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, 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 |
|---|---|---|---|---|---|
| Susquehanna Portfolio Strategies, LLC | 20,158 | $732.5K | 0.01% | +20,158 | New |
| Hudson Bay Capital Management LP | 20,000 | $726.8K | 0.01% | −12,500−38.5% | Reduced |
| HighTower Advisors, LLC | 18,735 | $680.0K | 0.00% | +18,735 | New |
| Schroder Investment Management Group | 15,453 | $561.6K | 0.00% | +11,221+265.1% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $535.0K | 0.00% | 00.0% | Unchanged |
| AQR Capital Management LLC | 13,781 | $500.8K | 0.00% | −4,728−25.5% | Reduced |
| Ameriprise Financial Inc | 13,760 | $500.0K | 0.00% | +2,697+24.4% | Added |
| Rockefeller Capital Management L.P. | 12,614 | $458.4K | 0.00% | −6,685−34.6% | Reduced |
| State Board of Administration of Florida Retirement System | 11,916 | $433.0K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 11,225 | $407.9K | 0.00% | −40−0.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 11,144 | $405.0K | 0.00% | 00.0% | Unchanged |
| E Fund Management Co., Ltd. | 11,096 | $403.2K | 0.03% | +3,037+37.7% | Added |
| STRS Ohio | 10,700 | $388.0K | 0.00% | +3,800+55.1% | Added |
| ProShare Advisors LLC | 10,414 | $378.4K | 0.00% | +1,526+17.2% | Added |
| Cubist Systematic Strategies, LLC | 9,879 | $359.0K | 0.00% | +9,879 | New |
| Royal Bank of Canada | 9,883 | $358.0K | 0.00% | +1,420+16.8% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,563 | $347.5K | 0.00% | +2,099+28.1% | Added |
| Teacher Retirement System of Texas | 9,266 | $337.0K | 0.00% | −1,965−17.5% | Reduced |
| 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 |
| Entropy Technologies, LP | 9,031 | $328.2K | 0.06% | +9,031 | New |
| Prelude Capital Management, LLC | 8,600 | $312.5K | 0.03% | +8,600 | New |
| HealthInvest Partners AB | 8,342 | $303.1K | 0.24% | +8,342 | New |
| Raymond James & Associates | 8,167 | $296.8K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 7,352 | $267.2K | 0.20% | 00.0% | Unchanged |
| XTX Topco Ltd | 7,264 | $264.0K | 0.06% | −3,848−34.6% | Reduced |
| Axq Capital, LP | 7,020 | $255.1K | 0.07% | +7,020 | New |
| Aquatic Capital Management LLC | 6,900 | $251.0K | 0.01% | −9,200−57.1% | Reduced |
| Public Employees Retirement Association of Colorado | 6,552 | $238.0K | 0.00% | 00.0% | Unchanged |
| Jump Financial, LLC | 6,457 | $234.6K | 0.01% | −56,660−89.8% | Reduced |
| Fox Run Management, L.L.C. | 6,403 | $232.7K | 0.06% | −3,214−33.4% | Reduced |
| Oppenheimer & Co Inc | 6,326 | $229.9K | 0.00% | −1,582−20.0% | Reduced |
| China Universal Asset Management Co., Ltd. | 6,203 | $225.4K | 0.04% | +4,828+351.1% | Added |
| ADAR1 Capital Management, LLC | 6,102 | $221.7K | 0.10% | +6,102 | New |
| Amalgamated Bank | 6,050 | $220.0K | 0.00% | −277−4.4% | Reduced |
| Snowden Capital Advisors LLC | 6,000 | $218.0K | 0.01% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 5,985 | $217.0K | 0.00% | +5,985 | New |
| HRT Financial LP | 5,904 | $214.0K | 0.00% | −5,555−48.5% | Reduced |
| Vident Advisory, LLC | 5,639 | $204.9K | 0.01% | +5,639 | New |
| Tower Research Capital LLC (TRC) | 5,019 | $182.4K | 0.00% | +3,621+259.0% | Added |
| Ameritas Investment Partners, Inc. | 4,368 | $158.7K | 0.01% | +249+6.0% | Added |
| Lazard Asset Management LLC | 4,256 | $154.0K | 0.00% | +4,256 | New |
| Advisor Group Holdings, Inc. | 4,095 | $148.8K | 0.00% | −345−7.8% | Reduced |
| Metropolitan Life Insurance Co | 2,389 | $86.8K | 0.00% | 00.0% | Unchanged |
| Virtus ETF Advisers LLC | 2,373 | $86.2K | 0.05% | +1,001+73.0% | Added |
