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, 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 |
|---|---|---|---|---|---|
| Covestor Ltd | 4 | $0 | 0.00% | 00.0% | Unchanged |
| CBIZ Investment Advisory Services, LLC | 2 | $25 | 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 |
| Clearstead Advisors, LLC | 4 | $50 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 9 | $118 | 0.00% | +9 | New |
| Lowe Wealth Advisors, LLC | 10 | $124 | 0.00% | 00.0% | Unchanged |
| Key Financial Inc | 12 | $148 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 23 | $285 | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 30 | $372 | 0.00% | +30 | New |
| Allworth Financial LP | 47 | $454 | 0.00% | +26+123.8% | Added |
| CIBC Private Wealth Group, LLC | 49 | $514 | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 42 | $520 | 0.00% | +11+35.5% | Added |
| Rothschild Investment LLC | 45 | $557 | 0.00% | +10+28.6% | Added |
| Coldstream Capital Management Inc | 51 | $632 | 0.00% | +51 | New |
| Truvestments Capital LLC | 68 | $842 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 70 | $866 | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 72 | $891 | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $1.24K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $1.24K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 112 | $1.39K | 0.00% | +92+460.0% | Added |
| Albion Financial Group | 125 | $1.55K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 132 | $1.63K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $1.92K | 0.00% | 00.0% | Unchanged |
| North Capital, Inc. | 159 | $1.97K | 0.00% | +159 | New |
| Advisor Group Holdings, Inc. | 161 | $1.99K | 0.00% | −98−37.8% | Reduced |
| Daiwa Securities Group Inc. | 195 | $2.00K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $2.28K | 0.00% | 00.0% | Unchanged |
| Evelyn Partners Investment Management LLP | 199 | $2.46K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 200 | $2.48K | 0.00% | +200 | New |
| Caitong International Asset Management Co., Ltd | 238 | $2.94K | 0.00% | +123+107.0% | Added |
| Manchester Capital Management LLC | 250 | $3.09K | 0.00% | 00.0% | Unchanged |
| Boston Private Wealth LLC | 274 | $3.39K | 0.00% | +274 | New |
| Aster Capital Management (DIFC) Ltd | 227 | $3.59K | 0.00% | −61−21.2% | Reduced |
| EverSource Wealth Advisors, LLC | 304 | $3.76K | 0.00% | +200+192.3% | Added |
| Sterling Capital Management LLC | 331 | $4.10K | 0.00% | −263−44.3% | Reduced |
| Signaturefd, LLC | 360 | $4.46K | 0.00% | +8+2.3% | Added |
| GAMMA Investing LLC | 485 | $6.00K | 0.00% | +358+281.9% | Added |
| The PNC Financial Services Group, Inc. | 488 | $6.04K | 0.00% | +72+17.3% | Added |
| US Bancorp | 512 | $6.34K | 0.00% | −349−40.5% | Reduced |
| Versant Capital Management, Inc | 531 | $6.57K | 0.00% | −98−15.6% | Reduced |
| HM Payson & Co | 600 | $7.42K | 0.00% | −200−25.0% | Reduced |
| CWM, LLC | 635 | $8.00K | 0.00% | −554−46.6% | Reduced |
| Ronald Blue Trust, Inc. | 711 | $8.80K | 0.00% | 00.0% | Unchanged |
| Lindbrook Capital, LLC | 874 | $10.8K | 0.00% | +197+29.1% | Added |
| Farther Finance Advisors, LLC | 967 | $11.4K | 0.00% | +614+173.9% | Added |
| SBI Securities Co., Ltd. | 962 | $11.9K | 0.00% | −10−1.0% | Reduced |
| Russell Investments Group, Ltd. | 1,194 | $14.8K | 0.00% | +313+35.5% | Added |
| Nisa Investment Advisors, LLC | 1,237 | $15.3K | 0.00% | +257+26.2% | Added |
| GF Fund Management Co. Ltd. | 1,377 | $17.0K | 0.00% | +247+21.9% | Added |
| Amalgamated Bank | 1,440 | $18.0K | 0.00% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 1,754 | $21.7K | 0.00% | +1,593+989.4% | Added |
