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Institutional Investment Manager
VIKING GLOBAL INVESTORS LP
VIKING GLOBAL INVESTORS LP (CIK: 0001103804) incorporated in Delaware, located at 600 Washington Blvd., Stamford, CT. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q2)
Portfolio Summary: 56 holdings with a total value of $26,470,175,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 WALGREENS BOOTS ALLIANCE INC 24,625,113 2,079,345,000 7.86%
2 ALLERGAN PLC 6,804,034 2,064,752,000 7.80%
3 ISHARES NASDAQ BIOTECHNOLOGY ETF 2,736,152 1,477,632,000 5.58%
4 LYONDELLBASELL INDUSTRIES N 10,726,384 1,110,395,000 4.19%
5 ILLUMINA INC 4,968,956 1,085,021,000 4.10%
6 VALEANT PHARMACEUTICALS INTL 4,616,738 1,025,608,000 3.87%
7 AMAZON COM INC 2,282,561 990,837,000 3.74%
8 PIONEER NAT RES CO 6,391,252 886,403,000 3.35%
9 CANADIAN PAC RY LTD 5,276,195 845,405,000 3.19%
10 MOHAWK INDS 4,311,113 822,991,000 3.11%
11 AIR PRODS & CHEMS INC 5,905,719 808,080,000 3.05%
12 CHENIERE ENERGY INC 11,324,392 784,327,000 2.96%
13 MASTERCARD INCORPORATED 8,218,696 768,284,000 2.90%
14 METLIFE INC 11,780,357 659,582,000 2.49%
15 SEALED AIR CORP NEW 12,818,029 658,590,000 2.49%
16 MALLINCKRODT PUB LTD CO SHS 5,415,671 637,533,000 2.41%
17 AVAGO TECHNOLOGIES LTD SHS 4,769,014 633,945,000 2.39%
18 HUMANA 3,206,839 613,404,000 2.32%
19 GOOGLE INC 1,147,549 597,311,000 2.26%
20 ALIBABA GROUP HLDG LTD 6,041,685 497,049,000 1.88%
21 ENVISION HEALTHCARE HLDGS INC 12,303,668 485,749,000 1.84%
22 CIGNA CORPORATION 2,914,815 472,200,000 1.78%
23 CROWN CASTLE 5,530,352 444,087,000 1.68%
24 KANSAS CITY SOUTHERN 4,803,641 438,092,000 1.66%
25 CTRIP COM INTL LTD 5,764,514 418,619,000 1.58%
26 DAVITA INC 4,968,551 394,851,000 1.49%
27 AETNA INC NEW 3,097,599 394,820,000 1.49%
28 BANK NEW YORK MELLON CORP 8,413,291 353,106,000 1.33%
29 ANTHEM INC 1,906,701 312,966,000 1.18%
30 WHITING PETE CORP NEW 8,653,431 290,755,000 1.10%
31 TWENTY FIRST CENTY FOX INC 8,093,383 263,399,000 1.00%
32 BAIDU INC 1,285,451 255,908,000 0.97%
33 VERTEX PHARMACEUT 1,805,186 222,904,000 0.84%
34 Receptos Inc 1,156,900 219,869,000 0.83%
35 BIOGEN INC 513,444 207,401,000 0.78%
36 AMERIPRISE FINL INC 1,614,743 201,730,000 0.76%
37 AON PLC 1,912,946 190,682,000 0.72%
38 AVIS BUDGET GROUP 4,320,377 190,442,000 0.72%
39 UNIVERSAL HLTH SVCS INC 1,220,743 173,468,000 0.66%
40 CITIGROUP INC 2,937,290 162,256,000 0.61%
41 MCKESSON CORP 625,568 140,634,000 0.53%
42 NXP SEMICONDUCTORS N V 1,418,054 139,253,000 0.53%
43 LEGG MASON INC 2,549,058 131,353,000 0.50%
44 BALL CORP 1,832,789 128,570,000 0.49%
45 Esperion Therapeutics Inc 1,395,107 114,064,000 0.43%
46 QUNAR CAYMAN IS LTD SPNS ADR CL B 2,531,989 108,496,000 0.41%
47 TRANSDIGM GROUP INC COM 458,176 102,938,000 0.39%
48 CAPITAL ONE FINL CORP 1,162,593 102,273,000 0.39%
49 ALLSTATE CORP 1,433,280 92,977,000 0.35%
50 AMERICAN INTL GROUP INC 1,314,809 81,281,000 0.31%
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Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001103804-15-000048, filed 2015.08.14).

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.