DEERFIELD MANAGEMENT COMPANY, L.P. Quant / Systematic

Location: New York, NY

CIK: 0001009258 · Show all filings

Period: Q1 2015 (← Previous) (Next →)

Filing Date: Aug 14, 2015

Total Value: $3.087B

Holdings (124)

AUSPEX PHARMACEUTICALS INC 14.4%
Value $446M Shares 4,449,103 Est. Cost Unrealized
HORIZON PHARMA PLC 10.8%
Value $332M Shares 12,792,689 Est. Cost Unrealized
ALLSCRIPTS HEALTHCARE SOLUTN 3.2%
Value $98.88M Shares 100,750,000 Est. Cost Unrealized
ABBV ABBVIE INC 2.9%
Value $89.8M Shares 1,534,000 Est. Cost Unrealized
NXSTAGE MEDICAL INC 2.8%
Value $87.76M Shares 5,073,050 Est. Cost Unrealized
ARRAY BIOPHARMA INC 2.8%
Value $87.22M Shares 11,834,595 Est. Cost Unrealized
AVALANCHE BIOTECHNOLOGIES IN 2.8%
Value $85.8M Shares 2,117,473 Est. Cost Unrealized
HORIZON PHARMA INC 2.5%
Value $78.19M Shares 16,014,461 Est. Cost Unrealized
BLUEBIRD BIO INC 2.5%
Value $76.24M Shares 631,309 Est. Cost Unrealized
FLAMEL TECHNOLOGIES SA 2.4%
Value $73.23M Shares 4,072,809 Est. Cost Unrealized
DVA DAVITA HEALTHCARE PARTNERS I 1.9%
Value $59.33M Shares 730,000 Est. Cost Unrealized
ARRAY BIOPHARMA INC 1.8%
Value $56.04M Shares 45,000,000 Est. Cost Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 1.8%
Value $55.48M Shares 3,968,155 Est. Cost Unrealized
UNIVERSAL AMERN CORP NEW 1.8%
Value $55.39M Shares 5,186,148 Est. Cost Unrealized
INTEGRA LIFESCIENCES HLDGS C 1.8%
Value $54.56M Shares 47,428,000 Est. Cost Unrealized
SPARK THERAPEUTICS INC 1.6%
Value $48.92M Shares 631,192 Est. Cost Unrealized
WALGREENS BOOTS ALLIANCE INC 1.4%
Value $43.42M Shares 512,800 Est. Cost Unrealized
ZAFGEN INC 1.3%
Value $41.6M Shares 1,050,178 Est. Cost Unrealized
ARENA PHARMACEUTICALS INC 1.3%
Value $40.33M Shares 9,229,379 Est. Cost Unrealized
GLAXOSMITHKLINE PLC 1.3%
Value $40.3M Shares 873,185 Est. Cost Unrealized
ENDOLOGIX INC 1.3%
Value $40.1M Shares 2,349,351 Est. Cost Unrealized
VNDA VANDA PHARMACEUTICALS INC 1.2%
Value $38.45M Shares 4,134,157 Est. Cost Unrealized
ENDOLOGIX INC 1.1%
Value $35.2M Shares 34,925,000 Est. Cost Unrealized
INSM INSMED INC 1.1%
Value $33.87M Shares 1,628,531 Est. Cost Unrealized
GW PHARMACEUTICALS PLC 1.1%
Value $33.14M Shares 363,700 Est. Cost Unrealized
ANTARES PHARMA INC 1.1%
Value $32.73M Shares 12,078,318 Est. Cost Unrealized
EHTH EHEALTH INC 1.0%
Value $30.62M Shares 3,264,588 Est. Cost Unrealized
AETNA INC NEW 1.0%
Value $30.29M Shares 284,300 Est. Cost Unrealized
SAGE THERAPEUTICS INC 1.0%
Value $29.91M Shares 595,443 Est. Cost Unrealized
XNCR XENCOR INC 0.9%
Value $29.04M Shares 1,895,535 Est. Cost Unrealized
ACHILLION PHARMACEUTICALS IN 0.9%
Value $27.71M Shares 2,810,164 Est. Cost Unrealized
ACCURAY INC 0.9%
Value $26.69M Shares 24,100,000 Est. Cost Unrealized
WEBMD HEALTH CORP 0.8%
Value $24.43M Shares 23,000,000 Est. Cost Unrealized
HEARTWARE INTL INC 0.8%
Value $23.23M Shares 20,464,000 Est. Cost Unrealized
CRL CHARLES RIV LABS INTL INC 0.7%
Value $22.95M Shares 289,450 Est. Cost Unrealized
OM2 ORTHOFIX INTL N V 0.7%
Value $22.62M Shares 630,222 Est. Cost Unrealized
ALIMERA SCIENCES INC 0.7%
Value $22.15M Shares 4,420,580 Est. Cost Unrealized
PORTOLA PHARMACEUTICALS INC 0.7%
Value $21.81M Shares 574,546 Est. Cost Unrealized
MCK MCKESSON CORP 0.7%
