EcoR1 Capital’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2019
Q4
Sell
-714,789
Closed -$69.3M 58
2019
Q3
$69.3M Buy
714,789
+100,661
+16% +$10.1M 9.25% 3
2019
Q2
$62.9M Buy
614,128
+85,128
+16% +$9.19M 6.48% 6
2019
Q1
$60.2M Sell
529,000
-607,851
-53% -$44.7M 6.52% 6
2018
Q4
$44.5M Buy
1,136,851
+299,803
+36% +$13M 5.12% 6
2018
Q3
$45.7M Buy
+837,048
New +$57.2M 4.73% 8
2018
Q1
Hold
0
44
2017
Q4
Hold
0
55
2016
Q4
Sell
-68,600
Closed -$4.12M 43
2016
Q3
$4.12M Buy
+68,600
New +$3.95M 1.57% 22
2016
Q2
Sell
-8,700
Closed -$257K 46
2016
Q1
$257K Buy
+8,700
New +$274K 0.1% 36