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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
1 ALLSCRIPTS HEALTHCARE SOLUTN 100,750,000 103,524 3.45% PRN
2 ARRAY BIOPHARMA INC 3 06/01/2020 45,000,000 56,942 1.90% PRN
3 ENDOLOGIX INC 40,941,000 39,784 1.33% PRN
4 SPECTRANETICS CORP 36,901,000 37,991 1.27% PRN
5 FLUIDIGM CORP DEL 35,000,000 30,952 1.03% PRN
6 HEARTWARE INTL INC 31,264,000 33,215 1.11% PRN
7 HEALTHWAYS INC 27,915,000 25,929 0.86% PRN
8 ACCURAY INC 24,100,000 24,565 0.82% PRN
9 WEBMD HEALTH CORP NOTE 1.50012/0 23,000,000 24,636 0.82% PRN
10 ANTARES PHARMA INC 18,389,789 38,251 1.27%
11 HORIZON PHARMA PLC 12,259,875 425,908 14.19%
12 ARRAY BIOPHARMA INC 9,529,361 68,707 2.29%
13 Arena Pharmaceuticals, Inc 6,983,710 32,404 1.08%
14 NXSTAGE MED INC COM 5,773,050 82,468 2.75%
15 ALPHATEC HOLDINGS INC 4,982,738 6,876 0.23%
16 VANDA PHARMACEUTICALS INC COM 4,784,157 60,711 2.02%
17 ALIMERA SCIENCES INC 4,420,580 20,379 0.68%
18 UNIVERSAL AMERN CORP NEW 4,409,703 44,626 1.49%
19 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 86,303 2.88%
20 EXELIXIS INC 4,000,000 15,040 0.50% Put
21 Nivalis Therapeutics Inc 3,732,412 56,546 1.88%
22 AXOGEN INC 3,726,439 11,701 0.39%
23 DISCOVERY LABORATORIES INC N 3,659,700 2,489 0.08%
24 EHEALTH INC COM 3,264,588 41,428 1.38%
25 CAS MED SYS INC 3,200,000 4,096 0.14%
26 IMMUNOMEDICS INCORPORATED 2,505,872 10,174 0.34%
27 DYAX CORP COM CVR 2,483,507 65,813 2.19%
28 INFINITY PHARMACEUTICALS INC 2,465,129 26,993 0.90%
29 Hercules Offshore Inc 2,465,042 29,531 0.98%
30 ENDOLOGIX INC 2,449,897 37,581 1.25%
31 RIGEL PHARMACEUTICAL INC 2,397,855 7,697 0.26%
32 AERIE PHARMACEUTICALS INC COM 2,211,644 39,036 1.30%
33 GENESIS HEALTHCARE INC 2,119,616 13,989 0.47%
34 PALATIN TECHNOLOGIES INC COM 2,000,000 1,780 0.06%
35 SYNERON MEDICAL LTD 1,973,945 20,963 0.70%
36 RITE AID CORP 1,890,000 15,782 0.53%
37 STREAMLINE HEALTH SOLUTIONS COM 1,822,759 5,104 0.17%
38 ENDOCHOICE HLDGS INC 1,797,709 29,393 0.98%
39 TRUPANION INC 1,715,211 14,133 0.47%
40 ALLIQUA BIOMEDICAL INC 1,679,111 8,849 0.29%
41 PACIFIC BIOSCIENCES CALIF IN 1,485,861 8,559 0.29%
42 LOXO ONCOLOGY INC COM 1,450,151 26,146 0.87%
43 XENCOR INC COM 1,411,000 31,000 1.03%
44 BOSTON SCIENTIFIC CORP 1,405,348 24,875 0.83%
45 GLAXOSMITHKLINE PLC 1,376,722 57,340 1.91%
46 TONIX PHARMACEUTICALS HOLDING 1,315,551 11,800 0.39%
47 STEADYMED LTD 1,267,577 6,744 0.22%
48 Proteon Therapeutics Inc 1,265,343 22,599 0.75%
49 NANOSTRING TECHNOLOGIES INC 1,232,696 19,008 0.63%
50 GENOMIC HEALTH INC COM 1,183,000 32,876 1.10%
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