Essex Investment Management

Essex Investment Management as of Dec. 31, 2025

Portfolio Holdings for Essex Investment Management

Essex Investment Management holds 306 positions in its portfolio as reported in the December 2025 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tower Semiconductor (TSEM) 3.4 $23M 193k 117.42
Kratos Defense & Security Solutions (KTOS) 2.2 $14M 190k 75.91
Sterling Construction Company (STRL) 2.1 $14M 45k 306.23
Hci (HCI) 1.7 $11M 59k 191.69
Ligand Pharmaceuticals In (LGND) 1.7 $11M 60k 189.07
Insmed (INSM) 1.7 $11M 62k 174.04
Kiniksa Pharmaceuticals Intl P Ord Shs Cl A (KNSA) 1.6 $10M 251k 41.25
Globalstar (GSAT) 1.6 $10M 167k 61.04
Adaptive Biotechnologies Cor (ADPT) 1.5 $10M 624k 16.24
Apple (AAPL) 1.4 $9.5M 35k 271.86
Lincoln Educational Services Corporation (LINC) 1.4 $9.4M 389k 24.15
CECO Environmental (CECO) 1.4 $9.2M 155k 59.85
Graham Corporation (GHM) 1.4 $9.0M 141k 64.23
Mirum Pharmaceuticals (MIRM) 1.3 $8.8M 111k 78.99
D R S Technologies (DRS) 1.3 $8.8M 257k 34.09
Argan (AGX) 1.3 $8.7M 28k 313.32
Microsoft Corporation (MSFT) 1.3 $8.5M 18k 483.62
Willdan (WLDN) 1.2 $8.0M 77k 103.66
Goldman Sachs (GS) 1.2 $7.6M 8.7k 879.00
TETRA Technologies (TTI) 1.1 $7.1M 760k 9.37
Mirion Technologies Inc - US (MIR) 1.1 $7.1M 303k 23.42
Exzeo Group (XZO) 1.1 $7.1M 291k 24.25
Apex Technology Acqui-cl A (AVPT) 1.1 $7.1M 508k 13.89
Agnico (AEM) 1.0 $6.8M 40k 169.53
Amazon (AMZN) 1.0 $6.7M 29k 230.82
Beta Bionics (BBNX) 1.0 $6.6M 218k 30.47
Primoris Services (PRIM) 1.0 $6.3M 51k 124.14
Everquote Cl A Ord (EVER) 1.0 $6.2M 231k 27.00
Advanced Drain Sys Inc Del (WMS) 0.9 $6.2M 43k 144.83
American Superconductor (AMSC) 0.9 $6.2M 215k 28.78
Travere Therapeutics (TVTX) 0.9 $6.1M 159k 38.21
Universal Insurance Holdings (UVE) 0.9 $6.0M 177k 33.80
Ambarella (AMBA) 0.9 $5.9M 84k 70.84
Brainsway Adr (BWAY) 0.9 $5.8M 304k 19.02
Xeris Pharmaceuticals (XERS) 0.9 $5.8M 735k 7.85
Ge Vernova (GEV) 0.9 $5.6M 8.6k 653.57
salesforce (CRM) 0.8 $5.1M 19k 264.91
Patrick Industries (PATK) 0.8 $5.0M 46k 108.43
LSI Industries (LYTS) 0.8 $4.9M 269k 18.32
Frequency Electronics (FEIM) 0.8 $4.9M 91k 53.84
Pegasystems (PEGA) 0.7 $4.7M 79k 59.72
(CXDO) 0.7 $4.7M 730k 6.47
Bwx Technologies (BWXT) 0.7 $4.7M 27k 172.84
Ocular Therapeutix (OCUL) 0.7 $4.7M 386k 12.14
AngioDynamics (ANGO) 0.7 $4.6M 361k 12.84
