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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$160M
Fidelity Investments
2
Fidelity Investments
Massachusetts
$112M +$68.2K +4,326 +0.1%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$71.1M +$15M +952,088 +23%
BlackRock
4
BlackRock
New York
$57.1M +$1.48M +93,989 +2%
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$51M -$2.16M -136,726 -4%
AC
6
Armistice Capital
New York
$31M +$9.24M +586,000 +36%
State Street
7
State Street
Massachusetts
$25.8M +$2.95M +186,732 +11%
PAI
8
Palo Alto Investors
California
$24.1M
Vanguard Group
9
Vanguard Group
Pennsylvania
$19.4M +$2.28M +144,737 +11%
SL
10
Siren LLC
Connecticut
$15.2M
Geode Capital Management
11
Geode Capital Management
Massachusetts
$13.4M +$13.1K +829 +0.1%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$12M +$170K +10,783 +1%
Federated Hermes
13
Federated Hermes
Pennsylvania
$10.3M +$5.38M +341,274 +84%
Morgan Stanley
14
Morgan Stanley
New York
$9.96M +$3.2K +203 +0%
BCM
15
Boxer Capital Management
California
$9.56M +$10.9M +690,000 New
FC
16
Finepoint Capital
Massachusetts
$9.1M +$3.53M +223,600 +52%
RSCM
17
Rock Springs Capital Management
Maryland
$8.93M +$308K +19,553 +3%
Goldman Sachs
18
Goldman Sachs
New York
$7.71M +$2.23M +141,237 +34%
PM
19
Prosight Management
Texas
$5.79M -$1.03M -65,345 -14%
Northern Trust
20
Northern Trust
Illinois
$5.6M +$502K +31,841 +9%
JP Morgan Chase
21
JP Morgan Chase
New York
$5.36M +$2.96M +187,364 +94%
UBS AM
22
UBS AM
Illinois
$5.28M -$2.29M -145,240 -28%
UBS Group
23
UBS Group
Switzerland
$5.14M +$4.87M +308,781 +494%
Mariner
24
Mariner
Kansas
$4.76M +$327K +20,704 +6%
Charles Schwab
25
Charles Schwab
California
$4.53M +$34.5K +2,189 +0.7%