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Institutional Investment Manager
PRIMECAP MANAGEMENT CO/CA/
PRIMECAP MANAGEMENT CO/CA/ (CIK: 0000763212), located at 177 East Colorado Blvd., Pasadena, CA. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q4)
Portfolio Summary: 260 holdings with a total value of $98,681,544,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 COMSCORE INC 4,150,532 192,709,000 0.20%
102 SHUTTERFLY INC 4,612,855 192,310,000 0.19%
103 Neustar Inc CL A 6,756,896 187,842,000 0.19%
104 ACTIVISION BLIZZARD INC 9,262,775 186,645,000 0.19%
105 F5 NETWORKS INC 1,401,585 182,851,000 0.19%
106 KEYSIGHT TECHNOLOGIES INC COM 5,184,812 175,091,000 0.18%
107 ELLIE MAE INCORPORATED 3,813,245 153,750,000 0.16%
108 DYAX CORP COM CVR 10,869,860 152,830,000 0.15%
109 SYMANTEC CORP 5,816,000 149,239,000 0.15%
110 PERKINELMER INC 3,260,285 142,572,000 0.14%
111 TUESDAY MORNING CORP 6,554,550 142,234,000 0.14%
112 APPLIED MATLS INC 5,685,355 141,679,000 0.14%
113 UNITED TECHNOLOGIES CORP 1,210,600 139,219,000 0.14%
114 PENTAIR PLC 2,095,781 139,202,000 0.14%
115 AECOM 4,422,484 134,311,000 0.14%
116 CURTISS WRIGHT CORP 1,865,874 131,712,000 0.13%
117 FLUIDIGM CORP DEL COM 3,726,832 125,706,000 0.13%
118 DEPHEID 2,310,100 125,069,000 0.13%
119 CSX CORP 3,407,700 123,461,000 0.13%
120 NATIONAL OILWELL VARCO INC 1,807,250 118,429,000 0.12%
121 APPLE INC 1,043,050 115,132,000 0.12%
122 Abaxis Inc 2,022,200 114,922,000 0.12%
123 BROADCOM CORP CL A 2,585,100 112,012,000 0.11%
124 IDEX CORP 1,433,440 111,579,000 0.11%
125 WATERS CORP 975,734 109,985,000 0.11%
126 NORWEGIAN CRUISE LINE HLDG L 2,345,400 109,671,000 0.11%
127 AFFYMETRIX INCOC-CAP STK CASH MGREFF 4/1/16 1 OLDUSD 14.00 PER SHARE 10,940,040 107,978,000 0.11%
128 CHARLES RIV LABS INTL INC 1,692,600 107,717,000 0.11%
129 FARO TECHNOLOGIES INC COM 1,697,500 106,399,000 0.11%
130 GILDAN ACTIVEWEAR INC 1,765,150 99,819,000 0.10%
131 ASCENA RETAIL GROUP INC COM 7,710,300 96,841,000 0.10%
132 URBAN OUTFITTERS INC 2,720,906 95,585,000 0.10%
133 NORFOLK SOUTHERN CORP 871,150 95,487,000 0.10%
134 FEI COMPANY 1,050,200 94,886,000 0.10%
135 RAMBUS INC DEL 8,362,372 92,739,000 0.09%
136 WILLIS TOWERS WATSON PLC 2,035,659 91,218,000 0.09%
137 INSULET CORPORATION 1,974,456 90,943,000 0.09%
138 DISCOVER FINL SVCS 1,339,100 87,698,000 0.09%
139 JABIL INC COM 3,907,000 85,290,000 0.09%
140 Tribune Publishing Co 3,712,521 85,017,000 0.09%
141 VMWARE INC 981,900 81,026,000 0.08%
142 CANADIAN PAC RY LTD 410,330 79,066,000 0.08%
143 EPIZYME INC COM 4,114,008 77,631,000 0.08%
144 V F CORP 1,035,980 77,595,000 0.08%
145 CABOT OIL & GAS CORP 2,615,200 77,436,000 0.08%
146 DOW CHEM CO 1,625,150 74,123,000 0.08%
147 IMMUNOGEN INC 12,127,073 73,975,000 0.07%
148 DESCARTES SYS GROUP INC 4,974,890 73,728,000 0.07%
149 EXXON MOBIL CORP 785,812 72,648,000 0.07%
150 MARKETAXESS HLDGS INC 1,003,420 71,955,000 0.07%
Page 3 of 6

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001104659-15-009526, filed 2015.02.12).

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.