Essex Investment Management CO LLC Portfolio Holdings

Essex Investment Management CO LLC

  • $567 Million
  • Q3 2025

Essex Investment Management CO LLC has filed its 13F form on November 06, 2025 for Q3 2025 where it was disclosed a total value porftolio of $567 Million distributed in 299 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Kratos Defense & Security Solutions, Inc. with a value of $22.3M, Sterling Construction CO Inc with a value of $15.5M, American Superconductor Corp with a value of $14.4M, Tower Semiconductor LTD with a value of $14.2M, and Insmed Inc with a value of $12.5M.

Examining the 13F form we can see an increase of $81.4M in the current position value, from $486M to 567M.

Essex Investment Management CO LLC is based out at Boston, MA

Below you can find more details about Essex Investment Management CO LLC portfolio as well as his latest detailed transactions.

Portfolio value $567 Million
Industrials: $171 Million
Technology: $145 Million
Healthcare: $111 Million
Financial Services: $33.1 Million
Communication Services: $25.9 Million
Consumer Defensive: $22.9 Million
Energy: $21.2 Million
Consumer Cyclical: $17.9 Million
Other: $16.5 Million

Stock Holdings Table

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$9.12B
$22.3 Million 3.93% of portfolio
244,055
Q3 2025 Reduced 30.34%
$10.3B
$15.5 Million 2.73% of portfolio
45,636
Q3 2025 Reduced 14.09%
$974M
$14.4 Million 2.55% of portfolio
245,581
Q3 2025 Reduced 29.03%
$10.9B
$14.2 Million 2.5% of portfolio
196,339
Q3 2025 Added 0.53%
$26.2B
$12.5 Million 2.21% of portfolio
87,077
Q3 2025 Added 31.25%
$1.63B
$11.6 Million 2.04% of portfolio
60,318
Q3 2025 Added 0.56%
$3.39B
$10.8 Million 1.91% of portfolio
61,142
Q3 2025 Added 0.55%
$2.01B
$9.55 Million 1.68% of portfolio
638,461
Q3 2025 Added 3.43%
$3.78T
$9.46 Million 1.67% of portfolio
18,265
Q3 2025 Reduced 1.19%
$4.3T
$9.23 Million 1.63% of portfolio
36,260
Q3 2025 Reduced 1.06%
$563M
$9.24 Million 1.63% of portfolio
397,359
Q3 2025 Added 3.33%
$2.63B
$8.32 Million 1.47% of portfolio
113,458
Q3 2025 Added 0.64%
$2.41B
$7.78 Million 1.37% of portfolio
518,232
Q3 2025 Added 1.08%
$623M
$7.77 Million 1.37% of portfolio
143,742
Q3 2025 Added 3.43%
$4.88B
$7.64 Million 1.35% of portfolio
28,298
Q3 2025 Added 3.59%
$1.22B
$7.63 Million 1.34% of portfolio
78,915
Q3 2025 Reduced 26.4%
$1.24B
$7.34 Million 1.29% of portfolio
697,387
Q3 2025 Reduced 31.99%
$4.98B
$7.22 Million 1.27% of portfolio
310,500
Q3 2025 Added 3.56%
$265B
$7.16 Million 1.26% of portfolio
8,993
Q3 2025 Reduced 1.71%
$3.37B
$7.04 Million 1.24% of portfolio
85,352
Q3 2025 Added 1.03%
$76.5B
$6.88 Million 1.21% of portfolio
40,843
Q3 2025 Reduced 1.09%
$495M
$6.45 Million 1.14% of portfolio
275,147
Q3 2025 Added 3.35%
$2.39T
$6.43 Million 1.13% of portfolio
29,285
Q3 2025 Reduced 1.06%
$986M
$6.08 Million 1.07% of portfolio
750,034
Q3 2025 Added 3.34%
$12.1B
$5.95 Million 1.05% of portfolio
42,898
Q3 2025 Added 345.74%
$641M
$5.51 Million 0.97% of portfolio
235,782
Q3 2025 Added 0.47%
$18.7B
$5.26 Million 0.93% of portfolio
22,901
Q3 2025 Reduced 1.56%
$16.3B
$5.1 Million 0.9% of portfolio
27,682
Q3 2025 Reduced 1.59%
$379M
$5.07 Million 0.89% of portfolio
232,458
Q3 2025 Reduced 28.56%
$165M
$4.89 Million 0.86% of portfolio
1,598,114
Q3 2025 Added 3.45%
$2.29B
$4.85 Million 0.85% of portfolio
46,874
Q3 2025 Added 1.78%
$151M
$4.76 Million 0.84% of portfolio
745,504
Q3 2025 Added 3.28%
$1.06B
$4.77 Million 0.84% of portfolio
181,244
Q3 2025 Added 3.33%
$262M
$4.63 Million 0.82% of portfolio
310,684
Q3 2025 Added 3.24%
$4.67B
$4.64 Million 0.82% of portfolio
80,660
Q3 2025 Reduced 1.6%
$875M
$4.61 Million 0.81% of portfolio
394,076
Q3 2025 Added 3.27%
$237B
$4.6 Million 0.81% of portfolio
19,422
Q3 2025 Reduced 0.38%
$988M
$4.47 Million 0.79% of portfolio
776,904
Q3 2025 Added 3.34%
$173M
$4.33 Million 0.76% of portfolio
493,949
Q3 2025 Added 3.48%
$444M
$4.07 Million 0.72% of portfolio
695,206
Q3 2025 Added 1.98%
$2.4B
$3.95 Million 0.7% of portfolio
159,261
Q3 2025 Added 58.73%
$1.07B
$3.92 Million 0.69% of portfolio
192,846
Q3 2025 Added 31.43%
$1.09B
$3.86 Million 0.68% of portfolio
240,269
Q3 2025 New
$2.21B
$3.87 Million 0.68% of portfolio
161,988
Q3 2025 New
$42.8B
$3.73 Million 0.66% of portfolio
12,434
Q3 2025 Reduced 1.64%
$405B
$3.75 Million 0.66% of portfolio
3,870
Q3 2025 Reduced 3.9%
$19.2B
$3.73 Million 0.66% of portfolio
45,669
Q3 2025 Added 168.75%
$1.5B
$3.7 Million 0.65% of portfolio
196,262
Q3 2025 Added 3.56%
$816M
$3.7 Million 0.65% of portfolio
308,809
Q3 2025 Added 3.39%

Summary

  • Portfolio
  • No. of Stocks 299
  • Current Value $567 Million
  • Prior Value $486 Million
  • Filing
  • Period Q3 2025
  • Filing Date November 06, 2025
  • Form Type 13F-HR
  • Activity in Q3 2025
  • New Purchases 30 stocks
  • Additional Purchases 95 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 56 stocks
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