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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 (2016Q4)
Portfolio Summary: 133 holdings with a total value of $10,200,965,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 SEATTLE GENETICS INC 45,711,856 2,412,215,000 23.65%
2 INCYTE 23,499,087 2,356,253,000 23.10%
3 ALEXION PHARMACEUTIC 6,543,295 800,572,000 7.85%
4 ACADIA PHARMACEUTICALS INC COM 25,819,768 744,642,000 7.30%
5 Incyte Corporation 274,500,000 558,650,000 5.48% PRN
6 Incyte Corporation 259,000,000 518,139,000 5.08% PRN
7 GENOMIC HEALTH INC COM 13,770,302 404,709,000 3.97%
8 BIOMARIN 4,806,483 398,169,000 3.90%
9 DBV TECHNOLOGIES 5,509,560 193,551,000 1.90%
10 Aquinox Pharmaceuticals Inc 10,536,092 173,951,000 1.71%
11 BEIGENE LTD 3,673,175 111,518,000 1.09%
12 ABBVIE INC 1,685,994 105,577,000 1.03%
13 BIOMARIN PHARMACEUTICAL INC 22,379,000 90,531,000 0.89% PRN
14 BIOCRYST PHARMACEUTICALS 10,963,944 69,402,000 0.68%
15 AMARIN CORP PLC 22,169,509 68,282,000 0.67%
16 BELLICUM PHARMACEUTICALS INC COM 4,865,647 66,270,000 0.65%
17 SPARK THERAPEUTICS INC 1,318,341 65,785,000 0.64%
18 ACORDA THERAPEUTICS 3,301,791 62,074,000 0.61%
19 ACHAOGEN INC COM 4,582,382 59,663,000 0.58%
20 ADVANCED ACCELERATOR APPLIC 2,167,137 57,993,000 0.57%
21 INVITAE CORP 7,288,300 57,869,000 0.57%
22 CERUS CORP 13,053,275 56,782,000 0.56%
23 EXELIXIS INC 3,003,569 44,783,000 0.44%
24 NEUROCRINE BIOSCIE COM USD0.001 895,422 34,653,000 0.34%
25 HERON THERAPEUTICS INC 2,383,569 31,225,000 0.31%
26 VERSARTIS INC COM 1,920,845 28,621,000 0.28%
27 Foamix Pharmaceuticals Ltd. 2,466,702 27,380,000 0.27%
28 PROGENICS PHARMACEUTICALS IN 3,150,808 27,223,000 0.27%
29 ACORDA THERAPEUTICS INC 35,083,000 26,570,000 0.26% PRN
30 MERUS N V 1,160,014 24,488,000 0.24%
31 XENCOR INC COM 872,072 22,953,000 0.23%
32 ARRAY BIOPHARMA INC COM 2,585,913 22,730,000 0.22%
33 BLUEBIRD BIO INCORPORATED 351,441 21,684,000 0.21%
34 Ascendis Pharma 1,023,266 20,711,000 0.20%
35 DERMA SCIENCES INC COM PAR .01 3,752,390 19,512,000 0.19%
36 AEGERION PHARMACEUTICALS INC 26,517,000 19,103,000 0.19% PRN
37 GALAPAGOS NV 259,894 16,683,000 0.16%
38 IDERA PHARMACEUTICALS INC 10,272,314 15,408,000 0.15%
39 AVEXIS INC COM 315,300 15,049,000 0.15%
40 INTELLIA THERAPEUTICS INC 1,062,120 13,924,000 0.14%
41 AIMMUNE THERAPEUTICS INC COM 673,908 13,781,000 0.14%
42 HALOZYME THERAPEUTICS INC 1,391,507 13,748,000 0.13%
43 BIOMARIN PHARMACEUTICAL INC 12,228,000 13,733,000 0.13% PRN
44 NEURODERM LTD 571,667 12,691,000 0.12%
45 SANGAMO BIOSCIENCES INCORPORATED 4,055,876 12,370,000 0.12%
46 AERIE PHARMACEUTICALS INC 299,356 11,331,000 0.11%
47 MIRATI THERAPEUTICS INC COM 2,269,198 10,779,000 0.11%
48 SAGE THERAPEUTICS 208,328 10,637,000 0.10%
49 ZOGENIX INC 838,809 10,192,000 0.10%
50 DERMIRA INC 326,428 9,901,000 0.10%
Page 1 of 3

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001144204-17-008836, filed 2017.02.14).

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.