Essex Investment Management

Essex Investment Management as of March 31, 2026

Portfolio Holdings for Essex Investment Management

Essex Investment Management holds 305 positions in its portfolio as reported in the March 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tower Semiconductor (TSEM) 3.2 $20M 116k 175.48
Lincoln Educational Services Corporation (LINC) 2.3 $15M 355k 40.68
Sterling Construction Company (STRL) 2.1 $13M 32k 407.27
Kiniksa Pharmaceuticals Intl P Ord Shs Cl A (KNSA) 1.9 $12M 249k 48.15
Ligand Pharmaceuticals In (LGND) 1.8 $12M 59k 199.65
D R S Technologies (DRS) 1.8 $12M 262k 44.52
Kratos Defense & Security Solutions (KTOS) 1.8 $11M 159k 70.51
Globalstar (GSAT) 1.7 $11M 166k 66.42
Insmed (INSM) 1.6 $10M 63k 163.52
Graham Corporation (GHM) 1.6 $10M 128k 78.92
Mirum Pharmaceuticals (MIRM) 1.6 $10M 108k 92.38
CECO Environmental (CECO) 1.5 $9.4M 157k 59.58
Hci (HCI) 1.4 $8.9M 58k 154.61
Argan (AGX) 1.4 $8.8M 16k 544.65
Apple (AAPL) 1.3 $8.3M 33k 253.79
Brainsway Adr (BWAY) 1.3 $8.2M 619k 13.29
Agnico (AEM) 1.2 $7.8M 39k 202.98
American Superconductor (AMSC) 1.2 $7.7M 228k 33.85
Amprius Technologies (AMPX) 1.2 $7.5M 445k 16.86
Ge Vernova (GEV) 1.1 $7.3M 8.3k 872.90
Primoris Services (PRIM) 1.1 $6.9M 48k 143.04
Adaptive Biotechnologies Cor (ADPT) 1.1 $6.8M 493k 13.88
TETRA Technologies (TTI) 1.0 $6.6M 774k 8.52
Goldman Sachs (GS) 1.0 $6.4M 7.6k 845.99
Willdan (WLDN) 0.9 $6.0M 78k 76.56
Cohu (COHU) 0.9 $5.9M 192k 30.62
Microsoft Corporation (MSFT) 0.9 $5.8M 16k 370.17
Mirion Technologies Inc - US (MIR) 0.9 $5.7M 309k 18.59
Amazon (AMZN) 0.9 $5.7M 27k 208.27
Oceaneering International (OII) 0.9 $5.6M 158k 35.47
Advanced Drain Sys Inc Del (WMS) 0.9 $5.6M 41k 137.13
Bioventus Inc - A (BVS) 0.9 $5.5M 603k 9.13
Mamamancini's Holdings (MAMA) 0.8 $5.2M 342k 15.34
Bwx Technologies (BWXT) 0.8 $5.2M 26k 204.49
Patrick Industries (PATK) 0.8 $5.1M 46k 111.07
LSI Industries (LYTS) 0.8 $5.1M 274k 18.60
Orion Marine (ORN) 0.8 $5.0M 462k 10.90
Novocure Ltd ord (NVCR) 0.8 $4.9M 452k 10.90
Travere Therapeutics (TVTX) 0.8 $4.8M 162k 29.71
Arteris (AIP) 0.8 $4.8M 290k 16.44
Apex Technology Acqui-cl A (AVPT) 0.8 $4.7M 499k 9.51
Asml Hldg Nv Adr (ASML) 0.7 $4.7M 3.6k 1320.83
Syndax Pharmaceuticals (SNDX) 0.7 $4.6M 199k 23.36
(CXDO) 0.7 $4.6M 743k 6.17
Everus Constr Group (ECG) 0.7 $4.5M 38k 118.06
