BA
ONCE

BlackRock Advisors’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

BlackRock Advisors’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
Q4 		$6.34M Buy
127,069
+26,374
+26% +$1.41M 0.01% 1049
2016
Q3 		$6.05M Buy
100,695
+91,287
+970% +$5.26M 0.01% 1057
2016
Q2 		$481K Buy
9,408
+4,618
+96% +$197K ﹤0.01% 2140
2016
Q1 		$141K Buy
4,790
+511
+12% +$16.1K ﹤0.01% 2742
2015
Q4 		$194K Sell
4,279
-151,084
-97% -$7.92M ﹤0.01% 2588
2015
Q3 		$6.48M Sell
155,363
-162,014
-51% -$8.45M 0.01% 988
2015
Q2 		$19.1M Sell
317,377
-124,867
-28% -$8.26M 0.02% 537
2015
Q1 		$34.3M Buy
+442,244
New +$25.5M 0.04% 399

Other funds holding ONCE

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Federated Hermes
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
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
BFA
BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return
SMV
Sofinnova Management VIII Menlo Park, California $183M AUM 4.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return