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Latest ESSEX INVESTMENT MANAGEMENT CO LLC Stock Portfolio

$674Million | No. of Holdings #301

ESSEX INVESTMENT MANAGEMENT CO LLC Performance

2026 Q3-8.54%
YTD+12.52%
2025+32.73%

About ESSEX INVESTMENT MANAGEMENT CO LLC and 13F Hedge Fund Stock Holdings

ESSEX INVESTMENT MANAGEMENT CO LLC is a hedge fund based in Boston, MA. On 2026-10-19, the fund reported it's updated stock portfolio. In the 13F Holdings report, ESSEX INVESTMENT MANAGEMENT CO LLC reported an equity portfolio of $674.7 Millions as of 30 Sep, 2026. <br><br> The top stock holdings of ESSEX INVESTMENT MANAGEMENT CO LLC are TSEM, , LGND. The fund has invested 3.1% of it's portfolio in TOWER SEMICONDUCTOR LTD and 2.2% of portfolio in KINIKSA PHARMACEUTICALS INTL P. <br><br> The fund managers got completely rid off CREXENDO INC (CXDO), OCTAVE SPECIALTY GROUP INC (AMBC) and BRC INC (BRCC) stocks. They significantly reduced their stock positions in XYLEM INC (XYL), INTUIT (INTU) and QNITY ELECTRONICS INC. ESSEX INVESTMENT MANAGEMENT CO LLC opened new stock positions in ALPHA COGNITION INC, NVIDIA CORPORATION (NVDA) and LGI HOMES INC (LGIH). The fund showed a lot of confidence in some stocks as they added substantially to WATTS WATER TECHNOLOGIES INC (WTS), ENERGY SERVICES OF AMER CORP (ESOA) and EDAP TMS S A (EDAP).
ESSEX INVESTMENT MANAGEMENT CO LLC Equity Portfolio Value
Last Reported on: 19 Oct, 2026
$674Million
  as of Oct 19, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC Annual Return Estimates Vs S&P 500

Our best estimate is that ESSEX INVESTMENT MANAGEMENT CO LLC made a return of -8.54% in the last quarter. In trailing 12 months, it's portfolio return was 16.04%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
alpha cognition inc3,805,720
nvidia corporation3,702,040
lgi homes inc3,663,710
innovative solutions & support3,433,110
fennec pharmaceuticals inc3,394,910
oceanfirst finl corp3,287,600
kornit digital ltd2,365,010
nn inc2,362,290
New stocks bought by ESSEX INVESTMENT MANAGEMENT CO LLC

Additions

Ticker% Inc.
watts water technologies inc239,600
energy services of amer corp829
edap tms s a247
cps technologies corp152
veralto corp111
solaredge technologies inc101
nuvation bio inc100
amphenol corp100
Additions to existing portfolio by ESSEX INVESTMENT MANAGEMENT CO LLC

Reductions

Ticker% Reduced
xylem inc-97.92
intuit-80.81
qnity electronics inc-70.31
on semiconductor corp-62.63
ishares tr-61.81
teradyne inc-44.68
eton pharmaceuticals inc-40.16
paymentus holdings inc-33.61
ESSEX INVESTMENT MANAGEMENT CO LLC reduced stake in above stock

Sold off

Ticker$ Sold
stereotaxis inc-2,617,780
blend labs inc-2,145,620
crexendo inc-5,310,230
octave specialty group inc-3,365,160
intellicheck mobilisa inc-2,001,470
identiv inc-1,220,780
rapid micro biosystems inc-627,464
brc inc-2,913,740
ESSEX INVESTMENT MANAGEMENT CO LLC got rid off the above stocks

Sector Distribution

ESSEX INVESTMENT MANAGEMENT CO LLC has about 23.6% of it's holdings in Technology sector.

  • Technology
  • Industrials
  • Others
  • Healthcare
  • Consumer Cyclical
  • Financial Services
  • Energy
  • Consumer Defensive
Sector%
Technology23.6
Industrials20.6
Others19.3
Healthcare18.6
Consumer Cyclical5
Financial Services4.5
Energy3.5
Consumer Defensive2.4
1.5

Market Cap. Distribution

ESSEX INVESTMENT MANAGEMENT CO LLC has about 19.9% of it's portfolio invested in the large-cap and mega-cap stocks.

  • SMALL-CAP
  • MID-CAP
  • UNALLOCATED
  • LARGE-CAP
  • MICRO-CAP
  • MEGA-CAP
Category%
SMALL-CAP28.2
MID-CAP24.9
UNALLOCATED19.3
LARGE-CAP13.5
MICRO-CAP7.3
MEGA-CAP6.4

Stocks belong to which Index?

About 58% of the stocks held by ESSEX INVESTMENT MANAGEMENT CO LLC either belong to S&P 500 or RUSSELL 2000 index.

  • RUSSELL 2000
  • Others
  • S&P 500
Index%
RUSSELL 200048.7
Others42
S&P 5009.3
Top 5 Winners (%)%
OESX
orion energy sys inc
147.6 %
PSTG
everpure inc
64.4 %
FET
forum energy technologies inc
60.2 %
ZETA
zeta global holdings corp
59.4 %
RSKD
riskified ltd
56.1 %
Top 5 Winners ($)$
ADPT
adaptive biotechnologies corp
3.3 M
kiniksa pharmaceuticals intl p
2.4 M
RSKD
riskified ltd
2.2 M
MSFT
microsoft corp
2.1 M
FET
forum energy technologies inc
2.0 M
Top 5 Losers (%)%
EYPT
eyepoint inc
-75.9 %
RFIL
rf inds ltd
-62.7 %
LQDA
liquidia corporation
-61.0 %
AMPG
amplitech group inc
-54.9 %
SNES
senestech inc
-54.6 %
Top 5 Losers ($)$
LINC
lincoln edl svcs corp
-8.7 M
AIP
arteris inc
-6.8 M
AGX
argan inc
-6.4 M
STRL
sterling infrastructure inc
-5.5 M
OUST
ouster inc
-4.2 M

ESSEX INVESTMENT MANAGEMENT CO LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of ESSEX INVESTMENT MANAGEMENT CO LLC

ESSEX INVESTMENT MANAGEMENT CO LLC has 301 stocks in it's portfolio. About 17.2% of the portfolio is in top 10 stocks. LINC proved to be the most loss making stock for the portfolio. ADPT was the most profitable stock for ESSEX INVESTMENT MANAGEMENT CO LLC last quarter.

$674.70MTotal Value
327Positions
19 Oct, 2026Last Reported
Current holdings of Current Stock Holdings of ESSEX INVESTMENT MANAGEMENT CO LLC, last reported on 19 Oct, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
AEM
Agnico Eagle Mines Ltd

Agnico Eagle Mines Ltd

AEM
ESSEX INVESTMENT MANAGEMENT CO LLC's holding in Agnico Eagle Mines Ltd over time
1.01%37,195
$6.82M
1.01%
decreased 3.29 percentreduced
AFK
Vaneck Etf Trust

Vaneck Etf Trust

AFK
ESSEX INVESTMENT MANAGEMENT CO LLC's holding in Vaneck Etf Trust over time
0%156
$17.8K
0%
unchanged 0 percentunchanged