William Blair & Company
ONCE

William Blair & Company’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

William Blair & Company’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
Q4 		– Sell
-8,270
Closed -$451K – 1821
2018
Q3 		$451K Sell
8,270
-1,250
-13% -$85.5K ﹤0.01% 991
2018
Q2 		$788K Buy
9,520
+230
+2% +$17.8K 0.01% 808
2018
Q1 		$619K Buy
9,290
+4,350
+88% +$251K ﹤0.01% 852
2017
Q4 		$254K Buy
+4,940
New +$355K ﹤0.01% 1185

Other funds holding ONCE

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
PHS
PFM Health Sciences San Francisco, California $1.17B AUM 92.19% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return

William Blair & Company's ONCE Position: Q4 2018 in Review

William Blair & Company sold out of Spark Therapeutics, Inc. Common Stock (ONCE) in Q4 2018, closing a stake of 8,270 shares — an estimated $451K sold.

William Blair & Company first reported a position in ONCE in Q4 2017 and held it in 4 quarters. The position peaked at $788K in Q2 2018. 157 funds tracked by Wall St. Rank hold ONCE as of Q4 2018.

  • William Blair & Company reported no remaining Spark Therapeutics, Inc. Common Stock position as of Q4 2018 after selling out during the quarter.
  • William Blair & Company sold 8,270 Spark Therapeutics, Inc. Common Stock shares in Q4 2018, an estimated $451K.
  • William Blair & Company first reported a position in Spark Therapeutics, Inc. Common Stock in Q4 2017 and held it in 4 quarters.
  • William Blair & Company's Spark Therapeutics, Inc. Common Stock position peaked at $788K in Q2 2018.
  • 157 funds tracked by Wall St. Rank held Spark Therapeutics, Inc. Common Stock as of Q4 2018.

Based on William Blair & Company's 13F filing for Q4 2018, filed 14 Feb 2019.