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 2023
Institutional positions in Prothena Corp Public Ltd Co as of Dec 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
- 187
- +2 vs. Q3 2023
- Shares held
- 53.6M
- +627.6K (+1.2%) vs. Q3 2023
- Total value
- $1.95B
- −$606.9M (−23.8%) vs. Q3 2023
- New holders
- 40
- 68 more added
- Sold out
- 38
- 46 more reduced
2 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Covestor Ltd | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 1 | $36 | 0.00% | −4−80.0% | Reduced |
| Global Retirement Partners, LLC | 3 | $99 | 0.00% | +3 | New |
| Whittier Trust Co of Nevada Inc | 3 | $109 | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 3 | $109 | 0.00% | +3 | New |
| JFS Wealth Advisors, LLC | 4 | $146 | 0.00% | 00.0% | Unchanged |
| Able Wealth Management LLC | 8 | $291 | 0.00% | +8 | New |
| Lowe Wealth Advisors, LLC | 10 | $363 | 0.00% | 00.0% | Unchanged |
| Blue Bell Private Wealth Management, LLC | 12 | $436 | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 19 | $691 | 0.00% | 00.0% | Unchanged |
| POM Investment Strategies, LLC | 24 | $872 | 0.00% | +24 | New |
| Private Wealth Management Group, LLC | 25 | $909 | 0.00% | +25 | New |
| GAMMA Investing LLC | 40 | $1.14K | 0.00% | +40 | New |
| Lindbrook Capital, LLC | 44 | $1.60K | 0.00% | +28+175.0% | Added |
| Massmutual Trust Co FSB | 62 | $2.25K | 0.00% | +62 | New |
| GWM Advisors LLC | 72 | $2.62K | 0.00% | +72 | New |
| Huntington National Bank | 79 | $2.87K | 0.00% | +75+1,875.0% | Added |
| EverSource Wealth Advisors, LLC | 93 | $3.38K | 0.00% | +65+232.1% | Added |
| Harbor Investment Advisory, LLC | 100 | $3.63K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $3.63K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $3.92K | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $4.54K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 127 | $4.62K | 0.00% | +102+408.0% | Added |
| Focused Wealth Management, Inc | 129 | $4.69K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $5.63K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $6.61K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $7.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $7.00K | 0.00% | 00.0% | Unchanged |
| MeadowBrook Investment Advisors LLC | 200 | $7.27K | 0.01% | +200 | New |
| CWM, LLC | 311 | $11.0K | 0.00% | +264+561.7% | Added |
| Byrne Asset Management LLC | 300 | $11.4K | 0.01% | +20+7.1% | Added |
| Signaturefd, LLC | 377 | $13.7K | 0.00% | +82+27.8% | Added |
| Russell Investments Group, Ltd. | 382 | $13.9K | 0.00% | +382 | New |
| Farther Finance Advisors, LLC | 384 | $14.0K | 0.00% | +358+1,376.9% | Added |
| Neo Ivy Capital Management | 482 | $18.0K | 0.04% | +482 | New |
| Nisa Investment Advisors, LLC | 900 | $32.7K | 0.00% | −610−40.4% | Reduced |
| KBC Group NV | 930 | $34.0K | 0.00% | 00.0% | Unchanged |
| Clear Street Markets LLC | 1,000 | $36.0K | 0.01% | +1,000 | New |
| US Bancorp | 1,161 | $42.2K | 0.00% | −3,021−72.2% | Reduced |
| Advisory Services Network, LLC | 1,208 | $43.9K | 0.00% | +1,208 | New |
| The PNC Financial Services Group, Inc. | 1,544 | $56.1K | 0.00% | +1,122+265.9% | Added |
| Allspring Global Investments Holdings, LLC | 1,947 | $70.8K | 0.00% | −1,149−37.1% | Reduced |
| Virtus ETF Advisers LLC | 2,373 | $86.2K | 0.05% | +1,001+73.0% | Added |
| Metropolitan Life Insurance Co | 2,389 | $86.8K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 4,095 | $148.8K | 0.00% | −345−7.8% | Reduced |
| Lazard Asset Management LLC | 4,256 | $154.0K | 0.00% | +4,256 | New |
| Ameritas Investment Partners, Inc. | 4,368 | $158.7K | 0.01% | +249+6.0% | Added |
| Tower Research Capital LLC (TRC) | 5,019 | $182.4K | 0.00% | +3,621+259.0% | Added |
| Vident Advisory, LLC | 5,639 | $204.9K | 0.01% | +5,639 | New |
| HRT Financial LP | 5,904 | $214.0K | 0.00% | −5,555−48.5% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 5,985 | $217.0K | 0.00% | +5,985 | New |
