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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 DYAX CORP COM CVR 2,483,507 65,813 2.19%
2 AAC HLDGS INC 303,027 13,200 0.44%
3 ACCURAY INC 24,100,000 24,565 0.82% PRN
4 ADEPTUS HEALTH INC 364,000 34,576 1.15%
5 AERIE PHARMACEUTICALS INC COM 2,211,644 39,036 1.30%
6 AETNA INC NEW 369,739 47,127 1.57%
7 AKORN INCORPORATED 344,667 15,048 0.50%
8 ALCOBRA LTD 1,088,449 7,118 0.24%
9 ALIMERA SCIENCES INC 4,420,580 20,379 0.68%
10 ALLIQUA BIOMEDICAL INC 1,679,111 8,849 0.29%
11 ALLSCRIPTS HEALTHCARE SOLUTN 100,750,000 103,524 3.45% PRN
12 ALPHATEC HOLDINGS INC 4,982,738 6,876 0.23%
13 AMPHASTAR PHARMACEUTICALS IN COM 448,532 7,885 0.26%
14 ANTARES PHARMA INC 18,389,789 38,251 1.27%
15 ANTHEM INC 140,806 23,112 0.77%
16 ARRAY BIOPHARMA INC 9,529,361 68,707 2.29%
17 ARRAY BIOPHARMA INC 3 06/01/2020 45,000,000 56,942 1.90% PRN
18 AXOGEN INC 3,726,439 11,701 0.39%
19 Aldeyra Therapeutics Inc 690,538 5,359 0.18%
20 Arena Pharmaceuticals, Inc 6,983,710 32,404 1.08%
21 Ascendis Pharma 20,859 369 0.01%
22 BLUEBIRD BIO INC COM 326,783 55,020 1.83%
23 BOSTON SCIENTIFIC CORP 1,405,348 24,875 0.83%
24 BOVIE MEDICAL CORP COM 688,229 1,920 0.06%
25 BioTelemetry Inc 644,300 6,076 0.20%
26 Biotie Therapies Corp. 219,558 4,385 0.15%
27 CAREDX INC 229,000 1,489 0.05%
28 CAS MED SYS INC 3,200,000 4,096 0.14%
29 CHARLES RIV LABS INTL INC 611,436 43,008 1.43%
30 CIDARA THERAPEUTICS INC 237,583 3,331 0.11%
31 CORSICANTO LTD 1,000,000 1,084 0.04% PRN
32 Catabasis Pharmaceuticals Inc 738,055 9,012 0.30%
33 DAVITA INC 636,000 50,543 1.68%
34 DBV TECHNOLOGIES S A 160,259 4,773 0.16%
35 DERMA SCIENCES ORD 968,881 6,937 0.23%
36 DERMIRA INC COM 496,387 8,712 0.29%
37 DISCOVERY LABORATORIES INC N 3,659,700 2,489 0.08%
38 EDWARDS LIFESCIENCES CORP 211,850 30,174 1.01%
39 EHEALTH INC COM 3,264,588 41,428 1.38%
40 ENDOCHOICE HLDGS INC 1,797,709 29,393 0.98%
41 ENDOLOGIX INC 2,449,897 37,581 1.25%
42 ENDOLOGIX INC 40,941,000 39,784 1.33% PRN
43 EXELIXIS INC 4,000,000 15,040 0.50% Put
44 Esperion Therapeutics Inc 20,900 1,709 0.06%
45 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 86,303 2.88%
46 FLUIDIGM CORP DEL 35,000,000 30,952 1.03% PRN
47 FOAMIX PHARMACEUTICALS LTD 948,934 9,727 0.32%
48 GALAPAGOS NV 642,608 33,094 1.10%
49 GENESIS HEALTHCARE INC 2,119,616 13,989 0.47%
50 GENOCEA BIOSCIENCES INC 564,257 7,747 0.26%
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