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 2021
Institutional positions in Prothena Corp Public Ltd Co as of Jun 30, 2021. 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
- 156
- +10 vs. Q1 2021
- Shares held
- 40.4M
- +429.9K (+1.1%) vs. Q1 2021
- Total value
- $2.08B
- +$1.07B (+106.8%) vs. Q1 2021
- New holders
- 34
- 50 more added
- Sold out
- 24
- 39 more reduced
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wetherby Asset Management Inc | 4,647 | $239.0K | 0.01% | +4,647 | New |
| Vident Investment Advisory, LLC | 4,389 | $226.0K | 0.01% | +4,389 | New |
| Brighton Jones LLC | 4,000 | $206.0K | 0.01% | +4,000 | New |
| Raymond James & Associates | 3,900 | $200.0K | 0.00% | +3,900 | New |
| Panagora Asset Management Inc | 3,323 | $171.0K | 0.00% | −2,528−43.2% | Reduced |
| Point72 Hong Kong Ltd | 3,183 | $164.0K | 0.01% | +2,738+615.3% | Added |
| Ameritas Investment Partners, Inc. | 2,577 | $132.0K | 0.00% | 00.0% | Unchanged |
| Fieldpoint Private Securities, LLC | 2,000 | $116.0K | 0.03% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 2,104 | $108.0K | 0.08% | −465−18.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 2,087 | $107.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,068 | $106.0K | 0.00% | +140+7.3% | Added |
| Brewin Dolphin Wealth Management Ltd | 2,009 | $103.3K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 1,662 | $85.0K | 0.00% | −22,424−93.1% | Reduced |
| Parallel Advisors, LLC | 1,595 | $82.0K | 0.00% | +600+60.3% | Added |
| Meeder Asset Management Inc | 1,594 | $82.0K | 0.00% | +1,594 | New |
| US Bancorp | 1,290 | $66.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 1,246 | $64.1K | 0.00% | −16,350−92.9% | Reduced |
| STRS Ohio | 1,100 | $56.0K | 0.00% | +1,100 | New |
| Nisa Investment Advisors, LLC | 1,030 | $53.0K | 0.00% | +530+106.0% | Added |
| Penserra Capital Management LLC | 1,005 | $51.0K | 0.00% | +105+11.7% | Added |
| Mirae Asset Global Investments Co., Ltd. | 718 | $37.0K | 0.00% | +718 | New |
| Captrust Financial Advisors | 657 | $34.0K | 0.00% | −27−3.9% | Reduced |
| Signaturefd, LLC | 628 | $32.0K | 0.00% | −38−5.7% | Reduced |
| Simplex Trading, LLC | 562 | $28.0K | 0.00% | −8,175−93.6% | Reduced |
| Brewin Dolphin Ltd | 529 | $27.2K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 416 | $21.0K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 376 | $19.3K | 0.00% | 00.0% | Unchanged |
| Hall Laurie J Trustee | 330 | $17.0K | 0.01% | 00.0% | Unchanged |
| Tarbox Family Office, Inc. | 295 | $15.0K | 0.00% | +295 | New |
| Whittier Trust Co | 220 | $11.0K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $9.00K | 0.00% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 155 | $8.00K | 0.01% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 117 | $6.00K | 0.00% | −39−25.0% | Reduced |
| Albion Financial Group | 125 | $6.00K | 0.00% | +125 | New |
| Harbor Investment Advisory, LLC | 100 | $5.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 88 | $5.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 94 | $5.00K | 0.00% | +94 | New |
| Rockbridge Investment Management, LCC | 100 | $5.00K | 0.00% | +100 | New |
| Huntington National Bank | 73 | $4.00K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 85 | $4.00K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 63 | $3.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 32 | $2.00K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 25 | $1.00K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 12 | $1.00K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 20 | $1.00K | 0.00% | +1+5.3% | Added |
| Geneos Wealth Management Inc. | 26 | $1.00K | 0.00% | +26 | New |
| TD Private Client Wealth LLC | 12 | $617 | 0.00% | +12 | New |
| Kelly Financial Services LLC | 9,357 | $182 | 0.01% | +9,175+5,041.2% | Added |
| American Portfolios Advisors | 2 | $103 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Lowe Wealth Advisors, LLC | 1 | $0 | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 3 | $0 | 0.00% | −6−66.7% | Reduced |
| Coastal Capital Group, Inc. | 2 | $0 | 0.00% | 00.0% | Unchanged |
| TD Capital Management LLC | 1 | $0 | 0.00% | +1 | New |
| TSFG, LLC | 2 | – | – | 00.0% | Unchanged |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −437,430−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −313,851−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −70,000−100.0% | Sold out |
| Eversept Partners, LP | 0 | $0 | 0.00% | −68,575−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −66,043−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −65,119−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −62,500−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −56,273−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −48,162−100.0% | Sold out |
| Marshall Wace North America L.P. | 0 | $0 | 0.00% | −30,601−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −23,587−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −23,553−100.0% | Sold out |
| SG3 Management, LLC | 0 | $0 | 0.00% | −22,500−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −21,000−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −17,792−100.0% | Sold out |
| Connacht Asset Management LP | 0 | $0 | 0.00% | −15,313−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −14,584−100.0% | Sold out |
| Natixis Advisors, L.P. | 0 | $0 | 0.00% | −12,972−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −9,566−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −7,550−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −2,451−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −2,300−100.0% | Sold out |
| Spire Wealth Management | 0 | $0 | 0.00% | −1,068−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −952−100.0% | Sold out |