Q2 2025 13F Holders as of 6/30/2025
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Type / Class
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Equity / Ordinary Shares, par value $0.01 per share
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Shares outstanding
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54.4M
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Number of holders
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189
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Total 13F shares, excl. options
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41.8M
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Shares change
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-10.5M
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Total reported value, excl. options
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$254M
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Value change
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-$154M
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Put/Call ratio
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0.9
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Number of buys
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106
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Number of sells
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-63
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Price
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$6.07
Significant Holders of PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share (PRTA) as of Q2 2025
225 filings reported holding PRTA - PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share as of Q2 2025.
PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share (PRTA) has 189 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 41.8M shares
of 54.4M outstanding shares and own 76.78% of the company stock.
Largest 10 shareholders include FMR LLC (7.9M shares), BlackRock, Inc. (3.94M shares), ADAR1 Capital Management, LLC (3.38M shares), ARMISTICE CAPITAL, LLC (2.24M shares), VANGUARD GROUP INC (2.18M shares), Palo Alto Investors LP (1.27M shares), FEDERATED HERMES, INC. (1.18M shares), CITADEL ADVISORS LLC (1.15M shares), ACADIAN ASSET MANAGEMENT LLC (1.02M shares), and STATE STREET CORP (1.01M shares).
This table shows the top 189 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
| Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.