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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
101 CATERPILLAR INC 710,028 46,407 0.33%
102 MEDIVATION INC 1,075,846 45,723 0.32%
103 KNOLL INC 2,079,962 45,718 0.32%
104 POLYONE CORP 1,554,081 45,597 0.32%
105 NEUROCRINE BIOSCIENCES INC 1,145,845 45,593 0.32%
106 PROTHENA CORP PLC 987,979 44,795 0.32%
107 NEXSTAR MEDIA GROUP INC 928,083 43,945 0.31%
108 ASBURY AUTOMOTIVE GROUP INC COM 540,748 43,882 0.31%
109 UNUM GROUP 1,328,905 42,631 0.30%
110 WILLIAMS SONOMA INC 534,759 40,829 0.29%
111 JONES LANG LASALLE INC 283,670 40,783 0.29%
112 BRIGHT HORIZONS FAM SOL IN D 632,115 40,607 0.29%
113 InterDigital Inc 1,405,131 38,276 0.27%
114 VERIFONE SYS INC 1,371,090 38,020 0.27%
115 WATSCO INC 318,190 37,699 0.27%
116 EXPEDIA INC DEL 315,293 37,104 0.26%
117 Dentsply Intl Inc 719,702 36,395 0.26%
118 ROBERT HALF INTL INC 706,879 36,164 0.26%
119 QUEST DIAGNOSTICS INC 586,573 36,057 0.26%
120 STARWOOD HOTELS & RESORTS WORLDWIDE INC COM 532,666 35,412 0.25%
121 AMERIPRISE FINL INC 320,575 34,984 0.25%
122 STEELCASE INC 1,877,299 34,561 0.24%
123 ELECTRONICS FOR IMAGING INC 773,630 33,483 0.24%
124 PTC THERAPEUTICS INC 1,251,141 33,405 0.24%
125 MAXIM INTEGR 998,925 33,364 0.24%
126 ALEXANDER & BALDWIN INC NEW COM 959,325 32,934 0.23%
127 CHEMTURA CORP 1,147,971 32,855 0.23%
128 LITHIA MTRS INC COM 296,013 32,002 0.23%
129 DYAX CORP COM CVR 1,670,922 31,898 0.23%
130 HURON CONSULTING 500,914 31,322 0.22%
131 ULTIMATE SOFTWARE GROUP INC COM 174,824 31,295 0.22%
132 WERNER ENTERPRISES INC 1,216,066 30,523 0.22%
133 FIVE BELOW INC 895,407 30,068 0.21%
134 TASER INTL INC 1,349,858 29,731 0.21%
135 DOLLAR GEN CORP NEW 407,768 29,539 0.21%
136 AMERICAN EAGLE OUTFITTERS NE 1,864,200 29,137 0.21%
137 CROWN CASTLE INTL CORP NEW 368,683 29,078 0.21%
138 DAVE & BUSTERS ENTMT INC 764,965 28,939 0.20%
139 Intuit Inc 151,043 28,718 0.20%
140 HARMAN INTL INDS INC COM 298,808 28,683 0.20%
141 SONIC CORP 1,245,545 28,585 0.20%
142 NORD ANGLIA EDUCATION INC SHS 1,386,684 28,191 0.20%
143 AON PLC 310,204 27,487 0.19%
144 CNO FINL GROUP INC 1,461,276 27,487 0.19%
145 STARZ SERIES A 735,284 27,456 0.19%
146 BUILDERS FIRSTSOURCE INC COM 2,154,750 27,322 0.19%
147 CARDIOME PHARMA CORP 3,222,395 27,197 0.19%
148 MONOLITHIC PWR SYS INC 528,292 27,049 0.19%
149 AGILENT TECHNOLOGIES INC 782,500 26,863 0.19%
150 CEB INC 389,992 26,652 0.19%
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