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Prothena Corp
PRTA

Overview Fund Activity

160 hedge funds and large institutions have $1.05B invested in Prothena Corp in 2024 Q2 according to their latest regulatory filings, with 27 funds opening new positions, 58 increasing their positions, 42 reducing their positions, and 33 closing their positions.

Holders
160
Holders Change
-8
Holders Change %
-4.76%
% of All Funds
2.33%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
27
Increased
58
Reduced
42
Closed
33
Calls
$2.03M
Puts
$2.31M
Net Calls
-$277K
Net Calls Change
-$271K

Top Buyers

1
AC
1
Armistice Capital
New York
$32.2M
2
Morgan Stanley
2
Morgan Stanley
New York
$16.7M
3
BlackRock
3
BlackRock
New York
$79.6M
4
Citadel Advisors
4
Citadel Advisors
Florida
$7.29M
5
PM
5
Prosight Management
Texas
$5.92M

Top Sellers

1
State Street
1
State Street
Massachusetts
$39.9M
2
FLAM
2
First Light Asset Management
Minnesota
$0
3
UBS AM
3
UBS AM
Illinois
$889K
4
Millennium Management
4
Millennium Management
New York
$646K
5
Janus Henderson Group
5
Janus Henderson Group
United Kingdom
$21.2M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$239M 11,584,280 – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$166M 8,065,677 +59,266 +0.7%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$87.5M 4,237,404 +35,633 +0.8%
BlackRock
4
BlackRock
New York
$79.6M 3,857,079 +138,266 +4%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$75.1M 3,639,429 -112,718 -3%
State Street
6
State Street
Massachusetts
$39.9M 1,932,472 -1,541,524 -44%
PAI
7
Palo Alto Investors
California
$34.4M 1,666,378 +2,930 +0.2%
AC
8
Armistice Capital
New York
$32.2M 1,560,000 +464,000 +42%
Vanguard Group
9
Vanguard Group
Pennsylvania
$24.2M 1,171,747 +46,464 +4%
Janus Henderson Group
10
Janus Henderson Group
United Kingdom
$21.2M 1,026,558 -283,032 -22%
AG
11
Artal Group
Luxembourg
$20.7M 1,001,360 – –
Geode Capital Management
12
Geode Capital Management
Massachusetts
$20.5M 994,278 +69,698 +8%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$17.8M 861,584 -1,248 -0.1%
Morgan Stanley
14
Morgan Stanley
New York
$16.7M 810,703 +158,235 +24%
BC
15
Boxer Capital
California
$14.2M 690,000 – –
RSCM
16
Rock Springs Capital Management
Maryland
$12.9M 625,048 – –
FC
17
Finepoint Capital
Massachusetts
$8.95M 433,471 +31,071 +8%
Northern Trust
18
Northern Trust
Illinois
$7.52M 364,106 -33,157 -8%
Citadel Advisors
19
Citadel Advisors
Florida
$7.29M 353,153 +118,227 +50%
Goldman Sachs
20
Goldman Sachs
New York
$7.23M 350,130 +41,243 +13%
GIM
21
Granahan Investment Management
Massachusetts
$6.93M 335,660 +1,740 +0.5%
Renaissance Technologies
22
Renaissance Technologies
New York
$6.8M 329,500 -60,200 -15%
Charles Schwab
23
Charles Schwab
California
$6.75M 327,139 +8,234 +3%
JPMorgan Chase & Co
24
JPMorgan Chase & Co
New York
$6.11M 295,965 -2,126 -0.7%
PM
25
Prosight Management
Texas
$5.92M 286,926 +116,457 +68%
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