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Institutional Investment Manager
WESTFIELD CAPITAL MANAGEMENT CO LP
WESTFIELD CAPITAL MANAGEMENT CO LP (CIK: 0001177719) incorporated in Delaware, located at One Financial Center, Boston, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q3)
Original 13F HR (0001085146-14-002222) filed in 2014.11.12
#
Name
Shares
Value ($)
%
Options
Notes
151 VERTEX PHARMACEUTICALS INC 288,886 32,445 0.20%
152 MEADWESTVACO CORP 788,140 32,266 0.20%
153 NXP SEMICONDUCTORS N V 468,810 32,081 0.20%
154 PTC THERAPEUTICS INC 720,980 31,730 0.19%
155 NEXSTAR MEDIA GROUP INC 766,938 31,000 0.19%
156 WABCO HLDGS INC 340,069 30,929 0.19%
157 ON SEMICONDUCTOR CORP 3,414,730 30,528 0.19%
158 HEXCEL CORP NEW COM 763,890 30,326 0.19%
159 QUEST DIAGNOSTICS INC 496,300 30,115 0.18%
160 PRICE T ROWE GROUP INC 379,525 29,755 0.18%
161 EAST WEST BANCORP INC 868,030 29,513 0.18%
162 AVANIR PHARMACEUTICALS INC CL 2,439,490 29,079 0.18%
163 COGENT COMMUNICATIONS HLDGS 863,435 29,020 0.18%
164 STERIS PLC 537,601 29,009 0.18%
165 SHUTTERFLY INC 589,875 28,751 0.18%
166 REGIONS FINANCIAL CORP NEW 2,825,700 28,370 0.17%
167 STIFEL FINANCIAL CP 594,745 27,888 0.17%
168 BRIGHT HORIZONS FAM SOL IN D 652,965 27,464 0.17%
169 CHEMTURA CORP 1,155,880 26,967 0.16%
170 HANESBRANDS INC 247,795 26,623 0.16%
171 EXAMWORKS GROUP INC COM 794,671 26,025 0.16%
172 PROTHENA CORP PLC 1,158,395 25,670 0.16%
173 SUPERIOR ENERGY SVCS INC 779,985 25,638 0.16%
174 Dynavax Techs Cp New 17,675,041 25,275 0.15%
175 AKAMAI TECHNOLOGIES INC 422,640 25,274 0.15%
176 ABERCROMBIE & FITCH CO 689,420 25,054 0.15%
177 STARWOOD HOTELS & RESORTS WORLDWIDE INC COM 297,620 24,765 0.15%
178 ITT Corp 547,735 24,615 0.15%
179 Royal Gold Inc 1,826,505 24,402 0.15%
180 WERNER ENTERPRISES INC 962,408 24,253 0.15%
181 LITHIA MTRS INC COM 319,220 24,162 0.15%
182 WHITEWAVE FOODS CO 658,169 23,911 0.15%
183 Corp Executive Board Co 395,883 23,781 0.15%
184 Intuit Inc 114,339 23,759 0.15%
185 Forum Energy Technologies Inc 773,320 23,671 0.14%
186 QIAGEN NV 1,025,640 23,354 0.14%
187 SENSATA TECHNOLOGIES HLDG NV 510,090 22,714 0.14%
188 JETBLUE AIRWAYS CORP 2,136,840 22,693 0.14%
189 INTERXION HOLDING N.V 815,601 22,584 0.14%
190 ULTIMATE SOFTWARE GROUP INC COM 151,914 21,497 0.13%
191 MASIMO CORP 1,007,740 21,445 0.13%
192 HOMEAWAY INC 590,280 20,955 0.13%
193 STANDARD PAC CORP 2,760,420 20,676 0.13%
194 MILLERKNOLL INC 685,086 20,450 0.12%
195 DOLLAR GEN CORP NEW 333,010 20,350 0.12%
196 WESTERN REFNG INC 481,360 20,212 0.12%
197 RUSH ENTERPRISES INC CL A 590,205 19,742 0.12%
198 SAIA INC COM 395,748 19,613 0.12%
199 POWER SOLUTIONS INTERNATIONAL INC 279,904 19,313 0.12%
200 NAVIGATOR HLDGS LTD 680,312 18,933 0.12%
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