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Prothena Corp
PRTA

Overview Fund Activity

169 hedge funds and large institutions have $741M invested in Prothena Corp in 2024 Q4 according to their latest regulatory filings, with 34 funds opening new positions, 63 increasing their positions, 39 reducing their positions, and 27 closing their positions.

Holders
169
Holders Change
+7
Holders Change %
+4.32%
% of All Funds
2.25%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
34
Increased
63
Reduced
39
Closed
27
Calls
$8.78M
Puts
$4.31M
Net Calls
+$4.48M
Net Calls Change
+$3.53M

Top Buyers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$71.1M
2
BCM
2
Boxer Capital Management
California
$9.56M
3
AC
3
Armistice Capital
New York
$31M
4
Federated Hermes
4
Federated Hermes
Pennsylvania
$10.3M
5
UBS Group
5
UBS Group
Switzerland
$5.14M

Top Sellers

1
BC
1
Boxer Capital
California
$0
2
GIM
2
Granahan Investment Management
Massachusetts
$0
3
Citadel Advisors
3
Citadel Advisors
Florida
$575K
4
DTC
4
Deep Track Capital
Connecticut
$0
5
UBS AM
5
UBS AM
Illinois
$5.28M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$160M 11,584,280 – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$112M 8,071,309 +4,326 +0.1%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$71.1M 5,130,876 +952,088 +23%
BlackRock
4
BlackRock
New York
$57.1M 4,122,376 +93,989 +2%
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$51M 3,685,708 -136,726 -4%
AC
6
Armistice Capital
New York
$31M 2,236,000 +586,000 +36%
State Street
7
State Street
Massachusetts
$25.8M 1,861,641 +186,732 +11%
PAI
8
Palo Alto Investors
California
$24.1M 1,737,964 – –
Vanguard Group
9
Vanguard Group
Pennsylvania
$19.4M 1,403,838 +144,737 +11%
SL
10
Siren LLC
Connecticut
$15.2M 1,099,840 – –
Geode Capital Management
11
Geode Capital Management
Massachusetts
$13.4M 964,308 +829 +0.1%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$12M 864,833 +10,783 +1%
Federated Hermes
13
Federated Hermes
Pennsylvania
$10.3M 746,177 +341,274 +84%
Morgan Stanley
14
Morgan Stanley
New York
$9.96M 719,490 +203 +0%
BCM
15
Boxer Capital Management
California
$9.56M 690,000 +690,000 New
FC
16
Finepoint Capital
Massachusetts
$9.1M 657,071 +223,600 +52%
RSCM
17
Rock Springs Capital Management
Maryland
$8.93M 644,601 +19,553 +3%
Goldman Sachs
18
Goldman Sachs
New York
$7.71M 556,526 +141,237 +34%
PM
19
Prosight Management
Texas
$5.79M 418,122 -65,345 -14%
Northern Trust
20
Northern Trust
Illinois
$5.6M 404,496 +31,841 +9%
JPMorgan Chase & Co
21
JPMorgan Chase & Co
New York
$5.36M 387,350 +187,364 +94%
UBS AM
22
UBS AM
Illinois
$5.28M 381,508 -145,240 -28%
UBS Group
23
UBS Group
Switzerland
$5.14M 371,287 +308,781 +494%
Mariner
24
Mariner
Kansas
$4.76M 343,917 +20,704 +6%
Charles Schwab
25
Charles Schwab
California
$4.53M 327,151 +2,189 +0.7%
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