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Institutional Investment Manager
BAKER BROS. ADVISORS LP
BAKER BROS. ADVISORS LP (CIK: 0001263508) incorporated in Delaware, located at 860 Washington Street, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q1)
Portfolio Summary: 134 holdings with a total value of $9,482,104,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 INCYTE 23,498,460 1,702,933,000 17.96%
2 SEATTLE GENETICS INC 43,235,267 1,517,126,000 16.00%
3 ALEXION PHARMACEUTIC 6,542,599 910,861,000 9.61%
4 ABBVIE INC 14,373,538 821,016,000 8.66%
5 ACADIA PHARMACEUTICALS INC COM 24,213,838 677,019,000 7.14%
6 Incyte Corporation 274,500,000 432,150,000 4.56% PRN
7 Incyte Corporation 259,000,000 397,943,000 4.20% PRN
8 BIOMARIN 4,806,483 396,439,000 4.18%
9 GENOMIC HEALTH INC COM 13,659,832 338,354,000 3.57%
10 Anacor Pharmaceuticals Inc 5,122,375 273,791,000 2.89%
11 DBV TECHNOLOGIES 5,509,560 179,336,000 1.89%
12 ACORDA THERAPEUTICS 3,661,082 96,836,000 1.02%
13 BIOMARIN PHARMACEUTICAL INC 22,379,000 89,825,000 0.95% PRN
14 CLOVIS ONCOLOGY INC NOTE 129,300,000 87,801,000 0.93% PRN
15 GILEAD SCIENCES 20,944,000 85,863,000 0.91% PRN
16 CERUS CORP 13,553,275 80,371,000 0.85%
17 ANACOR PHARMACEUTICALS INC 42,000,000 75,337,000 0.79% PRN
18 XENOPORT INC 100,000,000 73,436,000 0.77% PRN
19 MIRATI THERAPEUTICS INC COM 3,268,556 69,947,000 0.74%
20 ACORDA THERAPEUTICS INC 77,083,000 68,456,000 0.72% PRN
21 Aquinox Pharmaceuticals Inc 7,752,487 68,377,000 0.72%
22 INVITAE CORP 6,554,967 67,057,000 0.71%
23 BEIGENE LTD 1,912,680 56,061,000 0.59%
24 HERON THERAPEUTICS INC 2,907,784 55,219,000 0.58%
25 BELLICUM PHARMACEUTICALS INC COM 4,865,647 45,494,000 0.48%
26 BIOCRYST PHARMACEUTICALS 15,010,534 42,480,000 0.45%
27 IMMUNOGEN INCORPORATED 4,452,445 37,935,000 0.40%
28 SPARK THERAPEUTICS INC 1,262,382 37,253,000 0.39%
29 NEUROCRINE BIOSCIE COM USD0.001 895,422 35,414,000 0.37%
30 VERSARTIS INC COM 3,199,559 25,660,000 0.27%
31 SANGAMO BIOSCIENCES INCORPORATED 4,055,876 24,538,000 0.26%
32 ADVANCED ACCELERATOR APPLIC 615,033 21,538,000 0.23%
33 Exelexis 20,000,000 19,775,000 0.21% PRN
34 ACHILLION PHARMACEUTICALS INC COM 2,475,515 19,111,000 0.20%
35 INSMED INC COM PAR .01 1,500,000 19,005,000 0.20%
36 PROGENICS PHARMACEUTICALS IN 4,350,808 18,970,000 0.20%
37 HALOZYME THERAPEUTICS INC 1,931,057 18,287,000 0.19%
38 TG THERAPEUTICS INC COM 2,003,991 17,074,000 0.18%
39 INTRA CELLULAR THERAPIES INC COM 609,166 16,935,000 0.18%
40 XENOPORT INC 3,475,672 15,675,000 0.17%
41 MEDIVATION INC 329,876 15,168,000 0.16%
42 BLUEBIRD BIO INCORPORATED 352,943 15,000,000 0.16%
43 Foamix Pharmaceuticals Ltd. 2,241,702 14,616,000 0.15%
44 BIOMARIN PHARMACEUTICAL INC 12,228,000 14,125,000 0.15% PRN
45 IDERA PHARMACEUTICALS INC 6,990,189 13,841,000 0.15%
46 AEGERION PHARMACEUTICALS INC 26,517,000 13,526,000 0.14% PRN
47 ARRAY BIOPHARMA INC COM 4,310,666 12,716,000 0.13%
48 GALAPAGOS NV 303,394 12,688,000 0.13%
49 AGIOS PHARMACEUTICALS INC 307,915 12,501,000 0.13%
50 NOVAVAX INC COM 2,379,254 12,277,000 0.13%
Page 1 of 3

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001144204-16-102596, filed 2016.05.16).

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.