DEERFIELD MANAGEMENT CO Information

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

Report Date: 03/31/2015

Position Statistics

Total Positions 131
New Positions 43
Increased Positions 67
Decreased Positions 50
Positions with Activity 117
Sold Out Positions 23
Total Mkt Value (in $ millions) 2,364

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 0.05%
Consumer Cyclical
Consumer/Non-Cyclical
Energy
Financial 7.14%
Healthcare 59.68%
Services 2.71%
Technology 0.23%
Transportation
Utilities

131 Positions as of 03/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
HORIZON PHARMA PLC SHS 414,867 35,467 9.35 12,792,689
BLUEBIRD BIO INC COM 122,632 -42,662 (25.81) 631,309
ABBVIE INC COM 102,149 102,149 New 1,534,000
ARRAY BIOPHARMA INC COM 90,535 New 11,834,595
NXSTAGE MEDICAL INC COM 82,234 4,240 5.44 5,073,050
AVALANCHE BIOTECHNOLOGIES INC COM 78,939 18,745 31.14 2,117,473
FLAMEL TECHNOLOGIES SA SPONSORED ADR 74,736 -21,757 (22.55) 4,072,809
DAVITA HEALTHCARE PARTNERS INC COM 61,159 24,715 67.82 730,000
UNIVERSAL AMERN CORP NEW COM 53,210 -4,398 (7.63) 5,186,148
INFINITY PHARMACEUTICALS INC COM 51,427 1,430 2.86 3,968,155
SPARK THERAPEUTICS INC COM 46,481 46,481 New 631,192
SAGE THERAPEUTICS INC COM 44,581 24,918 126.73 595,443
WALGREENS BOOTS ALLIANCE INC COM 44,019 44,019 New 512,800
EHEALTH INC COM 42,570 13,040 44.16 3,264,588
VANDA PHARMACEUTICALS INC COM 41,714 -57 (0.14) 4,134,157
GW PHARMACEUTICALS PLC ADS 41,502 41,502 New 363,700
ENDOLOGIX INC COM 39,211 -17,181 (30.47) 2,349,351
GLAXOSMITHKLINE PLC SPONSORED ADR 38,743 13,750 55.01 873,185
ARENA PHARMACEUTICALS INC COM 36,225 8,932 32.73 9,229,379
INSMED INC COM PAR $.01 35,730 -13,451 (27.35) 1,628,531