| Snowden Capital Advisors LLC | 6,000 | $218.0K | 0.01% | 00.0% | Unchanged |
| Amalgamated Bank | 6,050 | $220.0K | 0.00% | −277−4.4% | Reduced |
| ADAR1 Capital Management, LLC | 6,102 | $221.7K | 0.10% | +6,102 | New |
| China Universal Asset Management Co., Ltd. | 6,203 | $225.4K | 0.04% | +4,828+351.1% | Added |
| Oppenheimer & Co Inc | 6,326 | $229.9K | 0.00% | −1,582−20.0% | Reduced |
| Fox Run Management, L.L.C. | 6,403 | $232.7K | 0.06% | −3,214−33.4% | Reduced |
| Jump Financial, LLC | 6,457 | $234.6K | 0.01% | −56,660−89.8% | Reduced |
| Public Employees Retirement Association of Colorado | 6,552 | $238.0K | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 6,900 | $251.0K | 0.01% | −9,200−57.1% | Reduced |
| Axq Capital, LP | 7,020 | $255.1K | 0.07% | +7,020 | New |
| XTX Topco Ltd | 7,264 | $264.0K | 0.06% | −3,848−34.6% | Reduced |
| HighMark Wealth Management LLC | 7,352 | $267.2K | 0.20% | 00.0% | Unchanged |
| Raymond James & Associates | 8,167 | $296.8K | 0.00% | 00.0% | Unchanged |
| HealthInvest Partners AB | 8,342 | $303.1K | 0.24% | +8,342 | New |
| Prelude Capital Management, LLC | 8,600 | $312.5K | 0.03% | +8,600 | New |
| Entropy Technologies, LP | 9,031 | $328.2K | 0.06% | +9,031 | New |
| Brinker Capital Investments, LLC | 9,360 | $330.2K | 0.00% | +9,360 | New |
| Orion Portfolio Solutions, LLC | 9,360 | $330.2K | 0.00% | +9,360 | New |
| Teacher Retirement System of Texas | 9,266 | $337.0K | 0.00% | −1,965−17.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,563 | $347.5K | 0.00% | +2,099+28.1% | Added |
| Royal Bank of Canada | 9,883 | $358.0K | 0.00% | +1,420+16.8% | Added |
| Cubist Systematic Strategies, LLC | 9,879 | $359.0K | 0.00% | +9,879 | New |
| ProShare Advisors LLC | 10,414 | $378.4K | 0.00% | +1,526+17.2% | Added |
| STRS Ohio | 10,700 | $388.0K | 0.00% | +3,800+55.1% | Added |
| E Fund Management Co., Ltd. | 11,096 | $403.2K | 0.03% | +3,037+37.7% | Added |
| Teachers Retirement System of the State of Kentucky | 11,144 | $405.0K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 11,225 | $407.9K | 0.00% | −40−0.4% | Reduced |
| State Board of Administration of Florida Retirement System | 11,916 | $433.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 12,614 | $458.4K | 0.00% | −6,685−34.6% | Reduced |
| Ameriprise Financial Inc | 13,760 | $500.0K | 0.00% | +2,697+24.4% | Added |
| AQR Capital Management LLC | 13,781 | $500.8K | 0.00% | −4,728−25.5% | Reduced |
| DekaBank Deutsche Girozentrale | 14,000 | $535.0K | 0.00% | 00.0% | Unchanged |
| Schroder Investment Management Group | 15,453 | $561.6K | 0.00% | +11,221+265.1% | Added |
| HighTower Advisors, LLC | 18,735 | $680.0K | 0.00% | +18,735 | New |
| Hudson Bay Capital Management LP | 20,000 | $726.8K | 0.01% | −12,500−38.5% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 20,158 | $732.5K | 0.01% | +20,158 | New |
| American International Group, Inc. | 20,973 | $762.2K | 0.00% | +283+1.4% | Added |
| MetLife Investment Management | 21,852 | $794.1K | 0.01% | 00.0% | Unchanged |
| Deutsche Bank AG | 22,201 | $806.8K | 0.00% | −412−1.8% | Reduced |
| HAP Trading, LLC | 22,701 | $825.0K | 0.24% | +22,701 | New |
| Guggenheim Capital LLC | 23,461 | $852.6K | 0.01% | +8,118+52.9% | Added |
| Edgewood Management LLC | 24,060 | $874.3K | 0.00% | 00.0% | Unchanged |
| Capula Management Ltd | 24,310 | $883.4K | 0.06% | +24,310 | New |
| Thornburg Investment Management Inc | 25,591 | $930.0K | 0.01% | −2,680−9.5% | Reduced |
| Dynamic Technology Lab Private Ltd | 26,476 | $962.0K | 0.10% | +26,476 | New |
| Invesco Ltd. | 26,615 | $967.2K | 0.00% | −4,102−13.4% | Reduced |
| Group One Trading, L.P. | 27,456 | $997.8K | 0.03% | +27,456 | New |
| Mirae Asset Global Investments Co., Ltd. | 27,751 | $1.01M | 0.00% | +2,099+8.2% | Added |
| Tudor Investment Corp Et Al | 28,561 | $1.04M | 0.01% | +28,561 | New |