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 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 |
|---|---|---|---|---|---|
| Royal Bank of Canada | 10,807 | $395.0K | 0.00% | −4,495−29.4% | Reduced |
| Marshall Wace, LLP | 10,526 | $385.0K | 0.00% | −204,165−95.1% | Reduced |
| Franklin Resources Inc | 9,236 | $338.0K | 0.00% | −514−5.3% | Reduced |
| Arizona State Retirement System | 8,817 | $322.0K | 0.00% | +330+3.9% | Added |
| AQR Capital Management LLC | 8,363 | $306.0K | 0.00% | −1,554−15.7% | Reduced |
| Cubist Systematic Strategies, LLC | 8,274 | $303.0K | 0.00% | −34,331−80.6% | Reduced |
| Tower Research Capital LLC (TRC) | 8,223 | $301.0K | 0.00% | +4,827+142.1% | Added |
| Barclays PLC | 7,930 | $291.0K | 0.00% | −40,950−83.8% | Reduced |
| HighTower Advisors, LLC | 7,820 | $286.0K | 0.00% | +7,820 | New |
| E Fund Management Co., Ltd. | 7,202 | $263.0K | 0.01% | +7,202 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,006 | $256.0K | 0.00% | −1,220−14.8% | Reduced |
| Teacher Retirement System of Texas | 6,685 | $244.0K | 0.00% | +685+11.4% | Added |
| Wetherby Asset Management Inc | 6,582 | $241.0K | 0.01% | +6,582 | New |
| Public Employees Retirement Association of Colorado | 6,552 | $240.0K | 0.00% | −1,721−20.8% | Reduced |
| King Wealth | 6,000 | $219.0K | 0.04% | 00.0% | Unchanged |
| 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 |
| Amalgamated Bank | 5,541 | $203.0K | 0.00% | −370−6.3% | Reduced |
| Amalgamated Financial Corp. | 5,541 | $203.0K | 0.00% | +5,541 | New |
| Janus Henderson Group PLC | 5,495 | $201.0K | 0.00% | 00.0% | Unchanged |
| Fieldpoint Private Securities, LLC | 4,000 | $146.0K | 0.03% | +1,000+33.3% | Added |
| Point72 Hong Kong Ltd | 3,863 | $141.0K | 0.01% | +3,863 | New |
| Virtus ETF Advisers LLC | 3,686 | $135.0K | 0.06% | −215−5.5% | Reduced |
| BNP Paribas Arbitrage, SA | 3,073 | $112.4K | 0.00% | −5,252−63.1% | Reduced |
| Ameritas Investment Partners, Inc. | 2,702 | $99.0K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 2,329 | $85.2K | 0.00% | −6,951−74.9% | Reduced |
| 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 |
| Lazard Asset Management LLC | 1,733 | $63.0K | 0.00% | +657+61.1% | Added |
| Macquarie Group Ltd | 1,548 | $57.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 1,320 | $48.0K | 0.00% | −111−7.8% | Reduced |
| HighMark Wealth Management LLC | 1,175 | $43.0K | 0.03% | +100+9.3% | Added |
| US Bancorp | 1,160 | $42.0K | 0.00% | −130−10.1% | Reduced |
| Group One Trading, L.P. | 1,029 | $38.0K | 0.00% | −3,159−75.4% | Reduced |
| Parallel Advisors, LLC | 998 | $36.0K | 0.00% | +3+0.3% | Added |
| Nisa Investment Advisors, LLC | 500 | $18.0K | 0.00% | −2,979−85.6% | Reduced |
| The PNC Financial Services Group, Inc. | 416 | $15.0K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 420 | $15.0K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $7.00K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $6.66K | 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 |
| 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 |
| 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 |
| Rockbridge Investment Management, LCC | 100 | $3.91K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 73 | $3.00K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 85 | $3.00K | 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 |
| 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 |
| American Portfolios Advisors | 2 | $73 | 0.00% | 00.0% | Unchanged |
| 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 |
| International Biotechnology Trust PLC | 15,000 | – | – | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 316 | – | – | −54−14.6% | Reduced |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −177,294−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −145,551−100.0% | Sold out |
| Hillsdale Investment Management Inc. | 0 | $0 | 0.00% | −93,500−100.0% | Sold out |
| Goldstream Capital Management Ltd | 0 | $0 | 0.00% | −60,321−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −47,823−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −39,000−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −35,878−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −23,711−100.0% | Sold out |
| Robeco Institutional Asset Management B.V. | 0 | $0 | 0.00% | −21,932−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −20,870−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −19,290−100.0% | Sold out |
| Aviva PLC | 0 | $0 | 0.00% | −15,595−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −14,352−100.0% | Sold out |
| Boulder Hill Capital Management LP | 0 | $0 | 0.00% | −14,300−100.0% | Sold out |
| Harvest Investment Services, LLC | 0 | $0 | 0.00% | −14,141−100.0% | Sold out |
| Advisory Research Inc | 0 | $0 | 0.00% | −10,975−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −10,387−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −9,168−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −8,800−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −7,961−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −7,553−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −6,606−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −5,870−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −5,866−100.0% | Sold out |
| Delphia (USA) Inc. | 0 | $0 | 0.00% | −5,597−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −5,338−100.0% | Sold out |