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Latest ESSEX INVESTMENT MANAGEMENT CO LLC Stock Portfolio

$631Million– No. of Holdings #305

ESSEX INVESTMENT MANAGEMENT CO LLC Performance:
2026 Q1: 0.16%YTD: 0.16%2025: 32.73%
Performance for 2026 Q1 is 0.16%, and YTD is 0.16%, and 2025 is 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 2026-05-11, the fund reported it's updated stock portfolio. In the 13F Holdings report, ESSEX INVESTMENT MANAGEMENT CO LLC reported an equity portfolio of $631.7 Millions as of 31 Mar, 2026.

The top stock holdings of ESSEX INVESTMENT MANAGEMENT CO LLC are TSEM, LINC, STRL. The fund has invested 3.2% of it's portfolio in TOWER SEMICONDUCTOR LTD and 2.3% of portfolio in LINCOLN EDL SVCS CORP.

The fund managers got completely rid off BETA BIONICS INC, UNIVERSAL INS HLDGS INC (UVE) and ANGIODYNAMICS INC (ANGO) stocks. They significantly reduced their stock positions in SANDOZ GROUP AG, AMERICAN EXPRESS CO (AXP) and VERIZON COMMUNICATIONS INC (VZ). ESSEX INVESTMENT MANAGEMENT CO LLC opened new stock positions in NOVOCURE LTD (NVCR), SYNDAX PHARMACEUTICALS INC (SNDX) and MISTRAS GROUP INC (MG). The fund showed a lot of confidence in some stocks as they added substantially to RAPID MICRO BIOSYSTEMS INC (RPID), CODA OCTOPUS GROUP INC (CODA) and LIGHTPATH TECHNOLOGIES INC (LPTH).
ESSEX INVESTMENT MANAGEMENT CO LLC Equity Portfolio Value
Last Reported on: 11 May, 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 0.16% in the last quarter. In trailing 12 months, it's portfolio return was 45.72%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
novocure ltd4,930,830
syndax pharmaceuticals inc4,648,290
mistras group inc3,969,420
mitek sys inc3,720,630
marvell technology inc3,585,910
agios pharmaceuticals inc3,490,480
sophia genetics sa3,429,400
diodes inc3,335,800
New stocks bought by ESSEX INVESTMENT MANAGEMENT CO LLC

Additions

Ticker% Inc.
rapid micro biosystems inc1,318
coda octopus group inc713
lightpath technologies inc429
brainsway ltd103
docebo inc70.66
intellicheck mobilisa inc67.09
freightos ltd61.29
contemporary amperex techno57.64
Additions to existing portfolio by ESSEX INVESTMENT MANAGEMENT CO LLC

Reductions

Ticker% Reduced
sandoz group ag-76.85
american express co-69.26
verizon communications inc-50.9
valero energy corp-50.21
one stop sys inc-48.77
argan inc-41.73
pepsico inc-41.63
tower semiconductor ltd-39.82
ESSEX INVESTMENT MANAGEMENT CO LLC reduced stake in above stock

Sold off

Ticker$ Sold
castellum inc-1,909,390
ceragon networks ltd-2,922,560
southland hldgs inc-1,579,400
angiodynamics inc-4,629,380
journey med corp-2,667,480
profound med corp-2,436,580
great lakes dredge & dock corp-3,962,060
legalzoom com inc-2,659,820
ESSEX INVESTMENT MANAGEMENT CO LLC got rid off the above stocks

Sector Distribution

ESSEX INVESTMENT MANAGEMENT CO LLC has about 22.8% of it's holdings in Industrials sector.

  • Industrials
  • Technology
  • Healthcare
  • Others
  • Financial Services
  • Energy
  • Communication Services
  • Consumer Defensive
  • Consumer Cyclical
Sector%
Industrials22.8
Technology20
Healthcare18.5
Others16.9
Financial Services4.5
Energy3.9
Communication Services3.7
Consumer Defensive3.5
Consumer Cyclical3.5
1.9

Market Cap. Distribution

ESSEX INVESTMENT MANAGEMENT CO LLC has about 22.7% of it's portfolio invested in the large-cap and mega-cap stocks.

  • SMALL-CAP
  • MID-CAP
  • LARGE-CAP
  • UNALLOCATED
  • MICRO-CAP
  • MEGA-CAP
Category%
SMALL-CAP29.1
MID-CAP22.3
LARGE-CAP17.7
UNALLOCATED17.3
MICRO-CAP8.3
MEGA-CAP5

Stocks belong to which Index?

About 60% 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 200049.7
Others40
S&P 50010.3
Top 5 Winners (%)%
AMPX
amprius technologies inc
105.8 %
LYB
lyondellbasell industries nv
86.0 %
EQNR
equinor asa
78.6 %
RFIL
rf inds ltd
67.7 %
LINC
lincoln edl svcs corp
65.5 %
Top 5 Winners ($)$
TSEM
tower semiconductor ltd
9.0 M
LINC
lincoln edl svcs corp
6.2 M
AGX
argan inc
5.1 M
AMPX
amprius technologies inc
4.3 M
STRL
sterling infrastructure inc
3.9 M
Top 5 Losers (%)%
LAW
cs disco inc
-50.5 %
LNSR
lensar inc
-48.8 %
ANGI
angi inc
-47.0 %
UPWK
upwork inc
-44.5 %
BLND
blend labs inc
-43.9 %
Top 5 Losers ($)$
exzeo group inc
-2.8 M
BWAY
brainsway ltd
-2.6 M
EVER
everquote inc
-2.6 M
AVPT
avepoint inc
-2.2 M
HCI
hci group inc
-2.2 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 305 stocks in it's portfolio. About 19.9% of the portfolio is in top 10 stocks. proved to be the most loss making stock for the portfolio. TSEM was the most profitable stock for ESSEX INVESTMENT MANAGEMENT CO LLC last quarter.

Last Reported on: 11 May, 2026
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions