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, Q3 2023
Institutional positions in Prothena Corp Public Ltd Co as of Sep 30, 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
- 187
- −6 vs. Q2 2023
- Shares held
- 53.0M
- +1.07M (+2.1%) vs. Q2 2023
- Total value
- $2.56B
- −$984.1M (−27.8%) vs. Q2 2023
- New holders
- 25
- 73 more added
- Sold out
- 31
- 51 more reduced
3 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Covestor Ltd | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Steward Financial Group LLC | 4 | $0 | 0.00% | +4 | New |
| Gradient Investments LLC | 1 | $48 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $144 | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 4 | $193 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 4 | $193 | 0.00% | 00.0% | Unchanged |
| Register Financial Advisors LLC | 4 | $193 | 0.00% | +4 | New |
| Tfo-TDC, LLC | 3 | $205 | 0.00% | +3 | New |
| Harbour Investments, Inc. | 5 | $241 | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 9 | $434 | 0.00% | −30,847−100.0% | Reduced |
| Lowe Wealth Advisors, LLC | 10 | $483 | 0.00% | 00.0% | Unchanged |
| Blue Bell Private Wealth Management, LLC | 12 | $579 | 0.00% | 00.0% | Unchanged |
| Lindbrook Capital, LLC | 16 | $772 | 0.00% | −6−27.3% | Reduced |
| Quadrant Capital Group LLC | 19 | $917 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 25 | $1.21K | 0.00% | +2+8.7% | Added |
| Farther Finance Advisors, LLC | 26 | $1.25K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 28 | $1.35K | 0.00% | −281−90.9% | Reduced |
| CWM, LLC | 47 | $2.00K | 0.00% | +13+38.2% | Added |
| Gould Capital, LLC | 100 | $4.66K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $4.83K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $5.21K | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $6.03K | 0.00% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 129 | $6.22K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $7.48K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $8.78K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $9.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $9.00K | 0.00% | 00.0% | Unchanged |
| Byrne Asset Management LLC | 280 | $14.0K | 0.01% | +20+7.7% | Added |
| Signaturefd, LLC | 295 | $14.2K | 0.00% | −6−2.0% | Reduced |
| The PNC Financial Services Group, Inc. | 422 | $20.4K | 0.00% | 00.0% | Unchanged |
| KBC Group NV | 930 | $45.0K | 0.00% | +930 | New |
| Virtus ETF Advisers LLC | 1,372 | $66.2K | 0.04% | −141−9.3% | Reduced |
| China Universal Asset Management Co., Ltd. | 1,375 | $66.3K | 0.02% | +684+99.0% | Added |
| Tower Research Capital LLC (TRC) | 1,398 | $67.5K | 0.00% | −1,137−44.9% | Reduced |
| Nisa Investment Advisors, LLC | 1,510 | $72.9K | 0.00% | +20+1.3% | Added |
| Headlands Technologies LLC | 1,531 | $73.9K | 0.04% | +1,531 | New |
| Metropolitan Life Insurance Co | 2,389 | $115.3K | 0.01% | +125+5.5% | Added |
| Jefferies Financial Group Inc. | 3,085 | $148.9K | 0.00% | +2,240+265.1% | Added |
| Allspring Global Investments Holdings, LLC | 3,096 | $149.4K | 0.00% | +1,140+58.3% | Added |
| Ameritas Investment Partners, Inc. | 4,119 | $198.7K | 0.01% | +696+20.3% | Added |
| Schroder Investment Management Group | 4,232 | $200.8K | 0.00% | +234+5.9% | Added |
| US Bancorp | 4,182 | $201.8K | 0.00% | −3,256−43.8% | Reduced |
| Beirne Wealth Consulting Services, LLC | 3,000 | $204.8K | 0.16% | 00.0% | Unchanged |
| Walleye Capital LLC | 4,286 | $206.8K | 0.00% | −51,366−92.3% | Reduced |
| Captrust Financial Advisors | 4,338 | $209.3K | 0.00% | −144−3.2% | Reduced |
| Advisor Group Holdings, Inc. | 4,440 | $214.2K | 0.00% | +1,323+42.4% | Added |
| SEI Investments Co | 4,717 | $227.6K | 0.00% | −2,385−33.6% | Reduced |
| Man Group plc | – | $229.5K | 0.00% | – | – |
| Pictet Asset Management Holding SA | 5,057 | $244.0K | 0.00% | +5,057 | New |
| Occudo Quantitative Strategies LP | 5,223 | $252.0K | 0.03% | +5,223 | New |
