ONCE

Spark Therapeutics, Inc. Common Stock
ONCE

Overview Fund Activity
Delisted

ONCE was delisted on the 16th of December, 2019.

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194 hedge funds and large institutions have $3.63B invested in Spark Therapeutics, Inc. Common Stock in 2019 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 67 increasing their positions, 57 reducing their positions, and 45 closing their positions.

Holders
194
Holders Change
-5
Holders Change %
-2.51%
% of All Funds
4.22%
Holding in Top 10
20
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-9.09%
% of All Funds
0.44%
New
43
Increased
67
Reduced
57
Closed
45
Calls
$76.4M
Puts
$70.3M
Net Calls
+$6.11M
Net Calls Change
-$24.9M

Top Buyers

1
PCM
1
Pentwater Capital Management
Florida
$79.9M
2
PC
2
Paulson & Co
New York
$77.6M
3
BC
3
Boxer Capital
California
$61.4M
4
TAL
4
TIG Advisors LLC
New York
$61.3M
5
Renaissance Technologies
5
Renaissance Technologies
New York
$39.9M

Top Sellers

1
WIC
1
Water Island Capital
New York
$23.4M
2
Federated Hermes
2
Federated Hermes
Pennsylvania
$14.8M
3
BCM
3
Beryl Capital Management
California
$0
4
Goldman Sachs
4
Goldman Sachs
New York
$56.9M
5
CI
5
Cowen Inc
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$325M 3,177,757 +166,399 +6%
BlackRock
2
BlackRock
New York
$282M 2,756,280 -186,616 -6%
State Street
3
State Street
Massachusetts
$134M 1,304,325 +283,521 +28%
MF
4
Magnetar Financial
Illinois
$90.6M 885,199 -31,040 -3%
CC
5
Casdin Capital
New York
$90.6M 884,800 -55,200 -6%
AAM
6
Alpine Associates Management
Florida
$80.3M 784,100 +91,800 +13%
PCM
7
Pentwater Capital Management
Florida
$79.9M 780,000 +780,000 New
FCM
8
Farallon Capital Management
California
$78.8M 770,000 -50,000 -6%
PC
9
Paulson & Co
New York
$77.6M 757,807 +757,807 New
BBA
10
Baker Bros. Advisors
New York
$77M 751,927 – –
AA
11
AQR Arbitrage
Connecticut
$74.3M 726,169 -62,824 -8%
T. Rowe Price Associates
12
T. Rowe Price Associates
Maryland
$71.1M 694,696 +2,381 +0.3%
JPMorgan Chase & Co
13
JPMorgan Chase & Co
New York
$69.8M 683,015 -347,827 -34%
Millennium Management
14
Millennium Management
New York
$67.9M 662,849 -31 -0%
Citadel Advisors
15
Citadel Advisors
Florida
$64.7M 632,176 +22,469 +4%
GF
16
Gabelli Funds
New York
$63.7M 622,467 +30,329 +5%
EC
17
EcoR1 Capital
California
$62.9M 614,128 +85,128 +16%
BC
18
Boxer Capital
California
$61.4M 600,000 +600,000 New
TAL
19
TIG Advisors LLC
New York
$61.3M 598,756 +598,756 New
Adage Capital Partners
20
Adage Capital Partners
Massachusetts
$59.8M 584,332 +34,332 +6%
Goldman Sachs
21
Goldman Sachs
New York
$56.9M 555,794 -580,300 -51%
D.E. Shaw & Co
22
D.E. Shaw & Co
New York
$53.3M 520,600 +309,229 +146%
RSCM
23
Rock Springs Capital Management
Maryland
$51.7M 505,371 -32,129 -6%
SI
24
Sofinnova Investments
California
$49.3M 481,270 – –
IA
25
IndexIQ Advisors
New York
$46M 449,485 -218,402 -33%
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