EcoR1 Capital, LLC Q4 2018 Filing
Filed February 14, 2019
Portfolio Value
$999.4B
Holdings
53
Report Date
Q4 2018
Filing Type
13F-HR
All Holdings (53 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | ARGXARGENX SE | 825,087 | $79.3B | 7.93% | |
| 2 | KURAKURA ONCOLOGY INC | 5,276,753 | $74.1B | 7.41% | |
| 3 | FGENEURFIBROGEN INC | 1,524,557 | $70.6B | 7.06% | |
| 4 | IRWDIRONWOOD PHARMACEUTICALS INC | 5,381,282 | $55.8B | 5.58% | |
| 5 | ASMBASSEMBLY BIOSCIENCES INC | 2,404,853 | $54.4B | 5.44% | |
| 6 | —SPARK THERAPEUTICS INC | 1,136,851 | $44.5B | 4.45% | |
| 7 | ASNDASCENDIS PHARMA A S | 679,746 | $42.6B | 4.26% | |
| 8 | ISIIONIS PHARMACEUTICALS INC | 725,326 | $39.2B | 3.92% | |
| 9 | —FIBROGEN INC | 840,800 | $38.9B | 3.89% | Call |
| 10 | XNCRXENCOR INC | 989,018 | $35.8B | 3.58% | |
| 11 | —DICERNA PHARMACEUTICALS INC | 3,316,407 | $35.5B | 3.55% | |
| 12 | SRRKSCHOLAR ROCK HOLDING CORP | 1,474,228 | $33.9B | 3.39% | |
| 13 | MRTXEURMIRATI THERAPEUTICS INC | 647,169 | $27.5B | 2.75% | |
| 14 | KZRKEZAR LIFE SCIENCES INC | 1,060,018 | $25.0B | 2.50% | |
| 15 | SLDBSOLID BIOSCIENCES INC | 867,246 | $23.2B | 2.33% | |
| 16 | ASNDASCENDIS PHARMA A S | 360,000 | $22.6B | 2.26% | Put |
| 17 | —AKCEA THERAPEUTICS INC | 639,743 | $19.3B | 1.93% | |
| 18 | GILDGILEAD SCIENCES INC | 285,100 | $17.8B | 1.78% | Call |
| 19 | CLDNEUREIGER BIOPHARMACEUTICALS INC | 1,595,643 | $16.2B | 1.62% | |
| 20 | —UNITY BIOTECHNOLOGY INC | 967,114 | $15.7B | 1.57% | |
| 21 | ASNDASCENDIS PHARMA A S | 250,400 | $15.7B | 1.57% | Call |
| 22 | GBYSANGAMO THERAPEUTICS INC | 1,185,831 | $13.6B | 1.36% | |
| 23 | ZLABZAI LAB LTD | 569,377 | $13.2B | 1.32% | |
| 24 | RCUSARCUS BIOSCIENCES INC | 1,223,495 | $13.2B | 1.32% | |
| 25 | I9DNARBUTUS BIOPHARMA CORP | 3,281,502 | $12.6B | 1.26% | |
| 26 | —CELGENE CORP | 195,000 | $12.5B | 1.25% | Call |
| 27 | IRWDIRONWOOD PHARMACEUTICALS INC | 1,172,300 | $12.1B | 1.22% | Call |
| 28 | —MYOKARDIA INC | 234,381 | $11.5B | 1.15% | |
| 29 | RYTMRHYTHM PHARMACEUTICALS INC | 400,838 | $10.8B | 1.08% | |
| 30 | NKTRNEKTAR THERAPEUTICS | 316,700 | $10.4B | 1.04% | Call |
| 31 | WVEWAVE LIFE SCIENCES LTD | 233,933 | $9.8B | 0.98% | |
| 32 | SURFUSDSURFACE ONCOLOGY INC | 2,261,328 | $9.6B | 0.96% | |
| 33 | RUBYUSDRUBIUS THERAPEUTICS INC | 592,128 | $9.5B | 0.95% | |
| 34 | ARRYEURARRAY BIOPHARMA INC | 644,002 | $9.2B | 0.92% | |
| 35 | PRTAPROTHENA CORP PLC | 838,219 | $8.6B | 0.86% | |
| 36 | —MAGENTA THERAPEUTICS INC | 1,379,487 | $7.9B | 0.79% | |
| 37 | —IMMUNE DESIGN CORP | 5,603,191 | $7.3B | 0.73% | |
| 38 | RCKTROCKET PHARMACEUTICALS INC | 450,000 | $6.7B | 0.67% | |
| 39 | CRSPCRISPR THERAPEUTICS AG | 208,850 | $6.0B | 0.60% | |
| 40 | —AQUINOX PHARMACEUTICALS INC | 2,265,880 | $4.9B | 0.49% | |
| 41 | —PORTOLA PHARMACEUTICALS INC | 247,858 | $4.8B | 0.48% | |
| 42 | ACRSACLARIS THERAPEUTICS INC | 613,728 | $4.5B | 0.45% | |
| 43 | —FIVE PRIME THERAPEUTICS INC | 326,775 | $3.0B | 0.30% | |
| 44 | HTDCORCEPT THERAPEUTICS INC | 166,005 | $2.2B | 0.22% | |
| 45 | —CURIS INC | 2,982,208 | $2.1B | 0.21% | |
| 46 | DVAXDYNAVAX TECHNOLOGIES CORP | 140,118 | $1.3B | 0.13% | |
| 47 | —CHIASMA INC | 379,753 | $1.2B | 0.12% | |
| 48 | CRVSCORVUS PHARMACEUTICALS INC | 295,420 | $1.1B | 0.11% | |
| 49 | —ONCONOVA THERAPEUTICS INC | 423,441 | $893.0M | 0.09% | |
| 50 | ARVNARVINAS INC | 50,000 | $643.0M | 0.06% | |
| 51 | —AFFIMED N V | 158,221 | $492.0M | 0.05% | |
| 52 | —CONSTELLATION PHARMACEUTICALS INC | 79,194 | $318.0M | 0.03% | |
| 53 | PRQRPROQR THERAPEUTICS N V | 11,022 | $174.0M | 0.02% |