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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
101 COVENANT TRANSN GROUP INC CL A 64,166 1,740,000 0.25%
102 TWITTER INC 46,447 1,666,000 0.24%
103 SNAP ON INC 12,014 1,643,000 0.24%
104 SPECTRANETICS CORP 46,731 1,616,000 0.24%
105 HEALTHSTREAM INC COM 53,378 1,574,000 0.23%
106 XPO LOGISTICS INC 37,649 1,539,000 0.22%
107 DEXCOM INC 27,786 1,530,000 0.22%
108 HAIN CELESTIAL GROUP INC 26,252 1,530,000 0.22%
109 SIGMA DESIGNS INC COM 202,314 1,497,000 0.22%
110 INTRALINKS HLDGS INC 124,220 1,478,000 0.22%
111 INFOBLOX INC 72,524 1,466,000 0.21%
112 CAVCO INDS INC DEL 18,287 1,450,000 0.21%
113 HALLIBURTON CO 35,887 1,411,000 0.21%
114 TEVA PHARMACEUTICAL INDS LTD 24,422 1,405,000 0.20%
115 Invacare Corp 28,931 1,386,000 0.20%
116 BRIGHT HORIZONS FAM SOL IN DEL COM 29,441 1,384,000 0.20%
117 MATADOR RES CO 66,866 1,353,000 0.20%
118 KORN FERRY COM NEW 46,747 1,344,000 0.20%
119 PFSWEB INC COM STK 104,695 1,325,000 0.19%
120 AGNICO EAGLE MINES LTD 52,600 1,309,000 0.19%
121 LOGMEIN INC 26,343 1,300,000 0.19%
122 CHEVRON CORP NEW 11,490 1,289,000 0.19%
123 KNOLL INC 60,570 1,282,000 0.19%
124 PERNIX THERAPEUTICS HLDGS IN 134,800 1,266,000 0.18%
125 MATSON INC COM 36,491 1,260,000 0.18%
126 PROASSURANCE CORP. 45,636 1,254,000 0.18%
127 SCHULMAN A INC 30,490 1,236,000 0.18%
128 FRESH MKT INC 29,932 1,233,000 0.18%
129 BOISE CASCADE CO DEL COM 33,188 1,233,000 0.18%
130 DYAX CORP COM CVR 87,467 1,230,000 0.18%
131 HEADWATERS INC COM 81,816 1,226,000 0.18%
132 WAUSAU PAPER CORP 107,704 1,225,000 0.18%
133 PERICOM SEMICONDUCTOR CORP 90,452 1,225,000 0.18%
134 GOLDCORP INC NEW 65,770 1,218,000 0.18%
135 UNITEDHEALTH GROUP INC 12,028 1,216,000 0.18%
136 STEWART INFORMATION SVCS COR 32,295 1,196,000 0.17%
137 PACIFIC BIOSCIENCES CALIF IN 151,253 1,186,000 0.17%
138 EVERCORE PARTNERS INC 22,504 1,179,000 0.17%
139 ROYAL GOLD INC 18,700 1,172,000 0.17%
140 AMERISAFE INC COM 27,348 1,158,000 0.17%
141 GRUBHUB INC 31,707 1,152,000 0.17%
142 AMAZON COM INC 3,700 1,148,000 0.17%
143 CAREER EDUCATION CRP 164,808 1,147,000 0.17%
144 U S CONCRETE INC 40,286 1,146,000 0.17%
145 DEVRY EDUCATION 23,947 1,137,000 0.17%
146 STRATASYS LTD 13,600 1,130,000 0.16%
147 BAIDU INC 4,900 1,117,000 0.16%
148 CRA INTL INC COM 36,686 1,112,000 0.16%
149 MANHATTAN ASSOCIATES INC 26,913 1,096,000 0.16%
150 CARDTRONICS INC COM 28,117 1,085,000 0.16%
Page 3 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.