Value $20.81M Shares 92,000 Est. Cost Unrealized
LOXO ONCOLOGY INC 0.6%
Value $19.82M Shares 1,591,546 Est. Cost Unrealized
GILD GILEAD SCIENCES INC 0.6%
Value $19.63M Shares 200,000 Est. Cost Unrealized
INGN INOGEN INC 0.6%
Value $19.25M Shares 601,772 Est. Cost Unrealized
AERIE PHARMACEUTICALS INC 0.6%
Value $19M Shares 606,118 Est. Cost Unrealized
DYAX CORP 0.6%
Value $18.96M Shares 1,131,414 Est. Cost Unrealized
HUM HUMANA INC 0.6%
Value $18.92M Shares 106,300 Est. Cost Unrealized
PACB PACIFIC BIOSCIENCES CALIF IN 0.6%
Value $17.8M Shares 3,048,310 Est. Cost Unrealized
TRUP TRUPANION INC 0.5%
Value $16.82M Shares 2,101,848 Est. Cost Unrealized
NUVASIVE INC 0.5%
Value $15.55M Shares 338,194 Est. Cost Unrealized
ELV ANTHEM INC 0.5%
Value $15.4M Shares 99,742 Est. Cost Unrealized
NANOSTRING TECHNOLOGIES INC 0.5%
Value $14.88M Shares 1,460,652 Est. Cost Unrealized
PROTEON THERAPEUTICS INC 0.5%
Value $14.72M Shares 1,265,343 Est. Cost Unrealized
IMPRIVATA INC 0.5%
Value $14.36M Shares 1,025,652 Est. Cost Unrealized
OVASCIENCE INC 0.5%
Value $14.14M Shares 407,108 Est. Cost Unrealized
AAC HLDGS INC 0.4%
Value $13.65M Shares 446,328 Est. Cost Unrealized
AXGN AXOGEN INC 0.4%
Value $13.55M Shares 3,870,824 Est. Cost Unrealized
THERAPEUTICSMD INC 0.4%
Value $13.45M Shares 2,223,310 Est. Cost Unrealized
JUNO THERAPEUTICS INC 0.4%
Value $11.11M Shares 183,149 Est. Cost Unrealized
STEADYMED LTD 0.3%
Value $10.78M Shares 1,267,733 Est. Cost Unrealized
FLUIDIGM CORP DEL 0.3%
Value $10.63M Shares 10,000,000 Est. Cost Unrealized
TRIVASCULAR TECHNOLOGIES INC 0.3%
Value $10.39M Shares 990,202 Est. Cost Unrealized
EXEL EXELIXIS INC 0.3%
Value $10.28M Shares 4,000,000 Est. Cost Unrealized
GENNQ GENESIS HEALTHCARE INC 0.3%
Value $10.2M Shares 1,432,368 Est. Cost Unrealized
GENOCEA BIOSCIENCES INC 0.3%
Value $10.01M Shares 844,257 Est. Cost Unrealized
ADEPTUS HEALTH INC 0.3%
Value $9.974M Shares 198,600 Est. Cost Unrealized
KERYX BIOPHARMACEUTICALS INC 0.3%
Value $9.744M Shares 765,450 Est. Cost Unrealized
IMMUNOMEDICS INC 0.3%
Value $9.598M Shares 2,505,972 Est. Cost Unrealized
TONIX PHARMACEUTICALS HLDG C 0.3%
Value $8.627M Shares 1,365,000 Est. Cost Unrealized
RIGEL PHARMACEUTICALS INC 0.3%
Value $8.56M Shares 2,397,855 Est. Cost Unrealized
DERMA SCIENCES INC 0.3%
Value $8.394M Shares 991,040 Est. Cost Unrealized
ALCOBRA LTD 0.3%
Value $7.956M Shares 1,413,208 Est. Cost Unrealized
HEALTHWAYS INC 0.3%
Value $7.816M Shares 6,700,000 Est. Cost Unrealized
SYNERON MEDICAL LTD 0.3%
Value $7.745M Shares 625,593 Est. Cost Unrealized
OXFORD IMMUNOTEC GLOBAL PLC 0.2%
Value $7.353M Shares 522,250 Est. Cost Unrealized
ALPHATEC HOLDINGS INC 0.2%
Value $7.225M Shares 4,982,738 Est. Cost Unrealized
DBV TECHNOLOGIES S A 0.2%
Value $6.964M Shares 298,121 Est. Cost Unrealized
TRACON PHARMACEUTICALS INC 0.2%
Value $6.809M Shares 485,000 Est. Cost Unrealized
AMPH AMPHASTAR PHARMACEUTICALS IN 0.2%
Value $6.71M Shares 448,532 Est. Cost Unrealized
STREAMLINE HEALTH SOLUTIONS 0.2%
Value $6.471M Shares 1,822,759 Est. Cost Unrealized
FOAMIX PHARMACEUTICALS LTD 0.2%
Value $6.287M Shares 679,627 Est. Cost Unrealized
VERSARTIS INC 0.2%
Value $6.24M Shares 339,703 Est. Cost Unrealized
ZS PHARMA INC 0.2%
