Essex Investment Management

Essex Investment Management as of June 30, 2026

Portfolio Holdings for Essex Investment Management

Essex Investment Management holds 306 positions in its portfolio as reported in the June 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tower Semiconductor (TSEM) 3.6 $28M 106k 260.64
Lincoln Educational Services Corporation (LINC) 2.2 $17M 340k 49.90
Kiniksa Pharmaceuticals Intl P Ord Shs Cl A (KNSA) 2.0 $15M 241k 63.95
Ouster (OUST) 1.9 $14M 226k 62.52
Ligand Pharmaceuticals In (LGND) 1.8 $14M 44k 316.09
CECO Environmental (CECO) 1.8 $14M 150k 90.74
Sterling Construction Company (STRL) 1.8 $14M 16k 839.36
Arteris (AIP) 1.8 $14M 278k 48.59
Mirum Pharmaceuticals (MIRM) 1.6 $12M 106k 117.07
Argan (AGX) 1.6 $12M 16k 798.55
Graham Corporation (GHM) 1.5 $12M 93k 123.79
D R S Technologies (DRS) 1.4 $11M 250k 42.67
Adaptive Biotechnologies Cor (ADPT) 1.3 $10M 473k 21.45
Werner Enterprises (WERN) 1.3 $10M 232k 43.61
Hci (HCI) 1.3 $9.9M 56k 175.25
Ge Vernova (GEV) 1.3 $9.7M 8.3k 1174.86
Cohu (COHU) 1.3 $9.7M 131k 73.91
Apple (AAPL) 1.2 $9.4M 32k 289.36
American Superconductor (AMSC) 1.2 $9.2M 222k 41.51
Brainsway Adr (BWAY) 1.2 $9.2M 593k 15.51
TETRA Technologies (TTI) 1.1 $8.4M 741k 11.33
LSI Industries (LYTS) 1.0 $7.9M 296k 26.58
Marvell Technology (MRVL) 1.0 $7.7M 26k 297.89
Kratos Defense & Security Solutions (KTOS) 1.0 $7.7M 154k 49.86
Travere Therapeutics (TVTX) 1.0 $7.6M 134k 56.81
Goldman Sachs (GS) 1.0 $7.6M 7.5k 1011.37
Patrick Industries (PATK) 1.0 $7.4M 83k 89.78
Orion Marine (ORN) 1.0 $7.4M 443k 16.82
Asml Hldg Nv Adr (ASML) 0.9 $7.0M 3.5k 1989.44
Ambarella (AMBA) 0.9 $6.9M 80k 85.80
Novocure Ltd ord (NVCR) 0.9 $6.7M 440k 15.15
Amazon (AMZN) 0.8 $6.4M 27k 238.34
Apex Technology Acqui-cl A (AVPT) 0.8 $6.4M 572k 11.21
Advanced Drain Sys Inc Del (WMS) 0.8 $6.3M 40k 156.96
Semtech Corporation (SMTC) 0.8 $6.2M 38k 161.85
Oceaneering International (OII) 0.8 $6.1M 152k 40.52
Everus Constr Group (ECG) 0.8 $6.0M 36k 165.95
Agnico (AEM) 0.8 $6.0M 39k 155.13
Liquidia Technologies (LQDA) 0.8 $6.0M 75k 79.73
Willdan (WLDN) 0.8 $5.9M 75k 79.10
Frequency Electronics (FEIM) 0.8 $5.9M 89k 66.35
Microsoft Corporation (MSFT) 0.8 $5.9M 16k 373.02
Mamamancini's Holdings (MAMA) 0.8 $5.8M 327k 17.85
Xeris Pharmaceuticals (XERS) 0.7 $5.7M 716k 7.92
Park Aerospace Corp. Cmn Pke (PKE) 0.7 $5.5M 144k 38.16
