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

Essex 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
2017 Q4	–	Sell	-5,298	Closed	-$472K	–	400
2017 Q3	$472K	Sell	5,298 -5,536	-51%	-$420K	0.06%	270
2017 Q2	$647K	Buy	+10,834	New	+$605K	0.09%	238
2015 Q4	–	Sell	-6,966	Closed	-$291K	–	349
2015 Q3	$291K	Hold	6,966	–	–	0.05%	270
2015 Q2	$420K	Buy	+6,966	New	+$461K	0.06%	242

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

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

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

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

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

BBA

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

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Essex Investment Management's ONCE Position: Q4 2017 in Review

Essex Investment Management sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q4 2017, closing a stake of 5,298 shares — an estimated $472K sold.

Essex Investment Management first reported a position in ONCE in Q2 2015 and held it in 4 quarters. The position peaked at $647K in Q2 2017. 160 funds tracked by Wall St. Rank hold ONCE as of Q4 2017.

Essex Investment Management reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q4 2017 after selling out during the quarter.
Essex Investment Management sold 5,298 Spark Therapeutics, Inc. Common Stock shares in Q4 2017, an estimated $472K.
Essex Investment Management first reported a position in Spark Therapeutics, Inc. Common Stock in Q2 2015 and held it in 4 quarters.
Essex Investment Management's Spark Therapeutics, Inc. Common Stock position peaked at $647K in Q2 2017.
160 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q4 2017.

Based on Essex Investment Management's 13F filing for Q4 2017, filed 5 Feb 2018.