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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$580M +$7.8M +250,000 +2%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$299M +$78.3M +2,510,739 +76%
BlackRock
3
BlackRock
New York
$189M +$2.83M +90,840 +3%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$143M -$10.5M -337,909 -11%
FLAM
5
First Light Asset Management
Minnesota
$99.1M -$31.4M -1,007,878 -34%
PAI
6
Palo Alto Investors
California
$89M -$344K -11,023 -0.6%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$81.5M +$195K +6,259 +0.4%
State Street
8
State Street
Massachusetts
$63.2M +$755K +24,187 +2%
RG
9
Redmile Group
California
$62.5M -$20M -641,415 -35%
RSCM
10
Rock Springs Capital Management
Maryland
$48.8M -$6.45M -206,809 -18%
Vanguard Group
11
Vanguard Group
Pennsylvania
$35M +$3.41M +109,420 +19%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$29M +$2.24M +71,775 +15%
Nuveen
13
Nuveen
North Carolina
$23.1M +$2.41M +77,164 +21%
Northern Trust
14
Northern Trust
Illinois
$22.7M +$3.12M +100,009 +29%
Two Sigma Advisers
15
Two Sigma Advisers
New York
$21.7M +$2.36M +75,500 +22%
PM
16
Prosight Management
Texas
$21.7M -$5.55M -178,000 -30%
UBS AM
17
UBS AM
Illinois
$20.7M +$1.55M +49,641 +14%
Two Sigma Investments
18
Two Sigma Investments
New York
$17.3M +$1.27M +40,612 +14%
Invesco
19
Invesco
Georgia
$15.2M +$2.11M +67,574 +30%
Renaissance Technologies
20
Renaissance Technologies
New York
$12.3M -$1.58M -50,700 -18%
ACM
21
Atika Capital Management
New York
$12M +$6.74M +216,094 +1,207%
Charles Schwab
22
Charles Schwab
California
$10.6M +$638K +20,435 +11%
PA
23
Pinnacle Associates
New York
$10.6M -$2.3M -73,642 -26%
Adage Capital Partners
24
Adage Capital Partners
Massachusetts
$10.3M +$6.24M +200,000 New
APM
25
Avidity Partners Management
Texas
$9.36M +$5.68M +182,000 New