Biodesix (BDSX) 0.7 $5.5M 242k 22.55
Xometry (XMTR) 0.7 $5.4M 56k 96.52
Bluelinx Hldgs (BXC) 0.7 $5.4M 87k 61.88
Mitek Systems (MITK) 0.7 $5.3M 264k 20.13
(CXDO) 0.7 $5.3M 711k 7.47
Mirion Technologies Inc - US (MIR) 0.7 $5.3M 295k 17.93
Red Violet (RDVT) 0.7 $5.3M 83k 63.72
Jazz Pharmaceuticals (JAZZ) 0.7 $5.2M 22k 240.97
Diodes Incorporated (DIOD) 0.7 $5.1M 47k 109.44
Apyx Medical Corporation (APYX) 0.7 $5.1M 1.1M 4.49
Bwx Technologies (BWXT) 0.6 $5.0M 25k 194.65
Ocular Therapeutix (OCUL) 0.6 $4.7M 482k 9.82
Sprouts Fmrs Mkt (SFM) 0.6 $4.7M 55k 84.58
LightPath Technologies (LPTH) 0.6 $4.7M 285k 16.35
Insmed (INSM) 0.6 $4.6M 43k 106.62
Exzeo Group (XZO) 0.6 $4.5M 269k 16.87
Mistras (MG) 0.6 $4.5M 257k 17.47
Si-bone (SIBN) 0.6 $4.4M 271k 16.32
Concentra Group Holdings Par (CON) 0.6 $4.4M 149k 29.75
Interface (TILE) 0.6 $4.4M 123k 35.84
Griffon Corporation (GFF) 0.6 $4.4M 45k 97.53
Johnson Outdoors (JOUT) 0.6 $4.3M 94k 46.04
Daktronics (DAKT) 0.6 $4.2M 216k 19.56
Columbus McKinnon (CMCO) 0.6 $4.2M 278k 15.13
Badger Meter (BMI) 0.5 $4.2M 28k 148.38
908 Devices (MASS) 0.5 $4.1M 470k 8.70
Liquidity Services (LQDT) 0.5 $4.0M 103k 39.12
Precigen (PGEN) 0.5 $4.0M 706k 5.70
Axsome Therapeutics (AXSM) 0.5 $4.0M 16k 244.77
Amprius Technologies (AMPX) 0.5 $3.9M 285k 13.86
Globus Med Inc cl a (GMED) 0.5 $3.9M 50k 79.01
Lantronix (LTRX) 0.5 $3.9M 662k 5.88
Legacy Ed (LGCY) 0.5 $3.9M 330k 11.76
Riskified (RSKD) 0.5 $3.9M 769k 5.04
Amerant Bancorp Cl A Ord (AMTB) 0.5 $3.8M 150k 25.52
Sophia Genetics Sa (SOPH) 0.5 $3.8M 663k 5.77
Nuvation Bio (NUVB) 0.5 $3.8M 671k 5.68
Gentherm (THRM) 0.5 $3.7M 108k 34.11
Blacksky Technology (BKSY) 0.5 $3.6M 130k 27.92
Arcutis Biotherapeutics (ARQT) 0.5 $3.6M 138k 26.22
Dollar Tree (DLTR) 0.5 $3.6M 30k 120.95
Bgc Group Inc Cl A (BGC) 0.5 $3.4M 322k 10.69
Ambac Finl (OSG) 0.4 $3.4M 539k 6.24
Forum Energy Technologies In (FET) 0.4 $3.3M 67k 50.23
Information Services (III) 0.4 $3.3M 808k 4.11
Neuropace (NPCE) 0.4 $3.3M 209k 15.89
FreightCar America (RAIL) 0.4 $3.3M 338k 9.74
Novanta (NOVT) 0.4 $3.2M 20k 162.24
Crowdstrike Hldgs Inc cl a (CRWD) 0.4 $3.2M 4.2k 763.14
Coda Octopus Group (CODA) 0.4 $3.1M 322k 9.77
Baker Hughes A Ge Company (BKR) 0.4 $3.0M 54k 55.50
Ibex (IBEX) 0.4 $3.0M 98k 30.37
Docebo (DCBO) 0.4 $3.0M 165k 17.90
Evercore Partners (EVR) 0.4 $2.9M 8.6k 341.44
Brc Inc Com Cl A (BRCC) 0.4 $2.9M 2.6M 1.11
