 Largest Holdings ofEssex Investment Management Co LLC Selling Neutral Buying Latest 13F Holdings and Changes Since Previous Quarterly FilingIssuer NameHoldings ValueApproximate Purchase/SaleChange in SharesShares Held% of PortfolioSectorTSEMTower Semiconductor$27,508,728$2,708,050 â–¼-9.0%105,5433.6%TechnologyLINCLincoln Educational Services$16,984,263$745,406 â–¼-4.2%340,3662.2%Consumer DiscretionaryKINIKSA PHARMACEUTICALS INTL P$15,436,379$504,949 â–¼-3.2%241,3822.0%COMOUSTER INC$14,131,271$2,591,016 â–²22.5%226,0281.9%COMLGNDLigand Pharmaceuticals$13,771,093$4,707,528 â–¼-25.5%43,5671.8%HealthcareCECOCECO Environmental$13,648,748$619,754 â–¼-4.3%150,4161.8%IndustrialsSTRLSterling Infrastructure$13,559,861$13,347,503 â–¼-49.6%16,1551.8%IndustrialsAIPArteris$13,491,742$614,858 â–¼-4.4%277,6651.8%TechnologyMIRMMirum Pharmaceuticals$12,370,670$312,460 â–¼-2.5%105,6691.6%HealthcareAGXArgan$12,351,173$503,885 â–¼-3.9%15,4671.6%IndustrialsGHMGraham$11,562,605$4,318,909 â–¼-27.2%93,4051.5%IndustrialsDRSLeonardo DRS$10,676,674$479,568 â–¼-4.3%250,2151.4%IndustrialsADPTAdaptive Biotechnologies$10,140,766$442,728 â–¼-4.2%472,7631.3%HealthcareWERNWerner Enterprises$10,101,166$10,101,166 â–²New Holding231,6251.3%IndustrialsHCIHCI Group$9,859,565$240,794 â–¼-2.4%56,2601.3%FinanceGE VERNOVA INC$9,731,365$42,295 â–¼-0.4%8,2831.3%COMCOHUCohu$9,694,775$4,487,446 â–¼-31.6%131,1701.3%TechnologyAAPLApple$9,383,077$44,272 â–¼-0.5%32,4271.2%TechnologyAMSCAmerican Superconductor$9,212,439$233,494 â–¼-2.5%221,9331.2%IndustrialsBWAYBrainsway$9,191,319$402,438 â–¼-4.2%592,6061.2%HealthcareTTITetra Technologies$8,395,609$374,932 â–¼-4.3%741,0071.1%EnergyLYTSLSI Industries$7,862,896$577,796 â–²7.9%295,8201.0%IndustrialsMRVLMarvell Technology$7,718,628$3,065,884 â–¼-28.4%25,9111.0%TechnologyKTOSKratos Defense & Security Solutions$7,657,299$262,662 â–¼-3.3%153,5761.0%IndustrialsTVTXTravere Therapeutics$7,604,927$1,581,533 â–¼-17.2%133,8661.0%HealthcareGSThe Goldman Sachs Group$7,598,423$43,489 â–¼-0.6%7,5131.0%FinancePATKPatrick Industries$7,448,149$3,297,799 â–²79.5%82,9601.0%Consumer DiscretionaryORNOrion Group$7,444,582$322,423 â–¼-4.2%442,6031.0%IndustrialsASMLASML$7,038,639$35,810 â–¼-0.5%3,5380.9%TechnologyAMBAAmbarella$6,863,743$205,062 â–¼-2.9%79,9970.9%TechnologyNVCRNovoCure$6,660,667$192,738 â–¼-2.8%439,6480.9%HealthcareAMZNAmazon.com$6,449,957$34,798 â–¼-0.5%27,0620.8%Consumer DiscretionaryAVPTAvePoint$6,406,975$818,991 â–²14.7%571,5410.8%TechnologyWMSAdvanced Drainage Systems$6,343,224$24,486 â–¼-0.4%40,4130.8%IndustrialsSMTCSemtech$6,186,878$2,009,853 â–¼-24.5%38,2260.8%TechnologyOIIOceaneering International$6,137,281$280,034 â–¼-4.4%151,4630.8%EnergyEVERUS CONSTR GROUP$6,036,763$285,600 â–¼-4.5%36,3770.8%COMAEMAgnico Eagle Mines$5,966,610$28,079 â–¼-0.5%38,4620.8%MaterialsLQDALiquidia$5,959,259$273,314 â–¼-4.4%74,7430.8%HealthcareWLDNWilldan Group$5,923,799$269,098 â–¼-4.3%74,8900.8%IndustrialsFEIMFrequency Electronics$5,908,003$264,272 â–¼-4.3%89,0430.8%TechnologyMSFTMicrosoft$5,861,636$28,723 â–¼-0.5%15,7140.8%TechnologyMAMAMama's Creations$5,835,843$262,734 â–¼-4.3%326,9380.8%Consumer StaplesXERSXeris Biopharma$5,667,615$254,715 â–¼-4.3%715,6080.7%HealthcarePKEPark Aerospace$5,482,180$237,737 â–¼-4.2%143,6630.7%IndustrialsBIODESIX INC$5,455,183$2,476,644 â–²83.1%241,9150.7%COMXMTRXometry$5,397,302$5,397,302 â–²New Holding55,9190.7%IndustrialsBXCBlueLinx$5,358,375$5,358,375 â–²New Holding86,5930.7%IndustrialsMITKMitek Systems$5,312,569$235,300 