Mamamancini's Holdings (MAMA) 0.7 $4.5M 336k 13.49
Guidewire Software (GWRE) 0.7 $4.5M 23k 201.01
Globus Med Inc cl a (GMED) 0.7 $4.5M 51k 87.31
Orion Marine (ORN) 0.7 $4.5M 450k 9.94
Winnebago Industries (WGO) 0.7 $4.4M 110k 40.52
Arteris (AIP) 0.7 $4.4M 285k 15.50
Cohu (COHU) 0.7 $4.4M 189k 23.27
Si-bone (SIBN) 0.6 $4.1M 209k 19.72
Cs Disco (LAW) 0.6 $4.1M 530k 7.76
MaxLinear (MXL) 0.6 $4.1M 236k 17.43
Arcutis Biotherapeutics (ARQT) 0.6 $4.1M 141k 29.04
Amprius Technologies (AMPX) 0.6 $4.1M 517k 7.89
Asml Holding N V Adr (ASML) 0.6 $4.1M 3.8k 1069.86
Gentherm (THRM) 0.6 $4.0M 111k 36.37
Great Lakes Dredge & Dock Corporation (GLDD) 0.6 $4.0M 302k 13.12
Jazz Pharmaceuticals (JAZZ) 0.6 $3.9M 23k 170.00
Ouster (OUST) 0.6 $3.9M 181k 21.64
Dollar Tree (DLTR) 0.6 $3.9M 32k 123.01
FreightCar America (RAIL) 0.6 $3.8M 346k 11.07
Oceaneering International (OII) 0.6 $3.7M 155k 24.03
Semtech Corporation (SMTC) 0.6 $3.7M 50k 73.69
Stereotaxis (STXS) 0.5 $3.6M 1.6M 2.30
Columbus McKinnon (CMCO) 0.5 $3.6M 208k 17.25
Daktronics (DAKT) 0.5 $3.5M 179k 19.77
Trimble Navigation (TRMB) 0.5 $3.4M 44k 78.35
Red Violet (RDVT) 0.5 $3.4M 60k 56.95
Workiva Inc equity us cm (WK) 0.5 $3.4M 40k 86.25
Griffon Corporation (GFF) 0.5 $3.4M 46k 73.65
Neuropace (NPCE) 0.5 $3.3M 214k 15.44
Liquidity Services (LQDT) 0.5 $3.2M 106k 30.31
Everus Constr Group (ECG) 0.5 $3.2M 37k 85.56
Ambac Finl (OSG) 0.5 $3.2M 411k 7.78
Varex Imaging (VREX) 0.5 $3.2M 274k 11.65
Axsome Therapeutics (AXSM) 0.5 $3.2M 17k 182.64
Concentra Group Holdings Par (CON) 0.5 $3.2M 161k 19.68
Park Aerospace Corp. Cmn Pke (PKE) 0.5 $3.1M 147k 21.34
Amerant Bancorp Cl A Ord (AMTB) 0.5 $3.0M 154k 19.51
Radcom (RDCM) 0.5 $3.0M 228k 13.08
Evercore Partners (EVR) 0.5 $3.0M 8.8k 340.25
Bgc Group Inc Cl A (BGC) 0.4 $3.0M 331k 8.93
Paymentus Holdings (PAY) 0.4 $2.9M 93k 31.59
Ceragon Networks (CRNT) 0.4 $2.9M 1.4M 2.10
Bioventus Inc - A (BVS) 0.4 $2.9M 388k 7.44
Identiv (INVE) 0.4 $2.8M 724k 3.84
Zscaler Incorporated (ZS) 0.4 $2.8M 12k 224.92
Montrose Environmental Group (MEG) 0.4 $2.7M 110k 24.83
Upwork (UPWK) 0.4 $2.7M 136k 19.82
Baker Hughes A Ge Company (BKR) 0.4 $2.7M 59k 45.54
Journey Med Corp (DERM) 0.4 $2.7M 346k 7.71
Walt Disney Company (DIS) 0.4 $2.7M 23k 113.77
Legalzoom (LZ) 0.4 $2.7M 268k 9.93
Arlo Technologies (ARLO) 0.4 $2.6M 189k 13.99
InfuSystem Holdings (INFU) 0.4 $2.6M 294k 8.97