KVH Industries (KVHI) 0.4 $2.9M 293k 9.91
Ishares Tr Etf (IWO) 0.4 $2.8M 7.2k 393.96
Realreal (REAL) 0.4 $2.7M 231k 11.79
Stereotaxis (STXS) 0.3 $2.6M 1.5M 1.72
Guidewire Software (GWRE) 0.3 $2.6M 21k 123.05
Pure Storage Inc - Class A (P) 0.3 $2.6M 32k 78.79
Arlo Technologies (ARLO) 0.3 $2.5M 184k 13.48
Trimble Navigation (TRMB) 0.3 $2.5M 48k 51.18
Zeta Global Holdings Corp (ZETA) 0.3 $2.3M 118k 19.68
Paymentus Holdings (PAY) 0.3 $2.2M 91k 24.16
Walt Disney Company (DIS) 0.3 $2.2M 23k 96.25
Blend Labs (BLND) 0.3 $2.1M 1.3M 1.71
Expro Group Holdings Nv (XPRO) 0.3 $2.1M 144k 14.77
Tonix Pharmaceuticals Hldg (TNXP) 0.3 $2.1M 165k 12.76
Riverview Ban (RVSB) 0.3 $2.0M 374k 5.43
Intellicheck Mobilisa (IDN) 0.3 $2.0M 488k 4.10
Tempus Ai (TEM) 0.3 $2.0M 34k 57.93
Pegasystems (PEGA) 0.3 $2.0M 66k 29.97
Cheniere Energy (LNG) 0.3 $1.9M 8.0k 239.01
Matador Resources (MTDR) 0.2 $1.9M 38k 49.78
M/a (MTSI) 0.2 $1.9M 4.9k 380.37
ON Semiconductor (ON) 0.2 $1.8M 19k 94.54
Eyepoint Pharmaceuticals (EYPT) 0.2 $1.7M 122k 14.30
Curiositystream (CURI) 0.2 $1.6M 595k 2.66
Carrier Global Corporation (CARR) 0.2 $1.5M 21k 73.35
Acm Research (ACMR) 0.2 $1.5M 12k 126.89
Freightos LTD F (CRGO) 0.2 $1.5M 955k 1.52
Alfen Nv 0.2 $1.4M 81k 17.97
Cognex Corporation (CGNX) 0.2 $1.4M 20k 72.42
Xylem (XYL) 0.2 $1.2M 11k 118.21
Nextracker (NXT) 0.2 $1.2M 10k 119.14
Identiv (INVE) 0.2 $1.2M 484k 2.52
Ambiq Micro (AMBQ) 0.2 $1.2M 14k 88.30
Quanta Services (PWR) 0.1 $1.1M 1.6k 720.04
Yaskawa Elec Corp 0.1 $1.1M 26k 43.24
Lindsay Corporation (LNN) 0.1 $1.1M 9.0k 123.80
Upwork (UPWK) 0.1 $1.1M 132k 8.36
Corteva (CTVA) 0.1 $1.1M 13k 84.69
Paychex (PAYX) 0.1 $1.1M 11k 98.33
Solv Energy Inc Com Shs Cl A (MWH) 0.1 $1.0M 30k 34.05
Rivian Automotive Inc Class A (RIVN) 0.1 $981k 57k 17.35
Aeva Technologies (AEVA) 0.1 $977k 34k 28.72
Shoals Technologies Group Cl A Ord (SHLS) 0.1 $927k 94k 9.90
JPMorgan Chase & Co. (JPM) 0.1 $891k 2.7k 327.33
4068594 Enphase Energy (ENPH) 0.1 $873k 18k 49.24
Valmont Industries (VMI) 0.1 $872k 1.5k 577.60
Amtech Systems (ASYS) 0.1 $872k 38k 23.08
Nextera Energy (NEE) 0.1 $871k 9.9k 87.77
Samsara (IOT) 0.1 $867k 27k 32.43
Arthur J. Gallagher & Co. (AJG) 0.1 $860k 3.7k 229.57
Procter & Gamble Company (PG) 0.1 $859k 5.9k 146.64
Coca-Cola Company (KO) 0.1 $858k 11k 81.27
Contemporary Amperex Techno 0.1 $854k 9.5k 89.52
Barrick Mining Corp (B) 0.1 $843k 23k 36.73
