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13F-HR filed by EcoR1 Capital, LLC

EcoR1 Capital, LLC filed this 13F-HR for the quarter ended 2017-06-30, filed 2017-08-14, with 36 holding rows worth $563,229,000.

Accession
0001140361-17-032004
Filed
2017-08-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2017

A holdings report, 36 entries on the cover page, a total value of $563,229,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $563,229,000 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
ALEXION PHARMACEUTICALS INC015351909COM569,500$78,215,000thousands by filing datecall
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK3,753,635$70,869,000thousands by filing date
ASSEMBLY BIOSCIENCES INC045396108COM2,943,164$60,776,000thousands by filing date
FIBROGEN INC31572Q808COM1,585,457$51,210,000thousands by filing date
LAKEFRONT BIOTHERAPEUTICS NV36315X101SPON ADR578,505$44,267,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR1,482,600$41,157,000thousands by filing date
GILEAD SCIENCES INC375558903COM500,000$38,045,000thousands by filing datecall
SANGAMO THERAPEUTICS INC800677106COM2,568,119$22,599,000thousands by filing date
KURA ONCOLOGY INC COM50127T109Stock2,033,622$18,913,000thousands by filing date
TOCAGEN INC888846102COM1,502,373$18,074,000thousands by filing date
CYTOMX THERAPEUTICS INC23284F105COMMON STOCK794,969$12,322,000thousands by filing date
EDITAS MEDICINE INC28106W103COM717,107$12,033,000thousands by filing date
CASCADIAN THERAPEUTICS INC14740B606COM NEW3,000,000$11,145,000thousands by filing date
CORVUS PHARMACEUTICALS INC221015100COM805,000$9,741,000thousands by filing date
VERTEX PHARMACEUTICALS INC92532F900CALL60,000$9,109,000thousands by filing datecall
FATE THERAPEUTICS INC31189P102COM2,537,026$8,220,000thousands by filing date
ATYR PHARMA INC002120103COM2,292,659$7,795,000thousands by filing date
OVASCIENCE INC69014Q101COM3,512,332$5,479,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock185,472$5,030,000thousands by filing date
KINDRED BIOSCIENCES INC COM494577109Stock544,880$4,686,000thousands by filing date
TETRAPHASE PHARMACEUTICALS INC88165N105COMMON STOCK633,400$4,516,000thousands by filing date
EDITAS MEDICINE INC28106W903COM255,000$4,315,000thousands by filing datecall
REGULUS THERAPEUTICS INC75915K101COM3,709,144$3,656,000thousands by filing date
ACHILLION PHARMACEUTICALS IN00448Q201COM742,835$3,410,000thousands by filing date
NABRIVA THERAPEUTICS PLCG63637105SHS264,773$2,775,000thousands by filing date
DICERNA PHARMACEUTICALS INC253031108COM767,992$2,435,000thousands by filing date
Adverum Biotechnologies, Inc.00773U108Common Stock874,447$2,186,000thousands by filing date
MINERVA NEUROSCIENCES INC COM NEW603380106Stock223,802$1,981,000thousands by filing date
BIOHAVEN PHARMACEUTICAL HOLDING11196105COM70,000$1,750,000thousands by filing date
AGIOS PHARMACEUTICALS INC00847X104COM23,300$1,199,000thousands by filing date
CHEMOCENTRYX INC16383L106COM118,000$1,104,000thousands by filing date
Bristol-Myers Squibb Company110122108COM17,060$951,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM10,000$936,000thousands by filing date
ALNYLAM PHARMACEUTICALS INC COM02043Q107Stock10,425$831,000thousands by filing date
SEATTLE GENETICS INC812578102COM15,000$776,000thousands by filing date
ARATANA THERAPEUTICS INC03874P101COM100,000$723,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001140361-17-032004this filing2017-08-14acceptance time not in the bulk data set