Extreme Networks (EXTR) 0.4 $2.6M 155k 16.65
908 Devices (MASS) 0.4 $2.5M 483k 5.25
Blacksky Technology (BKSY) 0.4 $2.5M 134k 18.75
Zeta Global Holdings Corp (ZETA) 0.4 $2.5M 121k 20.35
Profound Med Corp (PROF) 0.4 $2.4M 310k 7.87
Novanta (NOVT) 0.4 $2.4M 20k 118.99
Curiositystream (CURI) 0.4 $2.3M 610k 3.80
Eyepoint Pharmaceuticals (EYPT) 0.3 $2.3M 125k 18.27
Blend Labs (BLND) 0.3 $2.3M 749k 3.04
Intuit (INTU) 0.3 $2.3M 3.4k 662.42
Docebo (DCBO) 0.3 $2.2M 101k 22.20
Information Services (III) 0.3 $2.2M 377k 5.78
Ibex (IBEX) 0.3 $2.2M 57k 38.18
Intellicheck Mobilisa (IDN) 0.3 $2.2M 322k 6.68
First Solar (FSLR) 0.3 $2.1M 8.0k 261.23
Carecloud (CCLD) 0.3 $2.0M 685k 2.92
Infineon Technologies (IFNNF) 0.3 $2.0M 45k 44.31
Expro Group Holdings Nv (XPRO) 0.3 $2.0M 148k 13.35
Castellum (CTM) 0.3 $1.9M 2.1M 0.90
Riverview Ban (RVSB) 0.3 $1.9M 380k 5.02
Paychex (PAYX) 0.3 $1.9M 17k 112.18
Energy Recovery (ERII) 0.3 $1.8M 135k 13.49
Phreesia (PHR) 0.3 $1.7M 102k 16.92
Matador Resources (MTDR) 0.3 $1.7M 39k 42.44
Gencor Industries (GENC) 0.2 $1.6M 126k 12.96
Badger Meter (BMI) 0.2 $1.6M 9.4k 174.41
Cheniere Energy (LNG) 0.2 $1.6M 8.3k 194.39
Tempus Ai (TEM) 0.2 $1.6M 27k 59.05
Southland Hldgs (SLND) 0.2 $1.6M 476k 3.32
Valmont Industries (VMI) 0.2 $1.6M 3.9k 402.32
American Express Company (AXP) 0.2 $1.5M 4.0k 369.95
Xylem (XYL) 0.2 $1.5M 11k 136.18
Freightos LTD F (CRGO) 0.2 $1.4M 619k 2.28
Builders FirstSource (BLDR) 0.2 $1.4M 14k 102.89
Procter & Gamble Company (PG) 0.2 $1.4M 9.4k 143.31
Samsara (IOT) 0.2 $1.3M 37k 35.45
Cognex Corporation (CGNX) 0.2 $1.3M 36k 35.98
Corteva (CTVA) 0.2 $1.3M 19k 67.03
Nextera Energy (NEE) 0.2 $1.2M 15k 80.28
Barrick Mining Corp (B) 0.2 $1.2M 27k 43.55
Rivian Automotive Inc Class A (RIVN) 0.2 $1.1M 58k 19.71
Valero Energy Corporation (VLO) 0.2 $1.0M 6.3k 162.79
Coca-Cola Company (KO) 0.2 $1000k 14k 69.91
Arthur J. Gallagher & Co. (AJG) 0.1 $969k 3.7k 258.79
Veralto Corp (VLTO) 0.1 $931k 9.3k 99.78
Medtronic (MDT) 0.1 $927k 9.7k 96.06
Colgate-Palmolive Company (CL) 0.1 $898k 11k 79.02
JPMorgan Chase & Co. (JPM) 0.1 $877k 2.7k 322.22
Air Products & Chemicals (APD) 0.1 $873k 3.5k 247.02
M/a (MTSI) 0.1 $843k 4.9k 171.28
Martin Marietta Materials (MLM) 0.1 $830k 1.3k 622.66
Shoals Technologies Group Cl A Ord (SHLS) 0.1 $814k 96k 8.50
Yaskawa Elec Corp 0.1 $807k 27k 30.34
Aeva Technologies (AEVA) 0.1 $791k 60k 13.28
