BlackRock Advisors’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

BlackRock Advisors’s Portfolio ONCE Stock Details ONCE Fund Activity

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Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2016 Q4	$6.34M	Buy
2016 Q3	$6.05M	Buy
2016 Q2	$481K	Buy
2016 Q1	$141K	Buy
2015 Q4	$194K	Sell
2015 Q3	$6.48M	Sell
2015 Q2	$19.1M	Sell
2015 Q1	$34.3M	Buy