Xeris Pharmaceuticals (XERS) 0.7 $4.3M 748k 5.80
Globus Med Inc cl a (GMED) 0.7 $4.3M 50k 86.16
Ambarella (AMBA) 0.7 $4.2M 82k 51.48
Exzeo Group (XZO) 0.7 $4.2M 288k 14.67
Frequency Electronics (FEIM) 0.7 $4.1M 93k 44.26
Jazz Pharmaceuticals (JAZZ) 0.7 $4.1M 22k 189.05
Park Aerospace Corp. Cmn Pke (PKE) 0.6 $4.1M 150k 27.38
Mistras (MG) 0.6 $4.0M 269k 14.78
Semtech Corporation (SMTC) 0.6 $3.9M 51k 76.89
Intellicheck Mobilisa (IDN) 0.6 $3.8M 538k 6.99
Mitek Systems (MITK) 0.6 $3.7M 276k 13.50
Marvell Technology (MRVL) 0.6 $3.6M 36k 99.05
Daktronics (DAKT) 0.6 $3.6M 182k 19.55
Agios Pharmaceuticals (AGIO) 0.6 $3.5M 103k 33.83
Amerant Bancorp Cl A Ord (AMTB) 0.5 $3.5M 157k 22.04
Sophia Genetics Sa (SOPH) 0.5 $3.4M 693k 4.95
Blacksky Technology (BKSY) 0.5 $3.4M 136k 25.16
Griffon Corporation (GFF) 0.5 $3.4M 47k 72.68
Arcutis Biotherapeutics (ARQT) 0.5 $3.4M 144k 23.56
Ouster (OUST) 0.5 $3.4M 185k 18.37
Everquote Cl A Ord (EVER) 0.5 $3.3M 217k 15.42
Baker Hughes A Ge Company (BKR) 0.5 $3.3M 55k 61.05
Diodes Incorporated (DIOD) 0.5 $3.3M 49k 68.26
salesforce (CRM) 0.5 $3.3M 18k 186.67
Ocular Therapeutix (OCUL) 0.5 $3.3M 393k 8.47
Apyx Medical Corporation (APYX) 0.5 $3.3M 901k 3.69
Liquidity Services (LQDT) 0.5 $3.3M 108k 30.57
Bgc Group Inc Cl A (BGC) 0.5 $3.3M 337k 9.78
Dollar Tree (DLTR) 0.5 $3.2M 30k 109.51
Concentra Group Holdings Par (CON) 0.5 $3.2M 150k 21.45
Pegasystems (PEGA) 0.5 $3.2M 74k 42.56
Guidewire Software (GWRE) 0.5 $3.2M 21k 149.56
Riskified (RSKD) 0.5 $3.1M 803k 3.92
Gentherm (THRM) 0.5 $3.1M 113k 27.78
Columbus McKinnon (CMCO) 0.5 $3.1M 212k 14.53
Docebo (DCBO) 0.5 $3.0M 172k 17.47
908 Devices (MASS) 0.5 $3.0M 491k 6.12
Varex Imaging (VREX) 0.5 $3.0M 280k 10.61
Liquidia Technologies (LQDA) 0.5 $3.0M 78k 37.74
Stereotaxis (STXS) 0.5 $2.9M 1.6M 1.84
Johnson Outdoors (JOUT) 0.5 $2.9M 63k 46.51
Neuropace (NPCE) 0.5 $2.9M 218k 13.15
FreightCar America (RAIL) 0.4 $2.8M 352k 7.97
InfuSystem Holdings (INFU) 0.4 $2.8M 299k 9.23
Axsome Therapeutics (AXSM) 0.4 $2.8M 16k 169.02
Arlo Technologies (ARLO) 0.4 $2.7M 193k 14.23
Identiv (INVE) 0.4 $2.7M 737k 3.70
Si-bone (SIBN) 0.4 $2.7M 213k 12.63
Trimble Navigation (TRMB) 0.4 $2.7M 41k 65.23
Evercore Partners (EVR) 0.4 $2.7M 8.9k 298.51
Expro Group Holdings Nv (XPRO) 0.4 $2.6M 150k 17.41
Carecloud (CCLD) 0.4 $2.5M 698k 3.65
Matador Resources (MTDR) 0.4 $2.5M 40k 63.18
Novanta (NOVT) 0.4 $2.4M 21k 118.11
Montrose Environmental Group (MEG) 0.4 $2.4M 112k 21.89
Paymentus Holdings (PAY) 0.4 $2.4M 95k 25.40
Extreme Networks (EXTR) 0.4 $2.4M 158k 15.08
Cheniere Energy (LNG) 0.4 $2.3M 8.1k 283.76
Walt Disney Company (DIS) 0.3 $2.2M 23k 96.38
LightPath Technologies (LPTH) 0.3 $2.2M 217k 10.03
Workiva Inc equity us cm (WK) 0.3 $2.2M 36k 59.63
Riverview Ban (RVSB) 0.3 $2.1M 390k 5.50
Coda Octopus Group (CODA) 0.3 $2.1M 190k 11.30
Red Violet (RDVT) 0.3 $2.1M 61k 34.60
Cs Disco (LAW) 0.3 $2.1M 539k 3.82
Rapid Micro Biosystems Inc-a (RPID) 0.3 $2.0M 884k 2.27
Zeta Global Holdings Corp (ZETA) 0.3 $2.0M 123k 15.92
Ambac Finl (OSG) 0.3 $1.9M 418k 4.65
Gencor Industries (GENC) 0.3 $1.9M 130k 15.00
Biodesix (BDSX) 0.3 $1.9M 132k 14.50
Curiositystream (CURI) 0.3 $1.8M 621k 2.96
Legacy Ed (LGCY) 0.3 $1.8M 143k 12.52
Lantronix (LTRX) 0.3 $1.8M 343k 5.24
Eyepoint Pharmaceuticals (EYPT) 0.3 $1.6M 127k 12.89
Freightos LTD F (CRGO) 0.3 $1.6M 998k 1.64
Zscaler Incorporated (ZS) 0.3 $1.6M 11k 140.29
Corteva (CTVA) 0.2 $1.6M 19k 83.71
Tempus Ai (TEM) 0.2 $1.6M 34k 45.22
Ibex (IBEX) 0.2 $1.5M 58k 26.82
Upwork (UPWK) 0.2 $1.5M 138k 10.96
Allot Communications (ALLT) 0.2 $1.5M 226k 6.66
Cognex Corporation (CGNX) 0.2 $1.5M 30k 48.99
Information Services (III) 0.2 $1.5M 383k 3.84
Badger Meter (BMI) 0.2 $1.4M 9.2k 152.35
4068594 Enphase Energy (ENPH) 0.2 $1.3M 35k 37.81
Energy Recovery (ERII) 0.2 $1.3M 132k 10.07
Blend Labs (BLND) 0.2 $1.3M 762k 1.70
Xylem (XYL) 0.2 $1.3M 11k 119.50
Nextracker (NXT) 0.2 $1.2M 10k 120.55
ON Semiconductor (ON) 0.2 $1.2M 19k 61.92
Carrier Global Corporation (CARR) 0.2 $1.2M 21k 56.31
Valmont Industries (VMI) 0.2 $1.1M 2.8k 399.57
M/a (MTSI) 0.2 $1.1M 4.9k 222.07
Samsara (IOT) 0.2 $1.1M 33k 31.69
Paychex (PAYX) 0.2 $1.0M 11k 92.12
Intuit (INTU) 0.2 $958k 2.2k 432.38
Barrick Mining Corp (B) 0.1 $937k 23k 40.79
Nextera Energy (NEE) 0.1 $922k 9.9k 92.88
Quanta Services (PWR) 0.1 $865k 1.6k 549.02
Rivian Automotive Inc Class A (RIVN) 0.1 $851k 57k 15.05
Procter & Gamble Company (PG) 0.1 $847k 5.9k 144.44
Arthur J. Gallagher & Co. (AJG) 0.1 $811k 3.7k 216.58
Veralto Corp (VLTO) 0.1 $809k 9.2k 88.42
Coca-Cola Company (KO) 0.1 $803k 11k 76.05
Sprouts Fmrs Mkt (SFM) 0.1 $802k 10k 77.13
JPMorgan Chase & Co. (JPM) 0.1 $800k 2.7k 294.16
Martin Marietta Materials (MLM) 0.1 $785k 1.3k 588.68
Valero Energy Corporation (VLO) 0.1 $775k 3.1k 247.08
Aeva Technologies (AEVA) 0.1 $767k 58k 13.16
Air Products & Chemicals (APD) 0.1 $746k 2.6k 290.49
Franco-Nevada Corporation (FNV) 0.1 $740k 3.0k 247.05
Lindsay Corporation (LNN) 0.1 $706k 5.9k 119.07
Ishares Tr Etf (IWO) 0.1 $693k 2.2k 313.81
Yaskawa Elec Corp 0.1 $672k 27k 25.27
Wheaton Precious Metals Corp (WPM) 0.1 $643k 4.9k 131.01
Medtronic (MDT) 0.1 $642k 7.4k 86.65
Shoals Technologies Group Cl A Ord (SHLS) 0.1 $616k 94k 6.58
Marsh & McLennan Companies (MRSH) 0.1 $612k 3.5k 173.45
Colgate-Palmolive Company (CL) 0.1 $591k 6.9k 85.23
Johnson & Johnson (JNJ) 0.1 $583k 2.4k 244.44
Emcor (EME) 0.1 $542k 734.00 738.31
Solv Energy Inc Com Shs Cl A (MWH) 0.1 $535k 18k 30.03
Eton Pharmaceuticals (ETON) 0.1 $498k 20k 24.68
Ambiq Micro (AMBQ) 0.1 $488k 19k 25.41
Alfen Nv 0.1 $484k 46k 10.51
Pepsi (PEP) 0.1 $482k 3.1k 155.29
Acm Research (ACMR) 0.1 $463k 12k 39.35
Camtek (CAMT) 0.1 $446k 2.9k 151.61
Amtech Systems (ASYS) 0.1 $442k 38k 11.68
Equinor Asa Adr (EQNR) 0.1 $441k 11k 42.20
Newmont Mining Corporation (NEM) 0.1 $439k 4.1k 108.25
Snap-on Incorporated (SNA) 0.1 $409k 1.1k 363.22
Grand Canyon Education (LOPE) 0.1 $391k 2.3k 170.03
Vanguard Index Fds Etf (VTI) 0.1 $387k 1.2k 320.81
American Express Company (AXP) 0.1 $369k 1.2k 302.48
Fluence Energy (FLNC) 0.1 $352k 26k 13.76
Energy Services of America (ESOA) 0.1 $343k 26k 13.13
Strattec Security (STRT) 0.1 $330k 4.2k 78.34
Verizon Communications (VZ) 0.1 $329k 6.5k 50.20
Axcelis Technologies (ACLS) 0.0 $312k 3.4k 93.08
Optex Sys Hldgs (OPXS) 0.0 $306k 23k 13.22
Sitime Corp (SITM) 0.0 $294k 850.00 345.35
General Electric (GE) 0.0 $293k 1.0k 283.77
Novartis Adr (NVS) 0.0 $286k 1.9k 152.75
Perma-pipe International (PPIH) 0.0 $284k 9.5k 29.81
Cps Technologies (CPSH) 0.0 $277k 74k 3.74
Duke Energy (DUK) 0.0 $276k 2.1k 130.94
Byd Adr (BYDDY) 0.0 $275k 20k 13.63
One Stop Systems (OSS) 0.0 $269k 36k 7.57
Archer Daniels Midland Company (ADM) 0.0 $267k 3.7k 72.69
Southern Company (SO) 0.0 $229k 2.4k 96.52
Tesla Motors (TSLA) 0.0 $213k 573.00 371.75
Exxon Mobil Corporation (XOM) 0.0 $211k 1.2k 169.66
Commercial Vehicle (CVGI) 0.0 $204k 60k 3.41
Neuroone Med Technologies Corp (NMTC) 0.0 $203k 262k 0.78
Broadwind Energy (BWEN) 0.0 $197k 95k 2.08
Data I/O Corporation (DAIO) 0.0 $189k 75k 2.53
Inspiremd (NSPR) 0.0 $186k 114k 1.63
