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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)
Portfolio Summary: 120 holdings with a total value of $3,001,745,000.
#
Name
Shares
Value ($)
%
Options
Notes
51 IMMUNOMEDICS INCORPORATED 2,505,872 10,174,000 0.34%
52 AXOGEN INC 3,726,439 11,701,000 0.39%
53 TONIX PHARMACEUTICALS HOLDING 1,315,551 11,800,000 0.39%
54 MIRATI THERAPEUTICS INC COM 397,660 12,514,000 0.42%
55 AAC HLDGS INC 303,027 13,200,000 0.44%
56 GENESIS HEALTHCARE INC 2,119,616 13,989,000 0.47%
57 TRUPANION INC 1,715,211 14,133,000 0.47%
58 HUMANA INC 75,500 14,442,000 0.48%
59 PACIRA PHARMACEUTICALS INC 212,000 14,993,000 0.50%
60 PORTOLA PHARMACEUTICALS INC 329,837 15,024,000 0.50%
61 EXELIXIS INC 4,000,000 15,040,000 0.50% Put
62 AKORN INCORPORATED 344,667 15,048,000 0.50%
63 ORTHOFIX INTL N V 457,699 15,159,000 0.51%
64 IMPRIVATA INC 958,152 15,675,000 0.52%
65 RITE AID CORP 1,890,000 15,782,000 0.53%
66 NANOSTRING TECHNOLOGIES INC 1,232,696 19,008,000 0.63%
67 KEMPHARM INC 1,084,443 19,921,000 0.66%
68 ALIMERA SCIENCES INC 4,420,580 20,379,000 0.68%
69 SYNERON MEDICAL LTD 1,973,945 20,963,000 0.70%
70 NUVASIVE INC 450,272 21,334,000 0.71%
71 INSMED INC 891,546 21,772,000 0.73%
72 SAGE THERAPEUTICS INC 305,000 22,265,000 0.74%
73 Proteon Therapeutics Inc 1,265,343 22,599,000 0.75%
74 ANTHEM INC 140,806 23,112,000 0.77%
75 ACCURAY INC 24,100,000 24,565,000 0.82% PRN
76 WEBMD HEALTH CORP NOTE 1.50012/0 23,000,000 24,636,000 0.82% PRN
77 BOSTON SCIENTIFIC CORP 1,405,348 24,875,000 0.83%
78 HEALTHWAYS INC 27,915,000 25,929,000 0.86% PRN
79 LOXO ONCOLOGY INC COM 1,450,151 26,146,000 0.87%
80 INOGEN INC COM 601,772 26,839,000 0.89%
81 INFINITY PHARMACEUTICALS INC 2,465,129 26,993,000 0.90%
82 ENDOCHOICE HLDGS INC 1,797,709 29,393,000 0.98%
83 Hercules Offshore Inc 2,465,042 29,531,000 0.98%
84 ZELTIQ AESTHETICS INC 1,016,453 29,955,000 1.00%
85 EDWARDS LIFESCIENCES CORP 211,850 30,174,000 1.01%
86 MCKESSON CORP 136,000 30,574,000 1.02%
87 FLUIDIGM CORP DEL 35,000,000 30,952,000 1.03% PRN
88 XENCOR INC COM 1,411,000 31,000,000 1.03%
89 Arena Pharmaceuticals, Inc 6,983,710 32,404,000 1.08%
90 GENOMIC HEALTH INC COM 1,183,000 32,876,000 1.10%
91 GALAPAGOS NV 642,608 33,094,000 1.10%
92 HEARTWARE INTL INC 31,264,000 33,215,000 1.11% PRN
93 ADEPTUS HEALTH INC 364,000 34,576,000 1.15%
94 ZAFGEN INC COM 1,007,614 34,894,000 1.16%
95 ENDOLOGIX INC 2,449,897 37,581,000 1.25%
96 SPECTRANETICS CORP 36,901,000 37,991,000 1.27% PRN
97 SPARK THERAPEUTICS INCORPORATED 631,192 38,042,000 1.27%
98 TEVA PHARMACEUTICAL INDS LTD 646,000 38,179,000 1.27%
99 ANTARES PHARMA INC 18,389,789 38,251,000 1.27%
100 AERIE PHARMACEUTICALS INC COM 2,211,644 39,036,000 1.30%
Page 2 of 3

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001140361-15-032279, filed 2015.08.14).

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.