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.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Tower Semiconductor Ltd | Shares | $20.3M | 116K | |
| Lincoln Edl Svcs Corp | LINC | Shares | $14.5M | 355K |
| Sterling Infrastructure Inc | STRL | Shares | $13.1M | 32K |
| Kiniksa Pharmaceuticals Intl P | Shares | $12.0M | 249K | |
| Ligand Pharmaceuticals Inc | LGND | Shares | $11.7M | 58K |
| Leonardo Drs Inc | DRS | Shares | $11.6M | 261K |
| Kratos Defense & Sec Solutions | KTOS | Shares | $11.2M | 159K |
| Globalstar Inc | GSAT | Shares | $11.0M | 166K |
| Insmed Inc | INSM | Shares | $10.2M | 63K |
| Graham Corp | GHM | Shares | $10.1M | 128K |
| Mirum Pharmaceuticals Inc | MIRM | Shares | $10.0M | 108K |
| Ceco Environmental Corp | CECO | Shares | $9.4M | 157K |
| Hci Group Inc | HCI | Shares | $8.9M | 58K |
| Argan Inc | AGX | Shares | $8.8M | 16K |
| Apple Inc | AAPL | Shares | $8.3M | 33K |
| Brainsway Ltd | BWAY | Shares | $8.2M | 619K |
| Agnico Eagle Mines Ltd | AEM | Shares | $7.8M | 39K |
| American Superconductor Corp | AMSC | Shares | $7.7M | 228K |
| Amprius Technologies Inc | AMPX | Shares | $7.5M | 445K |
| Ge Vernova Inc | GEV | Shares | $7.3M | 8K |
| Primoris Svcs Corp | PRIM | Shares | $6.9M | 48K |
| Adaptive Biotechnologies Corp | ADPT | Shares | $6.8M | 493K |
| Tetra Technologies Inc Del | TTI | Shares | $6.6M | 774K |
| Goldman Sachs Group Inc | GS | Shares | $6.4M | 8K |
| Willdan Group Inc | WLDN | Shares | $6.0M | 78K |
| Cohu Inc | COHU | Shares | $5.9M | 192K |
| Microsoft Corp | MSFT | Shares | $5.8M | 16K |
| Mirion Technologies Inc | MIR | Shares | $5.7M | 309K |
| Amazon Com Inc | AMZN | Shares | $5.7M | 27K |
| Oceaneering Intl Inc | OII | Shares | $5.6M | 158K |
| Advanced Drain Sys Inc Del | WMS | Shares | $5.6M | 41K |
| Bioventus Inc | BVS | Shares | $5.5M | 603K |
| Mamas Creations Inc | MAMA | Shares | $5.2M | 342K |
| Bwx Technologies Inc | BWXT | Shares | $5.2M | 26K |
| Patrick Inds Inc | PATK | Shares | $5.1M | 46K |
| Lsi Inds Inc Ohio | LYTS | Shares | $5.1M | 274K |
| Orion Group Hldgs Inc | ORN | Shares | $5.0M | 462K |
| Novocure Ltd | Shares | $4.9M | 452K | |
| Travere Therapeutics Inc | TVTX | Shares | $4.8M | 162K |
| Arteris Inc | AIP | Shares | $4.8M | 290K |
| Avepoint Inc | AVPT | Shares | $4.7M | 498K |
| Asml Hldg Nv | Shares | $4.7M | 4K | |
| Syndax Pharmaceuticals Inc | SNDX | Shares | $4.6M | 199K |
| Crexendo Inc | CXDO | Shares | $4.6M | 743K |
| Everus Constr Group | ECG | Shares | $4.5M | 38K |
| Xeris Biopharma Holdings Inc | XERS | Shares | $4.3M | 748K |
| Globus Med Inc | GMED | Shares | $4.3M | 50K |
| Ambarella Inc | Shares | $4.2M | 82K | |
| Exzeo Group Inc | XZO | Shares | $4.2M | 288K |
