Prothena Corp
PRTA
PRTA
159 hedge funds and large institutions have $647M invested in Prothena Corp in 2025 Q1 according to their latest regulatory filings, with 17 funds opening new positions, 42 increasing their positions, 58 reducing their positions, and 25 closing their positions.
New
Increased
Maintained
Reduced
Closed
Holders
159
Holders Change
-10
Holders Change %
-5.92%
% of All Funds
2.16%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
17
Increased
42
Reduced
58
Closed
25
Calls
$3.5M
Puts
$1.25M
Net Calls
+$2.25M
Net Calls Change
-$2.23M
Top Buyers
| 1 |
Nordea Investment Management
Stockholm,
Sweden
|
+$3.74M |
| 2 |
SL
Siren LLC
Greenwich,
Connecticut
|
+$2.27M |
| 3 |
DA
DCF Advisers
Greenwich,
Connecticut
|
+$1.13M |
| 4 |
Jane Street
New York
|
+$954K |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
+$850K |
Top Sellers
| 1 |
State Street
Boston,
Massachusetts
|
-$4.21M |
| 2 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$2.84M |
| 3 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
-$2.47M |
| 4 |
RSCM
Rock Springs Capital Management
Baltimore,
Maryland
|
-$1.88M |
| 5 |
Axa
Paris,
France
|
-$1.67M |
