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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 (2015Q2)
Original 13F HR (0001140361-15-032279) filed in 2015.08.14
#
Name
Shares
Value ($)
%
Options
Notes
51 GENOMIC HEALTH INC COM 1,183,000 32,876 1.10%
52 GLAXOSMITHKLINE PLC 1,376,722 57,340 1.91%
53 GW PHARMACEUTICALS PLC 361,953 44,462 1.48%
54 HEALTHWAYS INC 27,915,000 25,929 0.86% PRN
55 HEARTWARE INTL INC 31,264,000 33,215 1.11% PRN
56 HORIZON PHARMA PLC 12,259,875 425,908 14.19%
57 HUMANA INC 75,500 14,442 0.48%
58 Hercules Offshore Inc 2,465,042 29,531 0.98%
59 IMMUNOMEDICS INCORPORATED 2,505,872 10,174 0.34%
60 IMPRIVATA INC 958,152 15,675 0.52%
61 INFINITY PHARMACEUTICALS INC 2,465,129 26,993 0.90%
62 INOGEN INC COM 601,772 26,839 0.89%
63 INSMED INC 891,546 21,772 0.73%
64 INTEGRA LIFESCIENCES HLDGS CP COM NEW 59,468 4,006 0.13%
65 INVITAE CORP 166,666 2,480 0.08%
66 INVUITY INC 218,523 3,086 0.10%
67 IRONWOOD PHARMACEUTICALS INC 63,700 768 0.03%
68 JUNO THERAPEUTICS INC COM 183,149 9,767 0.33%
69 KEMPHARM INC 1,084,443 19,921 0.66%
70 KINDRED BIOSCIENCES INC 279,204 1,904 0.06%
71 KINDRED HEALTHCARE INC 70,114 1,423 0.05%
72 LOXO ONCOLOGY INC COM 1,450,151 26,146 0.87%
73 Life Technologies Corp 461,530 8,548 0.28%
74 MAZOR ROBOTICS LTD 261,000 3,474 0.12%
75 MCKESSON CORP 136,000 30,574 1.02%
76 MIRATI THERAPEUTICS INC COM 397,660 12,514 0.42%
77 MYLAN N V 871,000 59,106 1.97%
78 NANOSTRING TECHNOLOGIES INC 1,232,696 19,008 0.63%
79 NUVASIVE INC 450,272 21,334 0.71%
80 NXSTAGE MED INC COM 5,773,050 82,468 2.75%
81 Nivalis Therapeutics Inc 3,732,412 56,546 1.88%
82 ORTHOFIX INTL N V 457,699 15,159 0.51%
83 Oxford Immunotec Global PLC 561,226 7,773 0.26%
84 PACIFIC BIOSCIENCES CALIF IN 1,485,861 8,559 0.29%
85 PACIRA PHARMACEUTICALS INC 212,000 14,993 0.50%
86 PALATIN TECHNOLOGIES INC COM 2,000,000 1,780 0.06%
87 PERRIGO CO PLC 3,500 647 0.02%
88 PORTOLA PHARMACEUTICALS INC 329,837 15,024 0.50%
89 POZEN INC 44,583 460 0.02%
90 PSIVIDA CORP 102,823 388 0.01%
91 ProQR Therapeutics NV 209,398 3,491 0.12%
92 Proteon Therapeutics Inc 1,265,343 22,599 0.75%
93 RELYPSA INC 225,000 7,445 0.25%
94 RIGEL PHARMACEUTICAL INC 2,397,855 7,697 0.26%
95 RITE AID CORP 1,890,000 15,782 0.53%
96 Receptos Inc 2,000 380 0.01%
97 SAGE THERAPEUTICS INC 305,000 22,265 0.74%
98 SCYNEXIS INC 692,781 6,090 0.20%
99 SPARK THERAPEUTICS INCORPORATED 631,192 38,042 1.27%
100 SPECTRANETICS CORP 36,901,000 37,991 1.27% PRN
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