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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$287M
Fidelity Investments
2
Fidelity Investments
Massachusetts
$198M -$1.29M -43,385 -0.5%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$104M -$1.06M -35,580 -0.8%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$92.9M +$34.5M +1,158,045 +45%
BlackRock
5
BlackRock
New York
$92.1M -$1.54M -51,837 -1%
State Street
6
State Street
Massachusetts
$86.1M +$21.3M +715,432 +26%
PAI
7
Palo Alto Investors
California
$41.2M +$101K +3,391 +0.2%
Janus Henderson Group
8
Janus Henderson Group
$32.4M -$21.6M -726,394 -36%
Vanguard Group
9
Vanguard Group
Pennsylvania
$27.9M +$1.63M +54,728 +5%
AC
10
Armistice Capital
New York
$27.1M +$24.3M +818,000 +294%
AG
11
Artal Group
Luxembourg
$24.8M +$14.9M +500,000 +100%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$22.9M +$579K +19,455 +2%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$21.4M -$143K -4,803 -0.6%
BC
14
Boxer Capital
California
$17.1M +$744K +25,000 +4%
Morgan Stanley
15
Morgan Stanley
New York
$16.2M -$9.28M -312,052 -32%
RSCM
16
Rock Springs Capital Management
Maryland
$15.5M
FLAM
17
First Light Asset Management
Minnesota
$11M -$19.2M -643,848 -59%
FC
18
Finepoint Capital
Massachusetts
$9.97M +$1.58M +53,100 +15%
Northern Trust
19
Northern Trust
Illinois
$9.84M -$204K -6,847 -2%
Renaissance Technologies
20
Renaissance Technologies
New York
$9.65M +$1.6M +53,900 +16%
UBS AM
21
UBS AM
Illinois
$9.29M +$2.48M +83,298 +29%
GIM
22
Granahan Investment Management
Massachusetts
$8.27M -$2.48M -83,237 -20%
Millennium Management
23
Millennium Management
New York
$7.98M +$8.47M +284,585 +756%
Charles Schwab
24
Charles Schwab
California
$7.9M +$169K +5,675 +2%
Goldman Sachs
25
Goldman Sachs
New York
$7.65M -$741K -24,899 -7%