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Prothena Corp

Name Holding Trade Value Shares
Change
Change in
Stake
EC
1
EcoR1 Capital
California
$424M +$10.8M +300,000 +3%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$224M +$5.94M +164,881 +3%
BlackRock
3
BlackRock
New York
$141M -$386K -10,714 -0.3%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$97.8M +$1.22M +33,873 +1%
State Street
5
State Street
Massachusetts
$86.6M +$14.2M +394,633 +20%
FLAM
6
First Light Asset Management
Minnesota
$67.2M +$7.77M +215,607 +13%
PAI
7
Palo Alto Investors
California
$61.5M -$137K -3,805 -0.2%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$55M +$239K +6,619 +0.4%
Vanguard Group
9
Vanguard Group
Pennsylvania
$32M -$934K -25,904 -3%
Nuveen
10
Nuveen
North Carolina
$27.3M +$8.14M +225,825 +45%
RG
11
Redmile Group
California
$26.9M -$1.06M -29,500 -4%
RSCM
12
Rock Springs Capital Management
Maryland
$24.3M +$570K +15,800 +2%
IBT
13
International Biotechnology Trust
United Kingdom
$23.8M
Geode Capital Management
14
Geode Capital Management
Massachusetts
$23.8M +$1.02M +28,401 +5%
PM
15
Prosight Management
Texas
$20.7M +$4.53M +125,538 +28%
Two Sigma Advisers
16
Two Sigma Advisers
New York
$15.2M +$281K +7,800 +2%
Renaissance Technologies
17
Renaissance Technologies
New York
$14.4M +$4.59M +127,400 +48%
Northern Trust
18
Northern Trust
Illinois
$13.3M -$2.88M -80,027 -18%
Morgan Stanley
19
Morgan Stanley
New York
$12.8M +$6.13M +169,990 +95%
MRCP
20
Maple Rock Capital Partners
Ontario, Canada
$12.2M +$12M +334,000 New
BC
21
Boxer Capital
California
$11M
Charles Schwab
22
Charles Schwab
California
$10.4M +$1.04M +28,788 +11%
Millennium Management
23
Millennium Management
New York
$9.97M +$1.9M +52,784 +24%
PBA
24
Paradigm Biocapital Advisors
New York
$9.8M +$9.66M +267,946 New
Two Sigma Investments
25
Two Sigma Investments
New York
$9.55M -$1.45M -40,163 -13%