ESSEX INVESTMENT MANAGEMENT CO LLC
Sector Allocation
- Technology35.2%$237.3M
- Healthcare22.8%$153.9M
- Industrials20.2%$136.5M
- Consumer Discretionary5.7%$38.1M
- Financials5.1%$34.1M
- Energy4.3%$29.3M
- Materials2.7%$18.2M
- Consumer Staples2.2%$14.8M
- Other1.1%$7.5M
- Communication Services0.5%$3.5M
AUM History
13fpro.ai/research/fund/essex-investment-management-co-llc-201772
Conviction and streaks
Diversifying · top 10 = 17.2%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q3 2026
TSEM
$20.8MKNSA
$15.1MLGND
$12.2MADPT
$11.6MAAPL
$10.4MCECO
$10.1MHCI
$9.4MDRS
$8.9MMIRM
$8.7MCOHU
$8.7MAVPT
$7.8MSTRL
$7.6MTVTX
$7.6MBWAY
$7.6MGEV
$7.6MNUVB
$7.5MWERN
$7.5MMSFT
$7.4MFEIM
$7.3MBDSX
$7.0M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/essex-investment-management-co-llc-201772
ESSEX INVESTMENT MANAGEMENT CO LLC 13F holdings — Q3 2026
$674.7M portfolio (-11.6% QoQ) · 301 holdings · Q3 2026 13F · top 10 are 17% of the stock portfolio
$20.8M
3.1% of stocks
-13%This quarter-10.8%Since filed8+ qtrsHeld$15.1M
2.2% of stocks
-16%This quarter-8.2%Since filed8+ qtrsHeld$12.2M
1.8% of stocks
-11%This quarter+3.7%Since filed8+ qtrsHeld$11.6M
1.7% of stocks
-15%This quarter+9.7%Since filed8+ qtrsHeldAIQuality41.8#2,035Est. buyEstimated buy price is Pro: unlock with a free trialTrimmed 4 qtrs in a row$10.4M
1.5% of stocks
-4%This quarter+0.3%Since filed8+ qtrsHeld$10.1M
1.5% of stocks
-3%This quarter-16.9%Since filed8+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 2 qtrs in a row$9.4M
1.4% of stocks
-4%This quarter+1.7%Since filed8+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 4 qtrs in a row$8.9M
1.3% of stocks
-3%This quarter+1.9%Since filed8+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 2 qtrs in a row$8.7M
1.3% of stocks
-4%This quarter+1.3%Since filed6 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 4 qtrs in a row$8.7M
1.3% of stocks
-3%This quarter-9.3%Since filed6 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 2 qtrs in a row
All holdings — ESSEX INVESTMENT MANAGEMENT CO LLC (Q3 2026)
301 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | AvePoint, Inc. | Technology | $7.8M | 1.1% | 552K | -3% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | STERLING INFRASTRUCTURE, INC. | Industrials | $7.6M | 1.1% | 16K | -4% | 8+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | Travere Therapeutics, Inc. | Healthcare | $7.6M | 1.1% | 129K | -3% | 5 qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | Brainsway Ltd.adr | Healthcare | $7.6M | 1.1% | 575K | -3% | 8+ qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | GE Vernova Inc. | Industrials | $7.6M | 1.1% | 7,978 | -4% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | Nuvation Bio Inc. | Healthcare | $7.5M | 1.1% | 1.34M | +100% | 2 qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | WERNER ENTERPRISES INC | Industrials | $7.5M | 1.1% | 