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 2023
Institutional positions in Prothena Corp Public Ltd Co as of Mar 31, 2023. 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
- 192
- −4 vs. Q4 2022
- Shares held
- 51.7M
- +2.40M (+4.9%) vs. Q4 2022
- Total value
- $2.51B
- −$459.0M (−15.4%) vs. Q4 2022
- New holders
- 27
- 70 more added
- Sold out
- 31
- 56 more reduced
5 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Steward Financial Group LLC | 7 | $0 | 0.00% | +4+133.3% | Added |
| Covestor Ltd | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Coastal Capital Group, Inc. | 2 | $97 | 0.00% | 00.0% | Unchanged |
| Disciplined Investments, LLC | 2 | $97 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $145 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 4 | $194 | 0.00% | −69−94.5% | Reduced |
| Harbour Investments, Inc. | 5 | $242 | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 6 | $291 | 0.00% | −1−14.3% | Reduced |
| Advisory Services Network, LLC | 8 | $388 | 0.00% | +8 | New |
| Plante Moran Financial Advisors, LLC | 9 | $436 | 0.00% | +9 | New |
| Lowe Wealth Advisors, LLC | 10 | $485 | 0.00% | 00.0% | Unchanged |
| Blue Bell Private Wealth Management, LLC | 12 | $582 | 0.00% | 00.0% | Unchanged |
| Schubert & Co | 14 | $679 | 0.00% | +1+7.7% | Added |
| Lindbrook Capital, LLC | 16 | $776 | 0.00% | −26−61.9% | Reduced |
| Farther Finance Advisors, LLC | 18 | $872 | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 19 | $921 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 23 | $1.11K | 0.00% | −45−66.2% | Reduced |
| CWM, LLC | 36 | $2.00K | 0.00% | −54−60.0% | Reduced |
| Belpointe Asset Management LLC | 54 | $2.62K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $4.85K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $4.85K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $5.24K | 0.00% | +108 | New |
| Albion Financial Group | 125 | $6.06K | 0.00% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 129 | $6.25K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $7.51K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $8.82K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $9.00K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $9.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 227 | $11.0K | 0.00% | −36−13.7% | Reduced |
| Signaturefd, LLC | 295 | $14.3K | 0.00% | −45−13.2% | Reduced |
| Byrne Asset Management LLC | 320 | $16.0K | 0.01% | +113+54.6% | Added |
| First Manhattan Co | 374 | $18.1K | 0.00% | −3−0.8% | Reduced |
| The PNC Financial Services Group, Inc. | 416 | $20.2K | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 500 | $24.0K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 712 | $34.5K | 0.01% | +221+45.0% | Added |
| Point72 Middle East FZE | 755 | $36.6K | 0.00% | −36−4.6% | Reduced |
| Advisor Group Holdings, Inc. | 820 | $39.7K | 0.00% | −531−39.3% | Reduced |
| Nisa Investment Advisors, LLC | 970 | $47.0K | 0.00% | +445+84.8% | Added |
| Federated Hermes, Inc. | 1,006 | $48.8K | 0.00% | −36−3.5% | Reduced |
| Lazard Asset Management LLC | 1,228 | $59.0K | 0.00% | +1,228 | New |
| Virtus ETF Advisers LLC | 1,743 | $84.5K | 0.05% | −673−27.9% | Reduced |
| Tower Research Capital LLC (TRC) | 1,803 | $88.0K | 0.00% | +257+16.6% | Added |
| Values First Advisors, Inc. | 2,274 | $110.2K | 0.07% | +2,274 | New |
| Kapitalo Investimentos Ltda | 2,623 | $127.1K | 0.04% | +1,323+101.8% | Added |
| Artal Group S.A. | 2,746 | $133.0K | 0.01% | +2,746 | New |
| Amundi | 2,781 | $134.2K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,142 | $152.3K | 0.01% | +208+7.1% | Added |
| Corton Capital Inc. | 4,402 | $213.4K | 0.15% | +4,402 | New |
| Captrust Financial Advisors | 4,550 | $220.5K | 0.00% | +574+14.4% | Added |
| Occudo Quantitative Strategies LP | 4,796 | $232.5K | 0.02% | −8,169−63.0% | Reduced |
