EcoR1 Capital, LLC

Holdings History for ACCELERON PHARMA INC - COMMON STOCK (XLRN)

Symbol: XLRN
Investment type: Equity / COMMON STOCK

Shares, Excluding Options vs Price

Value, Excluding Options

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2016		-5.8%	$0	0	-371,381	-100%	$179.00	Q3 2016
30 Jun 2016	5.8%	+1.6%	$12,620,000	371,381	+101,092	+37%	$33.98	Q2 2016
31 Mar 2016	2.9%	+2.9%	$7,133,000	270,289	+270,289	NEW	$26.39	Q1 2016

* 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.