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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 (2014Q2)
Portfolio Summary: 127 holdings with a total value of $2,486,776,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 DENDREON CORP 222,732,000 156,485,000 6.29% PRN
2 AUXILIUM PHARMACEUTICALS INC 6,267,382 125,724,000 5.06%
3 INTERMUNE INC 2,315,521 102,230,000 4.11%
4 FLAMEL TECHNOLOGIES SA SPONSORED ADR 5,258,475 78,877,000 3.17%
5 Allergan plc 434,199 73,475,000 2.95%
6 VOLCANO CORPORATION 75,500,000 72,627,000 2.92% PRN
7 NXSTAGE MED INC COM 4,899,721 70,409,000 2.83%
8 KERYX BIOPHARMACEUTICALS INCORPORATED 3,884,409 59,742,000 2.40%
9 ARRAY BIOPHARMA INC COM 12,205,673 55,658,000 2.24%
10 Dicerna Pharmaceuticals 2,428,569 54,813,000 2.20%
11 INTEGRA LIFESCIENCES HLDGS C 47,428,000 50,661,000 2.04% PRN
12 EHEALTH INC COM 1,323,391 50,249,000 2.02%
13 UNIVERSAL AMERN CORP NEW 5,771,737 48,079,000 1.93%
14 AMAG PHARMACEUTICALS INC 45,020,000 47,695,000 1.92% PRN
15 INFINITY PHARMACEUTICALS INC COM 3,674,838 46,817,000 1.88%
16 AUSPEX PHARMACEUTICALS INC 1,984,038 44,185,000 1.78%
17 HCA HOLDINGS INC 750,000 42,285,000 1.70% Put
18 BLUEBIRD BIO INCORPORATED 1,075,268 41,473,000 1.67%
19 DAVITA INC 566,588 40,976,000 1.65%
20 HUMANA 280,000 35,762,000 1.44% Call
21 DYAX CORP COM CVR 3,717,013 35,683,000 1.43%
22 TENET HEALTHCARE CORP 750,000 35,205,000 1.42% Put
23 CIGNA CORPORATION 375,000 34,489,000 1.39% Put
24 AERIE PHARMACEUTICALS INC 1,350,850 33,461,000 1.35%
25 ABBVIE INC 541,400 30,557,000 1.23%
26 AETNA INC NEW 375,000 30,405,000 1.22% Put
27 ARRAY BIOPHARMA INC 3 06/01/2020 29,500,000 29,666,000 1.19% PRN
28 PACIFIC BIOSCIENCES CALIF IN 4,695,203 29,016,000 1.17%
29 MCKESSON CORP 150,000 27,932,000 1.12%
30 PROSENSA HLDG N V SHS USD 2,206,119 27,846,000 1.12%
31 Auxilium Pharmaceuticals Inc 25,003,000 26,508,000 1.07% PRN
32 ANTARES PHARMA INC 9,603,703 25,642,000 1.03%
33 ARENA PHARMACEUTICALS INC 4,369,066 25,603,000 1.03%
34 ACCURAY INC 21,600,000 24,819,000 1.00% PRN
35 INSMED INC COM PAR .01 1,205,234 24,081,000 0.97%
36 ZELTIQ AESTHETICS INCORPORATED 1,566,155 23,790,000 0.96%
37 Questcor 250,000 23,123,000 0.93% Call
38 TRIVASCULAR TECHNOLOGIES INC 1,482,666 23,085,000 0.93%
39 ENDOLOGIX INC 1,481,928 22,540,000 0.91%
40 HCA HOLDINGS INC 380,189 21,435,000 0.86%
41 XENOPORT INC 4,427,642 21,386,000 0.86%
42 ANI PHARMACEUTICALS INC COM 607,355 20,917,000 0.84%
43 AMAG PHARMACEUTICALS INC COM 999,339 20,706,000 0.83%
44 ORTHOFIX INTERNATIONAL NV 533,812 19,351,000 0.78%
45 SPECTRANETICS CORP 17,000,000 17,758,000 0.71% PRN
46 VANDA PHARMACEUTICALS INC COM 1,085,301 17,560,000 0.71%
47 INTEGRA LIFESCIENCES HLDGS CP COM NEW 369,464 17,387,000 0.70%
48 WRIGHT MEDICAL GROUP N.V. 739,007 17,278,000 0.69%
49 TENET HEALTHCARE CORP 366,956 17,225,000 0.69%
50 PORTOLA PHARMACEUTICALS INC 584,848 17,066,000 0.69%
Page 1 of 3

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001140361-14-032861, filed 2014.08.14).

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.