Value $6.202M Shares 147,385 Est. Cost Unrealized
BIOTELEMETRY INC 0.2%
Value $5.702M Shares 644,300 Est. Cost Unrealized
CLLS CELLECTIS S A 0.2%
Value $5.204M Shares 150,506 Est. Cost Unrealized
LUMENIS LTD 0.2%
Value $5.202M Shares 434,566 Est. Cost Unrealized
CARA THERAPEUTICS INC 0.2%
Value $4.76M Shares 473,588 Est. Cost Unrealized
PRQR PROQR THRAPEUTICS N V 0.1%
Value $4.582M Shares 209,398 Est. Cost Unrealized
TRILLIUM THERAPEUTICS INC 0.1%
Value $4.573M Shares 226,064 Est. Cost Unrealized
CDNA CAREDX INC 0.1%
Value $4.458M Shares 804,000 Est. Cost Unrealized
DISCOVERY LABORATORIES INC N 0.1%
Value $4.355M Shares 3,659,700 Est. Cost Unrealized
CCRN CROSS CTRY HEALTHCARE INC 0.1%
Value $4.349M Shares 366,724 Est. Cost Unrealized
CAS MED SYS INC 0.1%
Value $4.272M Shares 3,200,000 Est. Cost Unrealized
SCYNEXIS INC 0.1%
Value $4.09M Shares 492,781 Est. Cost Unrealized
RETROPHIN INC 0.1%
Value $3.791M Shares 158,223 Est. Cost Unrealized
EXELIXIS INC 0.1%
Value $3.762M Shares 4,985,000 Est. Cost Unrealized
DERMIRA INC 0.1%
Value $3.553M Shares 231,467 Est. Cost Unrealized
SUCAMPO PHARMACEUTICALS INC 0.1%
Value $3.501M Shares 225,000 Est. Cost Unrealized
ASND ASCENDIS PHARMA A S 0.1%
Value $3.47M Shares 200,000 Est. Cost Unrealized
ST JUDE MED INC 0.1%
Value $3.294M Shares 50,370 Est. Cost Unrealized
INVITAE CORP 0.1%
Value $2.793M Shares 166,666 Est. Cost Unrealized
PALATIN TECHNOLOGIES INC 0.1%
Value $2.04M Shares 2,000,000 Est. Cost Unrealized
KINDRED BIOSCIENCES INC 0.1%
Value $1.994M Shares 279,204 Est. Cost Unrealized
IMMUNOMEDICS INC 0.1%
Value $1.915M Shares 500,000 Est. Cost Unrealized
BOVIE MEDICAL CORP 0.1%
Value $1.673M Shares 700,000 Est. Cost Unrealized
ACAD ACADIA PHARMACEUTICALS INC 0.1%
Value $1.61M Shares 49,400 Est. Cost Unrealized
MEI PHARMA INC 0.0%
Value $1.437M Shares 802,568 Est. Cost Unrealized
PARNEUR PARNELL PHARMACEUT HLDGS LTD 0.0%
Value $1.245M Shares 253,592 Est. Cost Unrealized
ILMN ILLUMINA INC 0.0%
Value $1.188M Shares 6,400 Est. Cost Unrealized
PLASMATECH BIOPHARMACEUTICAL 0.0%
Value $1.099M Shares 349,908 Est. Cost Unrealized
ALKS ALKERMES PLC 0.0%
Value $1.067M Shares 17,500 Est. Cost Unrealized
CORSICANTO LTD 0.0%
Value $1.044M Shares 1,000,000 Est. Cost Unrealized
AGILE THERAPEUTICS INC 0.0%
Value $973K Shares 105,000 Est. Cost Unrealized
MIRATI THERAPEUTICS INC 0.0%
Value $965K Shares 32,912 Est. Cost Unrealized
ABT ABBOTT LABS 0.0%
Value $602K Shares 13,000 Est. Cost Unrealized
MYLAN N V 0.0%
Value $594K Shares 10,000 Est. Cost Unrealized
NEKTAR THERAPEUTICS 0.0%
Value $502K Shares 45,600 Est. Cost Unrealized
AETERNA ZENTARIS INC 0.0%
Value $482K Shares 898,574 Est. Cost Unrealized
MAZOR ROBOTICS LTD 0.0%
Value $470K Shares 41,861 Est. Cost Unrealized
HMS HLDGS CORP 0.0%
Value $462K Shares 29,900 Est. Cost Unrealized
RITE AID CORP 0.0%
Value $459K Shares 52,764 Est. Cost Unrealized
CELGENE CORP 0.0%
Value $403K Shares 3,500 Est. Cost Unrealized
PLASMATECH BIOPHARMACEUTICAL 0.0%
Value $319K Shares 375,000 Est. Cost Unrealized
ONCOTHYREON INC 0.0%
Value $233K Shares 143,200 Est. Cost Unrealized
ESPR ESPERION THERAPEUTICS INC NE 0.0%
Value $232K Shares 2,500 Est. Cost Unrealized
IMRSQ IMRIS INC 0.0%
Value $141K Shares 147,076 Est. Cost Unrealized