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) 2,357

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 0.04%
Consumer Cyclical
Consumer/Non-Cyclical
Energy
Financial 7.02%
Healthcare 60.65%
Services 3.03%
Technology 0.25%
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 464,503 39,710 9.35 12,792,689
ABBVIE INC COM 107,625 107,625 New 1,534,000
BLUEBIRD BIO INC COM 100,485 -34,957 (25.81) 631,309
FLAMEL TECHNOLOGIES SA SPONSORED ADR 97,259 -28,314 (22.55) 4,072,809
NXSTAGE MEDICAL INC COM 70,972 3,659 5.44 5,073,050
ARRAY BIOPHARMA INC COM 68,049 New 11,834,595
DAVITA HEALTHCARE PARTNERS INC COM 57,400 23,196 67.82 730,000
EHEALTH INC COM 50,601 15,500 44.16 3,264,588
VANDA PHARMACEUTICALS INC COM 49,899 -68 (0.14) 4,134,157
WALGREENS BOOTS ALLIANCE INC COM 49,506 49,506 New 512,800
UNIVERSAL AMERN CORP NEW COM 47,453 -3,922 (7.63) 5,186,148
INSMED INC COM PAR $.01 43,547 -16,394 (27.35) 1,628,531
XENCOR INC COM 42,365 42,365 New 1,895,535
GW PHARMACEUTICALS PLC ADS 41,502 41,502 New 363,700
SAGE THERAPEUTICS INC COM 40,347 22,552 126.73 595,443
SPARK THERAPEUTICS INC COM 39,418 39,418 New 631,192
GLAXOSMITHKLINE PLC SPONSORED ADR 38,062 13,508 55.01 873,185
ZAFGEN INC COM 37,544 37,544 New 1,050,178
ARENA PHARMACEUTICALS INC COM 36,641 9,034 32.73 9,229,379
INFINITY PHARMACEUTICALS INC COM 34,642 963 2.86 3,968,155