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, Q4 2021
Institutional positions in Prothena Corp Public Ltd Co as of Dec 31, 2021. 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
- 196
- +5 vs. Q3 2021
- Shares held
- 42.8M
- +1.95M (+4.8%) vs. Q3 2021
- Total value
- $2.12B
- −$796.5M (−27.3%) vs. Q3 2021
- New holders
- 41
- 72 more added
- Sold out
- 36
- 37 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Harbour Investments, Inc. | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $0 | 0.00% | 00.0% | Unchanged |
| TD Capital Management LLC | 1 | $0 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 1 | $0 | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 3 | $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 |
| Covington Capital Management | 7 | $0 | 0.00% | +7 | New |
| Reilly Financial Advisors, LLC | 1 | $0 | 0.00% | +1 | New |
| Dark Forest Capital Management LP | 2 | $0 | 0.00% | +2 | New |
| American Portfolios Advisors | 2 | $99 | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Ltd | 16 | $1.00K | 0.00% | −513−97.0% | Reduced |
| Allworth Financial LP | 23 | $1.00K | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 26 | $1.00K | 0.00% | 00.0% | Unchanged |
| Blue Bell Private Wealth Management, LLC | 12 | $1.00K | 0.00% | +12 | New |
| CoreCap Advisors, LLC | 11 | $1.00K | 0.00% | +11 | New |
| C M Bidwell & Associates Ltd | 50 | $2.00K | 0.00% | +50 | New |
| CWM, LLC | 32 | $2.00K | 0.00% | +32 | New |
| Centerpoint Advisors, LLC | 36 | $2.00K | 0.00% | +36 | New |
| Bessemer Group Inc | 63 | $3.00K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 85 | $4.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 73 | $4.00K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 73 | $4.00K | 0.00% | +73 | New |
| Hall Laurie J Trustee | 110 | $5.00K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $5.00K | 0.00% | 00.0% | Unchanged |
| Rockbridge Investment Management, LCC | 100 | $5.00K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $5.00K | 0.00% | +100 | New |
| Albion Financial Group | 125 | $6.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 154 | $8.00K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $8.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 160 | $8.00K | 0.00% | +43+36.8% | Added |
| Kelly Financial Services LLC | 182 | $8.99K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $9.00K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 376 | $18.6K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 370 | $19.0K | 0.00% | −1,068−74.3% | Reduced |
| The PNC Financial Services Group, Inc. | 416 | $21.0K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 420 | $21.0K | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 600 | $30.0K | 0.06% | +600 | New |
| Denali Advisors LLC | 800 | $40.0K | 0.01% | +800 | New |
| Signet Financial Management, LLC | 850 | $42.0K | 0.01% | +850 | New |
| Parallel Advisors, LLC | 995 | $49.0K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 1,075 | $53.0K | 0.03% | −721−40.1% | Reduced |
| Lazard Asset Management LLC | 1,076 | $53.0K | 0.00% | +158+17.2% | Added |
| Spire Wealth Management | 1,070 | $53.0K | 0.00% | +967+938.8% | Added |
| US Bancorp | 1,290 | $64.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 1,431 | $71.0K | 0.00% | −572−28.6% | Reduced |
| Macquarie Group Ltd | 1,548 | $76.0K | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Wealth Management Ltd | 2,009 | $99.0K | 0.01% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 2,392 | $118.0K | 0.02% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 3,479 | $119.0K | 0.00% | +2,449+237.8% | Added |
