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

Perceptive Advisors’s Portfolio ONCE Stock Details ONCE Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q4	–	Sell	-350,000	Closed	-$33.9M	–	135
2019 Q3	$33.9M	Hold	350,000	–	–	0.91%	31
2019 Q2	$35.8M	Buy	+350,000	New	+$37.8M	0.82%	31
2017 Q4	–	Sell	-180,000	Closed	-$16M	–	167
2017 Q3	$16M	Buy	+180,000	New	+$13.7M	0.61%	39
2015 Q2	–	Sell	-15,000	Closed	-$1.16M	–	197
2015 Q1	$1.16M	Buy	+15,000	New	+$864K	0.09%	95

Perceptive Advisors's ONCE Position: Q4 2019 in Review

Perceptive Advisors sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q4 2019, closing a stake of 350,000 shares — an estimated $33.9M sold.

Perceptive Advisors first reported a position in ONCE in Q1 2015 and held it in 4 quarters. The position peaked at $35.8M in Q2 2019. 0 funds tracked by Wall St. Rank hold ONCE as of Q4 2019.

Perceptive Advisors reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q4 2019 after selling out during the quarter.
Perceptive Advisors sold 350,000 Spark Therapeutics, Inc. Common Stock shares in Q4 2019, an estimated $33.9M.
Perceptive Advisors first reported a position in Spark Therapeutics, Inc. Common Stock in Q1 2015 and held it in 4 quarters.
Perceptive Advisors's Spark Therapeutics, Inc. Common Stock position peaked at $35.8M in Q2 2019.
0 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q4 2019.

Based on Perceptive Advisors's 13F filing for Q4 2019, filed 14 Feb 2020.