Rafferty Asset Management’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q4	–	Sell	-61,872	Closed	-$6M	–	920
2019 Q3	$6M	Buy	61,872 +11,269	+22%	+$1.13M	0.09%	127
2019 Q2	$5.18M	Buy	50,603 +22,573	+81%	+$2.44M	0.09%	156
2019 Q1	$3.19M	Buy	+28,030	New	+$2.06M	0.05%	208