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

Deerfield Management’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
2017 Q2	–	Sell	-283,000	Closed	-$15.1M	–	105
2017 Q1	$15.1M	Hold	283,000	–	–	0.58%	55
2016 Q4	$14.1M	Sell	283,000 -85,000	-23%	-$4.55M	0.58%	53
2016 Q3	$22.1M	Hold	368,000	–	–	1.03%	33
2016 Q2	$18.8M	Buy	+368,000	New	+$15.7M	0.74%	45
2015 Q3	–	Sell	-631,192	Closed	-$38M	–	147
2015 Q2	$38M	Hold	631,192	–	–	1.27%	24
2015 Q1	$48.9M	Buy	+631,192	New	+$36.4M	1.58%	16

Other funds holding ONCE

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

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

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

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

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Deerfield Management's ONCE Position: Q2 2017 in Review

Deerfield Management sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q2 2017, closing a stake of 283,000 shares — an estimated $15.1M sold.

Deerfield Management first reported a position in ONCE in Q1 2015 and held it in 6 quarters. The position peaked at $48.9M in Q1 2015. 127 funds tracked by Wall St. Rank hold ONCE as of Q2 2017.

Deerfield Management reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q2 2017 after selling out during the quarter.
Deerfield Management sold 283,000 Spark Therapeutics, Inc. Common Stock shares in Q2 2017, an estimated $15.1M.
Deerfield Management first reported a position in Spark Therapeutics, Inc. Common Stock in Q1 2015 and held it in 6 quarters.
Deerfield Management's Spark Therapeutics, Inc. Common Stock position peaked at $48.9M in Q1 2015.
127 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q2 2017.

Based on Deerfield Management's 13F filing for Q2 2017, filed 14 Aug 2017.