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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$239M
Fidelity Investments
2
Fidelity Investments
Massachusetts
$166M +$1.28M +59,266 +0.7%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$87.5M +$771K +35,633 +0.8%
BlackRock
4
BlackRock
New York
$79.6M +$2.99M +138,266 +4%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$75.1M -$2.44M -112,718 -3%
State Street
6
State Street
Massachusetts
$39.9M -$33.4M -1,541,524 -44%
PAI
7
Palo Alto Investors
California
$34.4M +$63.4K +2,930 +0.2%
AC
8
Armistice Capital
New York
$32.2M +$10M +464,000 +42%
Vanguard Group
9
Vanguard Group
Pennsylvania
$24.2M +$1.01M +46,464 +4%
Janus Henderson Group
10
Janus Henderson Group
$21.2M -$6.12M -283,032 -22%
AG
11
Artal Group
Luxembourg
$20.7M
Geode Capital Management
12
Geode Capital Management
Massachusetts
$20.5M +$1.51M +69,698 +8%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$17.8M -$27K -1,248 -0.1%
Morgan Stanley
14
Morgan Stanley
New York
$16.7M +$3.42M +158,235 +24%
BC
15
Boxer Capital
California
$14.2M
RSCM
16
Rock Springs Capital Management
Maryland
$12.9M
FC
17
Finepoint Capital
Massachusetts
$8.95M +$672K +31,071 +8%
Northern Trust
18
Northern Trust
Illinois
$7.52M -$717K -33,157 -8%
Citadel Advisors
19
Citadel Advisors
Florida
$7.29M +$2.56M +118,227 +50%
Goldman Sachs
20
Goldman Sachs
New York
$7.23M +$892K +41,243 +13%
GIM
21
Granahan Investment Management
Massachusetts
$6.93M +$37.7K +1,740 +0.5%
Renaissance Technologies
22
Renaissance Technologies
New York
$6.8M -$1.3M -60,200 -15%
Charles Schwab
23
Charles Schwab
California
$6.75M +$178K +8,234 +3%
JP Morgan Chase
24
JP Morgan Chase
New York
$6.11M -$46K -2,126 -0.7%
PM
25
Prosight Management
Texas
$5.92M +$2.52M +116,457 +68%