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13F-HR filed by EcoR1 Capital, LLC

EcoR1 Capital, LLC filed this 13F-HR for the quarter ended 2019-03-31, filed 2019-05-15, with 41 holding rows worth $1,084,777,000.

Accession
0001567619-19-011227
Filed
2019-05-15
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2019

A holdings report, 41 entries on the cover page, a total value of $1,084,777,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $1,084,777,000 with VALUE read as thousands by filing date, 13F file number 028-16764. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
ARGENX SE SPONSORED ADR04016X101ADR825,087$103,004,000thousands by filing date
KURA ONCOLOGY INC COM50127T109Stock5,276,753$87,541,000thousands by filing date
MIRATI THERAPEUTICS INC60468T105COM1,000,000$73,300,000thousands by filing date
CRISPR THERAPEUTICS AG NAMEN AKTH17182108Stock1,878,277$67,092,000thousands by filing date
XENCOR INC98401F105COMMON STOCK2,059,429$63,966,000thousands by filing date
SPARK THERAPEUTICS INC84652J103COM529,000$60,243,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK4,397,168$59,494,000thousands by filing date
FIBROGEN INC31572Q958PUT1,000,000$54,350,000thousands by filing dateput
DICERNA PHARMACEUTICALS INC253031108COM3,316,407$48,585,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR360,819$42,468,000thousands by filing date
ASCENDIS PHARMA A/S04351P951PUT360,000$42,372,000thousands by filing dateput
ULTRAGENYX PHARMACEUTICAL IN90400D108COM497,899$34,534,000thousands by filing date
MIRATI THERAPEUTICS INC60468T905COM348,900$25,574,000thousands by filing datecall
MYOKARDIA INC62857M105COM478,574$24,881,000thousands by filing date
FIBROGEN INC31572Q908CALL440,800$23,957,000thousands by filing datecall
ASSEMBLY BIOSCIENCES INC045396108COM1,153,599$22,714,000thousands by filing date
EIGER BIOPHARMACEUTICALS INC28249U105COM1,595,643$22,307,000thousands by filing date
DIANTHUS THERAPEUTICS INC COM55910K108Stock1,277,787$21,045,000thousands by filing date
GOSSAMER BIO INC COM38341P102Stock772,096$16,731,000thousands by filing date
CHIASMA INC16706W102COM3,043,827$15,828,000thousands by filing date
KEZAR LIFE SCIENCES INC49372L100COM856,471$15,194,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X908COM CL A1,084,600$14,675,000thousands by filing datecall
HARPOON THERAPEUTICS INC41358P106COM1,336,423$12,656,000thousands by filing date
ARCUS BIOSCIENCES INC03969F109COM990,146$12,367,000thousands by filing date
Mersana Therapeutics Inc59045L106Common Stock2,300,000$12,098,000thousands by filing date
RUBIUS THERAPEUTICS INC78116T103COM646,228$11,697,000thousands by filing date
RHYTHM PHARMACEUTICALS INC76243J105COM400,838$10,987,000thousands by filing date
SURFACE ONCOLOGY INC86877M209COM2,263,488$10,797,000thousands by filing date
FIBROGEN INC31572Q808COM168,382$9,152,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock726,519$8,813,000thousands by filing date
ROCKET PHARMACEUTICALS INC77313F106COM450,000$7,893,000thousands by filing date
Arbutus Biopharma Corp03879J100Common Shares, without par value2,172,883$7,779,000thousands by filing date
CHINOOK THERAPEUTICS INC.00739L101Common Stock1,939,390$7,719,000thousands by filing date
UNITY BIOTECHNOLOGY INC91381U101COM906,614$7,353,000thousands by filing date
SCHOLAR ROCK HLDG CORP80706P103COM338,668$6,364,000thousands by filing date
AQUINOX PHARMACEUTICALS INC03842B101COM2,265,880$6,107,000thousands by filing date
CURIS INC231269200COM2,982,208$5,935,000thousands by filing date
ZAI LAB LTD ADR98887Q104ADR78,519$2,317,000thousands by filing date
VERICEL CORP92346J108COM131,001$2,294,000thousands by filing date
SIENNA BIOPHARMACEUTICALS IN82622H108COM800,000$1,856,000thousands by filing date
ARVINAS INC04335A105COM50,000$738,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001567619-19-011227this filing2019-05-15acceptance time not in the bulk data set