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, Q2 2025
Institutional positions in Prothena Corp Public Ltd Co as of Jun 30, 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
- 189
- +29 vs. Q1 2025
- Shares held
- 41.8M
- −10.5M (−20.2%) vs. Q1 2025
- Total value
- $253.6M
- −$393.7M (−60.8%) vs. Q1 2025
- New holders
- 51
- 54 more added
- Sold out
- 22
- 41 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Harbour Investments, Inc. | 1 | $6 | 0.00% | −2−66.7% | Reduced |
| Koesten, Hirschmann & Crabtree, INC. | 1 | $9 | 0.00% | +1 | New |
| CBIZ Investment Advisory Services, LLC | 2 | $12 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $18 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 4 | $25 | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 6 | $36 | 0.00% | +6 | New |
| Lowe Wealth Advisors, LLC | 10 | $61 | 0.00% | 00.0% | Unchanged |
| Key Financial Inc | 12 | $73 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 23 | $140 | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 33 | $200 | 0.00% | −678−95.4% | Reduced |
| CIBC Private Wealth Group, LLC | 49 | $297 | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 69 | $418 | 0.00% | +1+1.5% | Added |
| CVA Family Office, LLC | 72 | $437 | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $607 | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $607 | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $759 | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $941 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 155 | $941 | 0.00% | +155 | New |
| North Capital, Inc. | 159 | $965 | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $1.00K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $1.12K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 197 | $1.20K | 0.00% | −288−59.4% | Reduced |
| Evelyn Partners Investment Management LLP | 199 | $1.21K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 200 | $1.21K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 247 | $1.50K | 0.00% | +86+53.4% | Added |
| Manchester Capital Management LLC | 250 | $1.52K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 324 | $1.97K | 0.00% | +324 | New |
| Allworth Financial LP | 372 | $2.26K | 0.00% | +325+691.5% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 459 | $2.79K | 0.00% | +459 | New |
| Nisa Investment Advisors, LLC | 526 | $3.19K | 0.00% | −711−57.5% | Reduced |
| Parallel Advisors, LLC | 593 | $3.60K | 0.00% | +523+747.1% | Added |
| HM Payson & Co | 600 | $3.64K | 0.00% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 683 | $4.00K | 0.00% | +683 | New |
| IFP Advisors, Inc | 0 | $5.54K | 0.00% | −132−100.0% | Reduced |
| Sterling Capital Management LLC | 959 | $5.82K | 0.00% | +628+189.7% | Added |
| SBI Securities Co., Ltd. | 962 | $5.84K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 1,366 | $8.00K | 0.00% | +731+115.1% | Added |
| GF Fund Management Co. Ltd. | 1,377 | $8.36K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,440 | $9.00K | 0.00% | 00.0% | Unchanged |
| Flagship Wealth Advisors, LLC | 1,500 | $9.11K | 0.00% | +1,500 | New |
| HighMark Wealth Management LLC | 2,018 | $12.2K | 0.01% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 2,044 | $12.4K | 0.00% | +1,513+284.9% | Added |
| Walleye Capital LLC | 2,058 | $12.5K | 0.00% | +2,058 | New |
| Mirae Asset Global Investments Co., Ltd. | 2,079 | $12.6K | 0.00% | +278+15.4% | Added |
| Farther Finance Advisors, LLC | 2,457 | $14.9K | 0.00% | +1,490+154.1% | Added |
| Signaturefd, LLC | 3,357 | $20.4K | 0.00% | +2,997+832.5% | Added |
| Ameritas Investment Partners, Inc. | 4,368 | $26.5K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 5,000 | $30.4K | 0.00% | +5,000 | New |
| Public Employees Retirement Association of Colorado | 6,552 | $40.0K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 6,700 | $40.7K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 8,979 | $54.5K | 0.00% | −5,300−37.1% | Reduced |
