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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$194M
Fidelity Investments
2
Fidelity Investments
Massachusetts
$135M +$28.1K +1,306 +0%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$69.9M +$11.6M +539,359 +15%
BlackRock
4
BlackRock
New York
$67.4M +$3.68M +171,308 +4%
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$64M -$8.92M -414,970 -10%
PAI
6
Palo Alto Investors
California
$29.1M +$1.54M +71,586 +4%
State Street
7
State Street
Massachusetts
$28M -$5.54M -257,563 -13%
AC
8
Armistice Capital
New York
$27.6M +$1.94M +90,000 +6%
Vanguard Group
9
Vanguard Group
Pennsylvania
$21.1M +$1.88M +87,354 +7%
SL
10
Siren LLC
Connecticut
$18.4M +$23.6M +1,099,840 New
Geode Capital Management
11
Geode Capital Management
Massachusetts
$16.1M -$662K -30,799 -3%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$14.3M -$162K -7,534 -0.9%
Morgan Stanley
13
Morgan Stanley
New York
$12M -$1.97M -91,416 -11%
BC
14
Boxer Capital
California
$11.5M
RSCM
15
Rock Springs Capital Management
Maryland
$10.5M
UBS AM
16
UBS AM
Illinois
$8.81M +$10.4M +483,673 +1,123%
PM
17
Prosight Management
Texas
$8.09M +$4.23M +196,541 +68%
FC
18
Finepoint Capital
Massachusetts
$7.25M
Goldman Sachs
19
Goldman Sachs
New York
$6.95M +$1.4M +65,159 +19%
Federated Hermes
20
Federated Hermes
Pennsylvania
$6.77M +$7.76M +361,042 +823%
Northern Trust
21
Northern Trust
Illinois
$6.23M +$184K +8,549 +2%
Charles Schwab
22
Charles Schwab
California
$5.44M -$46.8K -2,177 -0.7%
Mariner
23
Mariner
Kansas
$5.41M +$2.69M +125,178 +63%
GIM
24
Granahan Investment Management
Massachusetts
$5.23M -$498K -23,140 -7%
PA
25
Pinnacle Associates
New York
$4.57M +$61.2K +2,847 +2%