Valero Energy Corporation (VLO) 0.1 $817k 3.1k 260.44
Mp Materials Corp (MP) 0.1 $779k 14k 56.01
Martin Marietta Materials (MLM) 0.1 $769k 1.3k 576.70
Edap Tms (FOCL) 0.1 $756k 146k 5.18
Electrovaya (ELVA) 0.1 $754k 72k 10.50
Air Products & Chemicals (APD) 0.1 $752k 2.6k 293.18
Eton Pharmaceuticals (ETON) 0.1 $729k 20k 36.20
Solaredge Technologies (SEDG) 0.1 $703k 12k 58.44
Colgate-Palmolive Company (CL) 0.1 $635k 6.9k 91.68
Axcelis Technologies (ACLS) 0.1 $635k 3.4k 189.45
Sitime Corp (SITM) 0.1 $634k 850.00 745.56
Veralto Corp (VLTO) 0.1 $630k 7.1k 88.68
Rapid Micro Biosystems Inc-a (RPID) 0.1 $628k 363k 1.73
Franco-Nevada Corporation (FNV) 0.1 $623k 3.0k 208.44
Emcor (EME) 0.1 $609k 734.00 829.88
Johnson & Johnson (JNJ) 0.1 $605k 2.4k 253.97
Marsh & McLennan Companies (MRSH) 0.1 $588k 3.5k 166.67
Medtronic (MDT) 0.1 $579k 7.4k 78.23
Cameco Corporation (CCJ) 0.1 $574k 5.6k 101.86
Wheaton Precious Metals Corp (WPM) 0.1 $551k 4.9k 112.32
Energy Services of America (ESOA) 0.1 $504k 26k 19.34
Camtek (CAMT) 0.1 $480k 2.9k 163.12
One Stop Systems (OSS) 0.1 $467k 26k 18.18
Intuit (INTU) 0.1 $461k 1.8k 261.00
Broadwind Energy (BWEN) 0.1 $457k 95k 4.83
Vanguard Index Fds Etf (VTI) 0.1 $446k 1.2k 370.04
Snap-on Incorporated (SNA) 0.1 $437k 1.1k 402.40
Amplitech Group (AMPG) 0.1 $421k 61k 6.96
Pepsi (PEP) 0.1 $420k 3.1k 135.40
American Express Company (AXP) 0.1 $412k 1.2k 338.25
RF Industries (RFIL) 0.0 $379k 18k 21.21
Newmont Mining Corporation (NEM) 0.0 $378k 4.0k 93.40
Eos Energy Enterprises Inc Com Cl A (EOSE) 0.0 $355k 60k 5.88
General Electric (GE) 0.0 $355k 950.00 373.73
Strattec Security (STRT) 0.0 $342k 4.2k 81.45
Grand Canyon Education (LOPE) 0.0 $329k 2.3k 143.11
Equinor Asa Adr (EQNR) 0.0 $328k 11k 31.40
Optex Sys Hldgs (OPXS) 0.0 $324k 23k 14.03
Richardson Electronics (RELL) 0.0 $305k 16k 19.01
Lensar (LNSR) 0.0 $304k 53k 5.71
Novartis Adr (NVS) 0.0 $294k 1.9k 156.72
Data I/O Corporation (DAIO) 0.0 $294k 75k 3.94
Vince Holding Corp (VNCE) 0.0 $291k 41k 7.15
Archer Daniels Midland Company (ADM) 0.0 $280k 3.7k 76.40
Verizon Communications (VZ) 0.0 $277k 6.5k 42.34
Commercial Vehicle (CVGI) 0.0 $276k 60k 4.62
Trio-Tech International (TRT) 0.0 $273k 22k 12.32
Duke Energy (DUK) 0.0 $265k 2.1k 126.58
Optical Cable Corporation (OCC) 0.0 $265k 13k 20.97
Perma-pipe International (PPIH) 0.0 $259k 9.5k 27.23
