Dark
Light
System
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 (2014Q1)
Original 13F HR (0001144204-14-031196) filed in 2014.05.15
#
Name
Shares
Value ($)
%
Options
Notes
51 ZOGENIX INC 2,350,400 6,687 0.08%
52 IDERA PHARMACEUTICALS INCORPORATED COM NEW 1,613,076 6,581 0.08%
53 XENCOR INC COM 542,363 6,362 0.08%
54 AERIE PHARMACEUTICALS INC COM 299,356 6,343 0.08%
55 NOVAVAX INC COM 1,223,362 5,542 0.07%
56 IRONWOOD PHARMACEUTICALS INC 446,160 5,497 0.07%
57 REGADO BIOSCIENCES INC 400,000 5,008 0.06%
58 LIGAND PHARMACEUTICALS INC 73,400 4,937 0.06%
59 ULTRAGENYX PHARMACEUTICAL INC COM 100,000 4,889 0.06%
60 EPIZYME INC COM 214,012 4,873 0.06%
61 OSIRIS THERAPEUTICS INC NEW COM 361,530 4,747 0.06%
62 IGNYTA INC COM 571,000 4,739 0.06%
63 PORTOLA PHARMACEUTICALS INC 182,591 4,729 0.06%
64 CYTRX CORP 1,350,000 4,712 0.06%
65 BLUEBIRD BIO INC COM 198,260 4,508 0.06%
66 CELSUS THERAPEUTICS PLC 673,887 4,374 0.06%
67 RETROPHIN INC 197,178 4,194 0.05%
68 IONIS PHARMACEUTICAL 96,303 4,161 0.05%
69 BIODELIVERY SCIENCES INTL IN 421,005 3,553 0.05%
70 FURIEX PHARMACEUTICALS INC 40,309 3,507 0.04%
71 ENANTA PHARMACEUTICALS INC 80,957 3,237 0.04%
72 MACROGENICS INC 96,165 2,676 0.03%
73 LA JOLLA PHARMACEUTICAL CO 221,631 2,394 0.03%
74 SYNTA PHARMACEUTICALS CORP 500,000 2,155 0.03%
75 MAST THERAPEUTICS INC COM 3,000,000 2,040 0.03%
76 RIGEL PHARMACEUTICAL INC 481,972 1,870 0.02%
77 ORASURE TECHNOLOGIES INC 234,664 1,870 0.02%
78 KARYOPHARM THERAPEUTICS INC COM 59,095 1,825 0.02%
79 AUXILIUM PHARMACEUTICALS INC 58,544 1,591 0.02%
80 ACHAOGEN INC COM 100,000 1,546 0.02%
81 ACHILLION PHARMACEUTICALS IN 438,337 1,442 0.02%
82 OPHTHOTECH CORP 36,776 1,314 0.02%
83 CATALYST PHARMACEUTICALS INC 569,853 1,288 0.02%
84 ZIOPHARM ONCOLOGY INC 244,619 1,120 0.01%
85 Receptos Inc 23,900 1,002 0.01%
86 AMICUS THERAPEUTICS INC COM 481,697 997 0.01%
87 ACCELERON PHARMA INC 28,765 992 0.01%
88 TESARO INCORPORATED 31,218 920 0.01%
89 GERON CORP 402,629 837 0.01%
90 ALNYLAM PHARMACEUTICALS INC 11,600 779 0.01%
91 VENTRUS BIOSCIENCES INC 417,690 535 0.01%
92 UNIQURE NV 30,672 477 0.01%
93 FIVE PRIME THERAPEUTICS INC 19,823 390 0.00%
94 SALIX PHARMACEUTICALS INC 3,621 375 0.00%
95 CHEMOCENTRYX INC 50,000 332 0.00%
96 CYCLACEL PHARMACEUTICALS INC 13,253 113 0.00%
97 Salix Pharmaceuticals Inc 05/15/2015 2.750% 219,440,000 491,957 6.25% PRN
98 Incyte Corporation 274,500,000 350,417 4.45% PRN
99 Incyte Corporation 259,000,000 326,745 4.15% PRN
100 INCYTE CORP SR NT CONV 4.750% 10/01/15 B/EDTD 03/30/10 0221 UBS FINANCIAL SERVICES INC. A/C MR06471 40,446,000 245,887 3.13% PRN
Page 2 of 3