| Allianz Asset Management GmbH | 5,000 | $242.3K | 0.00% | +5,000 | New |
| Brighton Jones LLC | 5,012 | $242.9K | 0.01% | +6+0.1% | Added |
| Allspring Global Investments Holdings, LLC | 5,026 | $243.6K | 0.00% | −1,958−28.0% | Reduced |
| Glenmede Trust Co NA | 5,069 | $245.7K | 0.00% | −323−6.0% | Reduced |
| Amalgamated Bank | 5,414 | $262.0K | 0.00% | −712−11.6% | Reduced |
| D. E. Shaw & Co., Inc. | 5,705 | $276.5K | 0.00% | −21,151−78.8% | Reduced |
| NinePointTwo Capital | 5,738 | $278.0K | 0.10% | +5,738 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,805 | $281.4K | 0.00% | +419+7.8% | Added |
| Bayesian Capital Management, LP | 5,917 | $286.8K | 0.04% | +5,917 | New |
| SEI Investments Co | 6,011 | $291.4K | 0.00% | +6,011 | New |
| Snowden Capital Advisors LLC | 6,073 | $294.4K | 0.01% | −25−0.4% | Reduced |
| Raymond James & Associates | 6,217 | $301.3K | 0.00% | +1,212+24.2% | Added |
| HRT Financial LP | 6,485 | $314.0K | 0.00% | +6,485 | New |
| Aigen Investment Management, LP | 6,503 | $315.2K | 0.04% | +6,503 | New |
| Public Employees Retirement Association of Colorado | 6,552 | $318.0K | 0.00% | 00.0% | Unchanged |
| Walleye Trading LLC | 6,988 | $338.7K | 0.01% | +6,988 | New |
| Aquatic Capital Management LLC | 7,000 | $339.0K | 0.02% | −2,900−29.3% | Reduced |
| Advisory Research Inc | 7,151 | $346.6K | 0.06% | +31+0.4% | Added |
| Oppenheimer & Co Inc | 7,270 | $352.4K | 0.01% | +7,270 | New |
| AQR Capital Management LLC | 7,291 | $353.4K | 0.00% | +7,291 | New |
| HighMark Wealth Management LLC | 7,352 | $356.4K | 0.28% | −175−2.3% | Reduced |
| US Bancorp | 7,910 | $383.4K | 0.00% | −208−2.6% | Reduced |
| E Fund Management Co., Ltd. | 8,049 | $390.0K | 0.03% | +806+11.1% | Added |
| Qube Research & Technologies Ltd | 8,238 | $399.3K | 0.00% | +1,038+14.4% | Added |
| ProShare Advisors LLC | 8,250 | $399.9K | 0.00% | −469−5.4% | Reduced |
| Dynamic Technology Lab Private Ltd | 9,430 | $457.0K | 0.04% | +9,430 | New |
| Royal Bank of Canada | 9,743 | $472.0K | 0.00% | −2,754−22.0% | Reduced |
| Arizona State Retirement System | 9,812 | $475.6K | 0.00% | +544+5.9% | Added |
| Capula Management Ltd | 10,420 | $505.1K | 0.04% | +10,420 | New |
| Teacher Retirement System of Texas | 10,432 | $506.0K | 0.00% | +694+7.1% | Added |
| Harvest Investment Services, LLC | 10,821 | $524.5K | 0.41% | +10,821 | New |
| State Board of Administration of Florida Retirement System | 11,286 | $547.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 11,999 | $581.0K | 0.00% | +11,900+12,020.2% | Added |
| Ameriprise Financial Inc | 12,012 | $582.2K | 0.00% | −12,168−50.3% | Reduced |
| STRS Ohio | 12,500 | $605.0K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 14,000 | $659.0K | 0.00% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 14,421 | $699.0K | 0.03% | +10,286+248.8% | Added |
| HighVista Strategies LLC | 14,572 | $706.3K | 0.58% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 17,390 | $842.9K | 0.01% | +17,390 | New |
| Prudential Financial Inc | 17,961 | $870.6K | 0.00% | −986−5.2% | Reduced |
| American International Group, Inc. | 18,885 | $915.4K | 0.01% | +1,541+8.9% | Added |
| AXA S.A. | 18,952 | $918.6K | 0.00% | −900−4.5% | Reduced |
| Jane Street Group, LLC | 19,393 | $940.0K | 0.00% | +19,393 | New |
| Victory Capital Management Inc | 19,611 | $950.5K | 0.00% | +10,193+108.2% | Added |
| MetLife Investment Management | 20,550 | $996.1K | 0.01% | +989+5.1% | Added |
| Gsa Capital Partners LLP | 20,861 | $1.01M | 0.10% | +20,861 | New |
| First Trust Advisors LP | 21,108 | $1.02M | 0.00% | −41,288−66.2% | Reduced |
| Fred Alger Management, LLC | 21,319 | $1.03M | 0.01% | +21,319 | New |
| Mirae Asset Global Investments Co., Ltd. | 23,818 | $1.15M | 0.00% | +7,114+42.6% | Added |
| Edgewood Management LLC | 24,060 | $1.17M | 0.00% | 00.0% | Unchanged |