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 5 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 |
|---|---|---|---|---|---|
| AXA S.A. | 18,952 | $918.6K | 0.00% | −900−4.5% | Reduced |
| American International Group, Inc. | 18,885 | $915.4K | 0.01% | +1,541+8.9% | Added |
| Prudential Financial Inc | 17,961 | $870.6K | 0.00% | −986−5.2% | Reduced |
| Guggenheim Capital LLC | 17,390 | $842.9K | 0.01% | +17,390 | New |
| HighVista Strategies LLC | 14,572 | $706.3K | 0.58% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 14,421 | $699.0K | 0.03% | +10,286+248.8% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $659.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 12,500 | $605.0K | 0.00% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 12,012 | $582.2K | 0.00% | −12,168−50.3% | Reduced |
| Rockefeller Capital Management L.P. | 11,999 | $581.0K | 0.00% | +11,900+12,020.2% | Added |
| State Board of Administration of Florida Retirement System | 11,286 | $547.0K | 0.00% | 00.0% | Unchanged |
| Harvest Investment Services, LLC | 10,821 | $524.5K | 0.41% | +10,821 | New |
| Teacher Retirement System of Texas | 10,432 | $506.0K | 0.00% | +694+7.1% | Added |
| Capula Management Ltd | 10,420 | $505.1K | 0.04% | +10,420 | New |
| Arizona State Retirement System | 9,812 | $475.6K | 0.00% | +544+5.9% | Added |
| Royal Bank of Canada | 9,743 | $472.0K | 0.00% | −2,754−22.0% | Reduced |
| Dynamic Technology Lab Private Ltd | 9,430 | $457.0K | 0.04% | +9,430 | New |
| ProShare Advisors LLC | 8,250 | $399.9K | 0.00% | −469−5.4% | Reduced |
| Qube Research & Technologies Ltd | 8,238 | $399.3K | 0.00% | +1,038+14.4% | Added |
| E Fund Management Co., Ltd. | 8,049 | $390.0K | 0.03% | +806+11.1% | Added |
| US Bancorp | 7,910 | $383.4K | 0.00% | −208−2.6% | Reduced |
| HighMark Wealth Management LLC | 7,352 | $356.4K | 0.28% | −175−2.3% | Reduced |
| AQR Capital Management LLC | 7,291 | $353.4K | 0.00% | +7,291 | New |
| Oppenheimer & Co Inc | 7,270 | $352.4K | 0.01% | +7,270 | New |
| Advisory Research Inc | 7,151 | $346.6K | 0.06% | +31+0.4% | Added |
| Aquatic Capital Management LLC | 7,000 | $339.0K | 0.02% | −2,900−29.3% | Reduced |
| Walleye Trading LLC | 6,988 | $338.7K | 0.01% | +6,988 | New |
| Public Employees Retirement Association of Colorado | 6,552 | $318.0K | 0.00% | 00.0% | Unchanged |
| Aigen Investment Management, LP | 6,503 | $315.2K | 0.04% | +6,503 | New |
| HRT Financial LP | 6,485 | $314.0K | 0.00% | +6,485 | New |
| Raymond James & Associates | 6,217 | $301.3K | 0.00% | +1,212+24.2% | Added |
| Snowden Capital Advisors LLC | 6,073 | $294.4K | 0.01% | −25−0.4% | Reduced |
| SEI Investments Co | 6,011 | $291.4K | 0.00% | +6,011 | New |
| Bayesian Capital Management, LP | 5,917 | $286.8K | 0.04% | +5,917 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,805 | $281.4K | 0.00% | +419+7.8% | Added |
| NinePointTwo Capital | 5,738 | $278.0K | 0.10% | +5,738 | New |
| D. E. Shaw & Co., Inc. | 5,705 | $276.5K | 0.00% | −21,151−78.8% | Reduced |
| Amalgamated Bank | 5,414 | $262.0K | 0.00% | −712−11.6% | Reduced |
| Glenmede Trust Co NA | 5,069 | $245.7K | 0.00% | −323−6.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 5,026 | $243.6K | 0.00% | −1,958−28.0% | Reduced |
| Brighton Jones LLC | 5,012 | $242.9K | 0.01% | +6+0.1% | Added |
| Allianz Asset Management GmbH | 5,000 | $242.3K | 0.00% | +5,000 | New |
| Occudo Quantitative Strategies LP | 4,796 | $232.5K | 0.02% | −8,169−63.0% | Reduced |
| Captrust Financial Advisors | 4,550 | $220.5K | 0.00% | +574+14.4% | Added |
| Corton Capital Inc. | 4,402 | $213.4K | 0.15% | +4,402 | New |
| Ameritas Investment Partners, Inc. | 3,142 | $152.3K | 0.01% | +208+7.1% | Added |