221K | -5% | 2 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | MICROSOFT CORP | Technology | $7.4M | 1.1% | 14K | -8% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | FREQUENCY ELECTRONICS INC | Technology | $7.3M | 1.1% | 86K | -3% | 6 qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | BIODESIX INC | Healthcare | $7.0M | 1.0% | 235K | -3% | 3 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | AGNICO EAGLE MINES LTD | Materials | $6.8M | 1.0% | 37K | -3% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | NovoCure Ltd | Healthcare | $6.8M | 1.0% | 424K | -4% | 3 qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | Xeris Biopharma Holdings, Inc. | Healthcare | $6.6M | 1.0% | 693K | -3% | 8+ qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | SEMTECH CORP | Technology | $6.6M | 1.0% | 37K | -3% | 7 qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | Marvell Technology, Inc. | Technology | $6.6M | 1.0% | 25K | -4% | 3 qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | $GHM | GRAHAM CORP | Industrials | $6.5M | 1.0% | 75K | -19% | |||
| 27 | $AMZN | AMAZON COM INC | Consumer Discretionary | $6.4M | 1.0% | 26K | -4% | |||
| 28 | $LTRX | LANTRONIX INC | Technology | $6.4M | 0.9% | 890K | +34% | |||
| 29 | $OII | OCEANEERING INTERNATIONAL INC | Energy | $6.4M | 0.9% | 146K | -3% | |||
| 30 | $GS | GOLDMAN SACHS GROUP INC | Financials | $6.4M | 0.9% | 7,069 | -6% | |||
| 31 | $AIP | Arteris, Inc. | Technology | $6.4M | 0.9% | 269K | -3% | |||
| 32 | $KTOS | KRATOS DEFENSE & SECURITY SOLUTIONS, INC. | Industrials | $6.3M | 0.9% | 148K | -3% | |||
| 33 | $OUST | Ouster, Inc. | Industrials | $6.2M | 0.9% | 153K | -32% | |||
| 34 | $ASML | ASML HOLDING NV | Technology | $6.1M | 0.9% | 3,394 | -4% | |||
| 35 | $LINC | LINCOLN EDUCATIONAL SERVICES CORP | Consumer Discretionary | $6.1M | 0.9% | 278K | -18% | |||
| 36 | $AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | Technology | $6.0M | 0.9% | 205K | -7% | |||
| 37 | $BXC | BlueLinx Holdings Inc. | Consumer Discretionary | $6.0M | 0.9% | 84K | -3% | |||
| 38 | $LYTS | LSI INDUSTRIES INC | Technology | $6.0M | 0.9% | 288K | -3% | |||
| 39 | $RSKD | RISKIFIED LTD. | Industrials | $5.9M | 0.9% | 746K | -3% | |||
| 40 | $PGEN | PRECIGEN, INC. | Healthcare | $5.9M | 0.9% | 683K | -3% | |||
| 41 | $AGX | ARGAN INC | Industrials | $5.7M | 0.8% | 15K | -3% | |||
| 42 | $MASS | 908 Devices Inc. | Technology | $5.6M | 0.8% | 456K | -3% | |||
| 43 | $XMTR | Xometry, Inc. | Industrials | $5.6M | 0.8% | 54K | -3% | |||
| 44 | $SOPH | SOPHiA GENETICS SA | Technology | $5.4M | 0.8% | 643K | -3% | |||
| 45 | $AMBA | AMBARELLA INC | Technology | $5.4M | 0.8% | 77K | -3% | |||
| 46 | $WLDN | Willdan Group, Inc. | Technology | $5.4M | 0.8% | 73K | -3% | |||
| 47 | $PATK | PATRICK INDUSTRIES INC | Industrials | $5.4M | 0.8% | 79K | -5% | |||
| 48 | $THRM | Gentherm Inc | Industrials | $5.3M | 0.8% | 158K | +47% | |||
