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Institutional Investment Manager
ESSEX INVESTMENT MANAGEMENT CO LLC
ESSEX INVESTMENT MANAGEMENT CO LLC (CIK: 0000201772) incorporated in Delaware, located at 125 High Street, Boston, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q4)
Portfolio Summary: 332 holdings with a total value of $686,664,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 GRNHNTR ENRGY 15,662 11,000 0.00%
2 HALCON RESOURCES CORP 12,538 22,000 0.00%
3 GIGPEAK INC 32,413 39,000 0.01%
4 INTEST CORP 10,856 46,000 0.01%
5 STR HOLDINGS INC 34,448 47,000 0.01%
6 DYNASIL CORP AMER 33,061 48,000 0.01%
7 Ipass Inc 35,396 48,000 0.01%
8 Mad Catz Interactive 115,867 49,000 0.01%
9 LANTRONIX INC 27,491 52,000 0.01%
10 EXCO RESOURCES INC 23,808 52,000 0.01%
11 AEHR TEST SYSTEMS 21,662 55,000 0.01%
12 CHEMBIO DIAGNOSTICS INC COM NEW 14,388 56,000 0.01%
13 SUMMER INFANT INC 18,021 59,000 0.01%
14 SEMILEDS CORP 54,000 59,000 0.01%
15 BIOLASE INC 23,803 63,000 0.01%
16 SIMULATIONS PLUS INC 11,584 77,000 0.01%
17 UR ENERGY INC 100,000 87,000 0.01%
18 FORBES ENERGY SERVICES LTD 87,298 106,000 0.02%
19 FORD MTR CO DEL 10,437 162,000 0.02%
20 ARUBA NETWORKS INC 11,118 202,000 0.03%
21 DIGITALGLOBE INC 6,622 205,000 0.03%
22 JOY GLOBAL INCORPORATED 4,423 206,000 0.03%
23 UNITED MICROELECTRONICS CORP 91,400 207,000 0.03%
24 AVAGO TECHNOLOGIES LTD SHS 2,100 211,000 0.03%
25 KEYW HLDG CORP 20,954 218,000 0.03%
26 EBAY INC 3,884 218,000 0.03%
27 SEATTLE GENETICS INC 6,991 225,000 0.03%
28 E M C CORP MASS COM 7,641 227,000 0.03%
29 TRIPADVISOR INC 3,071 229,000 0.03%
30 MOELIS & CO 6,712 234,000 0.03%
31 CONCHO RESOURCES 2,393 239,000 0.03%
32 COPART INC 6,600 241,000 0.04%
33 DEALERTRACK TECHNOLOGIES INC 5,513 244,000 0.04%
34 SQUARE INC A 10,108 250,000 0.04%
35 COMCAST CORP NEW 4,333 251,000 0.04%
36 Heartware International, Inc. 3,454 254,000 0.04%
37 DUKE ENERGY CORP NEW 3,081 257,000 0.04%
38 SILVER SPRING NETWORKS INC COM 30,569 258,000 0.04%
39 ROCKWELL MED INC 25,572 263,000 0.04%
40 FLOWSERVE CORP 4,412 264,000 0.04%
41 ROYAL DUTCH SHELL PLC 4,020 269,000 0.04%
42 FIREEYE INC 8,556 270,000 0.04%
43 BRUKER CORP 13,828 271,000 0.04%
44 UNITED STATES STL CORP NEW 10,415 278,000 0.04%
45 AUTOMATIC DATA PROCESSING IN 3,334 278,000 0.04%
46 ALLSTATE CORP 4,033 283,000 0.04%
47 3M CO 1,742 286,000 0.04%
48 Lifepoint Hospitals Inc 6,929 286,000 0.04%
49 EXAMWORKS GROUP INC COM 7,000 291,000 0.04%
50 HOMEAWAY INC 9,825 293,000 0.04%
Page 1 of 7

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-15-000179, filed 2015.01.27).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.