Prothena Corp Public Ltd Co
PRTA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001559053
In the last 90 days, Prothena Corp Public Ltd Co insiders filed 4 open-market purchases and 2 sales; 187 institutions reported holding it in 13F filings for Q2 2026, worth $462.7M in total; no superinvestor holds it.
13F holders, Q1 2022
Institutional positions in Prothena Corp Public Ltd Co as of Mar 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 174
- −19 vs. Q4 2021
- Shares held
- 44.1M
- +1.28M (+3.0%) vs. Q4 2021
- Total value
- $1.61B
- −$502.5M (−23.7%) vs. Q4 2021
- New holders
- 18
- 56 more added
- Sold out
- 37
- 54 more reduced
3 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PRTA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 187 | $462.7M |
| Q1 2026 | 186 | $459.5M |
| Q4 2025 | 182 | $451.6M |
| Q3 2025 | 187 | $415.8M |
| Q2 2025 | 189 | $253.6M |
| Q1 2025 | 161 | $647.2M |
| Q4 2024 | 171 | $741.3M |
| Q3 2024 | 164 | $855.8M |
| Q2 2024 | 160 | $1.05B |
| Q1 2024 | 169 | $1.33B |
| Q4 2023 | 187 | $1.95B |
| Q3 2023 | 187 | $2.56B |
| Q2 2023 | 196 | $3.54B |
| Q1 2023 | 192 | $2.51B |
| Q4 2022 | 201 | $2.98B |
| Q3 2022 | 183 | $2.69B |
| Q2 2022 | 167 | $1.21B |
| Q1 2022 | 174 | $1.61B |
| Q4 2021 | 196 | $2.12B |
| Q3 2021 | 192 | $2.92B |
| Q2 2021 | 156 | $2.08B |
| Q1 2021 | 146 | $1.00B |
Institutions, Q1 2022
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Blue Bell Private Wealth Management, LLC | 12 | $0 | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 26 | $0 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Covington Capital Management | 7 | $0 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 1 | $0 | 0.00% | 00.0% | Unchanged |
| Patriot Financial Group Insurance Agency, LLC | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Investors Research Corp | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Coastal Capital Group, Inc. | 2 | $0 | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 2 | $0 | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 3 | $0 | 0.00% | +3 | New |
| Disciplined Investments, LLC | 2 | $0 | 0.00% | +2 | New |
| Cordant, Inc. | 4 | $0 | 0.00% | +4 | New |
| Schubert & Co | 3 | $0 | 0.00% | +3 | New |
| American Portfolios Advisors | 2 | $73 | 0.00% | 00.0% | Unchanged |
| Centerpoint Advisors, LLC | 36 | $1.00K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 23 | $1.00K | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Ltd | 16 | $1.00K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 63 | $2.00K | 0.00% | 00.0% | Unchanged |
| C M Bidwell & Associates Ltd | 50 | $2.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 42 | $2.00K | 0.00% | +10+31.3% | Added |
| Lloyd Advisory Services, LLC. | 48 | $2.00K | 0.00% | +48 | New |
| Huntington National Bank | 73 | $3.00K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 85 | $3.00K | 0.00% | 00.0% | Unchanged |
| Rockbridge Investment Management, LCC | 100 | $3.91K | 0.00% | 00.0% | Unchanged |
| Hall Laurie J Trustee | 110 | $4.00K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $4.00K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $4.00K | 0.00% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 129 | $5.00K | 0.00% | −2,263−94.6% | Reduced |
| TCI Wealth Advisors, Inc. | 138 | $5.00K | 0.00% | −22−13.8% | Reduced |
| Albion Financial Group | 125 | $5.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 154 | $6.00K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $6.00K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $6.66K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $7.00K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 416 | $15.0K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 420 | $15.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 500 | $18.0K | 0.00% | −2,979−85.6% | Reduced |
| Parallel Advisors, LLC | 998 | $36.0K | 0.00% | +3+0.3% | Added |
| Group One Trading, L.P. | 1,029 | $38.0K | 0.00% | −3,159−75.4% | Reduced |
| US Bancorp | 1,160 | $42.0K | 0.00% | −130−10.1% | Reduced |
| HighMark Wealth Management LLC | 1,175 | $43.0K | 0.03% | +100+9.3% | Added |
| Captrust Financial Advisors | 1,320 | $48.0K | 0.00% | −111−7.8% | Reduced |
| Macquarie Group Ltd | 1,548 | $57.0K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 1,733 | $63.0K | 0.00% | +657+61.1% | Added |
