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13F-HR filed by EcoR1 Capital, LLC

EcoR1 Capital, LLC filed this 13F-HR for the quarter ended 2018-09-30, filed 2018-11-14, with 50 holding rows worth $1,110,045,000.

Accession
0001567619-18-006356
Filed
2018-11-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2018

A holdings report, 51 entries on the cover page, a total value of $1,110,045,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $1,110,045,000 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
FIBROGEN INC31572Q808COM2,017,250$122,548,000thousands by filing date
ASSEMBLY BIOSCIENCES INC045396108COM2,943,164$109,309,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK5,141,624$94,914,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR1,087,257$77,043,000thousands by filing date
KURA ONCOLOGY INC COM50127T109Stock3,902,975$68,302,000thousands by filing date
SCHOLAR ROCK HLDG CORP80706P103COM2,367,378$60,960,000thousands by filing date
DICERNA PHARMACEUTICALS INC253031108COM3,802,327$58,024,000thousands by filing date
SPARK THERAPEUTICS INC84652J103COM837,048$45,661,000thousands by filing date
MACROGENICS INC556099109COM1,481,086$31,754,000thousands by filing date
ARCUS BIOSCIENCES INC03969F109COM2,236,387$31,175,000thousands by filing date
KEZAR LIFE SCIENCES INC49372L100COM1,288,198$27,580,000thousands by filing date
AKCEA THERAPEUTICS INC00972L107COM755,120$26,444,000thousands by filing date
ULTRAGENYX PHARMACEUTICAL IN90400D908CALL325,000$24,811,000thousands by filing datecall
GILEAD SCIENCES INC375558903COM292,600$22,592,000thousands by filing datecall
CRISPR THERAPEUTICS AG NAMEN AKTH17182108Stock500,000$22,175,000thousands by filing date
FIBROGEN INC31572Q908CALL350,000$21,263,000thousands by filing datecall
NEKTAR THERAPEUTICS CMN STK640268908Cmn325,000$19,812,000thousands by filing datecall
ULTRAGENYX PHARMACEUTICAL IN90400D108COM254,000$19,390,000thousands by filing date
DIANTHUS THERAPEUTICS INC COM55910K108Stock1,538,088$18,472,000thousands by filing date
ASCENDIS PHARMA A/S04351P901CALL257,000$18,211,000thousands by filing datecall
CELGENE CORP151020904COM200,000$17,898,000thousands by filing datecall
UNITY BIOTECHNOLOGY INC91381U101COM967,114$15,754,000thousands by filing date
SURFACE ONCOLOGY INC86877M209COM1,363,479$14,916,000thousands by filing date
RUBIUS THERAPEUTICS INC78116T103COM592,128$14,211,000thousands by filing date
EIGER BIOPHARMACEUTICALS INC28249U105COM1,039,500$12,474,000thousands by filing date
Arbutus Biopharma Corp03879J100Common Shares, without par value1,231,800$11,641,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X908COM CL A567,600$10,477,000thousands by filing datecall
SPERO THERAPEUTICS INC84833T103COM892,741$9,383,000thousands by filing date
IMMUNE DESIGN CORP.45252L103Common Stock2,241,900$7,735,000thousands by filing date
ZAI LAB LTD ADR98887Q104ADR350,000$6,818,000thousands by filing date
AQUINOX PHARMACEUTICALS INC03842B101COM2,265,880$6,639,000thousands by filing date
ELANCO ANIMAL HEALTH INC COM28414H103Stock190,000$6,629,000thousands by filing date
SANGAMO THERAPEUTICS INC800677106COM343,231$5,818,000thousands by filing date
ACHILLION PHARMACEUTICALS IN00448Q201COM1,564,080$5,756,000thousands by filing date
ASSEMBLY BIOSCIENCES INC045396908CALL148,100$5,500,000thousands by filing datecall
Mersana Therapeutics Inc59045L106Common Stock495,618$4,956,000thousands by filing date
KADMON HLDGS INC48283N106COM1,480,870$4,946,000thousands by filing date
IONIS PHARMACEUTICALS INC COM462222100Stock72,326$3,731,000thousands by filing date
ONCONOVA THERAPEUTIC68232V405Common Stock500,000$3,670,000thousands by filing date
TECTONIC THERAPEUTIC INC COM05455M100Stock68,646$3,561,000thousands by filing date
JOUNCE THERAPEUTICS INC481116901CALL497,400$3,233,000thousands by filing datecall
CORVUS PHARMACEUTICALS INC221015100COM351,401$3,015,000thousands by filing date
WAVE LIFE SCIENCES LTD SHSY95308105Stock44,841$2,242,000thousands by filing date
CONSTELLATION PHARMACEUTICALS INC.210373106Common Stock280,000$1,884,000thousands by filing date
FORTY SEVEN INC34983P104COM99,000$1,477,000thousands by filing date
CHIASMA INC16706W102COM379,753$1,367,000thousands by filing date
INFINITY PHARMACEUTICALS INC45665G303COM462,068$1,252,000thousands by filing date
APTINYX INC03836N103COM41,037$1,188,000thousands by filing date
ARVINAS INC04335A105COM50,000$844,000thousands by filing date
PHAXIAM THERAPEUTICS S A29604W108SPONSORED ADR69,569$590,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001567619-18-006356this filing2018-11-14acceptance time not in the bulk data set