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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 (2016Q3)
Portfolio Summary: 249 holdings with a total value of $12,391,388,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 RALPH LAUREN CORP 415,162 41,989,000 0.34%
102 Ultimate Software Group Inc 204,117 41,719,000 0.34%
103 TEAM HEALTH HOLDINGS INCORPORATED 1,267,680 41,276,000 0.33%
104 A O SMITH 414,993 40,997,000 0.33%
105 RAYMOND JAMES FINANC 695,089 40,461,000 0.33%
106 WATSCO INC 285,072 40,167,000 0.32%
107 MACQUARIE INFRASTRUCTURE COR 481,462 40,077,000 0.32%
108 INTERPUBLIC GROUP COS INC 1,723,062 38,510,000 0.31%
109 SCRIPPS NETWORKS INTERACT IN 596,975 37,902,000 0.31%
110 LIBERTY BROADBAND CORP COM SER A 533,040 37,398,000 0.30%
111 ELECTRONICS FOR IMAGING INC 752,860 36,830,000 0.30%
112 BUILDERS FIRSTSOURCE INC 3,196,956 36,797,000 0.30%
113 CIENA CORP COM NEW 1,680,066 36,625,000 0.30%
114 FORTUNE BRANDS INNOV 626,748 36,414,000 0.29%
115 DENTSPLY SIRONA INC 607,384 36,097,000 0.29%
116 NORFOLK SOUTHN CORP 371,100 36,019,000 0.29%
117 STARWOOD PPTY TR INC 1,593,066 35,876,000 0.29%
118 BE AEROSPACE INC 690,112 35,651,000 0.29%
119 ALIGN TECHNOLOGY INC 379,485 35,577,000 0.29%
120 WR GRACE & CO 475,175 35,068,000 0.28%
121 FIRST REP BK SAN FRANCISCO C 451,234 34,795,000 0.28%
122 INTEGRA LIFESCIENCES HLDGS CP COM NEW 419,360 34,618,000 0.28%
123 MASIMO CORP COM 575,453 34,234,000 0.28%
124 OLD DOMINION FREIGHT LINE IN 490,415 33,647,000 0.27%
125 STAG INDL INC 1,370,140 33,582,000 0.27%
126 BRIGHT HORIZONS FAM SOL IN DEL COM 496,134 33,186,000 0.27%
127 PVH CORPORATION 287,905 31,814,000 0.26%
128 FLOWSERVE CORP 649,800 31,346,000 0.25%
129 MUELLER WTR PRODS INC 2,481,131 31,138,000 0.25%
130 FLEETCOR TECH 177,369 30,814,000 0.25%
131 ZENDESK INC 1,003,275 30,811,000 0.25%
132 RYDER SYS INC COM 463,545 30,571,000 0.25%
133 BROADSOFT INC 648,679 30,196,000 0.24%
134 ALLIANCE DATA SYSTEM 139,407 29,907,000 0.24%
135 AGILENT TECHNOLOGIES INC 626,934 29,522,000 0.24%
136 LIONS GATE ENTERTAINMENT ORD 1,471,630 29,418,000 0.24%
137 KNOLL INC 1,285,025 29,363,000 0.24%
138 HILL ROM HLDGS INC 470,723 29,175,000 0.24%
139 O REILLY AUTOMOTIVE INC NEW 104,020 29,137,000 0.24%
140 LULULEMON ATHLETICA 476,795 29,075,000 0.23%
141 ALLEGIANT TRAVEL CO COM 219,183 28,947,000 0.23%
142 FIDELITY NATIONAL FINANCIAL 777,455 28,696,000 0.23%
143 STARZ COM SER A 919,410 28,676,000 0.23%
144 ZAYO GROUP HOLDINGS 964,135 28,644,000 0.23%
145 HURON CONSULTING 473,926 28,322,000 0.23%
146 MATSON INC COM 703,681 28,063,000 0.23%
147 EXPEDIA INC DEL 239,427 27,946,000 0.23%
148 MADISON SQUARE GARDEN CO NEW 157,883 26,747,000 0.22%
149 HENRY SCHEIN INC 164,110 26,747,000 0.22%
150 ESSENT GROUP LTD 975,050 25,946,000 0.21%
Page 3 of 5

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001085146-16-004733, filed 2016.11.10).

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.