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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
101 ENDOLOGIX INC 40,941,000 39,784,000 1.33% PRN
102 EHEALTH INC COM 3,264,588 41,428,000 1.38%
103 CHARLES RIV LABS INTL INC 611,436 43,008,000 1.43%
104 GW PHARMACEUTICALS PLC 361,953 44,462,000 1.48%
105 UNIVERSAL AMERN CORP NEW 4,409,703 44,626,000 1.49%
106 AETNA INC NEW 369,739 47,127,000 1.57%
107 DAVITA INC 636,000 50,543,000 1.68%
108 WALGREENS BOOTS ALLIANCE INC 648,501 54,759,000 1.82%
109 BLUEBIRD BIO INC COM 326,783 55,020,000 1.83%
110 Nivalis Therapeutics Inc 3,732,412 56,546,000 1.88%
111 ARRAY BIOPHARMA INC 3 06/01/2020 45,000,000 56,942,000 1.90% PRN
112 GLAXOSMITHKLINE PLC 1,376,722 57,340,000 1.91%
113 MYLAN N V 871,000 59,106,000 1.97%
114 VANDA PHARMACEUTICALS INC COM 4,784,157 60,711,000 2.02%
115 DYAX CORP COM CVR 2,483,507 65,813,000 2.19%
116 ARRAY BIOPHARMA INC 9,529,361 68,707,000 2.29%
117 NXSTAGE MED INC COM 5,773,050 82,468,000 2.75%
118 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 86,303,000 2.88%
119 ALLSCRIPTS HEALTHCARE SOLUTN 100,750,000 103,524,000 3.45% PRN
120 HORIZON PHARMA PLC 12,259,875 425,908,000 14.19%
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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.