Ghost Tree Capital’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

Ghost Tree Capital’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 Q3	–	Sell	-50,000	Closed	-$5.12M	–	56
2019 Q2	$5.12M	Buy	+50,000	New	+$5.4M	1.06%	28
2017 Q4	–	Sell	-80,000	Closed	-$7.13M	–	84
2017 Q3	$7.13M	Buy	80,000 +45,000	+129%	+$3.42M	1.51%	26
2017 Q2	$2.09M	Sell	35,000 -165,000	-83%	-$9.22M	0.43%	62
2017 Q1	$10.7M	Buy	200,000 +120,000	+150%	+$7.12M	1.99%	13
2016 Q4	$3.99M	Buy	+80,000	New	+$4.29M	0.96%	42
2015 Q4	–	Sell	-10,000	Closed	-$417K	–	80
2015 Q3	$417K	Buy	+10,000	New	+$522K	0.19%	67

Other funds holding ONCE

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

PCM

Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return

Boxer Capital San Diego, California $2.04B AUM 108.39% 1-Year Est. Return

Paulson & Co New York $3.11B AUM 94.93% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Casdin Capital New York $1.32B AUM 76.62% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return

AAM

Alpine Associates Management Palm Beach, Florida $1.7B AUM 97.55% 1-Year Est. Return

Magnetar Financial Evanston, Illinois $9.84B AUM 190.64% 1-Year Est. Return

Ghost Tree Capital's ONCE Position: Q3 2019 in Review

Ghost Tree Capital sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q3 2019, closing a stake of 50,000 shares — an estimated $5.12M sold.

Ghost Tree Capital first reported a position in ONCE in Q3 2015 and held it in 6 quarters. The position peaked at $10.7M in Q1 2017. 184 funds tracked by Wall St. Rank hold ONCE as of Q3 2019.

Ghost Tree Capital reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q3 2019 after selling out during the quarter.
Ghost Tree Capital sold 50,000 Spark Therapeutics, Inc. Common Stock shares in Q3 2019, an estimated $5.12M.
Ghost Tree Capital first reported a position in Spark Therapeutics, Inc. Common Stock in Q3 2015 and held it in 6 quarters.
Ghost Tree Capital's Spark Therapeutics, Inc. Common Stock position peaked at $10.7M in Q1 2017.
184 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q3 2019.

Based on Ghost Tree Capital's 13F filing for Q3 2019, filed 14 Nov 2019.