Proto Labs (PRLB) 0.1 $784k 16k 50.59
4068594 Enphase Energy (ENPH) 0.1 $774k 24k 32.05
Pepsi (PEP) 0.1 $764k 5.3k 143.52
Fluence Energy (FLNC) 0.1 $763k 39k 19.78
Carrier Global Corporation (CARR) 0.1 $756k 14k 52.84
ON Semiconductor (ON) 0.1 $739k 14k 54.15
Nextracker (NXT) 0.1 $725k 8.3k 87.11
Marsh & McLennan Companies 0.1 $723k 3.9k 185.52
Deere & Company (DE) 0.1 $684k 1.5k 465.57
Quanta Services (PWR) 0.1 $665k 1.6k 422.06
Franco-Nevada Corporation (FNV) 0.1 $622k 3.0k 207.28
Ishares Tr Etf (IWO) 0.1 $617k 1.9k 323.01
Dragonfly Energy Holdings Corp (DFLI) 0.1 $602k 196k 3.07
Wheaton Precious Metals Corp (WPM) 0.1 $577k 4.9k 117.52
Verizon Communications (VZ) 0.1 $543k 13k 40.73
One Stop Systems (OSS) 0.1 $498k 69k 7.18
Johnson & Johnson (JNJ) 0.1 $494k 2.4k 206.95
Amtech Systems (ASYS) 0.1 $475k 38k 12.55
Newmont Mining Corporation (NEM) 0.1 $473k 4.7k 99.85
Acm Research (ACMR) 0.1 $464k 12k 39.45
Owlet (OWLT) 0.1 $462k 29k 16.19
Emcor (EME) 0.1 $459k 750.00 611.79
LightPath Technologies (LPTH) 0.1 $442k 41k 10.80
Array Technologies (ARRY) 0.1 $431k 47k 9.22
Vanguard Index Fds Etf (VTI) 0.1 $404k 1.2k 335.27
Snap-on Incorporated (SNA) 0.1 $388k 1.1k 344.60
Novartis Adr (NVS) 0.1 $383k 2.8k 137.87
Grand Canyon Education (LOPE) 0.1 $383k 2.3k 166.31
Lensar (LNSR) 0.1 $349k 30k 11.63
Eton Pharmaceuticals (ETON) 0.1 $341k 20k 16.91
Optex Sys Hldgs (OPXS) 0.0 $328k 23k 14.18
General Electric (GE) 0.0 $326k 1.1k 308.03
Strattec Security (STRT) 0.0 $320k 4.2k 76.14
Camtek (CAMT) 0.0 $313k 2.9k 106.34
Sitime Corp (SITM) 0.0 $300k 850.00 353.19
Perma-pipe International (PPIH) 0.0 $289k 9.5k 30.36
Axcelis Technologies (ACLS) 0.0 $269k 3.4k 80.34
Broadwind Energy (BWEN) 0.0 $268k 95k 2.83
Amplitech Group (AMPG) 0.0 $263k 88k 2.99
Byd Adr (BYDDY) 0.0 $250k 21k 12.11
Duke Energy (DUK) 0.0 $249k 2.1k 117.21
Equinor Asa Adr (EQNR) 0.0 $247k 11k 23.63
Data I/O Corporation (DAIO) 0.0 $237k 75k 3.17
Geospace Technologies (GEOS) 0.0 $231k 14k 16.91
Cps Technologies (CPSH) 0.0 $229k 74k 3.09
Coda Octopus Group (CODA) 0.0 $217k 23k 9.30
Duos Technologies Group (DUOT) 0.0 $215k 19k 11.25
Energy Services of America (ESOA) 0.0 $213k 26k 8.17
Tesla Motors (TSLA) 0.0 $212k 471.00 449.72
Southern Company (SO) 0.0 $209k 2.4k 87.20
Trio-Tech International (TRT) 0.0 $208k 16k 13.24
Archer Daniels Midland Company (ADM) 0.0 $208k 3.6k 57.49