RF Industries (RFIL) 0.0 $185k 18k 10.31
Trio-Tech International (TRT) 0.0 $182k 32k 5.78
Costco Wholesale Corporation (COST) 0.0 $179k 180.00 996.43
Lensar (LNSR) 0.0 $179k 30k 5.96
Richardson Electronics (RELL) 0.0 $176k 16k 10.95
Matson (MATX) 0.0 $173k 1.1k 163.94
Amplitech Group (AMPG) 0.0 $167k 88k 1.90
Geospace Technologies (GEOS) 0.0 $166k 14k 12.20
Abbott Laboratories (ABT) 0.0 $166k 1.6k 102.67
GSI Technology (GSIT) 0.0 $157k 31k 5.14
NOVA MEASURING Instruments L (NVMI) 0.0 $156k 359.00 434.28
Alpha Pro Tech (APT) 0.0 $153k 34k 4.44
Oracle Corporation (ORCL) 0.0 $147k 1.0k 147.11
TransAct Technologies Incorporated (TACT) 0.0 $143k 43k 3.29
Flexible Solutions International (FSI) 0.0 $142k 26k 5.40
Automatic Data Processing (ADP) 0.0 $138k 681.00 203.18
Merck & Co (MRK) 0.0 $136k 1.1k 120.29
Applied Industrial Technologies (AIT) 0.0 $134k 505.00 265.32
Genasys (GNSS) 0.0 $133k 73k 1.82
Harvard Bioscience 0.0 $132k 27k 4.87
Duos Technologies Group (DUOT) 0.0 $131k 19k 6.86
Monolithic Power Systems (MPWR) 0.0 $131k 120.00 1093.35
Netsol Technologies (NTWK) 0.0 $127k 38k 3.39
Liveone (LVO) 0.0 $125k 25k 5.10
Nephros (NEPH) 0.0 $116k 39k 2.98
Waste Management (WM) 0.0 $114k 494.00 229.79
Orion Energy Sys (OESX) 0.0 $110k 13k 8.74
Champions Oncology (CSBR) 0.0 $105k 18k 5.75
DTE Energy Company (DTE) 0.0 $104k 709.00 146.22
Nvent Electric Plc Voting equities (NVT) 0.0 $100k 842.00 118.28
Vince Holding Corp (VNCE) 0.0 $98k 41k 2.41
Fuel Tech (FTEK) 0.0 $94k 77k 1.22
Alphabet Inc Class C cs (GOOG) 0.0 $92k 320.00 286.86
Cincinnati Financial Corporation (CINF) 0.0 $86k 549.00 157.35
Royal Gold (RGLD) 0.0 $86k 338.00 254.49
Kinross Gold Corp (KGC) 0.0 $81k 2.7k 30.52
Wabtec Corporation (WAB) 0.0 $77k 306.00 249.91
Freeport-McMoRan Copper & Gold (FCX) 0.0 $76k 1.3k 58.78
Ocean Pwr Technologies (OPTT) 0.0 $72k 205k 0.35
Amkor Technology (AMKR) 0.0 $69k 1.5k 45.03
Bristol Myers Squibb (BMY) 0.0 $68k 1.1k 60.65
Rio Tinto Adr (RIO) 0.0 $67k 713.00 93.29
Philip Morris International (PM) 0.0 $67k 402.00 165.34
Glaukos (GKOS) 0.0 $66k 611.00 107.66
Morgan Stanley (MS) 0.0 $60k 363.00 164.57
Dana Holding Corporation (DAN) 0.0 $56k 1.7k 33.65
Clean Harbors (CLH) 0.0 $55k 193.00 286.73
Aware (AWRE) 0.0 $54k 43k 1.25
Amneal Pharmaceuticals (AMRX) 0.0 $53k 4.3k 12.43
Ishares Silver Tr Etf (SLV) 0.0 $53k 771.00 68.14
