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 (2014Q3)
Portfolio Summary: 355 holdings with a total value of $653,505,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 GALLAGHER ARTHUR J & CO 39,734 1,802,000 0.28%
102 AFFYMETRIX INCOC-CAP STK CASH MGREFF 4/1/16 1 OLDUSD 14.00 PER SHARE 224,349 1,790,000 0.27%
103 ROYAL GOLD INC 26,609 1,728,000 0.26%
104 RANGE RES CORP 25,342 1,718,000 0.26%
105 Market Vector Junior 49,589 1,667,000 0.26%
106 MARSH & MCLENNAN COS INC 31,324 1,639,000 0.25%
107 ALKERMES PLC 37,975 1,628,000 0.25%
108 XPO LOGISTICS INC 42,077 1,585,000 0.24%
109 Callidus Software Inc 131,688 1,583,000 0.24%
110 HAIN CELESTIAL GROUP INC 14,369 1,471,000 0.23%
111 SNAP ON INC 12,027 1,456,000 0.22%
112 ALLSCRIPTS HEALTHCARE SOLUTN 107,883 1,447,000 0.22%
113 EXAMWORKS GROUP INC COM 42,568 1,394,000 0.21%
114 CHEVRON CORP NEW 11,684 1,394,000 0.21%
115 CAVCO INDS INC DEL 20,449 1,391,000 0.21%
116 UNITEDHEALTH GROUP INC 16,028 1,382,000 0.21%
117 COVENANT TRANSN GROUP INC CL A 74,320 1,382,000 0.21%
118 B/E AEROSPACE INC 16,227 1,362,000 0.21%
119 LOGMEIN INC 29,324 1,351,000 0.21%
120 OPOWER INC 71,472 1,348,000 0.21%
121 Invacare Corp 32,155 1,344,000 0.21%
122 EPAM SYS INC 30,531 1,337,000 0.20%
123 HEALTHSTREAM INC COM 55,490 1,332,000 0.20%
124 DEXCOM INC 33,255 1,330,000 0.20%
125 PFSWEB INC COM STK 121,028 1,317,000 0.20%
126 TEVA PHARMACEUTICAL INDS LTD 24,422 1,313,000 0.20%
127 KORN FERRY COM NEW 51,748 1,289,000 0.20%
128 PROASSURANCE CORP. 51,042 1,286,000 0.20%
129 ORASURE TECHNOLOGIES INC 177,449 1,281,000 0.20%
130 TOWER SEMICONDUCTOR LTD 124,701 1,268,000 0.19%
131 IGI LABS INC 134,712 1,256,000 0.19%
132 ACUITY BRANDS INC 10,534 1,240,000 0.19%
133 BRIGHT HORIZONS FAM SOL IN DEL COM 29,441 1,238,000 0.19%
134 SCHULMAN A INC 34,128 1,234,000 0.19%
135 U S CONCRETE INC 46,149 1,206,000 0.18%
136 AMERISAFE INC COM 30,568 1,196,000 0.18%
137 INFOBLOX INC 80,796 1,192,000 0.18%
138 FRESH MKT INC 33,443 1,168,000 0.18%
139 EVERCORE PARTNERS INC 24,860 1,168,000 0.18%
140 KNOLL INC 67,120 1,162,000 0.18%
141 BOISE CASCADE CO DEL COM 38,445 1,159,000 0.18%
142 CHEROKEE INC DEL NEW 63,663 1,159,000 0.18%
143 Alon USA Energy, Inc. 79,961 1,148,000 0.18%
144 DEVRY EDUCATION 26,782 1,147,000 0.18%
145 CARDTRONICS INC COM 32,571 1,146,000 0.18%
146 HEADWATERS INC COM 91,243 1,144,000 0.18%
147 MENS WEARHOUSE INC 23,838 1,126,000 0.17%
148 BIG LOTS INC 25,851 1,113,000 0.17%
149 RANDGOLD RES LTD 16,359 1,106,000 0.17%
150 Penn Virginia Corp 85,775 1,090,000 0.17%
Page 3 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-14-001643, filed 2014.10.29).

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.