â–¼-4.2%263,9130.7%TechnologyCXDOCrexendo$5,310,229$239,877 â–¼-4.3%710,8740.7%TechnologyMIRMirion Technologies$5,290,426$251,917 â–¼-4.5%295,0600.7%TechnologyRDVTRed Violet$5,260,405$1,377,180 â–²35.5%82,5550.7%IndustrialsJAZZJazz Pharmaceuticals$5,220,615$27,230 â–¼-0.5%21,6650.7%HealthcareDIODDiodes$5,114,350$233,873 â–¼-4.4%46,7320.7%TechnologyAPYXApyx Medical$5,103,469$1,056,192 â–²26.1%1,136,6300.7%HealthcareBWXTBWX Technologies$4,950,144$24,137 â–¼-0.5%25,4310.6%IndustrialsOCULOcular Therapeutix$4,734,752$878,261 â–²22.8%482,1540.6%HealthcareSFMSprouts Farmers Market$4,666,786$3,786,900 â–²430.4%55,1760.6%Consumer StaplesLPTHLightPath Technologies$4,660,600$1,120,318 â–²31.6%285,0520.6%TechnologyINSMInsmed$4,583,700$2,098,815 â–¼-31.4%42,9910.6%HealthcareEXZEO GROUP INC$4,533,036$327,396 â–¼-6.7%268,7040.6%COMMGMistras Group$4,492,009$199,857 â–¼-4.3%257,1270.6%IndustrialsSIBNSiBone$4,429,313$961,509 â–²27.7%271,4040.6%HealthcareCONCENTRA GROUP HOLDINGS PAREN$4,427,871$23,473 â–¼-0.5%148,8360.6%COMTILEInterface$4,422,692$4,422,692 â–²New Holding123,4010.6%IndustrialsGFFGriffon$4,382,706$208,617 â–¼-4.5%44,9370.6%IndustrialsJOUTJohnson Outdoors$4,335,863$1,441,604 â–²49.8%94,1760.6%Consumer DiscretionaryDAKTDaktronics$4,233,332$671,730 â–²18.9%216,4280.6%TechnologyCMCOColumbus McKinnon$4,210,921$1,007,794 â–²31.5%278,3160.6%IndustrialsBMIBadger Meter$4,160,724$2,801,860 â–²206.2%28,0410.5%TechnologyMASS908 Devices$4,091,123$182,500 â–¼-4.3%470,2440.5%TechnologyLQDTLiquidity Services$4,041,174$183,942 â–¼-4.4%103,3020.5%IndustrialsPGENPrecigen$4,025,876$4,025,876 â–²New Holding706,2940.5%HealthcareAXSMAxsome Therapeutics$3,976,044$20,561 â–¼-0.5%16,2440.5%HealthcareAMPXAmprius Technologies$3,944,487$2,229,326 â–¼-36.1%284,5950.5%IndustrialsGMEDGlobus Medical$3,924,980$25,836 â–¼-0.7%49,6770.5%HealthcareLTRXLantronix$3,892,972$1,879,136 â–²93.3%662,0700.5%TechnologyLEGACY ED INC$3,879,553$2,192,711 â–²130.0%329,8940.5%COMRSKDRiskified$3,876,188$171,093 â–¼-4.2%769,0850.5%TechnologyAMERANT BANCORP INC$3,834,023$167,973 â–¼-4.2%150,2360.5%COMSOPHSOPHiA GENETICS$3,827,980$169,528 â–¼-4.2%663,4280.5%HealthcareNUVBNuvation Bio$3,811,513$3,811,513 â–²New Holding671,0410.5%HealthcareTHRMGentherm$3,682,857$176,280 â–¼-4.6%107,9700.5%Consumer DiscretionaryBLACKSKY TECHNOLOGY INC$3,637,446$162,578 â–¼-4.3%130,2810.5%COMARQTArcutis Biotherapeutics$3,605,250$168,699 â–¼-4.5%137,5000.5%HealthcareDLTRDollar Tree$3,562,582$19,231 â–¼-0.5%29,4550.5%Consumer StaplesBGC GROUP INC$3,436,664$163,525 â–¼-4.5%321,4840.5%COMOCTAVE SPECIALTY GROUP INC$3,365,163$755,577 â–²29.0%539,2890.4%COMFETForum Energy Technologies$3,345,871$3,345,871 â–²New Holding66,6110.4%EnergyIIIInformation Services Group$3,322,298$1,746,524 â–²110.8%808,3450.4%TechnologyNPCENeuroPace$3,316,291$143,566 â–¼-4.1%208,7030.4%HealthcareRAILFreightcar America$3,288,828$142,993 â–¼-4.2%337,6620.4%IndustrialsNOVTNovanta$3,214,137$144,718 â–¼-4.3%19,8110.4%TechnologyCRWDCrowdStrike$3,181,531$3,181,531 â–²New Holding4,1690.4%TechnologyCODACoda Octopus Group$3,148,656$1,295,873 â–²69.9%322,2780.4%IndustrialsBKRBaker Hughes$3,017,813$17,039 â–¼-0.6%54,3750.4%EnergyIBEXIBEX$2,980,998$1,226,887 â–²69.9%98,1560.4%IndustrialsDCBODocebo$2,955,201$130,169 â–¼-4.2%165,0950.4%TechnologyEVREvercore$2,927,165$124,967 â–¼-4.1%8,5730.4%FinanceBRCCBRC$2,913,739$2,913,739 â–²New Holding2,624,9900.4%Consumer StaplesShowing largest 100 holdings. 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