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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
1 CONSOL ENERGY INC 10,196,831 99,929 0.71%
2 ARIAD PHARMACEUTICALS ORD (NMS) 9,633,464 56,259 0.40%
3 ON SEMICONDUCTOR CORP 7,668,791 72,087 0.51%
4 SANOFI SPOND FUNSPONSORED ADR 6,511,561 55,413 0.39%
5 ALLSCRIPTS HEALTHCARE SOLUTN 5,804,292 71,973 0.51%
6 TEVA PHARMACEUTICAL INDS LTD 5,555,430 313,660 2.22%
7 APPLE INC 3,989,366 440,027 3.12%
8 STARWOOD PPTY TR INC COM 3,753,721 77,026 0.55%
9 TWENTY FIRST CENTY FOX INC 3,453,940 93,187 0.66%
10 UNITED CONTL HLDGS INC 3,326,811 176,487 1.25%
11 COMCAST CORP NEW 3,263,183 185,610 1.31%
12 CARDIOME PHARMA CORP 3,222,395 27,197 0.19%
13 DOW CHEM CO 3,145,503 133,369 0.94%
14 COCA COLA ENTERPRISES INC NE COM 3,115,441 150,632 1.07%
15 E M C CORP MASS COM 3,059,298 73,913 0.52%
16 BGC PARTNERS INC 3,050,725 25,077 0.18%
17 SCHWAB CHARLES CORP 3,014,381 86,091 0.61%
18 ABBVIE INC 2,970,476 161,624 1.14%
19 JARDEN CORP 2,959,677 144,669 1.02%
20 SERVICE CORP INTL 2,954,570 80,069 0.57%
21 NIELSEN HLDGS PLC 2,758,901 122,688 0.87%
22 SABRE CORP 2,752,950 74,825 0.53%
23 STERIS PLC 2,744,784 178,329 1.26%
24 VISA INC 2,741,503 190,973 1.35%
25 SALESFORCE COM INC 2,702,110 187,607 1.33%
26 LOWES COS INC 2,647,293 182,451 1.29%
27 FACEBOOK INC 2,598,754 233,628 1.65%
28 VALERO ENERGY CORP NEW 2,598,037 156,142 1.11%
29 WRIGHT MEDICAL GROUP NV 2,402,633 50,503 0.36%
30 CELGENE CORP 2,396,820 259,264 1.84%
31 FORTINET INC 2,368,504 100,614 0.71%
32 JAZZ PHARMACEUTICALS PLC 2,298,726 305,294 2.16%
33 ANALOG DEVICES INC 2,289,431 129,147 0.91%
34 DELPHI AUTOMOTIVE PLC 2,200,957 167,361 1.18%
35 HUNTSMAN CORP 2,199,355 21,312 0.15%
36 BUILDERS FIRSTSOURCE 2,154,750 27,322 0.19%
37 TEXTRON INC 2,124,698 79,974 0.57%
38 V F CORP 2,122,529 144,778 1.02%
39 KNOLL INC 2,079,962 45,718 0.32%
40 YUM BRANDS INC 2,027,357 162,087 1.15%
41 BANKUNITED INC 1,998,489 71,446 0.51%
42 TOTAL SYS SVCS INC 1,993,829 90,580 0.64%
43 VERTEX PHARMACEUTICALS INC 1,961,599 204,281 1.45%
44 DOLLAR TREE INC 1,899,014 126,588 0.90%
45 AMAG PHARMACEUTICALS INC 1,886,905 74,967 0.53%
46 STEELCASE INC 1,877,299 34,561 0.24%
47 AMERICAN EAGLE OUTFITTERS NE 1,864,200 29,137 0.21%
48 SERVICENOW INC 1,819,444 126,360 0.89%
49 STATE STR CORP 1,817,315 122,142 0.86%
50 QLIK TECHNOLOGIES INC COM 1,744,165 63,575 0.45%
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