| 49 | $MG | Mistras Group, Inc. | Technology | $5.2M | 0.8% | 249K | -3% | |||
| 50 | $FET | FORUM ENERGY TECHNOLOGIES, INC. | Energy | $5.2M | 0.8% | 65K | -3% | |||
| 51 | $RDVT | Red Violet, Inc. | Technology | $5.0M | 0.8% | 64K | -23% | |||
| 52 | $WMS | ADVANCED DRAINAGE SYSTEMS, INC. | Materials | $5.0M | 0.7% | 39K | -3% | |||
| 53 | $SIBN | SI-BONE, Inc. | Healthcare | $4.9M | 0.7% | 263K | -3% | |||
| 54 | $CON | Concentra Group Holdings Parent, Inc. | Healthcare | $4.9M | 0.7% | 142K | -5% | |||
| 55 | $JAZZ | Jazz Pharmaceuticals plc | Healthcare | $4.8M | 0.7% | 21K | -4% | |||
| 56 | $INSM | INSMED Inc | Healthcare | $4.7M | 0.7% | 41K | -4% | |||
| 57 | $DIOD | DIODES INC /DEL/ | Technology | $4.4M | 0.7% | 45K | -3% | |||
| 58 | $MITK | MITEK SYSTEMS INC | Technology | $4.4M | 0.7% | 256K | -3% | |||
| 59 | $III | Information Services Group Inc. | Technology | $4.3M | 0.6% | 784K | -3% | |||
| 60 | $CMCO | COLUMBUS MCKINNON CORP | Industrials | $4.3M | 0.6% | 270K | -3% | |||
| 61 | $LQDT | LIQUIDITY SERVICES INC | Industrials | $4.3M | 0.6% | 100K | -3% | |||
| 62 | $WTS | WATTS WATER TECHNOLOGIES INC | Industrials | $4.2M | 0.6% | 12K | New | |||
| 63 | $CRWD | CrowdStrike Holdings, Inc. | Technology | $4.2M | 0.6% | 16K | +284% | |||
| 64 | $NOVT | NOVANTA INC | Technology | $4.2M | 0.6% | 30K | +50% | |||
| 65 | $TTI | TETRA TECHNOLOGIES INC | Energy | $4.2M | 0.6% | 718K | -3% | |||
| 66 | $AMTB | Amerant Bancorp Inc. | Financials | $4.2M | 0.6% | 146K | -3% | |||
| 67 | $ECG | Everus Construction Group, Inc. | Industrials | $4.1M | 0.6% | 35K | -3% | |||
| 68 | $PKE | PARK AEROSPACE CORP | Industrials | $4.1M | 0.6% | 139K | -3% | |||
| 69 | $IBEX | IBEX Ltd | Technology | $4.1M | 0.6% | 95K | -3% | |||
| 70 | $TILE | INTERFACE INC | Consumer Discretionary | $4.1M | 0.6% | 119K | -3% | |||
| 71 | $MAMA | Mama's Creations, Inc. | Consumer Staples | $4.1M | 0.6% | 317K | -3% | |||
| 72 | $GFF | GRIFFON CORP | Industrials | $4.0M | 0.6% | 43K | -3% | |||
| 73 | $MIR | Mirion Technologies, Inc. | Technology | $4.0M | 0.6% | 285K | -3% | |||
| 74 | — | EVERPURE INC - COM | — | $4.0M | 0.6% | 31K | -5% | |||
| 75 | $JOUT | JOHNSON OUTDOORS INC | Consumer Discretionary | $4.0M | 0.6% | 91K | -3% | |||
| 76 | $ACOG | Alpha Cognition Inc. | Healthcare | $3.8M | 0.6% | 423K | New | |||
| 77 | $XZO | Exzeo Group, Inc. | Technology | $3.7M | 0.6% | 256K | -5% | |||
| 78 | $NVDA | NVIDIA CORP | Technology | $3.7M | 0.6% | 16K | New | |||
| 79 | $GMED | GLOBUS MEDICAL INC | Healthcare | $3.7M | 0.6% | 49K | -0.8% | |||
| 80 | $DCBO | Docebo Inc. | Technology | $3.7M | 0.6% | 160K | -3% | |||
| 81 | $ORN | Orion Group Holdings Inc | Industrials | $3.7M | 0.5% | 429K | -3% | |||
| 82 | $LGIH | LGI Homes, Inc. | Industrials | $3.7M | 0.5% | 79K | New | |||
| 83 | $DAKT | DAKTRONICS INC /SD/ | Consumer Discretionary | $3.6M | 0.5% | 210K | -3% | |||
