EcoR1 Capital

EcoR1 Capital as of March 31, 2015

Portfolio Holdings for EcoR1 Capital

EcoR1 Capital holds 22 positions in its portfolio as reported in the March 2015 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Atara Biotherapeutics 15.1 $44M 1.1M 41.57
Epizyme 10.2 $30M 1.6M 18.78
Receptos 8.5 $25M 151k 164.89
Array Biopharma Inc note 3.000% 6/0 7.5 $22M 18M 1.26
Assembly Biosciences 7.1 $21M 1.6M 13.24
Clovis Oncology 6.3 $19M 2.5k 7423.20
Clovis Oncology 6.2 $18M 243k 74.23
Kite Pharma 5.5 $16M 281k 57.68
Flex Pharma 5.4 $16M 806k 19.60
Ironwood Pharmaceuticals (IRWD) 5.0 $15M 905k 16.00
Fibrogen (FGEN) 4.3 $13M 400k 31.38
Retrophin 3.4 $9.8M 410k 23.96
Kindred Biosciences 3.2 $9.2M 1.3M 7.14
Genvec 2.0 $5.9M 2.0M 2.95
Sage Therapeutics (SAGE) 1.9 $5.6M 113k 50.23
Array BioPharma 1.9 $5.4M 7.4k 737.14
Calithera Biosciences 1.7 $4.9M 296k 16.42
Forward Pharma A/s 1.5 $4.5M 159k 28.32
Xenon Pharmaceuticals (XENE) 1.3 $3.7M 221k 16.87
Flexion Therapeutics 1.3 $3.7M 163k 22.52
Targacept 0.6 $1.8M 620k 2.97
Epizyme Inc call 0.1 $282k 150.00 1880.00