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

RS Investment 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
2016 Q2	$22.5M	Sell	439,094 -101,293	-19%	-$4.33M	0.23%	163
2016 Q1	$15.9M	Buy	540,387 +88,038	+19%	+$2.78M	0.16%	201
2015 Q4	$20.5M	Buy	452,349 +9,957	+2%	+$522K	0.18%	176
2015 Q3	$18.5M	Buy	442,392 +95,830	+28%	+$5M	0.16%	190
2015 Q2	$20.9M	Buy	346,562 +115,400	+50%	+$7.63M	0.18%	189
2015 Q1	$17.9M	Buy	+231,162	New	+$13.3M	0.16%	198

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

Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 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

BBA

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

Lord, Abbett & Co Jersey City, New Jersey $30.6B AUM 57.44% 1-Year Est. Return

BFA

BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return

ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return

RSCM

Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return

RS Investment Management's ONCE Position: Q2 2016 in Review

RS Investment Management reduced its Spark Therapeutics, Inc. Common Stock (ONCE) stake by 19% in Q2 2016, selling an estimated $4.33M and leaving 439,094 shares worth $22.5M. The position accounts for 0.23% of the portfolio, ranked #163.

RS Investment Management first reported a position in ONCE in Q1 2015 and has held it in 6 quarters since. 115 funds tracked by Wall St. Rank hold ONCE as of Q2 2016.

RS Investment Management held 439,094 shares of Spark Therapeutics, Inc. Common Stock worth $22.5M as of Q2 2016.
RS Investment Management sold 101,293 Spark Therapeutics, Inc. Common Stock shares in Q2 2016, an estimated $4.33M.
Spark Therapeutics, Inc. Common Stock made up 0.23% of RS Investment Management's portfolio in Q2 2016, its #163 holding.
RS Investment Management first reported a position in Spark Therapeutics, Inc. Common Stock in Q1 2015 and has held it in 6 quarters since.
115 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q2 2016.

Based on RS Investment Management's 13F filing for Q2 2016, filed 26 Jul 2016.