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, Q3 2021
Institutional positions in Prothena Corp Public Ltd Co as of Sep 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
- 192
- +37 vs. Q2 2021
- Shares held
- 40.9M
- +504.5K (+1.2%) vs. Q2 2021
- Total value
- $2.92B
- +$837.8M (+40.3%) vs. Q2 2021
- New holders
- 50
- 57 more added
- Sold out
- 13
- 49 more reduced
1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Harbour Investments, Inc. | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 3 | $0 | 0.00% | 00.0% | Unchanged |
| TD Capital Management LLC | 1 | $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% | 00.0% | Unchanged |
| Coastal Capital Group, Inc. | 2 | $0 | 0.00% | 00.0% | Unchanged |
| Patriot Financial Group Insurance Agency, LLC | 4 | $0 | 0.00% | +4 | New |
| Investors Research Corp | 4 | $0 | 0.00% | +4 | New |
| TSFG, LLC | 2 | $0 | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 2 | $142 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 12 | $855 | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 26 | $1.00K | 0.00% | 00.0% | Unchanged |
| Hudock, Inc. | 28 | $1.00K | 0.00% | +28 | New |
| Allworth Financial LP | 23 | $2.00K | 0.00% | +11+91.7% | Added |
| Steward Partners Investment Advisory, LLC | 25 | $2.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 62 | $3.00K | 0.00% | −500−89.0% | Reduced |
| Bessemer Group Inc | 63 | $4.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 73 | $5.00K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 85 | $6.00K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 100 | $7.00K | 0.00% | 00.0% | Unchanged |
| Rockbridge Investment Management, LCC | 100 | $7.00K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 103 | $7.00K | 0.00% | +103 | New |
| Hall Laurie J Trustee | 110 | $8.00K | 0.00% | −220−66.7% | Reduced |
| TCI Wealth Advisors, Inc. | 117 | $8.00K | 0.00% | +23+24.5% | Added |
| Albion Financial Group | 125 | $9.00K | 0.00% | 00.0% | Unchanged |
| Macroview Investment Management LLC | 131 | $9.00K | 0.01% | +131 | New |
| Sittner & Nelson, LLC | 155 | $11.0K | 0.01% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 154 | $11.0K | 0.00% | +66+75.0% | Added |
| Kelly Financial Services LLC | 182 | $13.0K | 0.01% | −9,175−98.1% | Reduced |
| Asset Dedication, LLC | 184 | $13.0K | 0.00% | 00.0% | Unchanged |
| Tarbox Family Office, Inc. | 295 | $21.0K | 0.00% | 00.0% | Unchanged |
| Point72 Hong Kong Ltd | 324 | $23.0K | 0.00% | −2,859−89.8% | Reduced |
| Federation des caisses Desjardins du Quebec | 376 | $26.8K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 420 | $30.0K | 0.00% | −208−33.1% | Reduced |
| The PNC Financial Services Group, Inc. | 416 | $30.0K | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Ltd | 529 | $37.7K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 600 | $42.0K | 0.00% | +600 | New |
| Lazard Asset Management LLC | 918 | $65.0K | 0.00% | +918 | New |
| Parallel Advisors, LLC | 995 | $71.0K | 0.00% | −600−37.6% | Reduced |
| Nisa Investment Advisors, LLC | 1,030 | $73.0K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 1,030 | $73.0K | 0.00% | +25+2.5% | Added |
| US Bancorp | 1,290 | $92.0K | 0.00% | 00.0% | Unchanged |
| Walleye Trading LLC | 1,329 | $95.0K | 0.00% | +1,329 | New |
| Advisor Group Holdings, Inc. | 1,438 | $101.0K | 0.00% | +1,321+1,129.1% | Added |
| Acadian Asset Management LLC | 1,430 | $101.0K | 0.00% | +1,430 | New |
| Macquarie Group Ltd | 1,548 | $110.0K | 0.00% | +1,548 | New |
| HighMark Wealth Management LLC | 1,796 | $128.0K | 0.09% | −308−14.6% | Reduced |
| Meeder Asset Management Inc | 1,813 | $129.0K | 0.01% | +219+13.7% | Added |
| Group One Trading, L.P. | 1,937 | $138.0K | 0.00% | +1,937 | New |
| Fieldpoint Private Securities, LLC | 2,000 | $142.0K | 0.03% | 00.0% | Unchanged |