| Amundi | 2,781 | $134.2K | 0.00% | 00.0% | Unchanged |
| Artal Group S.A. | 2,746 | $133.0K | 0.01% | +2,746 | New |
| Kapitalo Investimentos Ltda | 2,623 | $127.1K | 0.04% | +1,323+101.8% | Added |
| Values First Advisors, Inc. | 2,274 | $110.2K | 0.07% | +2,274 | New |
| Tower Research Capital LLC (TRC) | 1,803 | $88.0K | 0.00% | +257+16.6% | Added |
| Virtus ETF Advisers LLC | 1,743 | $84.5K | 0.05% | −673−27.9% | Reduced |
| Lazard Asset Management LLC | 1,228 | $59.0K | 0.00% | +1,228 | New |
| Federated Hermes, Inc. | 1,006 | $48.8K | 0.00% | −36−3.5% | Reduced |
| Nisa Investment Advisors, LLC | 970 | $47.0K | 0.00% | +445+84.8% | Added |
| Advisor Group Holdings, Inc. | 820 | $39.7K | 0.00% | −531−39.3% | Reduced |
| Point72 Middle East FZE | 755 | $36.6K | 0.00% | −36−4.6% | Reduced |
| China Universal Asset Management Co., Ltd. | 712 | $34.5K | 0.01% | +221+45.0% | Added |
| Cutler Group LP | 500 | $24.0K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 416 | $20.2K | 0.00% | 00.0% | Unchanged |
| First Manhattan Co | 374 | $18.1K | 0.00% | −3−0.8% | Reduced |
| Byrne Asset Management LLC | 320 | $16.0K | 0.01% | +113+54.6% | Added |
| Signaturefd, LLC | 295 | $14.3K | 0.00% | −45−13.2% | Reduced |
| TCI Wealth Advisors, Inc. | 227 | $11.0K | 0.00% | −36−13.7% | Reduced |
| Daiwa Securities Group Inc. | 195 | $9.00K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $9.00K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $8.82K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $7.51K | 0.00% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 129 | $6.25K | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $6.06K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $5.24K | 0.00% | +108 | New |
| Harbor Investment Advisory, LLC | 100 | $4.85K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $4.85K | 0.00% | 00.0% | Unchanged |
| Belpointe Asset Management LLC | 54 | $2.62K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 36 | $2.00K | 0.00% | −54−60.0% | Reduced |
| Allworth Financial LP | 23 | $1.11K | 0.00% | −45−66.2% | Reduced |
| Quadrant Capital Group LLC | 19 | $921 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 18 | $872 | 0.00% | 00.0% | Unchanged |
| Lindbrook Capital, LLC | 16 | $776 | 0.00% | −26−61.9% | Reduced |
| Schubert & Co | 14 | $679 | 0.00% | +1+7.7% | Added |
| Blue Bell Private Wealth Management, LLC | 12 | $582 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 10 | $485 | 0.00% | 00.0% | Unchanged |
| Plante Moran Financial Advisors, LLC | 9 | $436 | 0.00% | +9 | New |
| Advisory Services Network, LLC | 8 | $388 | 0.00% | +8 | New |
| JFS Wealth Advisors, LLC | 6 | $291 | 0.00% | −1−14.3% | Reduced |
| Harbour Investments, Inc. | 5 | $242 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 4 | $194 | 0.00% | −69−94.5% | Reduced |
| Whittier Trust Co of Nevada Inc | 3 | $145 | 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 |
| Steward Financial Group LLC | 7 | $0 | 0.00% | +4+133.3% | Added |
| Covestor Ltd | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Suvretta Capital Management, LLC | 0 | $0 | 0.00% | −206,448−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −123,623−100.0% | Sold out |
| Paradigm Biocapital Advisors LP | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Silverarc Capital Management, LLC | 0 | $0 | 0.00% | −71,706−100.0% | Sold out |
| Pura Vida Investments, LLC | 0 | $0 | 0.00% | −64,000−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −29,772−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −28,128−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −19,203−100.0% | Sold out |