TransAct Technologies Incorporated (TACT) 0.0 $252k 43k 5.84
Tesla Motors (TSLA) 0.0 $241k 573.00 420.60
Orion Energy Sys (OESX) 0.0 $241k 21k 11.69
Precision Optics Corp Inc Ma (POCI) 0.0 $238k 47k 5.10
GSI Technology (GSIT) 0.0 $235k 30k 7.73
Duos Technologies Group (DUOT) 0.0 $229k 19k 12.00
Southern Company (SO) 0.0 $225k 2.4k 95.71
Safe T Group (ALAR) 0.0 $223k 28k 8.04
Matson (MATX) 0.0 $202k 1.1k 192.23
NOVA MEASURING Instruments L (NVMI) 0.0 $195k 359.00 542.94
Alpha Pro Tech (APT) 0.0 $193k 34k 5.62
Fatpipe Inc Ut (FATN) 0.0 $183k 29k 6.30
Micron Technology (MU) 0.0 $177k 153.00 1154.29
Flexible Solutions International (FSI) 0.0 $174k 26k 6.66
Netsol Technologies (NTWK) 0.0 $173k 37k 4.62
Applied Industrial Technologies (AIT) 0.0 $171k 505.00 338.15
Fuel Tech (FTEK) 0.0 $171k 77k 2.21
Exxon Mobil Corporation (XOM) 0.0 $170k 1.2k 136.72
Costco Wholesale Corporation (COST) 0.0 $168k 180.00 935.47
Harvard Bioscience (HBIO) 0.0 $166k 27k 6.15
Monolithic Power Systems (MPWR) 0.0 $166k 120.00 1382.36
Liveone (LVO) 0.0 $157k 25k 6.40
Automatic Data Processing (ADP) 0.0 $152k 677.00 223.95
Oracle Corporation (ORCL) 0.0 $147k 1.0k 146.55
Abbott Laboratories (ABT) 0.0 $146k 1.6k 90.74
Merck & Co (MRK) 0.0 $146k 1.1k 128.50
Nephros (NEPH) 0.0 $139k 39k 3.57
NeuroOne Medical Technologies Corporat (NMTC) 0.0 $133k 44k 3.04
Amkor Technology (AMKR) 0.0 $132k 1.5k 86.23
Genasys (GNSS) 0.0 $124k 73k 1.70
Cps Technologies (CPSH) 0.0 $119k 22k 5.52
Alphabet Inc Class C cs (GOOG) 0.0 $113k 320.00 353.33
Champions Oncology (CSBR) 0.0 $112k 18k 6.16
Waste Management (WM) 0.0 $110k 494.00 222.88
DTE Energy Company (DTE) 0.0 $107k 699.00 152.37
Cincinnati Financial Corporation (CINF) 0.0 $102k 549.00 185.14
Nvent Electric Plc Voting equities (NVT) 0.0 $86k 508.00 169.61
Wabtec Corporation (WAB) 0.0 $83k 306.00 269.60
Freeport-McMoRan Copper & Gold (FCX) 0.0 $82k 1.3k 62.89
Morgan Stanley (MS) 0.0 $76k 363.00 209.04
Amneal Pharmaceuticals (AMRX) 0.0 $74k 4.3k 17.31
Philip Morris International (PM) 0.0 $73k 402.00 180.91
Rio Tinto Adr (RIO) 0.0 $68k 713.00 94.93
Royal Gold (RGLD) 0.0 $68k 338.00 199.61
Bristol Myers Squibb (BMY) 0.0 $65k 1.1k 57.62
Kinross Gold Corp (KGC) 0.0 $63k 2.7k 23.62
Qnity Electronics (Q) 0.0 $58k 357.00 163.31
Clean Harbors (CLH) 0.0 $58k 193.00 298.75
Glaukos (GKOS) 0.0 $57k 407.00 139.76
Excelerate Energy Inc-a (EE) 0.0 $56k 1.5k 37.99
