Dark
Light
System
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
51 ICON PLC 1,226,480 87,043 0.62%
52 ASSURANT INC 1,101,299 87,014 0.62%
53 TJX COS INC NEW 1,217,158 86,929 0.62%
54 CELANESE CORP DEL 1,466,015 86,744 0.61%
55 SCHWAB CHARLES CORP 3,014,381 86,091 0.61%
56 COSTAR GROUP 475,321 82,259 0.58%
57 MIDDLEBY CORP 776,849 81,717 0.58%
58 TEAM HEALTH HOLDINGS INC 1,489,921 80,500 0.57%
59 CARDINAL HEALTH INC 1,045,361 80,305 0.57%
60 SERVICE CORP INTL 2,954,570 80,069 0.57%
61 TEXTRON INC 2,124,698 79,974 0.57%
62 THERMO FISHER SCIENTIFIC INC 649,984 79,480 0.56%
63 ALIGN TECHNOLOGY INC 1,399,377 79,429 0.56%
64 LAM RESEARCH CORP 1,207,589 78,892 0.56%
65 IHS INC A 671,617 77,908 0.55%
66 STARWOOD PPTY TR INC COM 3,753,721 77,026 0.55%
67 AMAG PHARMACEUTICALS INC 1,886,905 74,967 0.53%
68 SABRE CORP 2,752,950 74,825 0.53%
69 VAIL RESORTS INC 711,496 74,479 0.53%
70 E M C CORP MASS COM 3,059,298 73,913 0.52%
71 ON SEMICONDUCTOR CORP 7,668,791 72,087 0.51%
72 ALLSCRIPTS HEALTHCARE SOLUTN 5,804,292 71,973 0.51%
73 BANKUNITED INC 1,998,489 71,446 0.51%
74 VULCAN MATLS CO 772,674 68,923 0.49%
75 SIGNET JEWELERS LIMITED 496,411 67,576 0.48%
76 ALLIANCE DATA SYSTEMS CORP 254,842 65,999 0.47%
77 QLIK TECHNOLOGIES INC COM 1,744,165 63,575 0.45%
78 GENESEE AND WYOMING INC INC CL A 1,035,545 61,180 0.43%
79 WABCO HLDGS INC 566,125 59,347 0.42%
80 SNAP ON INC 392,101 59,184 0.42%
81 RED HAT INC 822,556 59,125 0.42%
82 MANPOWERGROUP INC 720,289 58,984 0.42%
83 AVAGO TECHNOLOGIES LTD SHS 465,088 58,141 0.41%
84 FIRST REP BK SAN FRANCISCO C 914,620 57,411 0.41%
85 METTLER-TOLEDO 200,654 57,134 0.40%
86 PACIRA PHARMACEUTICALS INC 1,389,164 57,095 0.40%
87 SPLUNK INC 1,022,402 56,590 0.40%
88 ARIAD PHARMACEUTICALS ORD (NMS) 9,633,464 56,259 0.40%
89 SANOFI SPOND FUNSPONSORED ADR 6,511,561 55,413 0.39%
90 RPM INTL INC 1,316,354 55,142 0.39%
91 COMMUNITY HEALTH SYS INC NEW 1,280,817 54,781 0.39%
92 NETFLIX INC 515,402 53,220 0.38%
93 RAYMOND JAMES FINANC 1,058,934 52,555 0.37%
94 BRUNSWICK CORP 1,090,078 52,204 0.37%
95 SIX FLAGS ENTMT CORP NEW 1,130,643 51,761 0.37%
96 WRIGHT MEDICAL GROUP NV 2,402,633 50,503 0.36%
97 JACK IN THE BOX INC 641,178 49,396 0.35%
98 TEMPUR SEALY INTL INC 674,988 48,214 0.34%
99 EASTMAN CHEM CO 742,033 48,024 0.34%
100 CBRE GROUP INC 1,450,307 46,410 0.33%
Page 2 of 6