| Allspring Global Investments Holdings, LLC | 1,947 | $70.8K | 0.00% | −1,149−37.1% | Reduced |
| The PNC Financial Services Group, Inc. | 1,544 | $56.1K | 0.00% | +1,122+265.9% | Added |
| Advisory Services Network, LLC | 1,208 | $43.9K | 0.00% | +1,208 | New |
| US Bancorp | 1,161 | $42.2K | 0.00% | −3,021−72.2% | Reduced |
| Clear Street Markets LLC | 1,000 | $36.0K | 0.01% | +1,000 | New |
| KBC Group NV | 930 | $34.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 900 | $32.7K | 0.00% | −610−40.4% | Reduced |
| Neo Ivy Capital Management | 482 | $18.0K | 0.04% | +482 | New |
| Farther Finance Advisors, LLC | 384 | $14.0K | 0.00% | +358+1,376.9% | Added |
| Russell Investments Group, Ltd. | 382 | $13.9K | 0.00% | +382 | New |
| Signaturefd, LLC | 377 | $13.7K | 0.00% | +82+27.8% | Added |
| Byrne Asset Management LLC | 300 | $11.4K | 0.01% | +20+7.1% | Added |
| CWM, LLC | 311 | $11.0K | 0.00% | +264+561.7% | Added |
| MeadowBrook Investment Advisors LLC | 200 | $7.27K | 0.01% | +200 | New |
| Asset Dedication, LLC | 184 | $7.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $7.00K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $6.61K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $5.63K | 0.00% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 129 | $4.69K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 127 | $4.62K | 0.00% | +102+408.0% | Added |
| Albion Financial Group | 125 | $4.54K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $3.92K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $3.63K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $3.63K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 93 | $3.38K | 0.00% | +65+232.1% | Added |
| Huntington National Bank | 79 | $2.87K | 0.00% | +75+1,875.0% | Added |
| GWM Advisors LLC | 72 | $2.62K | 0.00% | +72 | New |
| Massmutual Trust Co FSB | 62 | $2.25K | 0.00% | +62 | New |
| Lindbrook Capital, LLC | 44 | $1.60K | 0.00% | +28+175.0% | Added |
| GAMMA Investing LLC | 40 | $1.14K | 0.00% | +40 | New |
| Private Wealth Management Group, LLC | 25 | $909 | 0.00% | +25 | New |
| POM Investment Strategies, LLC | 24 | $872 | 0.00% | +24 | New |
| Quadrant Capital Group LLC | 19 | $691 | 0.00% | 00.0% | Unchanged |
| Blue Bell Private Wealth Management, LLC | 12 | $436 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 10 | $363 | 0.00% | 00.0% | Unchanged |
| Able Wealth Management LLC | 8 | $291 | 0.00% | +8 | New |
| JFS Wealth Advisors, LLC | 4 | $146 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $109 | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 3 | $109 | 0.00% | +3 | New |
| Global Retirement Partners, LLC | 3 | $99 | 0.00% | +3 | New |
| Harbour Investments, Inc. | 1 | $36 | 0.00% | −4−80.0% | Reduced |
| Covestor Ltd | 3 | $0 | 0.00% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −853,479−100.0% | Sold out |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −382,305−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −219,623−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −165,615−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −136,203−100.0% | Sold out |
| Frazier Life Sciences Management, L.P. | 0 | $0 | 0.00% | −127,900−100.0% | Sold out |
| Affinity Asset Advisors, LLC | 0 | $0 | 0.00% | −79,214−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −60,853−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −55,579−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −45,952−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −34,890−100.0% | Sold out |
| Hillsdale Investment Management Inc. | 0 | $0 | 0.00% | −31,300−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −30,709−100.0% | Sold out |