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Prothena Corp
PRTA

Overview Fund Activity

162 hedge funds and large institutions have $855M invested in Prothena Corp in 2024 Q3 according to their latest regulatory filings, with 22 funds opening new positions, 51 increasing their positions, 45 reducing their positions, and 20 closing their positions.

Holders
162
Holders Change
+2
Holders Change %
+1.25%
% of All Funds
2.34%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
22
Increased
51
Reduced
45
Closed
20
Calls
$3.01M
Puts
$2.06M
Net Calls
+$950K
Net Calls Change
+$1.23M

Top Buyers

1
SL
1
Siren LLC
Connecticut
$18.4M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$69.9M
3
UBS AM
3
UBS AM
Illinois
$8.81M
4
Federated Hermes
4
Federated Hermes
Pennsylvania
$6.77M
5
PM
5
Prosight Management
Texas
$8.09M

Top Sellers

1
AG
1
Artal Group
Luxembourg
$0
2
Janus Henderson Group
2
Janus Henderson Group
United Kingdom
$301K
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$64M
4
State Street
4
State Street
Massachusetts
$28M
5
SFM
5
Systematic Financial Management
New Jersey
$136K
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$194M 11,584,280 – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$135M 8,066,983 +1,306 +0%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$69.9M 4,178,788 +539,359 +15%
BlackRock
4
BlackRock
New York
$67.4M 4,028,387 +171,308 +4%
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$64M 3,822,434 -414,970 -10%
PAI
6
Palo Alto Investors
California
$29.1M 1,737,964 +71,586 +4%
State Street
7
State Street
Massachusetts
$28M 1,674,909 -257,563 -13%
AC
8
Armistice Capital
New York
$27.6M 1,650,000 +90,000 +6%
Vanguard Group
9
Vanguard Group
Pennsylvania
$21.1M 1,259,101 +87,354 +7%
SL
10
Siren LLC
Connecticut
$18.4M 1,099,840 +1,099,840 New
Geode Capital Management
11
Geode Capital Management
Massachusetts
$16.1M 963,479 -30,799 -3%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$14.3M 854,050 -7,534 -0.9%
Morgan Stanley
13
Morgan Stanley
New York
$12M 719,287 -91,416 -11%
BC
14
Boxer Capital
California
$11.5M 690,000 – –
RSCM
15
Rock Springs Capital Management
Maryland
$10.5M 625,048 – –
UBS AM
16
UBS AM
Illinois
$8.81M 526,748 +483,673 +1,123%
PM
17
Prosight Management
Texas
$8.09M 483,467 +196,541 +68%
FC
18
Finepoint Capital
Massachusetts
$7.25M 433,471 – –
Goldman Sachs
19
Goldman Sachs
New York
$6.95M 415,289 +65,159 +19%
Federated Hermes
20
Federated Hermes
Pennsylvania
$6.77M 404,903 +361,042 +823%
Northern Trust
21
Northern Trust
Illinois
$6.23M 372,655 +8,549 +2%
Charles Schwab
22
Charles Schwab
California
$5.44M 324,962 -2,177 -0.7%
Mariner
23
Mariner
Kansas
$5.41M 323,213 +125,178 +63%
GIM
24
Granahan Investment Management
Massachusetts
$5.23M 312,520 -23,140 -7%
PA
25
Pinnacle Associates
New York
$4.57M 125,747 +2,847 +2%
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