Abbott Laboratories (ABT) 0.0 $204k 1.6k 125.29
Inspiremd (NSPR) 0.0 $203k 114k 1.78
Synalloy Corporation (ACNT) 0.0 $195k 12k 16.19
Oracle Corporation (ORCL) 0.0 $195k 1.0k 194.91
Nephros (NEPH) 0.0 $190k 39k 4.88
GSI Technology (GSIT) 0.0 $189k 31k 6.21
Rapid Micro Biosystems Inc-a (RPID) 0.0 $181k 62k 2.90
Automatic Data Processing (ADP) 0.0 $177k 688.00 257.23
Flexible Solutions International (FSI) 0.0 $177k 26k 6.72
Richardson Electronics (RELL) 0.0 $175k 16k 10.88
TransAct Technologies Incorporated (TACT) 0.0 $173k 43k 4.00
Vince Holding Corp (VNCE) 0.0 $166k 41k 4.08
Genasys (GNSS) 0.0 $156k 73k 2.15
Costco Wholesale Corporation (COST) 0.0 $155k 180.00 862.34
Alpha Pro Tech (APT) 0.0 $153k 34k 4.44
Exxon Mobil Corporation (XOM) 0.0 $150k 1.2k 120.34
Neuroone Med Technologies Corp (NMTC) 0.0 $143k 188k 0.76
RF Industries (RFIL) 0.0 $142k 25k 5.78
Matson (MATX) 0.0 $130k 1.1k 123.55
Applied Industrial Technologies (AIT) 0.0 $130k 505.00 256.77
Champions Oncology (CSBR) 0.0 $126k 18k 6.91
Harvard Bioscience (HBIO) 0.0 $124k 185k 0.67
Fuel Tech (FTEK) 0.0 $121k 77k 1.56
Merck & Co (MRK) 0.0 $119k 1.1k 105.26
NOVA MEASURING Instruments L (NVMI) 0.0 $118k 359.00 328.39
Monolithic Power Systems (MPWR) 0.0 $109k 120.00 906.36
Waste Management (WM) 0.0 $109k 494.00 219.71
Alphabet Inc Class C cs (GOOG) 0.0 $100k 320.00 313.80
DTE Energy Company (DTE) 0.0 $94k 728.00 128.98
Cincinnati Financial Corporation (CINF) 0.0 $90k 549.00 163.32
Nvent Electric Plc Voting equities (NVT) 0.0 $86k 842.00 101.97
Aware (AWRE) 0.0 $80k 43k 1.85
Airgain (AIRG) 0.0 $79k 19k 4.06
Wabtec Corporation (WAB) 0.0 $77k 362.00 213.45
Royal Gold (RGLD) 0.0 $75k 338.00 222.29
Kinross Gold Corp (KGC) 0.0 $75k 2.7k 28.16
Q2 Holdings (QTWO) 0.0 $70k 974.00 72.16
Glaukos (GKOS) 0.0 $69k 611.00 112.91
Laser Photonics Corp (LASE) 0.0 $68k 27k 2.47
Freeport-McMoRan Copper & Gold (FCX) 0.0 $66k 1.3k 50.79
Philip Morris International (PM) 0.0 $65k 402.00 160.40
Morgan Stanley (MS) 0.0 $64k 363.00 177.53
Bristol Myers Squibb (BMY) 0.0 $60k 1.1k 53.94
Amkor Technology (AMKR) 0.0 $60k 1.5k 39.48
Spdr S&p 500 Etf Tr Etf (SPY) 0.0 $58k 85.00 681.92
Clearw.a.hld. (CWAN) 0.0 $55k 2.3k 24.12
Amneal Pharmaceuticals (AMRX) 0.0 $54k 4.3k 12.60
Virtra Inc Com Par (VTSI) 0.0 $54k 13k 4.20
Ocean Pwr Technologies (OPTT) 0.0 $52k 175k 0.30
Ishares Silver Tr Etf (SLV) 0.0 $50k 771.00 64.42
