EcoR1 Capital, LLC

Q4 2014 13F Holdings Report, Stock Holdings

Notable people: Oleg Nodelman
Signature - Title: Oleg Nodelman - Manager
Location: San Francisco
Holdings as of: December 31, 2014
Value $: $189M
Num holdings: 21
Date filed: 2/17/2015, 03:13 PM
Form type: 13F-HR
Description: All US holdings of this investor are reported in this report. Top holdings included KITE, CLVSQ, RCPT, MGNX, and IRWD.
Next filing: Q1 2015 - May 18, 2015
SEC: View on sec.gov
Options Holdings: Showing stock holdings, see here for options holdings

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

Compare Q4 2014 to

* 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	2/17/2015

Other Included Managers (1):

Num	Name	Location	File Number
1	Oleg Nodelman	San Francisco, CA