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 2025
Institutional positions in Prothena Corp Public Ltd Co as of Mar 31, 2025. 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
- 161
- −8 vs. Q4 2024
- Shares held
- 52.3M
- −1.06M (−2.0%) vs. Q4 2024
- Total value
- $647.2M
- −$91.9M (−12.4%) vs. Q4 2024
- New holders
- 17
- 42 more added
- Sold out
- 25
- 58 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| KLP Kapitalforvaltning AS | 6,700 | $82.9K | 0.00% | −6,200−48.1% | Reduced |
| Public Employees Retirement Association of Colorado | 6,552 | $81.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 4,368 | $54.1K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 4,318 | $53.0K | 0.00% | −2,586−37.5% | Reduced |
| HighMark Wealth Management LLC | 2,018 | $25.0K | 0.01% | −9,150−81.9% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,801 | $23.7K | 0.00% | +8+0.4% | Added |
| Tower Research Capital LLC (TRC) | 1,894 | $23.0K | 0.00% | −14,932−88.7% | Reduced |
| Amundi | 2,014 | $22.8K | 0.00% | +60+3.1% | Added |
| Skopos Labs, Inc. | 1,754 | $21.7K | 0.00% | +1,593+989.4% | Added |
| Amalgamated Bank | 1,440 | $18.0K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 1,377 | $17.0K | 0.00% | +247+21.9% | Added |
| Nisa Investment Advisors, LLC | 1,237 | $15.3K | 0.00% | +257+26.2% | Added |
| Russell Investments Group, Ltd. | 1,194 | $14.8K | 0.00% | +313+35.5% | Added |
| SBI Securities Co., Ltd. | 962 | $11.9K | 0.00% | −10−1.0% | Reduced |
| Farther Finance Advisors, LLC | 967 | $11.4K | 0.00% | +614+173.9% | Added |
| Lindbrook Capital, LLC | 874 | $10.8K | 0.00% | +197+29.1% | Added |
| Ronald Blue Trust, Inc. | 711 | $8.80K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 635 | $8.00K | 0.00% | −554−46.6% | Reduced |
| HM Payson & Co | 600 | $7.42K | 0.00% | −200−25.0% | Reduced |
| Versant Capital Management, Inc | 531 | $6.57K | 0.00% | −98−15.6% | Reduced |
| US Bancorp | 512 | $6.34K | 0.00% | −349−40.5% | Reduced |
| The PNC Financial Services Group, Inc. | 488 | $6.04K | 0.00% | +72+17.3% | Added |
| GAMMA Investing LLC | 485 | $6.00K | 0.00% | +358+281.9% | Added |
| Signaturefd, LLC | 360 | $4.46K | 0.00% | +8+2.3% | Added |
| Sterling Capital Management LLC | 331 | $4.10K | 0.00% | −263−44.3% | Reduced |
| EverSource Wealth Advisors, LLC | 304 | $3.76K | 0.00% | +200+192.3% | Added |
| Aster Capital Management (DIFC) Ltd | 227 | $3.59K | 0.00% | −61−21.2% | Reduced |
| Boston Private Wealth LLC | 274 | $3.39K | 0.00% | +274 | New |
| Manchester Capital Management LLC | 250 | $3.09K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 238 | $2.94K | 0.00% | +123+107.0% | Added |
| Spire Wealth Management | 200 | $2.48K | 0.00% | +200 | New |
| Evelyn Partners Investment Management LLP | 199 | $2.46K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $2.28K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $2.00K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 161 | $1.99K | 0.00% | −98−37.8% | Reduced |
| North Capital, Inc. | 159 | $1.97K | 0.00% | +159 | New |
| Sittner & Nelson, LLC | 155 | $1.92K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 132 | $1.63K | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $1.55K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 112 | $1.39K | 0.00% | +92+460.0% | Added |
| Harbor Investment Advisory, LLC | 100 | $1.24K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $1.24K | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 72 | $891 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 70 | $866 | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 68 | $842 | 0.00% | 00.0% | Unchanged |
| Coldstream Capital Management Inc | 51 | $632 | 0.00% | +51 | New |
| Rothschild Investment LLC | 45 | $557 | 0.00% | +10+28.6% | Added |
| Larson Financial Group LLC | 42 | $520 | 0.00% | +11+35.5% | Added |
| CIBC Private Wealth Group, LLC | 49 | $514 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 47 | $454 | 0.00% | +26+123.8% | Added |
| Parkside Financial Bank & Trust | 30 | $372 | 0.00% | +30 | New |
| CoreCap Advisors, LLC | 23 | $285 | 0.00% | 00.0% | Unchanged |
| Key Financial Inc | 12 | $148 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 10 | $124 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 9 | $118 | 0.00% | +9 | New |
| Clearstead Advisors, LLC | 4 | $50 | 0.00% | 00.0% | Unchanged |
| Hallmark Capital Management Inc | 3 | $37 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $37 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 3 | $37 | 0.00% | +2+200.0% | Added |
| CBIZ Investment Advisory Services, LLC | 2 | $25 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 4 | $0 | 0.00% | 00.0% | Unchanged |
| AXA S.A. | 0 | $0 | 0.00% | −120,630−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −62,002−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −39,422−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −38,021−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −27,398−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −18,665−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −15,212−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −14,953−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −11,162−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −10,434−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −10,136−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −7,330−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −5,148−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −4,824−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −4,565−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −3,600−100.0% | Sold out |
| MeadowBrook Investment Advisors LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −158−100.0% | Sold out |
| Private Wealth Management Group, LLC | 0 | $0 | 0.00% | −104−100.0% | Sold out |
| Huntington National Bank | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| POM Investment Strategies, LLC | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Colonial Trust Advisors | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Sandy Spring Bank | 0 | $0 | 0.00% | 0 | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Cassady Schiller Wealth Management, LLC | – | – | – | – | Not filed |