| Magnetar Financial LLC | 5,923 | $285.8K | 0.01% | +5,923 | New |
| Snowden Capital Advisors LLC | 6,000 | $289.5K | 0.01% | −73−1.2% | Reduced |
| Jane Street Group, LLC | 6,256 | $301.9K | 0.00% | −47,219−88.3% | Reduced |
| Amalgamated Bank | 6,327 | $305.0K | 0.00% | +138+2.2% | Added |
| Public Employees Retirement Association of Colorado | 6,552 | $316.0K | 0.00% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 6,800 | $328.1K | 0.00% | −9,000−57.0% | Reduced |
| STRS Ohio | 6,900 | $332.0K | 0.00% | −6,100−46.9% | Reduced |
| HighMark Wealth Management LLC | 7,352 | $354.7K | 0.29% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,464 | $360.1K | 0.00% | +797+12.0% | Added |
| Point72 Middle East FZE | 7,716 | $372.3K | 0.02% | −4,072−34.5% | Reduced |
| Oppenheimer & Co Inc | 7,908 | $381.6K | 0.01% | +295+3.9% | Added |
| E Fund Management Co., Ltd. | 8,059 | $389.0K | 0.03% | +1,632+25.4% | Added |
| Capstone Investment Advisors, LLC | 8,135 | $392.5K | 0.01% | +8,135 | New |
| Raymond James & Associates | 8,167 | $394.1K | 0.00% | +4,050+98.4% | Added |
| Royal Bank of Canada | 8,463 | $409.0K | 0.00% | +290+3.5% | Added |
| Victory Capital Management Inc | 8,781 | $423.7K | 0.00% | −17,526−66.6% | Reduced |
| ProShare Advisors LLC | 8,888 | $428.8K | 0.00% | +82+0.9% | Added |
| Corton Capital Inc. | 9,091 | $438.6K | 0.22% | +1,560+20.7% | Added |
| HighVista Strategies LLC | 9,195 | $443.7K | 0.21% | +2,789+43.5% | Added |
| Walleye Trading LLC | 9,267 | $447.1K | 0.01% | +3,910+73.0% | Added |
| Bayesian Capital Management, LP | 9,299 | $448.7K | 0.05% | +9,299 | New |
| Fox Run Management, L.L.C. | 9,617 | $464.0K | 0.14% | +9,617 | New |
| Ameriprise Financial Inc | 11,063 | $533.8K | 0.00% | −853−7.2% | Reduced |
| XTX Topco Ltd | 11,112 | $536.2K | 0.09% | +11,112 | New |
| Teachers Retirement System of the State of Kentucky | 11,144 | $538.0K | 0.01% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 11,231 | $542.0K | 0.00% | +529+4.9% | Added |
| Arizona State Retirement System | 11,265 | $543.5K | 0.00% | +184+1.7% | Added |
| Engineers Gate Manager LP | 11,384 | $549.3K | 0.02% | +7,683+207.6% | Added |
| HRT Financial LP | 11,459 | $552.0K | 0.01% | +11,459 | New |
| State Board of Administration of Florida Retirement System | 11,916 | $574.9K | 0.00% | +150+1.3% | Added |
| Martingale Asset Management L P | 12,415 | $599.0K | 0.01% | +1,097+9.7% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $682.0K | 0.00% | 00.0% | Unchanged |
| International Biotechnology Trust PLC | 15,000 | $722.9K | 0.24% | +15,000 | New |
| Guggenheim Capital LLC | 15,343 | $740.3K | 0.01% | +163+1.1% | Added |
| Aquatic Capital Management LLC | 16,100 | $777.0K | 0.03% | +16,100 | New |
| Twinbeech Capital LP | 18,376 | $886.6K | 0.02% | +18,376 | New |
| AQR Capital Management LLC | 18,509 | $893.1K | 0.00% | −777−4.0% | Reduced |
| Rockefeller Capital Management L.P. | 19,299 | $931.2K | 0.00% | +5,638+41.3% | Added |
| American International Group, Inc. | 20,690 | $998.3K | 0.01% | +736+3.7% | Added |
| MetLife Investment Management | 21,852 | $1.05M | 0.01% | 00.0% | Unchanged |
| Deutsche Bank AG | 22,613 | $1.09M | 0.00% | +2,857+14.5% | Added |
| Moody Aldrich Partners LLC | 23,904 | $1.15M | 0.22% | −13,695−36.4% | Reduced |
| Edgewood Management LLC | 24,060 | $1.16M | 0.00% | 00.0% | Unchanged |
| Principal Financial Group Inc | 25,582 | $1.23M | 0.00% | −48,741−65.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 25,652 | $1.24M | 0.00% | +3,222+14.4% | Added |
| Silverarc Capital Management, LLC | 26,629 | $1.28M | 0.48% | −23,092−46.4% | Reduced |
| Profund Advisors LLC | 26,634 | $1.29M | 0.07% | +4,585+20.8% | Added |
| Algert Global LLC | 28,000 | $1.35M | 0.06% | +28,000 | New |
| Thornburg Investment Management Inc | 28,271 | $1.36M | 0.02% | −740−2.6% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 30,500 | $1.47M | 0.01% | +30,500 | New |