| Amundi | 2,014 | $22.8K | 0.00% | +60+3.1% | Added |
| Tower Research Capital LLC (TRC) | 1,894 | $23.0K | 0.00% | −14,932−88.7% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,801 | $23.7K | 0.00% | +8+0.4% | Added |
| HighMark Wealth Management LLC | 2,018 | $25.0K | 0.01% | −9,150−81.9% | Reduced |
| Royal Bank of Canada | 4,318 | $53.0K | 0.00% | −2,586−37.5% | Reduced |
| Ameritas Investment Partners, Inc. | 4,368 | $54.1K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 6,552 | $81.0K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 6,700 | $82.9K | 0.00% | −6,200−48.1% | Reduced |
| Chicago Partners Investment Group LLC | 14,512 | $105.8K | 0.00% | +3,315+29.6% | Added |
| BNP Paribas Arbitrage, SA | 9,577 | $118.5K | 0.00% | −87,806−90.2% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 10,113 | $125.1K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 10,164 | $126.0K | 0.00% | +10,164 | New |
| Creative Planning | 10,690 | $132.3K | 0.00% | −5,371−33.4% | Reduced |
| China Universal Asset Management Co., Ltd. | 10,797 | $133.6K | 0.01% | −612−5.4% | Reduced |
| ProShare Advisors LLC | 11,632 | $143.9K | 0.00% | −2,892−19.9% | Reduced |
| Voya Investment Management LLC | 11,684 | $144.6K | 0.00% | −1,145−8.9% | Reduced |
| Virtus Investment Advisers, Inc. | 11,891 | $147.2K | 0.04% | +11,891 | New |
| Raymond James Financial Inc | 12,487 | $154.5K | 0.00% | −624−4.8% | Reduced |
| Cary Street Partners Financial LLC | 12,500 | $154.7K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 13,088 | $159.7K | 0.00% | −11,091−45.9% | Reduced |
| Cresset Asset Management, LLC | 13,125 | $162.4K | 0.00% | −6,309−32.5% | Reduced |
| Commonwealth Equity Services, LLC | 13,320 | $165.0K | 0.00% | +13,320 | New |
| HRT Financial LP | 14,036 | $173.0K | 0.00% | +14,036 | New |
| New York State Common Retirement Fund | 14,279 | $176.7K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 14,000 | $180.0K | 0.00% | 00.0% | Unchanged |
| Shelton Capital Management | 15,233 | $188.5K | 0.00% | +15,233 | New |
| State Board of Administration of Florida Retirement System | 15,386 | $190.4K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 16,033 | $198.4K | 0.00% | −22,361−58.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 16,040 | $198.5K | 0.00% | +10+0.1% | Added |
| Man Group plc | 17,000 | $210.4K | 0.00% | −60,430−78.0% | Reduced |
| D. E. Shaw & Co., Inc. | 17,803 | $220.3K | 0.00% | +17,803 | New |
| Jacobs Levy Equity Management, Inc | 18,553 | $229.6K | 0.00% | +18,553 | New |
| Janus Henderson Group PLC | 18,047 | $237.2K | 0.00% | 00.0% | Unchanged |
| Foundation Wealth Management, LLC | 19,471 | $241.0K | 0.19% | 00.0% | Unchanged |
| Franklin Resources Inc | 19,747 | $244.4K | 0.00% | +60+0.3% | Added |
| Corebridge Financial, Inc. | 20,831 | $257.8K | 0.00% | −309−1.5% | Reduced |
| Handelsbanken Fonder AB | 20,900 | $259.0K | 0.00% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 21,059 | $260.6K | 0.01% | +21,059 | New |
| Purkiss Capital Advisors LLC | 21,629 | $267.7K | 0.20% | +10,900+101.6% | Added |
| Ensign Peak Advisors, Inc | 21,643 | $267.8K | 0.00% | 00.0% | Unchanged |
| Edgewood Management LLC | 24,060 | $297.7K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 25,402 | $314.4K | 0.00% | −471−1.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 27,334 | $339.8K | 0.00% | +65+0.2% | Added |
| RBF Capital, LLC | 29,200 | $361.4K | 0.02% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 32,129 | $397.6K | 0.05% | 00.0% | Unchanged |
| California State Teachers Retirement System | 33,243 | $411.4K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 33,375 | $413.0K | 0.00% | +10,992+49.1% | Added |