DEERFIELD MANAGEMENT CO Information

780 THIRD AVENUE, NEW YORK, New York, 10017, (212) 551-1600

Report Date: 12/31/2014

Position Statistics

Total Positions 127
New Positions 18
Increased Positions 40
Decreased Positions 69
Positions with Activity 109
Sold Out Positions 37
Total Mkt Value (in $ millions) 2,321

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Sector Weighting

Basic Materials
Capital Goods
Conglomerates 0.07%
Consumer Cyclical
Consumer/Non-Cyclical
Energy
Financial 3.08%
Healthcare 65.39%
Services 0%
Technology 0.53%
Transportation
Utilities

127 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
HORIZON PHARMA PLC SHS 247,669 130,798 111.92 11,699,047
AUSPEX PHARMACEUTICALS INC COM 198,858 29,463 17.39 2,949,103
ENDO INTL PLC SHS 184,123 New 2,149,712
ALLERGAN INC COM 142,964 27,151 23.44 606,601
ARRAY BIOPHARMA INC COM 98,227 -3,080 (3.04) 11,834,595
BLUEBIRD BIO INC COM 85,136 -40,796 (32.4) 850,932
FLAMEL TECHNOLOGIES SA SPONSORED ADR 83,294 New 5,258,475
NXSTAGE MEDICAL INC COM 81,555 -22,537 (21.65) 4,811,494
INFINITY PHARMACEUTICALS INC COM 62,381 -404 (0.64) 3,857,805
AVALANCHE BIOTECHNOLOGIES INC COM 59,113 -15,852 (21.15) 1,614,669
ENDOLOGIX INC COM 54,196 14,071 35.07 3,378,787
AERIE PHARMACEUTICALS INC COM 53,537 -13,421 (20.04) 1,858,917
UNIVERSAL AMERN CORP NEW COM 50,645 -3,425 (6.33) 5,614,798
NEVRO CORP COM 45,831 45,831 New 1,047,093
VANDA PHARMACEUTICALS INC COM 45,786 21,800 90.89 4,139,787
INSMED INC COM PAR $.01 42,591 3,068 7.76 2,241,631
ACHILLION PHARMACEUTICALS INC COM 33,963 33,963 New 2,920,300
DAVITA HEALTHCARE PARTNERS INC COM 33,386 -15,920 (32.29) 435,000
PACIFIC BIOSCIENCES CALIF INC COM 32,568 4,588 16.40 5,120,771
ARENA PHARMACEUTICALS INC COM 30,040 4,777 18.91 6,953,737