EcoR1 Capital

EcoR1 Capital as of March 31, 2016

Portfolio Holdings for EcoR1 Capital

EcoR1 Capital holds 37 positions in its portfolio as reported in the March 2016 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Ironwood Pharmaceuticals (IRWD) 7.9 $23M 2.1M 10.94
Five Prime Therapeutics 7.1 $20M 501k 40.63
Epizyme 6.8 $19M 1.6M 12.12
Fibrogen (FGEN) 6.4 $18M 864k 21.29
Array Biopharma Inc note 3.000% 6/0 6.4 $18M 23M 0.81
Retrophin 5.8 $17M 1.2M 13.66
Spdr S&p Oil & Gas Exp & Pr call 5.4 $15M 297k 51.66
Cytokinetics (CYTK) 5.0 $15M 2.1M 7.05
Gilead Sciences Inc option 4.8 $14M 150k 91.86
Assembly Biosciences (ASMB) 3.7 $11M 2.1M 5.02
Celator Pharmaceuticals 3.7 $11M 950k 11.03
Galapagos Nv- (GLPG) 3.6 $10M 247k 41.82
Kura Oncology (KURA) 3.5 $10M 2.5M 4.05
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 3.0 $8.6M 473k 18.15
Acceleron Pharma 2.5 $7.1M 270k 26.39
Enanta Pharmaceuticals (ENTA) 2.5 $7.1M 240k 29.37
Aimmune Therapeutics 2.5 $7.1M 521k 13.56
Kite Pharma 2.4 $6.9M 150k 45.91
Syndax Pharmaceuticals (SNDX) 2.4 $6.8M 511k 13.32
Nabriva Therapeutics 2.2 $6.3M 708k 8.96
Flex Pharma 2.2 $6.3M 576k 10.97
Kindred Biosciences 1.7 $4.9M 1.4M 3.45
Loxo Oncology 1.4 $4.1M 150k 27.34
Ironwood Pharmaceuticals Inc cl a 1.1 $3.3M 300k 10.94
Eiger Biopharmaceuticals (EIGR) 1.1 $3.2M 190k 16.77
Editas Medicine (EDIT) 1.1 $3.0M 88k 34.54
Immunogen Inc Cmn Stk cmn 0.9 $2.6M 300k 8.52
Cytokinetics 0.6 $1.8M 250k 7.05
Forward Pharma A/s 0.6 $1.6M 97k 17.00
Array Biopharma 0.5 $1.5M 520k 2.95
Akari Therapeutics 0.5 $1.3M 92k 14.00
Targacept Inc Conv Dtd convertible 0.2 $669k 669k 1.00
Global Blood Therapeutics In 0.2 $445k 28k 15.87
Beigene (BGNE) 0.2 $462k 16k 29.30
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $295k 75k 3.94
Spark Therapeutics 0.1 $257k 8.7k 29.54
Zafgen 0.0 $67k 10k 6.70