| Brewin Dolphin Wealth Management Ltd | 2,009 | $73.0K | 0.01% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 2,000 | $73.0K | 0.11% | +1,400+233.3% | Added |
| Metropolitan Life Insurance Co | 2,329 | $85.2K | 0.00% | −6,951−74.9% | Reduced |
| Ameritas Investment Partners, Inc. | 2,702 | $99.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 3,073 | $112.4K | 0.00% | −5,252−63.1% | Reduced |
| Virtus ETF Advisers LLC | 3,686 | $135.0K | 0.06% | −215−5.5% | Reduced |
| Point72 Hong Kong Ltd | 3,863 | $141.0K | 0.01% | +3,863 | New |
| Fieldpoint Private Securities, LLC | 4,000 | $146.0K | 0.03% | +1,000+33.3% | Added |
| Janus Henderson Group PLC | 5,495 | $201.0K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 5,541 | $203.0K | 0.00% | −370−6.3% | Reduced |
| Amalgamated Financial Corp. | 5,541 | $203.0K | 0.00% | +5,541 | New |
| Qube Research & Technologies Ltd | 5,969 | $218.0K | 0.00% | −13,864−69.9% | Reduced |
| State of Wyoming | 5,947 | $218.0K | 0.11% | +710+13.6% | Added |
| King Wealth | 6,000 | $219.0K | 0.04% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 6,552 | $240.0K | 0.00% | −1,721−20.8% | Reduced |
| Wetherby Asset Management Inc | 6,582 | $241.0K | 0.01% | +6,582 | New |
| Teacher Retirement System of Texas | 6,685 | $244.0K | 0.00% | +685+11.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,006 | $256.0K | 0.00% | −1,220−14.8% | Reduced |
| E Fund Management Co., Ltd. | 7,202 | $263.0K | 0.01% | +7,202 | New |
| HighTower Advisors, LLC | 7,820 | $286.0K | 0.00% | +7,820 | New |
| Barclays PLC | 7,930 | $291.0K | 0.00% | −40,950−83.8% | Reduced |
| Tower Research Capital LLC (TRC) | 8,223 | $301.0K | 0.00% | +4,827+142.1% | Added |
| Cubist Systematic Strategies, LLC | 8,274 | $303.0K | 0.00% | −34,331−80.6% | Reduced |
| AQR Capital Management LLC | 8,363 | $306.0K | 0.00% | −1,554−15.7% | Reduced |
| Arizona State Retirement System | 8,817 | $322.0K | 0.00% | +330+3.9% | Added |
| Franklin Resources Inc | 9,236 | $338.0K | 0.00% | −514−5.3% | Reduced |
| Marshall Wace, LLP | 10,526 | $385.0K | 0.00% | −204,165−95.1% | Reduced |
| Royal Bank of Canada | 10,807 | $395.0K | 0.00% | −4,495−29.4% | Reduced |
| NinePointTwo Capital | 11,474 | $419.0K | 0.11% | +5,302+85.9% | Added |
| ProShare Advisors LLC | 11,609 | $424.0K | 0.00% | −2,847−19.7% | Reduced |
| Putnam Investments LLC | 12,147 | $444.0K | 0.00% | +618+5.4% | Added |
| Victory Capital Management Inc | 15,410 | $449.0K | 0.00% | +7,273+89.4% | Added |
| HighVista Strategies LLC | 12,953 | $474.0K | 0.30% | −15,125−53.9% | Reduced |
| Virginia Retirement Systems Et Al | 13,400 | $490.0K | 0.00% | +5,900+78.7% | Added |
| Massachusetts Financial Services Co | 13,556 | $496.0K | 0.00% | −28,302−67.6% | Reduced |
| DekaBank Deutsche Girozentrale | 14,000 | $511.0K | 0.00% | +1,300+10.2% | Added |
| Voya Investment Management LLC | 14,295 | $523.0K | 0.00% | +666+4.9% | Added |
| Legal & General Group Plc | 14,675 | $537.0K | 0.00% | +227+1.6% | Added |
| AlphaCrest Capital Management LLC | 15,348 | $561.0K | 0.03% | +15,348 | New |
| Hussman Strategic Advisors, Inc. | 15,600 | $570.0K | 0.11% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 16,066 | $588.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 16,400 | $599.0K | 0.00% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 16,595 | $607.0K | 0.00% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 16,800 | $614.0K | 0.00% | −36,000−68.2% | Reduced |
| Algert Global LLC | 16,875 | $617.0K | 0.04% | +16,875 | New |
| American International Group, Inc. | 17,948 | $656.0K | 0.00% | −1,264−6.6% | Reduced |
| Twinbeech Capital LP | 18,374 | $672.0K | 0.03% | +18,374 | New |
| MetLife Investment Management | 19,561 | $715.3K | 0.00% | +6,951+55.1% | Added |
| Engineers Gate Manager LP | 21,992 | $804.0K | 0.03% | +21,992 | New |
| Deutsche Bank AG | 22,344 | $817.0K | 0.00% | −2,280−9.3% | Reduced |
| Jennison Associates LLC | 24,045 | $879.0K | 0.00% | +5,414+29.1% | Added |
| Edgewood Management LLC | 25,000 | $914.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 25,585 | $937.0K | 0.00% | −74,703−74.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 25,799 | $943.0K | 0.00% | −71,533−73.5% | Reduced |
| Gotham Asset Management, LLC | 25,784 | $943.0K | 0.03% | −8,874−25.6% | Reduced |
| Wells Fargo & Company | 27,283 | $997.0K | 0.00% | −10,905−28.6% | Reduced |