EcoR1 Capital, LLC Q3 2019 Filing

Filed November 14, 2019

Portfolio Value

$791.9B

Holdings

36

Report Date

Q3 2019

Filing Type

13F-HR

All Holdings (36 positions)

#StockSharesValue% PortfolioType
1
XNCRXENCOR ORD
2,501,557$84.4B10.66%
2
PRTAPROTHENA ORD
9,426,640$73.9B9.33%
3
FGENEURFIBROGEN ORD
1,946,307$72.0B9.09%Call
4
SPARK THERAPEUTICS ORD
714,789$69.3B8.75%
5
KURAKURA ONCOLOGY ORD
4,041,953$61.3B7.74%
6
ARGXARGENX ADR REP ORD
531,165$60.5B7.64%
7
DICERNA PHARMACEUTICALS ORD
3,962,978$56.9B7.19%
8
IRWDIRONWOOD PHARMA CL A ORD
4,671,408$40.1B5.06%
9
MORFMORPHIC HOLDING ORD
2,161,520$39.1B4.94%
10
SLDBSOLID BIOSCIENCES ORD
3,342,691$34.6B4.36%
11
PREVAIL THERAPEUTICS ORD
2,392,556$29.4B3.71%
12
HARPOON THERAPEUTICS ORD
1,463,423$20.0B2.52%
13
BCELATRECA CL A ORD
1,481,411$18.1B2.29%
14
CHIASMA ORD
3,043,827$15.1B1.90%
15
SRPTSAREPTA THERAPEUTICS ORD
189,745$14.3B1.80%
16
EXICURE ORD
5,515,225$14.0B1.76%
17
GOSSGOSSAMER BIO INC ORD
800,000$13.4B1.70%Call
18
CLDNEUREIGER BIOPHARMACEUTICAL ORD
1,060,043$10.9B1.37%
19
CYCLERION THERAPEUTICS ORD
776,206$9.4B1.19%
20
NXTCNEXTCURE ORD
250,500$7.7B0.98%
21
RCUSARCUS BIOSCIENCES ORD
754,505$6.9B0.87%
22
CURIS ORD
2,982,208$6.7B0.84%
23
NEOLEUKIN THERAPEUTICS ORD
2,265,880$6.5B0.82%
24
ASMBASSEMBLY BIOSCIENCES ORD
594,900$5.8B0.74%Call
25
MRTXEURMIRATI THERAPEUTICS ORD
44,221$3.4B0.44%
26
MRUSMERUS ORD
165,600$3.0B0.37%
27
RAREULTRAGENYX PHARMACEUTICAL ORD
61,554$2.6B0.33%
28
SURFUSDSURFACE ONCOLOGY ORD
1,548,888$2.2B0.28%
29
RUBYUSDRUBIUS THERAPEUTICS ORD
260,152$2.0B0.26%
30
VCELVERICEL ORD
131,001$2.0B0.25%
31
1K0IGM BIOSCIENCES ORD
100,000$1.8B0.22%
32
ZAFGEN ORD
1,944,500$1.4B0.18%
33
QNCXCORTEXYME ORD
49,993$1.2B0.16%
34
AUTLAUTOLUS THERAPEUTICS ADR
69,155$859.0M0.11%
35
REGULUS THERAPEUTICS ORD
1,049,088$755.0M0.10%
36
UNITY BIOTECHNOLOGY ORD
51,400$314.0M0.04%