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 34.1 Million shares, which have been reported (via 13F filing form) to have a value of $257 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
|
$29.1 Million
0.0% of portfolio
|
Q2 2024
Added 3.72%
|
|
|
Adar1 Capital Management, LLC
Austin, TX |
Aug 14, 2025 Q2 2025 |
3,375,009
shares
|
$25.4 Million
3.14% of portfolio
|
Q2 2025
New holding
|
|
|
Armistice Capital, LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
2,236,000
shares
|
$16.9 Million
0.24% of portfolio
|
Q2 2025
Added 1.82%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
2,176,227
shares
|
$16.4 Million
0.0% of portfolio
|
Q2 2025
Added 71.45%
|
|
|
Palo Alto Investors LP
Palo Alto, CA |
Aug 14, 2025 Q2 2025 |
1,274,753
shares
|
$9.61 Million
1.75% of portfolio
|
Q2 2025
Reduced 23.2%
|
|
|
Federated Hermes, Inc.
Pittsburgh, PA |
Aug 13, 2025 Q2 2025 |
1,181,087
shares
|
$8.91 Million
0.01% of portfolio
|
Q2 2025
Added 116.22%
|
|
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
Aug 14, 2025 Q2 2025 |
1,147,622
shares
|
$8.65 Million
0.0% of portfolio
|
Q2 2025
Added 1183.71%
|
|
|
Acadian Asset Management LLC
Boston, MA |
Aug 07, 2025 Q2 2025 |
1,018,177
shares
|
$7.68 Million
0.01% of portfolio
|
Q2 2025
New holding
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
1,005,002
shares
|
$7.58 Million
0.0% of portfolio
|
Q2 2025
Reduced 33.94%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Aug 12, 2025 Q2 2025 |
962,339
shares
|
$7.26 Million
0.0% of portfolio
|
Q2 2025
Added 11.49%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
953,256
shares
|
$7.19 Million
0.0% of portfolio
|
Q2 2025
Added 32.4%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
933,446
shares
|
$7.04 Million
0.0% of portfolio
|
Q2 2025
Reduced 8.02%
|
|
|
Rangeley Capital, LLC
New Canaan, CT |
Aug 14, 2025 Q2 2025 |
715,367
shares
|
$5.39 Million
5.18% of portfolio
|
Q2 2025
New holding
|
|
|
Jacobs Levy Equity Management, Inc
Florham Park, NJ |
Aug 14, 2025 Q2 2025 |
693,154
shares
|
$5.23 Million
0.02% of portfolio
|
Q2 2025
Added 3636.08%
|
|
|
Balyasny Asset Management LLC
Chicago, IL |
Aug 14, 2025 Q2 2025 |
575,792
shares
|
$4.34 Million
0.01% of portfolio
|
Q2 2025
New holding
|
|
|
Trexquant Investment LP
Stamford, CT |
Aug 12, 2025 Q2 2025 |
552,826
shares
|
$4.17 Million
0.04% of portfolio
|
Q2 2025
New holding
|
|
|
Goldman Sachs Group Inc
New York, NY |
Aug 14, 2025 Q2 2025 |
528,323
shares
|
$3.98 Million
0.0% of portfolio
|
Q2 2025
Added 3.5%
|
|
|
Cubist Systematic Strategies, LLC
Stamford, CT |
Aug 14, 2025 Q2 2025 |
501,764
shares
|
$3.78 Million
0.01% of portfolio
|
Q2 2025
New holding
|
|
|
Rock Springs Capital Management LP
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
492,601
shares
|
$3.71 Million
0.2% of portfolio
|
Q1 2025
Reduced 23.58%
|
|
|
Granahan Investment Management, LLC
Waltham, MA |
Aug 14, 2025 Q2 2025 |
461,082
shares
|
$3.48 Million
0.13% of portfolio
|
Q2 2025
New holding
|
|
|
Birchview Capital, LP
Burlington, VT |
Aug 14, 2025 Q2 2025 |
451,019
shares
|
$3.4 Million
2.88% of portfolio
|
Q2 2025
Added 35.45%
|
|
|
Qube Research & Technologies LTD
London, X0 |
Aug 14, 2025 Q2 2025 |
414,828
shares
|
$3.13 Million
0.0% of portfolio
|
Q2 2025
New holding
|
|
|
D. E. Shaw & Co., Inc.
New York, NY |
Aug 14, 2025 Q2 2025 |
391,495
shares
|
$2.95 Million
0.0% of portfolio
|
Q2 2025
Added 2099.04%
|
|
|
Mariner, LLC
Overland Park, KS |
Aug 14, 2025 Q2 2025 |
386,708
shares
|
$2.92 Million
0.0% of portfolio
|
Q2 2025
Added 9.04%
|
|
|
Jpmorgan Chase & CO
New York, NY |
May 12, 2025 Q1 2025 |
371,965
shares
|
$2.8 Million
0.0% of portfolio
|
Q1 2025
Reduced 3.97%
|