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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$143M
Fidelity Investments
2
Fidelity Investments
Massachusetts
$98.3M -$1.84M -129,907 -2%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$64.3M +$971K +68,652 +1%
BlackRock
4
BlackRock
New York
$50M -$1.13M -80,075 -2%
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$42.8M -$3.25M -229,852 -6%
AC
6
Armistice Capital
New York
$27.2M -$566K -40,000 -2%
PAI
7
Palo Alto Investors
California
$20.5M -$1.11M -78,230 -5%
State Street
8
State Street
Massachusetts
$18.8M -$4.81M -340,277 -18%
SL
9
Siren LLC
Connecticut
$15.9M +$2.6M +183,715 +17%
Vanguard Group
10
Vanguard Group
Pennsylvania
$15.7M -$1.9M -134,567 -10%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$12.6M +$714K +50,484 +5%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$10.7M -$23.8K -1,685 -0.2%
Morgan Stanley
13
Morgan Stanley
New York
$8.91M +$7.04K +498 +0.1%
BCM
14
Boxer Capital Management
California
$8.54M
FC
15
Finepoint Capital
Massachusetts
$7.92M -$240K -17,000 -3%
Federated Hermes
16
Federated Hermes
Pennsylvania
$6.76M -$2.83M -199,922 -27%
Goldman Sachs
17
Goldman Sachs
New York
$6.32M -$651K -46,064 -8%
RSCM
18
Rock Springs Capital Management
Maryland
$6.1M -$2.15M -152,000 -24%
PM
19
Prosight Management
Texas
$5.05M -$141K -10,000 -2%
UBS AM
20
UBS AM
Illinois
$4.72M +$2.04K +144 +0%
Northern Trust
21
Northern Trust
Illinois
$4.62M -$435K -30,793 -8%
JP Morgan Chase
22
JP Morgan Chase
New York
$4.6M -$218K -15,385 -4%
Mariner
23
Mariner
Kansas
$4.39M +$152K +10,733 +3%
BC
24
Birchview Capital
Vermont
$4.12M +$402K +28,400 +9%
Charles Schwab
25
Charles Schwab
California
$3.96M -$107K -7,544 -2%