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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 (2015Q2)
Portfolio Summary: 312 holdings with a total value of $662,203,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 TARGA RES CORP 7,229 645,000 0.10%
102 BIODELIVERY SCIENCES INTL IN 81,728 651,000 0.10%
103 KEYW HLDG CORP 70,954 661,000 0.10%
104 CELLDEX THERAPEUTICS INC NEW 26,359 665,000 0.10%
105 Codexis Inc Com 172,976 673,000 0.10%
106 POWERSECURE INTL INC 45,764 675,000 0.10%
107 XYLEM INC 18,461 684,000 0.10%
108 ILLINOIS TOOL WKS INC 7,500 688,000 0.10%
109 SHIRE PLC 2,866 692,000 0.10%
110 ACADIA PHARMACEUTICALS INC COM 16,647 697,000 0.11%
111 TEAM HEALTH HOLDINGS INC 11,082 724,000 0.11%
112 TRANSUNION 28,987 728,000 0.11%
113 BOSTON SCIENTIFIC CORP 41,245 730,000 0.11%
114 LEVY ACQUISITION CORP 48,100 732,000 0.11%
115 GLOBE SPECIALTY METALS INC 41,613 737,000 0.11%
116 REGENERON PHARMACEUTICALS 1,445 737,000 0.11%
117 HUDSON TECHNOLOGIES INC 212,448 741,000 0.11%
118 WATTS WATER TECHNOLOGIES INC 14,343 744,000 0.11%
119 ITRON INC 21,859 753,000 0.11%
120 CALGON CARBON CORP 39,513 766,000 0.12%
121 IRIDEX CORP 92,912 767,000 0.12%
122 BIOAMBER INC 89,471 769,000 0.12%
123 VERTEX PHARMACEUTICALS INC 6,247 771,000 0.12%
124 TOWER SEMICONDUCTOR LTD 50,000 772,000 0.12%
125 ALEXION PHARMACEUTIC 4,284 774,000 0.12%
126 CHARLES RIV LABS INTL INC 11,179 786,000 0.12%
127 CONSTANT CONTACT INC 28,310 814,000 0.12%
128 AUTOBYTEL INC COM NEW 51,036 816,000 0.12%
129 ADVANCED DRAIN SYS INC DEL 28,123 825,000 0.12%
130 TSAKOS ENERGY NAVIGATION LTD 86,573 825,000 0.12%
131 Alliance Fiber Optic Products 45,073 836,000 0.13%
132 MODEL N INCORPORATED 70,655 842,000 0.13%
133 SHILOH INDS INC 65,185 844,000 0.13%
134 PACIFIC BIOSCIENCES CALIF IN 147,052 847,000 0.13%
135 STAGE STORES INC 48,563 851,000 0.13%
136 DANAHER CORP DEL 10,000 856,000 0.13%
137 Vocera Communications Inc 75,843 868,000 0.13%
138 ALNYLAM PHARMACEUTICALS INC 7,244 868,000 0.13%
139 DSP GROUP INC 84,162 869,000 0.13%
140 PIONEER NAT RES CO 6,285 872,000 0.13%
141 WABTEC CORP 9,274 874,000 0.13%
142 NOVANTA INC 58,263 876,000 0.13%
143 SILICOM LTD 23,992 884,000 0.13%
144 MYR GROUP INC DEL COM 28,775 891,000 0.13%
145 AEGEAN MARINE PETROLEUM NETW 72,304 894,000 0.14%
146 BORGWARNER INC 16,006 910,000 0.14%
147 Carriage Services Inc. 38,441 918,000 0.14%
148 ATLAS FINANCIAL HOLDINGS INC SHS NEW 46,523 923,000 0.14%
149 SYNERGETICS USA INC 197,409 928,000 0.14%
150 CARBONITE INC COM 78,670 929,000 0.14%
Page 3 of 7

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-15-001391, filed 2015.07.28).

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.