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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 HEARTWARE INTL INC 31,264,000 33,215 1.11% PRN
6 FLUIDIGM CORP DEL 35,000,000 30,952 1.03% PRN
7 HEALTHWAYS INC 27,915,000 25,929 0.86% PRN
8 WEBMD HEALTH CORP NOTE 1.50012/0 23,000,000 24,636 0.82% PRN
9 ACCURAY INC 24,100,000 24,565 0.82% PRN
10 CORSICANTO LTD 1,000,000 1,084 0.04% PRN
11 HORIZON PHARMA PLC 12,259,875 425,908 14.19%
12 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 86,303 2.88%
13 NXSTAGE MED INC COM 5,773,050 82,468 2.75%
14 ARRAY BIOPHARMA INC 9,529,361 68,707 2.29%
15 DYAX CORP COM CVR 2,483,507 65,813 2.19%
16 VANDA PHARMACEUTICALS INC COM 4,784,157 60,711 2.02%
17 MYLAN N V 871,000 59,106 1.97%
18 GLAXOSMITHKLINE PLC 1,376,722 57,340 1.91%
19 Nivalis Therapeutics Inc 3,732,412 56,546 1.88%
20 BLUEBIRD BIO INC COM 326,783 55,020 1.83%
21 WALGREENS BOOTS ALLIANCE INC 648,501 54,759 1.82%
22 DAVITA INC 636,000 50,543 1.68%
23 AETNA INC NEW 369,739 47,127 1.57%
24 UNIVERSAL AMERN CORP NEW 4,409,703 44,626 1.49%
25 GW PHARMACEUTICALS PLC 361,953 44,462 1.48%
26 CHARLES RIV LABS INTL INC 611,436 43,008 1.43%
27 EHEALTH INC COM 3,264,588 41,428 1.38%
28 AERIE PHARMACEUTICALS INC COM 2,211,644 39,036 1.30%
29 ANTARES PHARMA INC 18,389,789 38,251 1.27%
30 TEVA PHARMACEUTICAL INDS LTD 646,000 38,179 1.27%
31 SPARK THERAPEUTICS INCORPORATED 631,192 38,042 1.27%
32 ENDOLOGIX INC 2,449,897 37,581 1.25%
33 ZAFGEN INC COM 1,007,614 34,894 1.16%
34 ADEPTUS HEALTH INC 364,000 34,576 1.15%
35 GALAPAGOS NV 642,608 33,094 1.10%
36 GENOMIC HEALTH INC COM 1,183,000 32,876 1.10%
37 Arena Pharmaceuticals, Inc 6,983,710 32,404 1.08%
38 XENCOR INC COM 1,411,000 31,000 1.03%
39 MCKESSON CORP 136,000 30,574 1.02%
40 EDWARDS LIFESCIENCES CORP 211,850 30,174 1.01%
41 ZELTIQ AESTHETICS INC 1,016,453 29,955 1.00%
42 Hercules Offshore Inc 2,465,042 29,531 0.98%
43 ENDOCHOICE HLDGS INC 1,797,709 29,393 0.98%
44 INFINITY PHARMACEUTICALS INC 2,465,129 26,993 0.90%
45 INOGEN INC COM 601,772 26,839 0.89%
46 LOXO ONCOLOGY INC COM 1,450,151 26,146 0.87%
47 BOSTON SCIENTIFIC CORP 1,405,348 24,875 0.83%
48 ANTHEM INC 140,806 23,112 0.77%
49 Proteon Therapeutics Inc 1,265,343 22,599 0.75%
50 SAGE THERAPEUTICS INC 305,000 22,265 0.74%
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