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 (2014Q4)
Portfolio Summary: 332 holdings with a total value of $686,664,000.
#
Name
Shares
Value ($)
%
Options
Notes
201 ARTISAN PARTNERS ASSET MGMT 12,007 607,000 0.09%
202 WATTS WATER TECHNOLOGIES INC 9,403 597,000 0.09%
203 RADIANT LOGISTICS INC 140,243 593,000 0.09%
204 TSAKOS ENERGY NAVIGATION LTD 84,422 589,000 0.09%
205 GENERAL ELECTRIC CO 23,193 586,000 0.09%
206 BORGWARNER INC 10,503 577,000 0.08%
207 AK STL HLDG CORP 97,133 577,000 0.08%
208 KINDER MORGAN INC DEL 13,528 572,000 0.08%
209 ISHARES RUSSELL 2000 GROWTH ETF 3,915 557,000 0.08%
210 POWERSECURE INTL INC 47,072 548,000 0.08%
211 BIODELIVERY SCIENCES INTL IN 45,217 544,000 0.08%
212 CALGON CARBON CORP 25,913 538,000 0.08%
213 HEXCEL CORP NEW COM 12,922 536,000 0.08%
214 BioTelemetry Inc 53,100 533,000 0.08%
215 YOUKU TUDOU INC 29,771 530,000 0.08%
216 ACADIA PHARMACEUTICALS INC COM 16,647 529,000 0.08%
217 MYR GROUP INC DEL COM 18,946 519,000 0.08%
218 WILLDAN GROUP INC 38,448 519,000 0.08%
219 ASA GOLD AND PRECIOUS MTLS L 51,000 516,000 0.08%
220 RAVEN INDS INC 20,354 509,000 0.07%
221 LKQ CORP 17,918 504,000 0.07%
222 JAZZ PHARMACEUTICALS PLC 3,073 503,000 0.07%
223 AMERICAN EXPRESS CO 5,333 496,000 0.07%
224 ENDURANCE INTL GROUP HLDGS I 26,935 496,000 0.07%
225 Penn Virginia Corp 74,037 495,000 0.07%
226 DOLLAR TREE INC 7,008 493,000 0.07%
227 BIOAMBER INC 58,728 493,000 0.07%
228 EXXON MOBIL CORP 5,336 493,000 0.07%
229 MEDNAX INC 7,393 489,000 0.07%
230 INSULET CORPORATION 10,458 482,000 0.07%
231 WAL-MART STORES INC 5,500 472,000 0.07%
232 ALPHATEC HOLDINGS INC 333,579 470,000 0.07%
233 SANGAMO THERAPEUTICS INCORPORATED 30,684 467,000 0.07%
234 PACKAGING CORP AMER 5,943 464,000 0.07%
235 EURONET WORLDWIDE INC 8,457 464,000 0.07%
236 XYLEM INC 12,157 463,000 0.07%
237 ALLIANCE DATA SYSTEMS CORP 1,617 463,000 0.07%
238 CAMPBELL SOUP CO 10,456 460,000 0.07%
239 ENERGY RECOVERY INC 85,235 449,000 0.07%
240 Codexis Inc Com 177,979 449,000 0.07%
241 AXT INC 158,472 444,000 0.06%
242 PUMA BIOTECHNOLOGY 2,336 442,000 0.06%
243 SUNOPTA INC 37,201 441,000 0.06%
244 ZENDESK INC 17,889 436,000 0.06%
245 TRINITY BIOTECH PLC 24,885 436,000 0.06%
246 LIBERTY TAX INC 12,105 433,000 0.06%
247 ALLSCRIPTS HEALTHCARE SOLUTN 33,780 431,000 0.06%
248 VERTEX PHARMACEUTICALS INC 3,456 411,000 0.06%
249 SOUTHWESTERN ENERGY CO 15,030 410,000 0.06%
250 BLUEBIRD BIO INC COM 4,427 406,000 0.06%
Page 5 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.