Flowserve Corporation (FLS) 0.0 $48k 697.00 69.38
Senestech (SNES) 0.0 $48k 22k 2.14
Acuity Brands (AYI) 0.0 $47k 131.00 360.04
Rio Tinto Adr (RIO) 0.0 $45k 567.00 80.03
Wec Energy Group (WEC) 0.0 $45k 430.00 105.46
Clean Harbors (CLH) 0.0 $45k 193.00 234.48
Micron Technology (MU) 0.0 $44k 153.00 285.41
Dt Midstream (DTM) 0.0 $44k 364.00 119.68
PPL Corporation (PPL) 0.0 $43k 1.2k 35.02
Gates Industrial Corpratin P ord (GTES) 0.0 $43k 2.0k 21.47
Excelerate Energy Inc-a (EE) 0.0 $41k 1.5k 28.05
Williams Companies (WMB) 0.0 $41k 680.00 60.11
Enterprise Products Partners (EPD) 0.0 $41k 1.3k 32.06
United Parcel Service (UPS) 0.0 $40k 404.00 99.19
Dana Holding Corporation (DAN) 0.0 $40k 1.7k 23.76
Genpact (G) 0.0 $39k 823.00 46.78
Range Resources (RRC) 0.0 $39k 1.1k 35.26
Berkshire Hathaway (BRK.B) 0.0 $38k 76.00 502.64
Atmus Filtration Technologies Ord (ATMU) 0.0 $37k 713.00 51.91
Alkami Technology (ALKT) 0.0 $36k 1.6k 23.07
Arcosa (ACA) 0.0 $35k 331.00 106.32
Sempra Energy (SRE) 0.0 $34k 390.00 88.29
Itron (ITRI) 0.0 $34k 362.00 92.86
Visa (V) 0.0 $32k 92.00 350.71
Qnity Electronics (Q) 0.0 $29k 357.00 81.65
Dupont De Nemours (DD) 0.0 $29k 715.00 40.20
Avient Corp (AVNT) 0.0 $29k 915.00 31.24
Teradyne (TER) 0.0 $28k 145.00 193.56
Eaton (ETN) 0.0 $28k 88.00 318.51
Remitly Global (RELY) 0.0 $28k 2.0k 13.80
Rockwell Automation (ROK) 0.0 $27k 70.00 389.07
Five Below (FIVE) 0.0 $26k 137.00 188.36
Constellation Brands (STZ) 0.0 $25k 178.00 137.96
BP Adr (BP) 0.0 $23k 662.00 34.73
Amphenol Corporation (APH) 0.0 $23k 168.00 135.14
Tripadvisor (TRIP) 0.0 $22k 1.5k 14.56
Ecolab (ECL) 0.0 $22k 83.00 262.52
Helmerich & Payne (HP) 0.0 $21k 733.00 28.68
Schlumberger (SLB) 0.0 $20k 514.00 38.38
Iac Interactivecorp (IAC) 0.0 $19k 486.00 39.10
Vaneck Etf Trust Etf (GDXJ) 0.0 $18k 156.00 113.78
Sandoz Group (SDZNY) 0.0 $15k 203.00 72.77
Regal-beloit Corporation (RRX) 0.0 $14k 100.00 140.32
FedEx Corporation (FDX) 0.0 $13k 45.00 288.87
Trane Technologies (TT) 0.0 $13k 33.00 389.21
Angi Inc Cl A (ANGI) 0.0 $13k 984.00 12.93
Sanofi Sa Adr (SNY) 0.0 $9.7k 200.00 48.46
Union Pacific Corporation (UNP) 0.0 $8.1k 35.00 231.31
Contemporary Amperex Technolog (CYATY) 0.0 $7.4k 458.00 16.12
Watts Water Technologies (WTS) 0.0 $1.4k 5.00 276.00
Industries N shs - a - (LYB) 0.0 $1.1k 25.00 43.32
Organon & Co (OGN) 0.0 $78.999800 11.00 7.18