| 84 | $ZETA | Zeta Global Holdings Corp. | Technology | $3.6M | 0.5% | 114K | -3% | |||
| 85 | $BGC | BGC Group, Inc. | Financials | $3.6M | 0.5% | 311K | -3% | |||
| 86 | $OCUL | OCULAR THERAPEUTIX, INC | Healthcare | $3.6M | 0.5% | 467K | -3% | |||
| 87 | $ARQT | Arcutis Biotherapeutics, Inc. | Healthcare | $3.5M | 0.5% | 133K | -3% | |||
| 88 | $IA | INNOVATIVE SOLUTIONS & SUPPORT INC | Technology | $3.4M | 0.5% | 185K | New | |||
| 89 | $FENC | FENNEC PHARMACEUTICALS INC. | Healthcare | $3.4M | 0.5% | 319K | New | |||
| 90 | $BMI | BADGER METER INC | Technology | $3.4M | 0.5% | 27K | -2% | |||
| 91 | $CODA | Coda Octopus Group, Inc. | Technology | $3.4M | 0.5% | 313K | -3% | |||
| 92 | $BWXT | BWX Technologies, Inc. | Industrials | $3.4M | 0.5% | 24K | -4% | |||
| 93 | $OCFC | OCEANFIRST FINANCIAL CORP | Financials | $3.3M | 0.5% | 199K | New | |||
| 94 | $DLTR | DOLLAR TREE, INC. | Consumer Staples | $3.2M | 0.5% | 28K | -4% | |||
| 95 | $LGCY | Legacy Education Inc. | Consumer Discretionary | $3.1M | 0.5% | 321K | -3% | |||
| 96 | $SFM | Sprouts Farmers Market, Inc. | Consumer Staples | $3.0M | 0.5% | 46K | -17% | |||
| 97 | $GWRE | Guidewire Software, Inc. | Technology | $2.9M | 0.4% | 20K | -4% | |||
| 98 | $AXSM | Axsome Therapeutics, Inc. | Healthcare | $2.9M | 0.4% | 16K | -4% | |||
| 99 | $LPTH | LIGHTPATH TECHNOLOGIES INC | Technology | $2.9M | 0.4% | 277K | -3% | |||
| 100 | $BKR | Baker Hughes Co | Energy | $2.9M | 0.4% | 52K | -4% | |||
| 101 | $TNXP | Tonix Pharmaceuticals Holding Corp. | Healthcare | $2.8M | 0.4% | 292K | +77% | |||
| 102 | $NPCE | NeuroPace Inc | Healthcare | $2.8M | 0.4% | 202K | -3% | |||
| 103 | $REAL | TheRealReal, Inc. | Consumer Discretionary | $2.7M | 0.4% | 311K | +35% | |||
| 104 | $APYX | Apyx Medical Corp | Healthcare | $2.7M | 0.4% | 1.10M | -3% | |||
| 105 | $ESOA | Energy Services of America CORP | Energy | $2.7M | 0.4% | 242K | +829% | |||
| 106 | $TEM | Tempus AI, Inc. | Technology | $2.7M | 0.4% | 33K | -4% | |||
| 107 | $BKSY | BlackSky Technology Inc. | Technology | $2.7M | 0.4% | 126K | -3% | |||
| 108 | $AMPX | Amprius Technologies, Inc. | Technology | $2.7M | 0.4% | 277K | -3% | |||
| 109 | $KRNT | Kornit Digital Ltd. | Industrials | $2.4M | 0.3% | 142K | New | |||
| 110 | $NNBR | NN INC | Industrials | $2.4M | 0.3% | 644K | New | |||
| 111 | $FOCL | EDAP TMS SA | Healthcare | $2.3M | 0.3% | 508K | +248% | |||
| 112 | $RAIL | FreightCar America, Inc. | Industrials | $2.2M | 0.3% | 327K | -3% | |||
| 113 | $ARLO | Arlo Technologies, Inc. | Technology | $2.2M | 0.3% | 178K | -3% | |||
| 114 | $LQDA | Liquidia Corp | Healthcare | $2.2M | 0.3% | 72K | -3% | |||
| 115 | $XPRO.R1575828 | EXPRO GROUP HOLDINGS N.V. | Energy | $2.2M | 0.3% | 138K | -4% | |||
| 116 | $RVSB | RIVERVIEW BANCORP INC | Financials | $2.2M | 0.3% | 362K | -3% | |||
