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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
51 EXELIXIS INC 400,000 1,416 0.06%
52 EXELIXIS INC 500,000 1,770 0.07% Call
53 FLAMEL TECHNOLOGIES SA SPONSORED ADR 5,258,475 70,464 2.88%
54 FURIEX PHARMACEUTICALS INC 13,340 1,161 0.05%
55 Foundation Medicine 342,921 11,100 0.45%
56 GENOCEA BIOSCIENCES INC 659,983 12,005 0.49%
57 HOLOGIC INC 42,500 914 0.04%
58 HOLOGIC INC SR STEP CV NT 42 37,516,000 38,347 1.57% PRN
59 HUMANA INC 1,280,000 144,282 5.89% Call
60 ILLUMINA INC 17,697 2,631 0.11%
61 IMMUNOMEDICS INCORPORATED 2,628,972 11,068 0.45%
62 INFINITY PHARMACEUTICALS INC 4,444,027 52,839 2.16%
63 INOGEN INC COM 357,269 5,899 0.24%
64 INSMED INC 2,016,147 38,387 1.57%
65 INTEGRA LIFESCIENCES HLDGS C 41,523,000 43,698 1.78% PRN
66 INTEGRA LIFESCIENCES HLDGS CP COM NEW 206,128 9,480 0.39%
67 INTERMUNE INC 1,583,942 53,015 2.16%
68 INTERMUNE INC 1,000,000 33,470 1.37% Call
69 INTERMUNE INC 40,295,000 51,373 2.10% PRN
70 INTRA-CELLULAR THERAPIES INC 171,437 3,117 0.13%
71 Intermune 7,500,000 19,618 0.80% PRN
72 KALOBIOS PHARMACEUTICALS INC 2,786,783 7,552 0.31%
73 KERYX BIOPHARMACEUTICALS INCORPORATED 1,403,105 23,909 0.98%
74 LABORATORY CORP AMER HLDGS 709,689 69,699 2.85%
75 LIPOSCIENCE INC 1,382,350 4,410 0.18%
76 MANNKIND CORP. 1,000,000 4,020 0.16% Put
77 MCKESSON CORP 163,000 28,781 1.18%
78 MEDIVATION INC 12,500 805 0.03%
79 MEI PHARMA INC 1,164,575 12,962 0.53%
80 MERCK & CO INC 477,200 27,091 1.11%
81 MERGE HEALTHCARE INC 959,580 2,341 0.10%
82 MOLINA HEALTHCARE INC 451,391 16,954 0.69%
83 Medtronic Inc 464,000 28,555 1.17%
84 NANOSPHERE INC 2,000,000 4,300 0.18%
85 NANOSTRING TECHNOLOGIES INC 391,105 8,076 0.33%
86 NEUROCRINE BIOSCIE COM USD0.001 77,994 1,256 0.05%
87 NOVADAQ TECHNOLOGIES INC 10,000 223 0.01%
88 NXSTAGE MED INC COM 3,801,175 48,427 1.98%
89 National Australia Bank ADR 17,500 855 0.03%
90 OCERA THERAPEUTICS INC 261,119 2,755 0.11%
91 ORTHOFIX INTL N V 591,431 17,832 0.73%
92 OVASCIENCE INC COM 1,672,549 14,953 0.61%
93 OXYGEN BIOTHERAPEUTICS INC 550,000 3,053 0.12%
94 PACIFIC BIOSCIENCES CALIF IN 5,406,110 28,923 1.18%
95 PALATIN TECHNOLOGIES INC COM 2,000,000 2,460 0.10%
96 PORTOLA PHARMACEUTICALS INC 769,848 19,939 0.81%
97 PROSENSA HLDG N V SHS USD 3,211,372 18,080 0.74%
98 PTC THERAPEUTICS INC 317,530 8,300 0.34%
99 QUEST DIAGNOSTICS INC 440,303 25,502 1.04%
100 Questcor 1,039,865 67,518 2.76%
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