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Prothena Corp
PRTA

Overview Fund Activity

168 hedge funds and large institutions have $1.33B invested in Prothena Corp in 2024 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 57 increasing their positions, 62 reducing their positions, and 41 closing their positions.

Holders
168
Holders Change
-19
Holders Change %
-10.16%
% of All Funds
2.44%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
24
Increased
57
Reduced
62
Closed
41
Calls
$4.77M
Puts
$4.78M
Net Calls
-$6K
Net Calls Change
-$19.3M

Top Buyers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$92.9M
2
AC
2
Armistice Capital
New York
$27.1M
3
State Street
3
State Street
Massachusetts
$86.1M
4
AG
4
Artal Group
Luxembourg
$24.8M
5
Millennium Management
5
Millennium Management
New York
$7.98M

Top Sellers

1
Janus Henderson Group
1
Janus Henderson Group
United Kingdom
$32.4M
2
EAM
2
Eventide Asset Management
Massachusetts
$0
3
FLAM
3
First Light Asset Management
Minnesota
$11M
4
MRCP
4
Maple Rock Capital Partners
Ontario, Canada
$0
5
Morgan Stanley
5
Morgan Stanley
New York
$16.2M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$287M 11,584,280 – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$198M 8,006,411 -43,385 -0.5%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$104M 4,201,771 -35,580 -0.8%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$92.9M 3,752,147 +1,158,045 +45%
BlackRock
5
BlackRock
New York
$92.1M 3,718,813 -51,837 -1%
State Street
6
State Street
Massachusetts
$86.1M 3,473,996 +715,432 +26%
PAI
7
Palo Alto Investors
California
$41.2M 1,663,448 +3,391 +0.2%
Janus Henderson Group
8
Janus Henderson Group
United Kingdom
$32.4M 1,309,590 -726,394 -36%
Vanguard Group
9
Vanguard Group
Pennsylvania
$27.9M 1,125,283 +54,728 +5%
AC
10
Armistice Capital
New York
$27.1M 1,096,000 +818,000 +294%
AG
11
Artal Group
Luxembourg
$24.8M 1,001,360 +500,000 +100%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$22.9M 924,580 +19,455 +2%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$21.4M 862,832 -4,803 -0.6%
BC
14
Boxer Capital
California
$17.1M 690,000 +25,000 +4%
Morgan Stanley
15
Morgan Stanley
New York
$16.2M 652,468 -312,052 -32%
RSCM
16
Rock Springs Capital Management
Maryland
$15.5M 625,048 – –
FLAM
17
First Light Asset Management
Minnesota
$11M 444,953 -643,848 -59%
FC
18
Finepoint Capital
Massachusetts
$9.97M 402,400 +53,100 +15%
Northern Trust
19
Northern Trust
Illinois
$9.84M 397,263 -6,847 -2%
Renaissance Technologies
20
Renaissance Technologies
New York
$9.65M 389,700 +53,900 +16%
UBS AM
21
UBS AM
Illinois
$9.29M 375,165 +83,298 +29%
GIM
22
Granahan Investment Management
Massachusetts
$8.27M 333,920 -83,237 -20%
Millennium Management
23
Millennium Management
New York
$7.98M 322,241 +284,585 +756%
Charles Schwab
24
Charles Schwab
California
$7.9M 318,905 +5,675 +2%
Goldman Sachs
25
Goldman Sachs
New York
$7.65M 308,887 -24,899 -7%
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