| 117 | $EVR | Evercore Inc. | Financials | $2.1M | 0.3% | 8,293 | -3% | |||
| 118 | $KVHI | KVH INDUSTRIES INC \DE\ | Communication Services | $2.0M | 0.3% | 284K | -3% | |||
| 119 | $MTDR | Matador Resources Co | Energy | $1.9M | 0.3% | 37K | -0.9% | |||
| 120 | $TRMB | TRIMBLE INC. | Technology | $1.9M | 0.3% | 33K | -31% | |||
| 121 | $KBR | KBR, INC. | Industrials | $1.9M | 0.3% | 53K | New | |||
| 122 | $PAY | Paymentus Holdings, Inc. | Industrials | $1.8M | 0.3% | 60K | -34% | |||
| 123 | $LNG | Cheniere Energy, Inc. | Energy | $1.8M | 0.3% | 6,639 | -17% | |||
| 124 | $VLTO | Veralto Corp | Technology | $1.4M | 0.2% | 15K | +112% | |||
| 125 | $MTSI | MACOM Technology Solutions Holdings, Inc. | Technology | $1.4M | 0.2% | 4,919 | — | |||
| 126 | $CURI | CuriosityStream Inc. | Communication Services | $1.2M | 0.2% | 416K | -30% | |||
| 127 | $CGNX | COGNEX CORP | Technology | $1.2M | 0.2% | 20K | — | |||
| 128 | $VLO | VALERO ENERGY CORP/TX | Energy | $1.2M | 0.2% | 2,972 | -5% | |||
| 129 | $CARR | CARRIER GLOBAL Corp | Industrials | $1.1M | 0.2% | 20K | — | |||
| 130 | — | ALFEN NV - COM | — | $1.1M | 0.2% | 81K | — | |||
| 131 | $MWH | SOLV Energy, Inc. | Industrials | $1.0M | 0.1% | 43K | +41% | |||
| 132 | $IOT | Samsara Inc. | Technology | $1.0M | 0.1% | 27K | — | |||
| 133 | $LNN | LINDSAY CORP | Industrials | $1.0M | 0.1% | 9,004 | — | |||
| 134 | $PAYX | PAYCHEX INC | Technology | $993K | 0.1% | 10K | -8% | |||
| 135 | $CTVA | Corteva, Inc. | Consumer Staples | $989K | 0.1% | 13K | — | |||
| 136 | — | ISHARES TR - ETF | — | $983K | 0.1% | 2,754 | -62% | |||
| 137 | $PWR | QUANTA SERVICES, INC. | Industrials | $953K | 0.1% | 1,483 | -6% | |||
| 138 | $ACMR | ACM Research, Inc. | Technology | $952K | 0.1% | 12K | — | |||
| 139 | $CRGO | Freightos Ltd | Industrials | $880K | 0.1% | 926K | -3% | |||
| 140 | $JPM | JPMORGAN CHASE & CO | Financials | $875K | 0.1% | 2,646 | -3% | |||
| 141 | $KO | COCA COLA CO | Consumer Staples | $865K | 0.1% | 10K | -5% | |||
| 142 | $B | BARRICK MINING CORP | Materials | $855K | 0.1% | 21K | -8% | |||
| 143 | $AJG | Arthur J. Gallagher & Co. | Financials | $855K | 0.1% | 3,746 | — | |||
| 144 | $RIVN | Rivian Automotive, Inc. / DE | Consumer Discretionary | $845K | 0.1% | 57K | — | |||
| 145 | $PG | PROCTER & GAMBLE Co | Consumer Staples | $838K | 0.1% | 5,771 | -1% | |||
| 146 | $NXT | Nextpower Inc. | Technology | $799K | 0.1% | 10K | — | |||
| 147 | $DE | DEERE & CO | Industrials | $796K | 0.1% | 1,186 | New | |||
| 148 | $SEDG | SOLAREDGE TECHNOLOGIES, INC. | Technology | $771K | 0.1% | 24K | +101% | |||
| 149 | — | YASKAWA ELEC CORP - COM | — | $769K | 0.1% | 26K | — | |||
| 150 | $NEE | NEXTERA ENERGY INC | Utilities | $752K | 0.1% | 9,923 | — |
What changed in Q3 2026
Against the previous quarter's 13F: 19 new, 18 added to, 143 trimmed, 23 sold out. Share-count changes; largest moves by dollar size first.