| Ameritas Investment Partners, Inc. | 2,702 | $133.0K | 0.00% | 00.0% | Unchanged |
| Fieldpoint Private Securities, LLC | 3,000 | $148.0K | 0.03% | +1,000+50.0% | Added |
| Tower Research Capital LLC (TRC) | 3,396 | $168.0K | 0.00% | −1,922−36.1% | Reduced |
| Virtus ETF Advisers LLC | 3,901 | $193.0K | 0.07% | −557−12.5% | Reduced |
| Group One Trading, L.P. | 4,188 | $207.0K | 0.00% | +2,251+116.2% | Added |
| Blueshift Asset Management, LLC | 4,478 | $221.0K | 0.02% | +4,478 | New |
| Oppenheimer & Co Inc | 4,549 | $225.0K | 0.00% | −214−4.5% | Reduced |
| Raymond James & Associates | 4,700 | $232.0K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 5,237 | $259.0K | 0.12% | +502+10.6% | Added |
| Quantbot Technologies LP | 5,338 | $263.0K | 0.02% | +4,738+789.7% | Added |
| Janus Henderson Group PLC | 5,495 | $272.0K | 0.00% | +5,495 | New |
| Delphia (USA) Inc. | 5,597 | $276.0K | 0.29% | +5,597 | New |
| Dynamic Technology Lab Private Ltd | 5,870 | $290.0K | 0.03% | +5,870 | New |
| Trexquant Investment LP | 5,866 | $290.0K | 0.02% | +5,866 | New |
| Amalgamated Bank | 5,911 | $292.0K | 0.00% | +76+1.3% | Added |
| King Wealth | 6,000 | $296.0K | 0.05% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 6,000 | $296.0K | 0.00% | +1,191+24.8% | Added |
| NinePointTwo Capital | 6,172 | $304.0K | 0.10% | +6,172 | New |
| Squarepoint Ops LLC | 6,606 | $326.0K | 0.00% | +6,606 | New |
| Virginia Retirement Systems Et Al | 7,500 | $371.0K | 0.00% | −3,400−31.2% | Reduced |
| Navellier & Associates Inc | 7,553 | $373.0K | 0.05% | +373+5.2% | Added |
| Acadian Asset Management LLC | 7,961 | $393.0K | 0.00% | +6,531+456.7% | Added |
| Victory Capital Management Inc | 8,137 | $402.0K | 0.00% | +4,224+107.9% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,226 | $406.0K | 0.00% | +3,415+71.0% | Added |
| Public Employees Retirement Association of Colorado | 8,273 | $409.0K | 0.00% | −2,711−24.7% | Reduced |
| BNP Paribas Arbitrage, SA | 8,325 | $411.3K | 0.00% | +1,571+23.3% | Added |
| Arizona State Retirement System | 8,487 | $419.0K | 0.00% | +64+0.8% | Added |
| Ergoteles LLC | 8,800 | $435.0K | 0.02% | +8,800 | New |
| Jane Street Group, LLC | 9,168 | $453.0K | 0.00% | −3,781−29.2% | Reduced |
| Metropolitan Life Insurance Co | 9,280 | $458.4K | 0.01% | 00.0% | Unchanged |
| Franklin Resources Inc | 9,750 | $482.0K | 0.00% | +115+1.2% | Added |
| AQR Capital Management LLC | 9,917 | $490.0K | 0.00% | −3,429−25.7% | Reduced |
| Schonfeld Strategic Advisors LLC | 10,387 | $513.0K | 0.00% | +6,622+175.9% | Added |
| Advisory Research Inc | 10,975 | $542.0K | 0.04% | −8,709−44.2% | Reduced |
| Putnam Investments LLC | 11,529 | $570.0K | 0.00% | +11,529 | New |
| DekaBank Deutsche Girozentrale | 12,700 | $582.0K | 0.00% | +350+2.8% | Added |
| MetLife Investment Management | 12,610 | $622.9K | 0.01% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 13,259 | $655.0K | 0.08% | +9,648+267.2% | Added |
| Voya Investment Management LLC | 13,629 | $673.0K | 0.00% | −138−1.0% | Reduced |
| Mariner, LLC | 13,986 | $691.0K | 0.00% | +13,986 | New |
| Harvest Investment Services, LLC | 14,141 | $698.0K | 0.29% | +6,913+95.6% | Added |
| Boulder Hill Capital Management LP | 14,300 | $706.0K | 0.68% | +14,300 | New |
| Corton Capital Inc. | 14,352 | $709.0K | 0.31% | +14,352 | New |
| Ameriprise Financial Inc | 14,420 | $712.0K | 0.00% | +5,297+58.1% | Added |
| Legal & General Group Plc | 14,448 | $713.0K | 0.00% | +366+2.6% | Added |
| ProShare Advisors LLC | 14,456 | $715.0K | 0.00% | +355+2.5% | Added |
| International Biotechnology Trust PLC | 15,000 | $741.0K | 0.17% | +15,000 | New |
| Royal Bank of Canada | 15,302 | $756.0K | 0.00% | +2,280+17.5% | Added |