EcoR1 Capital, LLC

Q4 2019 13F Holdings Report, Restatement, Stock Holdings

Notable people: Oleg Nodelman
Signature - Title: Oleg Nodelman - Manager
Location: San Francisco, CA
Holdings as of: 31 Dec 2019
Value $: $1,054,034,000
Num holdings: 42
Filing time: 18 Feb 2020, 16:31:49 UTC
Form type: 13F-HR/A-1 - Restatement
Description: All US holdings of this investor are reported in this report. Top holdings included PRTA, XNCR, DRNA, FGEN, and KURA.
Previous filing: Q3 2019 - 14 Nov 2019
Next filing: Q1 2020 - 15 May 2020
SEC: View on sec.gov
Options Holdings: Showing stock holdings, see here for options holdings

Sym	Weight	Trade Impact	Company	Class	Share Change	Activity	Value Change $	Value $	* Price $	Shares	Principal

Filing 2019 Q4 - Restatement compared to 2019 Q3 by default. Changes are calculated vs the previous SEC filing.

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* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.

Person Signing this Report on Behalf of Reporting Manager:

Name	Title	City, State	Date
Oleg Nodelman	Manager	San Francisco, California	18 Feb 2020