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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 (2015Q3)
Original 13F HR (0001085146-15-002279) filed in 2015.11.12
#
Name
Shares
Value ($)
%
Options
Notes
151 BRIGHT HORIZONS FAM SOL IN D 632,115 40,607 0.29%
152 JONES LANG LASALLE INC 283,670 40,783 0.29%
153 WILLIAMS SONOMA INC 534,759 40,829 0.29%
154 UNUM GROUP 1,328,905 42,631 0.30%
155 ASBURY AUTOMOTIVE GROUP INC COM 540,748 43,882 0.31%
156 NEXSTAR MEDIA GROUP INC 928,083 43,945 0.31%
157 PROTHENA CORP PLC 987,979 44,795 0.32%
158 NEUROCRINE BIOSCIENCES INC 1,145,845 45,593 0.32%
159 POLYONE CORP 1,554,081 45,597 0.32%
160 KNOLL INC 2,079,962 45,718 0.32%
161 MEDIVATION INC 1,075,846 45,723 0.32%
162 CATERPILLAR INC 710,028 46,407 0.33%
163 CBRE GROUP INC 1,450,307 46,410 0.33%
164 EASTMAN CHEM CO 742,033 48,024 0.34%
165 TEMPUR SEALY INTL INC 674,988 48,214 0.34%
166 JACK IN THE BOX INC 641,178 49,396 0.35%
167 WRIGHT MEDICAL GROUP NV 2,402,633 50,503 0.36%
168 SIX FLAGS ENTMT CORP NEW 1,130,643 51,761 0.37%
169 BRUNSWICK CORP 1,090,078 52,204 0.37%
170 RAYMOND JAMES FINANC 1,058,934 52,555 0.37%
171 NETFLIX INC 515,402 53,220 0.38%
172 COMMUNITY HEALTH SYS INC NEW 1,280,817 54,781 0.39%
173 RPM INTL INC 1,316,354 55,142 0.39%
174 SANOFI SPOND FUNSPONSORED ADR 6,511,561 55,413 0.39%
175 ARIAD PHARMACEUTICALS ORD (NMS) 9,633,464 56,259 0.40%
176 SPLUNK INC 1,022,402 56,590 0.40%
177 PACIRA PHARMACEUTICALS INC 1,389,164 57,095 0.40%
178 METTLER TOLEDO INTERNATIONAL 200,654 57,134 0.40%
179 FIRST REP BK SAN FRANCISCO C 914,620 57,411 0.41%
180 AVAGO TECHNOLOGIES LTD SHS 465,088 58,141 0.41%
181 MANPOWERGROUP INC 720,289 58,984 0.42%
182 RED HAT INC 822,556 59,125 0.42%
183 SNAP ON INC 392,101 59,184 0.42%
184 WABCO HLDGS INC 566,125 59,347 0.42%
185 GENESEE AND WYOMING INC INC CL A 1,035,545 61,180 0.43%
186 QLIK TECHNOLOGIES INC COM 1,744,165 63,575 0.45%
187 ALLIANCE DATA SYSTEMS CORP 254,842 65,999 0.47%
188 SIGNET JEWELERS LIMITED 496,411 67,576 0.48%
189 VULCAN MATLS CO 772,674 68,923 0.49%
190 BANKUNITED INC 1,998,489 71,446 0.51%
191 ALLSCRIPTS HEALTHCARE SOLUTN 5,804,292 71,973 0.51%
192 ON SEMICONDUCTOR CORP 7,668,791 72,087 0.51%
193 Agnico Eagle 3,059,298 73,913 0.52%
194 VAIL RESORTS INC 711,496 74,479 0.53%
195 SABRE CORP 2,752,950 74,825 0.53%
196 AMAG PHARMACEUTICALS INC 1,886,905 74,967 0.53%
197 STARWOOD PPTY TR INC 3,753,721 77,026 0.55%
198 IHS Markit Ltd. 671,617 77,908 0.55%
199 LAM RESEARCH CORP 1,207,589 78,892 0.56%
200 ALIGN TECHNOLOGY INC 1,399,377 79,429 0.56%
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