Micron Technology (MU) 0.0 $52k 153.00 337.84
Flowserve Corporation (FLS) 0.0 $51k 697.00 73.51
Wec Energy Group (WEC) 0.0 $50k 430.00 115.77
Excelerate Energy Inc-a (EE) 0.0 $49k 1.5k 33.42
Range Resources (RRC) 0.0 $49k 1.1k 45.18
Dt Midstream (DTM) 0.0 $48k 355.00 134.67
Virtra Inc Com Par (VTSI) 0.0 $48k 13k 3.71
PPL Corporation (PPL) 0.0 $47k 1.2k 38.20
Q2 Holdings (QTWO) 0.0 $46k 974.00 47.30
Gates Industrial Corpratin P ord (GTES) 0.0 $45k 2.0k 22.61
Senestech (SNES) 0.0 $43k 26k 1.64
Teradyne (TER) 0.0 $43k 145.00 296.46
Williams Companies (WMB) 0.0 $42k 573.00 72.78
Qnity Electronics (Q) 0.0 $41k 357.00 115.38
Atmus Filtration Technologies Ord (ATMU) 0.0 $41k 713.00 56.77
United Parcel Service (UPS) 0.0 $40k 404.00 98.38
Sempra Energy (SRE) 0.0 $38k 390.00 97.17
Acuity Brands (AYI) 0.0 $37k 131.00 280.22
Berkshire Hathaway (BRK.B) 0.0 $36k 76.00 479.20
Arcosa (ACA) 0.0 $35k 331.00 106.14
Avient Corp (AVNT) 0.0 $33k 915.00 36.30
Dupont De Nemours (DD) 0.0 $33k 715.00 45.80
Itron (ITRI) 0.0 $32k 362.00 89.63
Remitly Global (RELY) 0.0 $32k 2.0k 15.67
Five Below (FIVE) 0.0 $31k 137.00 228.48
BP Adr (BP) 0.0 $31k 662.00 47.00
Genpact (G) 0.0 $31k 823.00 37.25
Visa (V) 0.0 $28k 92.00 302.24
Infineon Technologies Adr (IFNNY) 0.0 $27k 607.00 45.21
Constellation Brands (STZ) 0.0 $27k 178.00 150.00
Schlumberger (SLB) 0.0 $26k 514.00 51.39
Helmerich & Payne (HP) 0.0 $26k 733.00 36.03
Rockwell Automation (ROK) 0.0 $25k 70.00 358.89
Alkami Technology (ALKT) 0.0 $25k 1.6k 15.67
Eaton (ETN) 0.0 $24k 66.00 357.67
Ecolab (ECL) 0.0 $22k 83.00 266.02
Amphenol Corporation (APH) 0.0 $21k 168.00 126.35
Iac Interactivecorp (IAC) 0.0 $20k 486.00 40.03
Regal-beloit Corporation (RRX) 0.0 $19k 100.00 187.26
Vaneck Etf Trust Etf (GDXJ) 0.0 $19k 156.00 120.04
Alphabet Inc Class A cs (GOOGL) 0.0 $18k 62.00 287.56
Tripadvisor (TRIP) 0.0 $16k 1.5k 10.66
FedEx Corporation (FDX) 0.0 $16k 45.00 356.18
Contemporary Amperex Technolog (CYATY) 0.0 $15k 722.00 20.03
Trane Technologies (TT) 0.0 $14k 33.00 416.73
Sanofi Sa Adr (SNY) 0.0 $9.6k 200.00 48.18
Union Pacific Corporation (UNP) 0.0 $8.5k 35.00 242.63
Angi Inc Cl A (ANGI) 0.0 $6.7k 984.00 6.85
Sandoz Group (SDZNY) 0.0 $3.7k 47.00 78.19
Industries N shs - a - (LYB) 0.0 $2.0k 25.00 80.56
Watts Water Technologies (WTS) 0.0 $1.5k 5.00 290.20
Organon & Co (OGN) 0.0 $66.000000 11.00 6.00