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) 2,391

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 7.03%
Healthcare 60.57%
Services 3%
Technology 0.26%
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 471,411 40,301 9.35 12,792,689
ABBVIE INC COM 107,395 107,395 New 1,534,000
BLUEBIRD BIO INC COM 104,690 -36,420 (25.81) 631,309
FLAMEL TECHNOLOGIES SA SPONSORED ADR 97,422 -28,361 (22.55) 4,072,809
NXSTAGE MEDICAL INC COM 72,443 3,735 5.44 5,073,050
ARRAY BIOPHARMA INC COM 68,759 New 11,834,595
DAVITA HEALTHCARE PARTNERS INC COM 57,692 23,314 67.82 730,000
EHEALTH INC COM 53,115 16,270 44.16 3,264,588
VANDA PHARMACEUTICALS INC COM 50,602 -69 (0.14) 4,134,157
WALGREENS BOOTS ALLIANCE INC COM 49,552 49,552 New 512,800
UNIVERSAL AMERN CORP NEW COM 48,076 -3,974 (7.63) 5,186,148
INSMED INC COM PAR $.01 44,133 -16,615 (27.35) 1,628,531
XENCOR INC COM 42,441 42,441 New 1,895,535
GW PHARMACEUTICALS PLC ADS 41,647 41,647 New 363,700
SAGE THERAPEUTICS INC COM 40,704 22,751 126.73 595,443
ZAFGEN INC COM 39,875 39,875 New 1,050,178
SPARK THERAPEUTICS INC COM 38,780 38,780 New 631,192
GLAXOSMITHKLINE PLC SPONSORED ADR 37,931 13,461 55.01 873,185
ARENA PHARMACEUTICALS INC COM 37,287 9,194 32.73 9,229,379
INFINITY PHARMACEUTICALS INC COM 34,682 964 2.86 3,968,155