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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 (2016Q4)
Portfolio Summary: 253 holdings with a total value of $11,405,054,000.
#
Name
Shares
Value ($)
%
Options
Notes
151 LIONS GATE ENTMNT CORP CL B NON VTG 1,579,403 38,759,000 0.34%
152 SPLUNK INC 760,985 38,924,000 0.34%
153 KNOLL INC 1,419,658 39,651,000 0.35%
154 OLD DOMINION FREIGHT LINE IN 469,480 40,277,000 0.35%
155 STAG INDL INC 1,718,748 41,027,000 0.36%
156 SEALED AIR CORP NEW 946,970 42,936,000 0.38%
157 VANTIV INC 728,945 43,460,000 0.38%
158 VALERO ENERGY CORP NEW 645,583 44,106,000 0.39%
159 DEXCOM INC 748,796 44,703,000 0.39%
160 RAYMOND JAMES FINANC 647,824 44,875,000 0.39%
161 KELLOGG CO 625,143 46,079,000 0.40%
162 HALLIBURTON CO 890,699 48,178,000 0.42%
163 ALLEGIANT TRAVEL CO 291,724 48,543,000 0.43%
164 FIRST REP BK SAN FRANCISCO C 529,642 48,801,000 0.43%
165 RALPH LAUREN CORP 551,305 49,794,000 0.44%
166 RED HAT INC 726,960 50,669,000 0.44%
167 AXALTA COATING SYS LTD 1,887,810 51,348,000 0.45%
168 NEKTAR THERAPEUTICS COM 4,188,777 51,396,000 0.45%
169 TOTAL SYS SVCS INC 1,048,396 51,403,000 0.45%
170 PACIRA PHARMACEUTICALS INC 1,603,681 51,799,000 0.45%
171 JOHN BEAN TECHNOLOGIES CORP COM 609,375 52,376,000 0.46%
172 RYDER SYS INC 707,608 52,674,000 0.46%
173 EAST WEST BANCORP INC 1,053,162 53,532,000 0.47%
174 MSCI INC 680,994 53,649,000 0.47%
175 NEUROCRINE BIOSCIE COM USD0.001 1,393,505 53,929,000 0.47%
176 FORTINET INC 1,877,339 56,545,000 0.50%
177 HILL ROM HLDGS INC 1,017,223 57,107,000 0.50%
178 THERMO FISHER SCIENTIFIC INC 413,116 58,291,000 0.51%
179 PRICELINE GRP INC 39,857 58,433,000 0.51%
180 SCHWAB CHARLES CORP 1,485,306 58,625,000 0.51%
181 SABRE CORP 2,353,417 58,718,000 0.51%
182 TRANSUNION 1,905,801 58,946,000 0.52%
183 MICROSEMI CORP 1,099,998 59,367,000 0.52%
184 CIENA CORP 2,436,166 59,467,000 0.52%
185 ADOBE INC 585,098 60,236,000 0.53%
186 COSTAR GROUP 323,036 60,889,000 0.53%
187 APPLIED MATLS INC 1,891,672 61,044,000 0.54%
188 PINNACLE FOODS INC DEL 1,144,482 61,173,000 0.54%
189 ARIAD PHARMACEUTICALS ORD (NMS) 4,957,058 61,666,000 0.54%
190 INSTALLED BLDG PRODS INC COM 1,497,334 61,840,000 0.54%
191 ARAMARK 1,735,285 61,984,000 0.54%
192 BAKER HUGHES INC 960,832 62,425,000 0.55%
193 Wright Medical Group NV 2,737,499 62,908,000 0.55%
194 TESORO CORP 719,855 62,951,000 0.55%
195 QUEST DIAGNOSTICS INC 690,181 63,428,000 0.56%
196 SCRIPPS NETWORKS INTERACT IN 896,775 64,003,000 0.56%
197 DELPHI AUTOMOTIVE PLC 966,197 65,073,000 0.57%
198 TWENTY FIRST CENTY FOX INC 2,333,523 65,432,000 0.57%
199 MASTERCARD INCORPORATED 661,385 68,288,000 0.60%
200 ICON PLC 916,280 68,904,000 0.60%
Page 4 of 6

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001085146-17-000444, filed 2017.02.10).

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.