New positions (19)
$ACOGAlpha Cognition Inc.$3.8M
first bought this quarter
$NVDANVIDIA CORP$3.7M
first bought this quarter
$LGIHLGI Homes, Inc.$3.7M
first bought this quarter
$IAINNOVATIVE SOLUTIONS & SUPPORT INC$3.4M
first bought this quarter
$FENCFENNEC PHARMACEUTICALS INC.$3.4M
first bought this quarter
$OCFCOCEANFIRST FINANCIAL CORP$3.3M
first bought this quarter
+13 more in the Excel export
Added to (18)
now $7.5M · held 2 qtrs, 2 adds in a row
$CRWDCrowdStrike Holdings, Inc.+284%
now $4.2M · held 2 qtrs
$ESOAEnergy Services of America CORP+829%
now $2.7M · held 8+ qtrs
$THRMGentherm Inc+47%
now $5.3M · held 4 qtrs
$LTRXLANTRONIX INC+34%
now $6.4M · held 3 qtrs, 3 adds in a row
$FOCLEDAP TMS SA+248%
now $2.3M · held 2 qtrs, 2 adds in a row
+12 more in the Excel export
Trimmed (143)
now $20.8M · held 8+ qtrs, 4 trims in a row
$OUSTOuster, Inc.-32%
now $6.2M · held 8+ qtrs
now $15.1M · held 8+ qtrs, 2 trims in a row
now $11.6M · held 8+ qtrs, 4 trims in a row
- ISHARES TR - ETF-62%
now $983K
$GHMGRAHAM CORP-19%
now $6.5M · held 8+ qtrs, 4 trims in a row
+137 more in the Excel export
Holdings by quarter
Every 13F ESSEX INVESTMENT MANAGEMENT CO LLC has filed, 41 earlier quarters. Pick one to see what it held then.
Is it too late to follow ESSEX INVESTMENT MANAGEMENT?
Q3 2026 13F filed with the SEC on Oct 19, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of ESSEX INVESTMENT MANAGEMENT's top 20 holdings: 56/100 (our AI quality score, weighted by position size; 17 of the 20 are scored)
Top 10 since filing
-3.4%
Value-weighted move of the 10 largest stock positions
Turnover
7%
Last quarter; 43% over the last 4
Top 10 weight
17%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
76%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q4 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
ESSEX INVESTMENT MANAGEMENT CO LLC disclosed 301 positions worth $674.7M in its Form 13F-HR for Q3 2026, led by $TSEM (TOWER SEMICONDUCTOR LTD) at 3.1% of the equity portfolio, followed by $KNSA and $LGND. During the quarter the fund opened 19 new positions and exited 23 — including a new stake in $ACOG and a full exit from $CXDO. The portfolio is most concentrated in Technology (35.2% of disclosed assets). All figures are sourced directly from ESSEX INVESTMENT MANAGEMENT CO LLC’s Form 13F-HR filing with the SEC under CIK 201772.
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