Essex Investment Management Co Llc

Institutional manager — quarterly 13F holdings, Q ending 2026-03-31

Reported value
$631.7M
Q ending 2026-03-31
Prior quarter
$655.9M
Q ending 2025-12-31
Change
-3.7% QoQ · +31.8% YoY
Positions
305
reported holdings

Largest positions

Top 100 of 305 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
HoldingTickerTypeValueShares
Tower Semiconductor LtdShares$20.3M116K
Lincoln Edl Svcs CorpLINCShares$14.5M355K
Sterling Infrastructure IncSTRLShares$13.1M32K
Kiniksa Pharmaceuticals Intl PShares$12.0M249K
Ligand Pharmaceuticals IncLGNDShares$11.7M58K
Leonardo Drs IncDRSShares$11.6M261K
Kratos Defense & Sec SolutionsKTOSShares$11.2M159K
Globalstar IncGSATShares$11.0M166K
Insmed IncINSMShares$10.2M63K
Graham CorpGHMShares$10.1M128K
Mirum Pharmaceuticals IncMIRMShares$10.0M108K
Ceco Environmental CorpCECOShares$9.4M157K
Hci Group IncHCIShares$8.9M58K
Argan IncAGXShares$8.8M16K
Apple IncAAPLShares$8.3M33K
Brainsway LtdBWAYShares$8.2M619K
Agnico Eagle Mines LtdAEMShares$7.8M39K
American Superconductor CorpAMSCShares$7.7M228K
Amprius Technologies IncAMPXShares$7.5M445K
Ge Vernova IncGEVShares$7.3M8K
Primoris Svcs CorpPRIMShares$6.9M48K
Adaptive Biotechnologies CorpADPTShares$6.8M493K
Tetra Technologies Inc DelTTIShares$6.6M774K
Goldman Sachs Group IncGSShares$6.4M8K
Willdan Group IncWLDNShares$6.0M78K
Cohu IncCOHUShares$5.9M192K
Microsoft CorpMSFTShares$5.8M16K
Mirion Technologies IncMIRShares$5.7M309K
Amazon Com IncAMZNShares$5.7M27K
Oceaneering Intl IncOIIShares$5.6M158K
Advanced Drain Sys Inc DelWMSShares$5.6M41K
Bioventus IncBVSShares$5.5M603K
Mamas Creations IncMAMAShares$5.2M342K
Bwx Technologies IncBWXTShares$5.2M26K
Patrick Inds IncPATKShares$5.1M46K
Lsi Inds Inc OhioLYTSShares$5.1M274K
Orion Group Hldgs IncORNShares$5.0M462K
Novocure LtdShares$4.9M452K
Travere Therapeutics IncTVTXShares$4.8M162K
Arteris IncAIPShares$4.8M290K
Avepoint IncAVPTShares$4.7M498K
Asml Hldg NvShares$4.7M4K
Syndax Pharmaceuticals IncSNDXShares$4.6M199K
Crexendo IncCXDOShares$4.6M743K
Everus Constr GroupECGShares$4.5M38K
Xeris Biopharma Holdings IncXERSShares$4.3M748K
Globus Med IncGMEDShares$4.3M50K
Ambarella IncShares$4.2M82K
Exzeo Group IncXZOShares$4.2M288K
Frequency Electrs IncFEIMShares$4.1M93K
Jazz Pharmaceuticals PlcShares$4.1M22K
Park Aerospace CorpPKEShares$4.1M150K
Mistras Group IncMGShares$4.0M269K
Semtech CorpSMTCShares$3.9M51K
Intellicheck Mobilisa IncIDNShares$3.8M538K
Mitek Sys IncMITKShares$3.7M276K
Marvell Technology IncMRVLShares$3.6M36K
Daktronics IncDAKTShares$3.6M182K
Agios Pharmaceuticals IncAGIOShares$3.5M103K
Amerant Bancorp IncAMTBShares$3.5M157K
Sophia Genetics SaShares$3.4M693K
Blacksky Technology IncBKSYShares$3.4M136K
Griffon CorpGFFShares$3.4M47K
Arcutis Biotherapeutics IncARQTShares$3.4M144K
Ouster IncOUSTShares$3.4M185K
Everquote IncEVERShares$3.3M217K
Baker Hughes CompanyBKRShares$3.3M55K
Diodes IncDIODShares$3.3M49K
Salesforce IncCRMShares$3.3M18K
Ocular Therapeutix IncOCULShares$3.3M393K
Apyx Medical CorporationAPYXShares$3.3M901K
Liquidity Svcs IncLQDTShares$3.3M108K
Bgc Group IncBGCShares$3.3M337K
Dollar Tree IncDLTRShares$3.2M30K
Concentra Group Holdings ParenCONShares$3.2M150K
Pegasystems IncPEGAShares$3.2M74K
Guidewire Software IncGWREShares$3.2M21K
Riskified LtdShares$3.1M803K
Gentherm IncTHRMShares$3.1M113K
Columbus Mckinnon Corp N YCMCOShares$3.1M212K
Docebo IncDCBOShares$3.0M172K
908 Devices IncMASSShares$3.0M491K
Varex Imaging CorpVREXShares$3.0M280K
Liquidia CorporationLQDAShares$3.0M78K
Stereotaxis IncSTXSShares$2.9M1.6M
Johnson Outdoors IncJOUTShares$2.9M63K
Neuropace IncNPCEShares$2.9M218K
Freightcar Amer IncRAILShares$2.8M352K
Infusystem Hldgs IncINFUShares$2.8M299K
Axsome Therapeutics Inc.AXSMShares$2.8M16K
Arlo Technologies IncARLOShares$2.7M193K
Identiv IncINVEShares$2.7M737K
Si Bone IncSIBNShares$2.7M212K
Trimble IncTRMBShares$2.7M41K
Evercore IncEVRShares$2.7M9K
Expro Group Holdings NvShares$2.6M150K
Carecloud IncCCLDShares$2.5M698K
Matador Res CoMTDRShares$2.5M40K
Novanta IncNOVTShares$2.4M21K
Onterris IncONTShares$2.4M111K

Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.