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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 (2016Q4)
Portfolio Summary: 253 holdings with a total value of $11,405,054,000.
#
Name
Shares
Value ($)
%
Options
Notes
201 CARDIOME PHARMA CORP 5,078,393 14,016,000 0.12%
202 INPHI CORPORATION 297,147 13,259,000 0.12%
203 COMCAST CORP NEW 186,070 12,848,000 0.11%
204 KLX INC COM 270,240 12,191,000 0.11%
205 ACLARIS THERAPEUTICS INC COM 448,215 12,165,000 0.11%
206 COMMUNITY HEALTHCARE TR INC COM 510,830 11,764,000 0.10%
207 MARTEN TRANS LTD COM 490,554 11,430,000 0.10%
208 MASTEC INC 291,906 11,165,000 0.10%
209 COGNIZANT TECHNOLOGY SOLUTIO 199,210 11,162,000 0.10%
210 GENESCO INC COM 165,570 10,282,000 0.09%
211 SUN CMNTYS INC 134,021 10,267,000 0.09%
212 SKYWORKS SOLUTIONS INC 134,910 10,072,000 0.09%
213 MGIC INVT CORP WIS 857,120 8,734,000 0.08%
214 ALDER BIOPHARMACEUTICALS INC 398,315 8,285,000 0.07%
215 CISCO SYS INC 270,885 8,186,000 0.07%
216 HENRY JACK & ASSOC INC 91,464 8,120,000 0.07%
217 JPMORGAN CHASE & CO 92,810 8,009,000 0.07%
218 LOCKHEED MARTIN CORP 26,366 6,590,000 0.06%
219 PENSKE AUTOMOTIVE GRP INC 125,155 6,488,000 0.06%
220 MARINE HARVEST ASA 351,965 6,381,000 0.06%
221 ARCHER DANIELS MIDLAND CO 137,710 6,286,000 0.06%
222 DELTA AIRLINES INC DEL 113,230 5,570,000 0.05%
223 FEDEX CORP 27,920 5,199,000 0.05%
224 WESTERN DIGITAL CORP 76,140 5,174,000 0.05%
225 KIMBERLY CLARK CORP 41,427 4,728,000 0.04%
226 ISHARES RUSSELL 2000 GROWTH ETF 30,125 4,637,000 0.04%
227 ORION ENGINEERED CARBONS S A 218,435 4,117,000 0.04%
228 BORGWARNER INC 98,270 3,876,000 0.03%
229 MICROCHIP TECHNOLOGY 57,120 3,664,000 0.03%
230 ISHARES TR 23,893 2,506,000 0.02%
231 BAXTER INTL INC 45,355 2,011,000 0.02%
232 VERIZON COMMUNICATIONS INC 35,325 1,886,000 0.02%
233 ISHARES TR 16,205 1,578,000 0.01%
234 CHEMTURA CORP 42,730 1,419,000 0.01%
235 WASTE CONNECTIONS INC 14,625 1,149,000 0.01%
236 KIRBY CORP 16,590 1,103,000 0.01%
237 AFFILIATED MANAGERS GROUP 5,310 772,000 0.01%
238 CVS HEALTH CORP 9,500 750,000 0.01%
239 MERCK & CO INC 12,159 716,000 0.01%
240 SCHLUMBERGER LTD 8,424 707,000 0.01%
241 3M CO 3,250 580,000 0.01%
242 CSX CORP 15,000 539,000 0.00%
243 ISHARES TR 11,330 486,000 0.00%
244 CAMPBELL SOUP CO 6,000 363,000 0.00%
245 NEW MEDIA INVT GROUP INC COM 21,500 344,000 0.00%
246 INTERNATIONAL BUSINESS MACHS 2,000 332,000 0.00%
247 HUDSON TECHNOLOGIES INC 40,000 320,000 0.00%
248 STATE STR CORP 3,840 298,000 0.00%
249 VENTAS INC 4,719 295,000 0.00%
250 CONSTELLIUM NV CL A 49,900 294,000 0.00%
Page 5 of 6

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001085146-17-000444, filed 2017.02.10).

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.