Parallax Volatility Advisers’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

Parallax Volatility Advisers’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
2018 Q3	–	Sell	-10,000	Closed	-$828K	–	3986
2018 Q2	$828K	Hold	10,000	–	–	﹤0.01%	1146
2018 Q1	$666K	Buy	+10,000	New	+$577K	﹤0.01%	1052
2017 Q4	–	Sell	-17,500	Closed	-$1.56M	–	5280
2017 Q3	$1.56M	Buy	+17,500	New	+$1.33M	﹤0.01%	920

Other funds holding ONCE

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

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 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

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

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

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

BBA

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

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

PHS

PFM Health Sciences San Francisco, California $1.1B AUM 57.92% 1-Year Est. Return

Parallax Volatility Advisers's ONCE Position: Q1 2018 in Review

Parallax Volatility Advisers sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q1 2018, closing a stake of 23,171 shares — an estimated $1.34M sold.

Parallax Volatility Advisers first reported a position in ONCE in Q2 2015 and held it in 3 quarters. The position peaked at $1.19M in Q4 2017. 162 funds tracked by Wall St. Rank hold ONCE as of Q1 2018.

Parallax Volatility Advisers reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q1 2018 after selling out during the quarter.
Parallax Volatility Advisers sold 23,171 Spark Therapeutics, Inc. Common Stock shares in Q1 2018, an estimated $1.34M.
Parallax Volatility Advisers first reported a position in Spark Therapeutics, Inc. Common Stock in Q2 2015 and held it in 3 quarters.
Parallax Volatility Advisers's Spark Therapeutics, Inc. Common Stock position peaked at $1.19M in Q4 2017.
162 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q1 2018.

Based on Parallax Volatility Advisers's 13F filing for Q1 2018, filed 15 May 2018.