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 (2014Q3)
Original 13F HR (0001085146-14-002222) filed in 2014.11.12
#
Name
Shares
Value ($)
%
Options
Notes
1 3M CO 1,894 268 0.00%
2 A10 NETWORKS INC 443,560 4,041 0.02%
3 ABBOTT LABS 54,900 2,283 0.01%
4 ABBVIE INC 3,347,675 193,362 1.18%
5 ABERCROMBIE & FITCH CO 689,420 25,054 0.15%
6 ADVANCED ENERGY INDS COM 799,600 15,024 0.09%
7 AEGERION PHARMACEUTICALS INC 3,475,306 116,006 0.71%
8 AIR PRODS & CHEMS INC 3,320 432 0.00%
9 AKAMAI TECHNOLOGIES INC 422,640 25,274 0.15%
10 ALBEMARLE CORP 249,905 14,719 0.09%
11 ALEXANDER & BALDWIN INC NEW COM 1,779,838 64,021 0.39%
12 ALIGN TECHNOLOGY INC 1,051,795 54,357 0.33%
13 ALLERGAN PLC 1,052,530 253,954 1.55%
14 ALLIANCE DATA SYSTEMS CORP 273,096 67,802 0.41%
15 ALLISON TRANSMISSION HLDGS INC COM 1,338,460 38,133 0.23%
16 ALLSCRIPTS HEALTHCARE SOLUTN 6,124,374 82,158 0.50%
17 AMAG PHARMACEUTICALS INC 1,231,720 39,304 0.24%
18 AMC NETWORKS INC CL A 312,513 18,257 0.11%
19 AMERICAN INTL GROUP INC 152,040 8,213 0.05%
20 AMERICAN WTR WKS CO INC NEW 46,950 2,264 0.01%
21 AMERIPRISE FINL INC 467,436 57,672 0.35%
22 AMETEK INC NEW 3,577,219 179,612 1.10%
23 ANALOG DEVICES INC 44,360 2,195 0.01%
24 AON PLC 403,648 35,388 0.22%
25 APPLE INC 4,817,337 485,347 2.96%
26 ARCBEST CORP COM 16,255 606 0.00%
27 ARUBA NETWORKS INC 2,680,440 57,844 0.35%
28 ASBURY AUTOMOTIVE GROUP INC COM 542,458 34,945 0.21%
29 ATMEL CORP 1,734,420 14,014 0.09%
30 AUTODESK INC 1,025,219 56,490 0.34%
31 AUTOMATIC DATA PROCESSING IN 26,415 2,195 0.01%
32 AVANIR PHARMACEUTICALS INC CL 2,439,490 29,079 0.18%
33 Abaxis Inc 12,800 649 0.00%
34 B & G FOODS INC NEW COM 1,559,607 42,967 0.26%
35 B/E AEROSPACE INC 636,651 53,440 0.33%
36 BENCHMARK ELECTRS INC 828,514 18,401 0.11%
37 BERKSHIRE HATHAWAY INC DEL 4,213 582 0.00%
38 BGC PARTNERS INC 1,975,910 14,681 0.09%
39 BIOGEN INC 690 228 0.00%
40 BLACKSTONE GROUP L P 58,410 1,839 0.01%
41 BOEING CO 1,700 217 0.00%
42 BOSTON PROPERTIES INC 2,200 255 0.00%
43 BRIGHT HORIZONS FAM SOL IN DEL COM 652,965 27,464 0.17%
44 BRISTOL MYERS SQUIBB CO 90,170 4,615 0.03%
45 BROOKDALE SR LIVING INC 1,731,170 55,778 0.34%
46 CADENCE DESIGN SYSTEM INC 1,035,681 17,824 0.11%
47 CARDINAL HEALTH INC 1,682,095 126,023 0.77%
48 CARDIOME PHARMA CORP 730,926 6,527 0.04%
49 CARDIOVASCULAR SYS INC DEL COM 18,300 432 0.00%
50 CATERPILLAR INC 1,191,194 117,964 0.72%
Page 1 of 6