Dark
Light
System
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 (2015Q4)
Portfolio Summary: 309 holdings with a total value of $639,766,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 WAGEWORKS INC COM 14,659 665,000 0.10%
102 DOLLAR TREE INC 8,734 674,000 0.11%
103 BARRACUDA NETWORKS INC 36,072 674,000 0.11%
104 ALNYLAM PHARMACEUTICALS INC 7,244 682,000 0.11%
105 HAIN CELESTIAL GROUP INC 17,054 689,000 0.11%
106 MYR GROUP INC DEL COM 33,610 693,000 0.11%
107 ILLINOIS TOOL WKS INC 7,500 695,000 0.11%
108 TELENAV INC COM 123,292 702,000 0.11%
109 MATTERSIGHT CORP COM 107,191 703,000 0.11%
110 TOWER SEMICONDUCTOR LTD 50,000 703,000 0.11%
111 PIONEER NAT RES CO 5,612 704,000 0.11%
112 SHIRE PLC 3,477 713,000 0.11%
113 Codexis Inc Com 170,272 720,000 0.11%
114 NEUROCRINE BIOSCIE COM USD0.001 12,811 725,000 0.11%
115 DESTINATION XL GROUP INC COM 132,717 733,000 0.11%
116 MITEK SYS INC 179,553 738,000 0.12%
117 AV HOMES INC 57,814 741,000 0.12%
118 BRIGHTCOVE INC COM 119,692 742,000 0.12%
119 MAXWELL TECHNOLOGIES INC 104,416 746,000 0.12%
120 EURONET WORLDWIDE INC 10,366 751,000 0.12%
121 CALGON CARBON CORP 43,901 757,000 0.12%
122 BIOAMBER INC 123,056 760,000 0.12%
123 BOSTON SCIENTIFIC CORP 41,245 761,000 0.12%
124 AXOGEN INC 152,201 761,000 0.12%
125 CARBONITE INC COM 77,667 761,000 0.12%
126 MODEL N INCORPORATED 69,625 777,000 0.12%
127 DSP GROUP INC 82,861 782,000 0.12%
128 VERTEX PHARMACEUTICALS INC 6,247 786,000 0.12%
129 NOVANTA INC 57,822 788,000 0.12%
130 CENTRAL GARDEN & PET CO 58,009 789,000 0.12%
131 FLOWSERVE CORP 18,822 792,000 0.12%
132 CONTINENTAL RESOURE 34,702 797,000 0.12%
133 TANDEM DIABETES CARE INC COM 68,020 803,000 0.13%
134 ADVANCED DRAIN SYS INC DEL 33,476 804,000 0.13%
135 NOVARTIS A G 9,383 807,000 0.13%
136 CHANNELADVISOR CORP COM 58,557 811,000 0.13%
137 DULUTH HLDGS INC 55,585 811,000 0.13%
138 ALEXION PHARMACEUTIC 4,284 817,000 0.13%
139 WABTEC CORP 11,507 818,000 0.13%
140 OCLARO INC 236,749 824,000 0.13%
141 LILLY ELI & CO 9,963 839,000 0.13%
142 POWERSECURE INTL INC 56,999 858,000 0.13%
143 APPLIED OPTOELECTRONICS INC COM 50,000 858,000 0.13%
144 JAZZ PHARMACEUTICALS PLC 6,192 870,000 0.14%
145 TubeMogul, Inc. 64,126 872,000 0.14%
146 BEAZER HOMES USA INC COM NEW 76,649 881,000 0.14%
147 U S CONCRETE INC 16,781 884,000 0.14%
148 VISTEON CORP COM NEW 7,756 888,000 0.14%
149 CARDTRONICS INC COM 26,896 905,000 0.14%
150 CHEROKEE INC DEL NEW 52,618 908,000 0.14%
Page 3 of 7

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-16-002326, filed 2016.01.26).

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.