| US Bancorp | 9,031 | $54.8K | 0.00% | +8,519+1,663.9% | Added |
| Legal & General Group Plc | 9,323 | $56.6K | 0.00% | −32,031−77.5% | Reduced |
| Prospera Financial Services Inc | 10,000 | $60.7K | 0.00% | +10,000 | New |
| Police & Firemen's Retirement System of New Jersey | 10,113 | $61.4K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 10,811 | $65.6K | 0.01% | +14+0.1% | Added |
| Skopos Labs, Inc. | 11,113 | $67.5K | 0.01% | +9,359+533.6% | Added |
| Coastal Bridge Advisors, LLC | 11,433 | $69.4K | 0.01% | +11,433 | New |
| Two Sigma Securities, LLC | 11,683 | $70.9K | 0.01% | +11,683 | New |
| Commonwealth Equity Services, LLC | 11,820 | $72.0K | 0.00% | −1,500−11.3% | Reduced |
| Voya Investment Management LLC | 11,896 | $72.2K | 0.00% | +212+1.8% | Added |
| Cary Street Partners Financial LLC | 12,500 | $75.9K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 12,709 | $77.1K | 0.00% | +10,815+571.0% | Added |
| Raymond James Financial Inc | 13,496 | $81.9K | 0.00% | +1,009+8.1% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $84.0K | 0.00% | 00.0% | Unchanged |
| Corton Capital Inc. | 13,964 | $84.8K | 0.10% | +13,964 | New |
| Jones Financial Companies LLLP | 14,000 | $85.1K | 0.00% | +14,000 | New |
| Manufacturers Life Insurance Company, The | 15,140 | $91.9K | 0.00% | −50,091−76.8% | Reduced |
| Shelton Capital Management | 15,279 | $92.7K | 0.00% | +46+0.3% | Added |
| State Board of Administration of Florida Retirement System | 15,386 | $93.4K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 15,568 | $94.5K | 0.00% | −472−2.9% | Reduced |
| STRS Ohio | 16,400 | $99.5K | 0.00% | +16,400 | New |
| Chicago Partners Investment Group LLC | 14,759 | $99.8K | 0.00% | +247+1.7% | Added |
| Los Angeles Capital Management LLC | 16,702 | $101.4K | 0.00% | +16,702 | New |
| The PNC Financial Services Group, Inc. | 18,028 | $109.4K | 0.00% | +17,540+3,594.3% | Added |
| Janus Henderson Group PLC | 18,047 | $109.8K | 0.00% | 00.0% | Unchanged |
| Jain Global LLC | 18,262 | $110.8K | 0.00% | +18,262 | New |
| Intech Investment Management LLC | 18,374 | $111.5K | 0.00% | −15,001−44.9% | Reduced |
| Voleon Capital Management LP | 18,536 | $112.5K | 0.01% | +18,536 | New |
| Virtus Investment Advisers, Inc. | 18,547 | $112.6K | 0.04% | +6,656+56.0% | Added |
| Oppenheimer & Co Inc | 18,595 | $112.9K | 0.00% | +18,595 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 18,896 | $114.7K | 0.00% | −72,586−79.3% | Reduced |
| Foundation Wealth Management, LLC | 19,471 | $118.2K | 0.08% | 00.0% | Unchanged |
| Mogy Joel R Investment Counsel Inc | 20,750 | $126.0K | 0.01% | +20,750 | New |
| Handelsbanken Fonder AB | 20,900 | $127.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 21,218 | $128.8K | 0.00% | −6,116−22.4% | Reduced |
| Ensign Peak Advisors, Inc | 21,643 | $131.4K | 0.00% | 00.0% | Unchanged |
| Nebula Research & Development LLC | 22,857 | $138.7K | 0.01% | +22,857 | New |
| Quadrature Capital Ltd | 23,752 | $144.4K | 0.00% | +23,752 | New |
| Point72 (DIFC) Ltd | 23,946 | $145.4K | 0.01% | +23,946 | New |
| Edgewood Management LLC | 24,060 | $146.0K | 0.00% | 00.0% | Unchanged |
| Purkiss Capital Advisors LLC | 24,904 | $151.2K | 0.08% | +3,275+15.1% | Added |
| MetLife Investment Management | 25,402 | $154.2K | 0.00% | 00.0% | Unchanged |
| Sherbrooke Park Advisers LLC | 27,221 | $165.2K | 0.07% | +27,221 | New |
| Cambridge Investment Research Advisors, Inc. | 27,311 | $166.0K | 0.00% | +17,147+168.7% | Added |
| Tudor Investment Corp Et Al | 27,999 | $170.0K | 0.00% | +27,999 | New |
| Alps Advisors Inc | 29,028 | $176.2K | 0.00% | −8,928−23.5% | Reduced |
| RBF Capital, LLC | 29,200 | $177.2K | 0.01% | 00.0% | Unchanged |
| Focused Wealth Management, Inc | 32,129 | $195.0K | 0.02% | 00.0% | Unchanged |
| Group One Trading, L.P. | 32,258 | $195.8K | 0.01% | +32,258 | New |