Institutional Ownership Prothena Corp Public LTD CO (PRTA)
This table provides information about the institutional ownership of Prothena Corp Public LTD CO (PRTA). We have compiled data on the 218 institutions that hold shares in the stock, with a total of 35 Million shares, which have been reported (via 13F filing form) to have a value of $359 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
3,857,079
shares
|
$39.5 Million
0.0% of portfolio
|
Q2 2024
Added 3.72%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Nov 07, 2025 Q3 2025 |
2,049,849
shares
|
$21 Million
0.0% of portfolio
|
Q3 2025
Reduced 5.81%
|
|
|
Armistice Capital, LLC
New York, NY |
Nov 14, 2025 Q3 2025 |
1,824,000
shares
|
$18.7 Million
0.27% of portfolio
|
Q3 2025
Reduced 18.43%
|
|
|
Rubric Capital Management LP
New York, NY |
Nov 14, 2025 Q3 2025 |
1,540,373
shares
|
$15.8 Million
0.25% of portfolio
|
Q3 2025
New holding
|
|
|
Adar1 Capital Management, LLC
Austin, TX |
Nov 14, 2025 Q3 2025 |
1,469,098
shares
|
$15.1 Million
1.35% of portfolio
|
Q3 2025
Reduced 56.47%
|
|
|
Palo Alto Investors LP
Palo Alto, CA |
Nov 14, 2025 Q3 2025 |
1,324,028
shares
|
$13.6 Million
2.57% of portfolio
|
Q3 2025
Added 3.87%
|
|
|
D. E. Shaw & Co., Inc.
New York, NY |
Nov 14, 2025 Q3 2025 |
1,315,418
shares
|
$13.5 Million
0.01% of portfolio
|
Q3 2025
Added 236.0%
|
|
|
Acadian Asset Management LLC
Boston, MA |
Nov 13, 2025 Q3 2025 |
1,239,242
shares
|
$12.7 Million
0.02% of portfolio
|
Q3 2025
Added 21.71%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Nov 12, 2025 Q3 2025 |
1,019,483
shares
|
$10.4 Million
0.0% of portfolio
|
Q3 2025
Added 9.22%
|
|
|
State Street Corp
Boston, MA |
Nov 14, 2025 Q3 2025 |
901,038
shares
|
$9.24 Million
0.0% of portfolio
|
Q3 2025
Reduced 10.34%
|
|
|
Jacobs Levy Equity Management, Inc
Florham Park, NJ |
Nov 17, 2025 Q3 2025 |
876,528
shares
|
$8.98 Million
0.04% of portfolio
|
Q3 2025
Added 26.46%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Nov 12, 2025 Q3 2025 |
806,988
shares
|
$8.27 Million
0.0% of portfolio
|
Q3 2025
Reduced 16.14%
|
|
|
Morgan Stanley
New York, NY |
Nov 14, 2025 Q3 2025 |
799,674
shares
|
$8.2 Million
0.0% of portfolio
|
Q3 2025
Reduced 16.11%
|
|
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
Nov 14, 2025 Q3 2025 |
767,105
shares
|
$7.86 Million
0.0% of portfolio
|
Q3 2025
Reduced 33.16%
|
|
|
Jpmorgan Chase & CO
New York, NY |
Nov 26, 2025 Q3 2025 |
735,765
shares
|
$7.54 Million
0.0% of portfolio
|
Q3 2025
Added 97.8%
|
|
|
Federated Hermes, Inc.
Pittsburgh, PA |
Nov 03, 2025 Q3 2025 |
692,818
shares
|
$7.1 Million
0.01% of portfolio
|
Q3 2025
Reduced 41.34%
|
|
|
Nuveen, LLC
Charlotte, NC |
Nov 12, 2025 Q3 2025 |
668,290
shares
|
$6.85 Million
0.0% of portfolio
|
Q3 2025
Added 447.08%
|
|
|
Arrowstreet Capital, Limited Partnership
Boston, MA |
Nov 13, 2025 Q3 2025 |
654,294
shares
|
$6.71 Million
0.0% of portfolio
|
Q3 2025
New holding
|
|
|
Steven Cohen
Point72 Asset Management, L.P. | Stamford, Ct
|
Nov 14, 2025 Q3 2025 |
646,746
shares
|
$6.63 Million
0.01% of portfolio
|
Q3 2025
New holding
|
|
|
Israel Englander
Millennium Management LLC | New York, Ny
|
Nov 14, 2025 Q3 2025 |
621,099
shares
|
$6.37 Million
0.0% of portfolio
|
Q3 2025
Added 264.11%
|
|
|
Jane Street Group, LLC
New York, NY |
Nov 13, 2025 Q3 2025 |
619,792
shares
|
$6.35 Million
0.0% of portfolio
|
Q3 2025
Added 427.69%
|
|
|
Mariner, LLC
Overland Park, KS |
Nov 14, 2025 Q3 2025 |
590,897
shares
|
$6.06 Million
0.01% of portfolio
|
Q3 2025
Added 52.8%
|
|
|
Rangeley Capital, LLC
New Canaan, CT |
Nov 14, 2025 Q3 2025 |
560,457
shares
|
$5.74 Million
4.73% of portfolio
|
Q3 2025
Reduced 21.65%
|
|
|
Birchview Capital, LP
Burlington, VT |
Nov 13, 2025 Q3 2025 |
549,019
shares
|
$5.63 Million
4.32% of portfolio
|
Q3 2025
Added 21.73%
|
|
|
Algert Global LLC
San Francisco, CA |
Nov 14, 2025 Q3 2025 |
445,811
shares
|
$4.57 Million
0.07% of portfolio
|
Q3 2025
Added 825.88%
|
|