| Captrust Financial Advisors | 2,003 | $143.0K | 0.00% | +1,346+204.9% | Added |
| Brewin Dolphin Wealth Management Ltd | 2,009 | $143.1K | 0.02% | 00.0% | Unchanged |
| O'Shaughnessy Asset Management, LLC | 2,048 | $146.0K | 0.00% | +2,048 | New |
| Focused Wealth Management, Inc | 2,392 | $170.0K | 0.03% | −2,262−48.6% | Reduced |
| Ameritas Investment Partners, Inc. | 2,702 | $192.0K | 0.01% | +125+4.9% | Added |
| Summit Trail Advisors, LLC | 3,000 | $214.0K | 0.02% | +3,000 | New |
| Meristem Family Wealth, LLC | 3,290 | $234.0K | 0.02% | +3,290 | New |
| Russell Investments Group, Ltd. | 3,496 | $249.0K | 0.00% | +3,496 | New |
| Gsa Capital Partners LLP | 3,611 | $257.0K | 0.03% | +3,611 | New |
| Schonfeld Strategic Advisors LLC | 3,765 | $269.0K | 0.00% | +3,765 | New |
| Wetherby Asset Management Inc | 3,906 | $278.0K | 0.02% | −741−15.9% | Reduced |
| Victory Capital Management Inc | 3,913 | $279.0K | 0.00% | +3,913 | New |
| Brighton Jones LLC | 4,000 | $285.0K | 0.01% | 00.0% | Unchanged |
| Xcel Wealth Management, LLC | 4,000 | $285.0K | 0.08% | +4,000 | New |
| Hunter Perkins Capital Management, LLC | 4,114 | $293.0K | 0.06% | −1,686−29.1% | Reduced |
| PDT Partners, LLC | 4,420 | $315.0K | 0.02% | +4,420 | New |
| Virtus ETF Advisers LLC | 4,458 | $318.0K | 0.14% | −236−5.0% | Reduced |
| Raymond James & Associates | 4,700 | $335.0K | 0.00% | +800+20.5% | Added |
| State of Wyoming | 4,735 | $337.0K | 0.22% | −513−9.8% | Reduced |
| Oppenheimer & Co Inc | 4,763 | $339.0K | 0.01% | +4,763 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 4,811 | $343.0K | 0.00% | +2,724+130.5% | Added |
| Teacher Retirement System of Texas | 4,809 | $343.0K | 0.00% | +4,809 | New |
| Old Well Partners, LLC | 4,824 | $344.0K | 0.18% | −3,100−39.1% | Reduced |
| Tower Research Capital LLC (TRC) | 5,318 | $378.0K | 0.01% | +3,250+157.2% | Added |
| Amalgamated Bank | 5,835 | $416.0K | 0.00% | −225−3.7% | Reduced |
| King Wealth | 6,000 | $427.0K | 0.09% | −2,000−25.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 6,690 | $477.0K | 0.00% | +6,690 | New |
| BNP Paribas Arbitrage, SA | 6,754 | $481.1K | 0.00% | +5,508+442.1% | Added |
| Navellier & Associates Inc | 7,180 | $511.0K | 0.08% | +7,180 | New |
| Harvest Investment Services, LLC | 7,228 | $514.0K | 0.21% | +7,228 | New |
| Campbell & CO Investment Adviser LLC | 8,400 | $598.0K | 0.19% | +8,400 | New |
| Arizona State Retirement System | 8,423 | $600.0K | 0.00% | +831+10.9% | Added |
| AE Wealth Management LLC | 8,670 | $618.0K | 0.01% | +8,670 | New |
| Ameriprise Financial Inc | 9,123 | $650.0K | 0.00% | +9,123 | New |
| Metropolitan Life Insurance Co | 9,280 | $661.0K | 0.01% | +9,280 | New |
| Franklin Resources Inc | 9,635 | $686.0K | 0.00% | +9,635 | New |
| Engineers Gate Manager LP | 10,469 | $746.0K | 0.04% | −341−3.2% | Reduced |
| Virginia Retirement Systems Et Al | 10,900 | $776.0K | 0.01% | −2,500−18.7% | Reduced |
| Public Employees Retirement Association of Colorado | 10,984 | $782.0K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 12,350 | $866.0K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 12,610 | $898.2K | 0.01% | 00.0% | Unchanged |
| Jane Street Group, LLC | 12,949 | $922.0K | 0.00% | +12,949 | New |
| Royal Bank of Canada | 13,022 | $928.0K | 0.00% | −44,090−77.2% | Reduced |
| AQR Capital Management LLC | 13,346 | $951.0K | 0.00% | +8,429+171.4% | Added |
| STRS Ohio | 13,700 | $975.0K | 0.00% | +12,600+1,145.5% | Added |
| Voya Investment Management LLC | 13,767 | $980.0K | 0.00% | +282+2.1% | Added |
| Legal & General Group Plc | 14,082 | $1.00M | 0.00% | +6,095+76.3% | Added |
| ProShare Advisors LLC | 14,101 | $1.00M | 0.00% | −2,684−16.0% | Reduced |
| JPMorgan Chase & Co | 14,286 | $1.02M | 0.00% | −1,042−6.8% | Reduced |
| Jennison Associates LLC | 14,271 | $1.02M | 0.00% | +14,271 | New |