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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 (2015Q2)
Portfolio Summary: 283 holdings with a total value of $16,394,451,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 POLYONE CORP 1,407,576 55,135,000 0.34%
102 JACK IN THE BOX INC 620,428 54,697,000 0.33%
103 SERVICE CORP INTL 1,828,530 53,814,000 0.33%
104 CBRE GROUP INC 1,453,936 53,796,000 0.33%
105 ASSURANT INC 751,563 50,355,000 0.31%
106 KNOLL INC 2,011,187 50,340,000 0.31%
107 NEXSTAR MEDIA GROUP INC 898,428 50,312,000 0.31%
108 MEAD JOHNSON NUTRITI 546,983 49,349,000 0.30%
109 MEDIVATION INC 431,803 49,312,000 0.30%
110 UNUM GROUP 1,343,770 48,040,000 0.29%
111 BROOKDALE SR LIVING INC 1,361,415 47,241,000 0.29%
112 JONES LANG LASALLE 275,223 47,063,000 0.29%
113 TEAM HEALTH HOLDINGS INC 720,116 47,045,000 0.29%
114 HUNTSMAN CORP 2,129,030 46,988,000 0.29%
115 LIBERTY GLOBAL PLC 907,142 45,929,000 0.28%
116 ROBERT HALF INTL INC 815,074 45,237,000 0.28%
117 AUTODESK INC 895,070 44,821,000 0.27%
118 QUEST DIAGNOSTICS INC 596,154 43,233,000 0.26%
119 TEMPUR SEALY INTL INC 653,193 43,045,000 0.26%
120 WILLIAMS SONOMA INC 518,454 42,653,000 0.26%
121 WATSCO INC 329,290 40,746,000 0.25%
122 WENDYS CO 3,453,785 38,959,000 0.24%
123 ASBURY AUTOMOTIVE GROUP INC COM 427,373 38,729,000 0.24%
124 ALEXANDER & BALDWIN INC NEW COM 927,880 36,558,000 0.22%
125 HURON CONSULTING 517,914 36,301,000 0.22%
126 AON PLC 364,098 36,293,000 0.22%
127 ALLISON TRANSMISSION HLDGS INC COM 1,206,685 35,308,000 0.22%
128 InterDigital Inc 1,409,046 35,268,000 0.22%
129 CEB Inc 402,777 35,066,000 0.21%
130 SOLARWINDS INC 758,730 35,000,000 0.21%
131 MASIMO CORP 892,988 34,594,000 0.21%
132 LITHIA MTRS INC COM 304,983 34,512,000 0.21%
133 HARMAN INTL INDS INC 289,558 34,440,000 0.21%
134 DYNAVAX TECHNOLOGIES CORP 1,443,447 33,813,000 0.21%
135 TASER INTL INC 1,004,633 33,464,000 0.20%
136 AMERIPRISE FINL INC 267,500 33,419,000 0.20%
137 NORD ANGLIA EDUCATION INC 1,342,149 32,909,000 0.20%
138 AFFILIATED MANAGERS GROUP 149,393 32,657,000 0.20%
139 BRIGHT HORIZONS FAM SOL IN DEL COM 557,620 32,230,000 0.20%
140 DOLLAR GEN CORP NEW 413,785 32,168,000 0.20%
141 ADVANCED ENERGY INDS COM 1,170,108 32,166,000 0.20%
142 Dentsply Intl Inc 619,475 31,934,000 0.19%
143 CAESARSTONE LTD 462,406 31,693,000 0.19%
144 WERNER ENTERPRISES INC 1,175,801 30,865,000 0.19%
145 EXPEDIA INC DEL 280,895 30,716,000 0.19%
146 STEELCASE INC 1,617,883 30,594,000 0.19%
147 Nice Systems LTD Sponsored 477,998 30,396,000 0.19%
148 CROWN CASTLE INTL CORP NEW 373,361 29,981,000 0.18%
149 EAST WEST BANCORP INC 667,925 29,936,000 0.18%
150 HANESBRANDS INC 892,427 29,736,000 0.18%
Page 3 of 6

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001085146-15-001755, filed 2015.08.13).

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.