EcoR1 Capital, LLC Q1 2016 Filing
Filed May 16, 2016
Portfolio Value
$286.2B
Holdings
37
Report Date
Q1 2016
Filing Type
13F-HR
All Holdings (37 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | IRWDIRONWOOD PHARMACEUTICALS INC | 2,061,417 | $22.6B | 7.88% | |
| 2 | —FIVE PRIME THERAPEUTICS INC | 500,757 | $20.3B | 7.11% | |
| 3 | —EPIZYME INC | 1,598,900 | $19.4B | 6.77% | |
| 4 | FGENEURFIBROGEN INC | 863,745 | $18.4B | 6.43% | |
| 5 | —ARRAY BIOPHARMA INC | 22,534,000 | $18.1B | 6.34% | |
| 6 | —RETROPHIN INC | 1,225,084 | $16.7B | 5.85% | |
| 7 | LVLNSPDR SERIES TRUST S&P BIOTECH | 297,200 | $15.4B | 5.36% | Call |
| 8 | CYTKCYTOKINETICS INC | 2,052,800 | $14.5B | 5.06% | |
| 9 | GILDGILEAD SCIENCES INC | 150,000 | $13.8B | 4.81% | Call |
| 10 | ASMBASSEMBLY BIOSCIENCES INC | 2,098,302 | $10.5B | 3.68% | |
| 11 | —CELATOR PHARMACEUTICALS INC | 950,000 | $10.5B | 3.66% | |
| 12 | GLPGGALAPAGOS NV | 246,691 | $10.3B | 3.60% | |
| 13 | KURAKURA ONCOLOGY INC | 2,465,286 | $10.0B | 3.49% | |
| 14 | COLLCOLLEGIUM PHARMACEUTICAL INC | 473,123 | $8.6B | 3.00% | |
| 15 | XLRNACCELERON PHARMA INC | 270,289 | $7.1B | 2.49% | |
| 16 | —AIMMUNE THERAPEUTICS INC | 521,366 | $7.1B | 2.47% | |
| 17 | ENTAENANTA PHARMACEUTICALS INC | 240,383 | $7.1B | 2.47% | |
| 18 | —KITE PHARMA INC | 150,000 | $6.9B | 2.41% | |
| 19 | SNDXSYNDAX PHARMACEUTICALS INC | 510,829 | $6.8B | 2.38% | |
| 20 | —NABRIVA THERAPTCS AG | 707,817 | $6.3B | 2.22% | |
| 21 | —FLEX PHARMA INC | 575,925 | $6.3B | 2.21% | |
| 22 | —KINDRED BIOSCIENCES INC | 1,432,765 | $4.9B | 1.73% | |
| 23 | —LOXO ONCOLOGY INC | 150,308 | $4.1B | 1.44% | |
| 24 | IRWDIRONWOOD PHARMACEUTICALS INC | 300,000 | $3.3B | 1.15% | Call |
| 25 | CLDNEUREIGER BIOPHARMACEUTICALS INC | 189,545 | $3.2B | 1.11% | |
| 26 | EDITEDITAS MEDICINE INC | 87,921 | $3.0B | 1.06% | |
| 27 | —IMMUNOGEN INC | 299,500 | $2.6B | 0.89% | Call |
| 28 | CYTKCYTOKINETICS INC | 250,000 | $1.8B | 0.62% | Call |
| 29 | —FORWARD PHARMA A/S | 97,024 | $1.6B | 0.58% | |
| 30 | —ARRAY BIOPHARMA INC | 520,000 | $1.5B | 0.54% | Call |
| 31 | —AKARI THERAPEUTICS PLC | 92,303 | $1.3B | 0.45% | |
| 32 | —TARGACEPT INC | 669,166 | $669.0M | 0.23% | |
| 33 | ONCBEIGENE LTD | 15,766 | $462.0M | 0.16% | |
| 34 | GBTUSDGLOBAL BLOOD THERAPEUTICS INC | 28,032 | $445.0M | 0.16% | |
| 35 | —ATYR PHARMA INC | 74,959 | $295.0M | 0.10% | |
| 36 | —SPARK THERAPEUTICS INC | 8,700 | $257.0M | 0.09% | |
| 37 | —ZAFGEN INC | 10,000 | $67.0M | 0.02% | Call |