Dark
Light
System
Institutional Investment Manager
DEERFIELD MANAGEMENT COMPANY, L.P.
DEERFIELD MANAGEMENT COMPANY, L.P. (CIK: 0001009258) incorporated in Delaware, located at 345 Park Avenue South, 12th Floor, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q1)
Original 13F HR (0001140361-14-021676) filed in 2014.05.15
#
Name
Shares
Value ($)
%
Options
Notes
101 BIOGEN INC 11,750 3,594 0.15%
102 INTRA-CELLULAR THERAPIES INC 171,437 3,117 0.13%
103 OXYGEN BIOTHERAPEUTICS INC 550,000 3,053 0.12%
104 Sunesis Pharmaceuticals I 455,741 3,012 0.12%
105 TARGACEPT INC 617,000 2,931 0.12%
106 OCERA THERAPEUTICS INC 261,119 2,755 0.11%
107 ILLUMINA INC 17,697 2,631 0.11%
108 TONIX PHARMACEUTICALS HOLDING 244,524 2,545 0.10%
109 PALATIN TECHNOLOGIES INC 2,000,000 2,460 0.10%
110 THERAPEUTICSMD INC 376,049 2,373 0.10%
111 MERGE HEALTHCARE INC 959,580 2,341 0.10%
112 EXELIXIS INC 500,000 1,770 0.07% Call
113 REGENERON PHARMACEUTICALS 4,799 1,441 0.06%
114 EXELIXIS INC 400,000 1,416 0.06%
115 AGILENT TECHNOLOGIES INC 25,000 1,398 0.06%
116 NEUROCRINE BIOSCIENCES INC 77,994 1,256 0.05%
117 FURIEX PHARMACEUTICALS INC 13,340 1,161 0.05%
118 HOLOGIC INC 42,500 914 0.04%
119 Mylan Laboratories Inc 17,500 855 0.03%
120 MEDIVATION INC 12,500 805 0.03%
121 AQUINOX PHARMACEUTICALS INC 62,387 794 0.03%
122 SYNERON MEDICAL LTD 34,518 430 0.02%
123 ACHILLION PHARMACEUTICALS IN 92,804 305 0.01%
124 NOVADAQ TECHNOLOGIES INC 10,000 223 0.01%
Page 3 of 3