Gates Industrial Corpratin P ord (GTES) 0.0 $56k 2.0k 27.97
Ocean Pwr Technologies (OPTT) 0.0 $54k 205k 0.26
Flowserve Corporation (FLS) 0.0 $52k 697.00 74.16
Dt Midstream (DTM) 0.0 $51k 350.00 146.74
Wec Energy Group (WEC) 0.0 $50k 430.00 116.77
Acuity Brands (AYI) 0.0 $49k 131.00 376.66
Arcosa (ACA) 0.0 $48k 331.00 145.29
Infineon Technologies Adr (IFNNY) 0.0 $48k 511.00 93.96
Q2 Holdings (QTWO) 0.0 $47k 974.00 48.10
Teradyne (TER) 0.0 $46k 94.00 483.84
Dana Holding Corporation (DAN) 0.0 $45k 1.7k 27.21
Remitly Global (RELY) 0.0 $45k 2.0k 22.41
PPL Corporation (PPL) 0.0 $45k 1.2k 36.35
United Parcel Service (UPS) 0.0 $43k 404.00 107.50
Williams Companies (WMB) 0.0 $43k 573.00 74.34
Ishares Silver Tr Etf (SLV) 0.0 $41k 771.00 53.47
Range Resources (RRC) 0.0 $41k 1.1k 37.19
Virtra Inc Com Par (VTSI) 0.0 $40k 13k 3.14
Senestech (SNES) 0.0 $39k 26k 1.49
Berkshire Hathaway (BRK.B) 0.0 $38k 76.00 500.39
Atmus Filtration Technologies Ord (ATMU) 0.0 $36k 713.00 50.99
Sempra Energy (SRE) 0.0 $36k 390.00 92.71
Workiva Inc equity us cm (WK) 0.0 $35k 728.00 48.51
Rockwell Automation (ROK) 0.0 $35k 70.00 495.09
Avient Corp (AVNT) 0.0 $34k 915.00 36.96
Dupont De Nemours (DD) 0.0 $32k 238.00 135.64
Visa (V) 0.0 $32k 92.00 343.09
Itron (ITRI) 0.0 $31k 362.00 86.53
Amphenol Corporation (APH) 0.0 $30k 168.00 176.32
Alkami Technology (ALKT) 0.0 $28k 1.6k 18.12
Eaton (ETN) 0.0 $28k 66.00 426.12
Ecolab (ECL) 0.0 $27k 97.00 278.61
Constellation Brands (STZ) 0.0 $25k 178.00 139.09
Five Below (FIVE) 0.0 $25k 137.00 179.79
BP Adr (BP) 0.0 $25k 662.00 36.95
Helmerich & Payne (HP) 0.0 $24k 733.00 32.74
Schlumberger (SLB) 0.0 $24k 514.00 46.49
Regal-beloit Corporation (RRX) 0.0 $24k 100.00 238.19
Genpact (G) 0.0 $23k 823.00 27.50
Iac Interactivecorp 0.0 $22k 486.00 46.16
Alphabet Inc Class A cs (GOOGL) 0.0 $22k 62.00 357.37
Tripadvisor (TRIP) 0.0 $21k 1.5k 13.71
Contemporary Amperex Technolog (CYATY) 0.0 $16k 722.00 22.46
Vaneck Etf Trust Etf (GDXJ) 0.0 $15k 156.00 98.25
FedEx Corporation (FDX) 0.0 $14k 45.00 313.13
Union Pacific Corporation (UNP) 0.0 $9.5k 35.00 272.00
Sanofi Sa Adr (SNY) 0.0 $8.5k 200.00 42.66
Sandoz Group (SDZNY) 0.0 $4.3k 47.00 90.49
Fedex Fght Hldg (FDXF) 0.0 $3.3k 22.00 151.00
Watts Water Technologies (WTS) 0.0 $2.0k 5.00 391.40
Industries N shs - a - (LYB) 0.0 $1.3k 25.00 52.64
Organon & Co (OGN) 0.0 $149.000500 11.00 13.55