Prothena Corp Public Ltd Co (PRTA) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

53,829,982Shares Outstanding
8,382,515Shares held by institutions
$86,842,855Value of institutional holdings
79.87%Institutional ownership %
9.08%Shares Changed QoQ
185No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of September 2025 show that 185 institutional investors hold a position in Prothena Corp Public Ltd Co (NASDAQ:PRTA).

185 Institutional Holders

8,382,515 Total Shares Held
Download Data
Owner Name Date Shares Held Change (QoQ) Change (%) Value (USD)
FMR LLC 30 Sep, 2025 7,901,218 0 0.00% $77,115,888.00
BlackRock, Inc. 30 Sep, 2025 3,598,417 -340,981 -8.66% $35,120,550.00
VANGUARD GROUP INC 30 Sep, 2025 2,049,849 -126,378 -5.81% $20,006,526.00
ARMISTICE CAPITAL, LLC 30 Sep, 2025 1,824,000 -412,000 -18.43% $17,802,240.00
Rubric Capital Management LP 30 Sep, 2025 1,540,373 1,540,373 0.00% $15,034,040.00
ADAR1 Capital Management, LLC 30 Sep, 2025 1,469,098 -1,905,911 -56.47% $14,338,396.00
Palo Alto Investors LP 30 Sep, 2025 1,324,028 49,275 3.87% $12,922,513.00
D. E. Shaw & Co., Inc. 30 Sep, 2025 1,315,418 923,923 236.00% $12,838,480.00
ACADIAN ASSET MANAGEMENT LLC 30 Sep, 2025 1,239,242 221,065 21.71% $12,090.00
GEODE CAPITAL MANAGEMENT, LLC 30 Sep, 2025 1,019,483 86,037 9.22% $9,952,225.00
STATE STREET CORP 30 Sep, 2025 901,038 -103,964 -10.34% $8,794,131.00
JANE STREET GROUP, LLC 30 Sep, 2025 879,192 562,539 177.65% $8,580,914.00
JACOBS LEVY EQUITY MANAGEMENT, INC 30 Sep, 2025 876,528 183,374 26.46% $8,554,913.00
DIMENSIONAL FUND ADVISORS LP 30 Sep, 2025 806,988 -155,351 -16.14% $7,876,161.00
MORGAN STANLEY 30 Sep, 2025 799,674 -153,582 -16.11% $7,804,823.00
CITADEL ADVISORS LLC 30 Sep, 2025 767,105 677,706 758.07% $7,486,945.00
JPMORGAN CHASE & CO 30 Sep, 2025 735,765 608,814 479.57% $7,181,066.00
FEDERATED HERMES, INC. 30 Sep, 2025 692,818 -488,269 -41.34% $6,761,904.00
Nuveen, LLC 30 Sep, 2025 668,290 546,135 447.08% $6,522,511.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 30 Sep, 2025 654,294 612,039 1,448.44% $6,385,909.00