| Frequency Electrs Inc | FEIM | Shares | $4.1M | 93K |
| Jazz Pharmaceuticals Plc | Shares | $4.1M | 22K | |
| Park Aerospace Corp | PKE | Shares | $4.1M | 150K |
| Mistras Group Inc | MG | Shares | $4.0M | 269K |
| Semtech Corp | SMTC | Shares | $3.9M | 51K |
| Intellicheck Mobilisa Inc | IDN | Shares | $3.8M | 538K |
| Mitek Sys Inc | MITK | Shares | $3.7M | 276K |
| Marvell Technology Inc | MRVL | Shares | $3.6M | 36K |
| Daktronics Inc | DAKT | Shares | $3.6M | 182K |
| Agios Pharmaceuticals Inc | AGIO | Shares | $3.5M | 103K |
| Amerant Bancorp Inc | AMTB | Shares | $3.5M | 157K |
| Sophia Genetics Sa | Shares | $3.4M | 693K | |
| Blacksky Technology Inc | BKSY | Shares | $3.4M | 136K |
| Griffon Corp | GFF | Shares | $3.4M | 47K |
| Arcutis Biotherapeutics Inc | ARQT | Shares | $3.4M | 144K |
| Ouster Inc | OUST | Shares | $3.4M | 185K |
| Everquote Inc | EVER | Shares | $3.3M | 217K |
| Baker Hughes Company | BKR | Shares | $3.3M | 55K |
| Diodes Inc | DIOD | Shares | $3.3M | 49K |
| Salesforce Inc | CRM | Shares | $3.3M | 18K |
| Ocular Therapeutix Inc | OCUL | Shares | $3.3M | 393K |
| Apyx Medical Corporation | APYX | Shares | $3.3M | 901K |
| Liquidity Svcs Inc | LQDT | Shares | $3.3M | 108K |
| Bgc Group Inc | BGC | Shares | $3.3M | 337K |
| Dollar Tree Inc | DLTR | Shares | $3.2M | 30K |
| Concentra Group Holdings Paren | CON | Shares | $3.2M | 150K |
| Pegasystems Inc | PEGA | Shares | $3.2M | 74K |
| Guidewire Software Inc | GWRE | Shares | $3.2M | 21K |
| Riskified Ltd | Shares | $3.1M | 803K | |
| Gentherm Inc | THRM | Shares | $3.1M | 113K |
| Columbus Mckinnon Corp N Y | CMCO | Shares | $3.1M | 212K |
| Docebo Inc | DCBO | Shares | $3.0M | 172K |
| 908 Devices Inc | MASS | Shares | $3.0M | 491K |
| Varex Imaging Corp | VREX | Shares | $3.0M | 280K |
| Liquidia Corporation | LQDA | Shares | $3.0M | 78K |
| Stereotaxis Inc | STXS | Shares | $2.9M | 1.6M |
| Johnson Outdoors Inc | JOUT | Shares | $2.9M | 63K |
| Neuropace Inc | NPCE | Shares | $2.9M | 218K |
| Freightcar Amer Inc | RAIL | Shares | $2.8M | 352K |
| Infusystem Hldgs Inc | INFU | Shares | $2.8M | 299K |
| Axsome Therapeutics Inc. | AXSM | Shares | $2.8M | 16K |
| Arlo Technologies Inc | ARLO | Shares | $2.7M | 193K |
| Identiv Inc | INVE | Shares | $2.7M | 737K |
| Si Bone Inc | SIBN | Shares | $2.7M | 212K |
| Trimble Inc | TRMB | Shares | $2.7M | 41K |
| Evercore Inc | EVR | Shares | $2.7M | 9K |
| Expro Group Holdings Nv | Shares | $2.6M | 150K | |
| Carecloud Inc | CCLD | Shares | $2.5M | 698K |
| Matador Res Co | MTDR | Shares | $2.5M | 40K |
| Novanta Inc | NOVT | Shares | $2.4M | 21K |
| Onterris Inc | ONT | Shares | $2.4M | 111K |
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.