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 |
|---|---|---|---|---|---|
| MetLife Investment Management | 12,610 | $898.2K | 0.01% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 12,350 | $866.0K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 10,984 | $782.0K | 0.00% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 10,900 | $776.0K | 0.01% | −2,500−18.7% | Reduced |
| Engineers Gate Manager LP | 10,469 | $746.0K | 0.04% | −341−3.2% | Reduced |
| Franklin Resources Inc | 9,635 | $686.0K | 0.00% | +9,635 | New |
| Metropolitan Life Insurance Co | 9,280 | $661.0K | 0.01% | +9,280 | New |
| Ameriprise Financial Inc | 9,123 | $650.0K | 0.00% | +9,123 | New |
| AE Wealth Management LLC | 8,670 | $618.0K | 0.01% | +8,670 | New |
| Arizona State Retirement System | 8,423 | $600.0K | 0.00% | +831+10.9% | Added |
| Campbell & CO Investment Adviser LLC | 8,400 | $598.0K | 0.19% | +8,400 | New |
| Harvest Investment Services, LLC | 7,228 | $514.0K | 0.21% | +7,228 | New |
| Navellier & Associates Inc | 7,180 | $511.0K | 0.08% | +7,180 | New |
| BNP Paribas Arbitrage, SA | 6,754 | $481.1K | 0.00% | +5,508+442.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 6,690 | $477.0K | 0.00% | +6,690 | New |
| King Wealth | 6,000 | $427.0K | 0.09% | −2,000−25.0% | Reduced |
| Amalgamated Bank | 5,835 | $416.0K | 0.00% | −225−3.7% | Reduced |
| Tower Research Capital LLC (TRC) | 5,318 | $378.0K | 0.01% | +3,250+157.2% | Added |
| Old Well Partners, LLC | 4,824 | $344.0K | 0.18% | −3,100−39.1% | Reduced |
| 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 |
| Oppenheimer & Co Inc | 4,763 | $339.0K | 0.01% | +4,763 | New |
| State of Wyoming | 4,735 | $337.0K | 0.22% | −513−9.8% | Reduced |
| Raymond James & Associates | 4,700 | $335.0K | 0.00% | +800+20.5% | Added |
| Virtus ETF Advisers LLC | 4,458 | $318.0K | 0.14% | −236−5.0% | Reduced |
| PDT Partners, LLC | 4,420 | $315.0K | 0.02% | +4,420 | New |
| Hunter Perkins Capital Management, LLC | 4,114 | $293.0K | 0.06% | −1,686−29.1% | Reduced |
| 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 |
| Victory Capital Management Inc | 3,913 | $279.0K | 0.00% | +3,913 | New |
| Wetherby Asset Management Inc | 3,906 | $278.0K | 0.02% | −741−15.9% | Reduced |
| Schonfeld Strategic Advisors LLC | 3,765 | $269.0K | 0.00% | +3,765 | New |
| Gsa Capital Partners LLP | 3,611 | $257.0K | 0.03% | +3,611 | New |
| Russell Investments Group, Ltd. | 3,496 | $249.0K | 0.00% | +3,496 | New |
| Meristem Family Wealth, LLC | 3,290 | $234.0K | 0.02% | +3,290 | New |
| Summit Trail Advisors, LLC | 3,000 | $214.0K | 0.02% | +3,000 | New |
| Ameritas Investment Partners, Inc. | 2,702 | $192.0K | 0.01% | +125+4.9% | Added |
| Focused Wealth Management, Inc | 2,392 | $170.0K | 0.03% | −2,262−48.6% | Reduced |
| O'Shaughnessy Asset Management, LLC | 2,048 | $146.0K | 0.00% | +2,048 | New |
| Brewin Dolphin Wealth Management Ltd | 2,009 | $143.1K | 0.02% | 00.0% | Unchanged |
| Captrust Financial Advisors | 2,003 | $143.0K | 0.00% | +1,346+204.9% | Added |
| Fieldpoint Private Securities, LLC | 2,000 | $142.0K | 0.03% | 00.0% | Unchanged |
| Group One Trading, L.P. | 1,937 | $138.0K | 0.00% | +1,937 | New |
| Meeder Asset Management Inc | 1,813 | $129.0K | 0.01% | +219+13.7% | Added |
| HighMark Wealth Management LLC | 1,796 | $128.0K | 0.09% | −308−14.6% | Reduced |
| Macquarie Group Ltd | 1,548 | $110.0K | 0.00% | +1,548 | 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 |
| Walleye Trading LLC | 1,329 | $95.0K | 0.00% | +1,329 | New |
| US Bancorp | 1,290 | $92.0K | 0.00% | 00.0% | Unchanged |
| 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 |
| Parallel Advisors, LLC | 995 | $71.0K | 0.00% | −600−37.6% | Reduced |
| Lazard Asset Management LLC | 918 | $65.0K | 0.00% | +918 | New |
| Quantbot Technologies LP | 600 | $42.0K | 0.00% | +600 | New |
| Brewin Dolphin Ltd | 529 | $37.7K | 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 |
| Federation des caisses Desjardins du Quebec | 376 | $26.8K | 0.00% | 00.0% | Unchanged |
| Point72 Hong Kong Ltd | 324 | $23.0K | 0.00% | −2,859−89.8% | Reduced |
| Tarbox Family Office, Inc. | 295 | $21.0K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $13.0K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $13.0K | 0.01% | −9,175−98.1% | Reduced |
| Sittner & Nelson, LLC | 155 | $11.0K | 0.01% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 154 | $11.0K | 0.00% | +66+75.0% | Added |
| Albion Financial Group | 125 | $9.00K | 0.00% | 00.0% | Unchanged |
| Macroview Investment Management LLC | 131 | $9.00K | 0.01% | +131 | 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 |
| 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 |
| Rockefeller Capital Management L.P. | 85 | $6.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 73 | $5.00K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 63 | $4.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 62 | $3.00K | 0.00% | −500−89.0% | Reduced |
| 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 |
| Geneos Wealth Management Inc. | 26 | $1.00K | 0.00% | 00.0% | Unchanged |
| Hudock, Inc. | 28 | $1.00K | 0.00% | +28 | New |
| TD Private Client Wealth LLC | 12 | $855 | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 2 | $142 | 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 |
| 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 |
| Gerber Kawasaki Wealth & Investment Management | 1 | – | – | +1 | New |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −182,000−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −79,660−100.0% | Sold out |
| ClariVest Asset Management LLC | 0 | $0 | 0.00% | −28,733−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −25,886−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −23,821−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −11,174−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −7,326−100.0% | Sold out |
| Maven Securities LTD | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |