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, Q4 2022
Institutional positions in Prothena Corp Public Ltd Co as of Dec 31, 2022. 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
- 201
- +21 vs. Q3 2022
- Shares held
- 49.4M
- +4.96M (+11.2%) vs. Q3 2022
- Total value
- $2.98B
- +$282.3M (+10.5%) vs. Q3 2022
- New holders
- 44
- 77 more added
- Sold out
- 23
- 51 more reduced
3 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2022: 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, Q4 2022
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mirae Asset Global Investments Co., Ltd. | 16,704 | $1.01M | 0.00% | +53+0.3% | Added |
| Legal & General Group Plc | 17,034 | $1.03M | 0.00% | +102+0.6% | Added |
| American International Group, Inc. | 17,344 | $1.04M | 0.01% | +502+3.0% | Added |
| Prudential Financial Inc | 18,947 | $1.14M | 0.00% | −20,932−52.5% | Reduced |
| Algert Global LLC | 19,203 | $1.16M | 0.06% | +10,533+121.5% | Added |
| MetLife Investment Management | 19,561 | $1.18M | 0.01% | 00.0% | Unchanged |
| AXA S.A. | 19,852 | $1.20M | 0.00% | −32,373−62.0% | Reduced |
| Deutsche Bank AG | 21,898 | $1.32M | 0.00% | +5,619+34.5% | Added |
| Man Group plc | 23,697 | $1.43M | 0.01% | −27,019−53.3% | Reduced |
| Edgewood Management LLC | 24,060 | $1.45M | 0.01% | −940−3.8% | Reduced |
| Ameriprise Financial Inc | 24,180 | $1.46M | 0.00% | −10,153−29.6% | Reduced |
| Thornburg Investment Management Inc | 24,274 | $1.46M | 0.02% | +24,274 | New |
| BNP Paribas Arbitrage, SA | 25,411 | $1.53M | 0.00% | −12,996−33.8% | Reduced |
| D. E. Shaw & Co., Inc. | 26,856 | $1.62M | 0.00% | −78,374−74.5% | Reduced |
| Mariner, LLC | 26,927 | $1.62M | 0.01% | +9,898+58.1% | Added |
| Schonfeld Strategic Advisors LLC | 28,128 | $1.69M | 0.01% | −16,662−37.2% | Reduced |
| Macquarie Group Ltd | 28,569 | $1.72M | 0.00% | +27,702+3,195.2% | Added |
| Capital Fund Management S.A. | 29,772 | $1.79M | 0.04% | +29,772 | New |
| Trexquant Investment LP | 31,237 | $1.88M | 0.05% | +31,237 | New |
| Alps Advisors Inc | 32,776 | $1.97M | 0.02% | +7,186+28.1% | Added |
| State of Wisconsin Investment Board | 32,995 | $1.99M | 0.01% | −16,315−33.1% | Reduced |
| Monarch Partners Asset Management LLC | 35,645 | $2.15M | 0.63% | +2,285+6.8% | Added |
| New York State Common Retirement Fund | 35,780 | $2.16M | 0.00% | −611−1.7% | Reduced |
| State of New Jersey Common Pension Fund D | 37,600 | $2.27M | 0.01% | +37,600 | New |
| Voya Investment Management LLC | 38,000 | $2.29M | 0.00% | +10,610+38.7% | Added |
| Credit Suisse AG | 38,887 | $2.34M | 0.00% | +7,609+24.3% | Added |
| Moody Aldrich Partners LLC | 39,237 | $2.36M | 0.48% | +39,237 | New |
| Cubist Systematic Strategies, LLC | 40,719 | $2.45M | 0.02% | +22,999+129.8% | Added |
| Platinum Investment Management Ltd | 41,508 | $2.50M | 0.10% | −7,406−15.1% | Reduced |
| Invesco Ltd. | 42,304 | $2.55M | 0.00% | +24,822+142.0% | Added |
| California State Teachers Retirement System | 43,220 | $2.60M | 0.00% | +1,017+2.4% | Added |
| Alliancebernstein L.P. | 44,866 | $2.70M | 0.00% | −500−1.1% | Reduced |
| Jennison Associates LLC | 49,241 | $2.97M | 0.00% | +49,241 | New |
| Rhumbline Advisers | 49,718 | $3.00M | 0.00% | +2,827+6.0% | Added |
| Handelsbanken Fonder AB | 52,000 | $3.13M | 0.02% | −33,700−39.3% | Reduced |
| EAM Investors, LLC | 53,346 | $3.21M | 0.67% | −291−0.5% | Reduced |
| RBF Capital, LLC | 54,362 | $3.27M | 0.25% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 55,062 | $3.29M | 0.00% | +2,031+3.8% | Added |
| Principal Financial Group Inc | 56,007 | $3.37M | 0.00% | +36,992+194.5% | Added |
| Norges Bank | 59,259 | $3.57M | 0.00% | +23,859+67.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 60,432 | $3.64M | 0.02% | +32,876+119.3% | Added |
| First Trust Advisors LP | 62,396 | $3.76M | 0.00% | +23,588+60.8% | Added |
| Citigroup Inc | 63,400 | $3.82M | 0.01% | −34,744−35.4% | Reduced |
| Pura Vida Investments, LLC | 64,000 | $3.86M | 0.65% | +64,000 | New |
| Putnam Investments LLC | 65,394 | $3.94M | 0.01% | +50,638+343.2% | Added |
| Silverarc Capital Management, LLC | 71,706 | $4.32M | 1.49% | −38,294−34.8% | Reduced |
| DCF Advisers, LLC | 74,100 | $4.46M | 3.45% | +6,100+9.0% | Added |
| Paradigm Biocapital Advisors LP | 75,000 | $4.52M | 0.53% | −160,826−68.2% | Reduced |
| EAM Global Investors LLC | 76,653 | $4.62M | 1.19% | 00.0% | Unchanged |
| Hillsdale Investment Management Inc. | 77,500 | $4.67M | 0.39% | +77,500 | New |
| SG Americas Securities, LLC | 78,772 | $4.75M | 0.07% | −56,816−41.9% | Reduced |
| Swiss National Bank | 79,300 | $4.78M | 0.00% | +2,100+2.7% | Added |
| Barclays PLC | 79,339 | $4.78M | 0.00% | +11,277+16.6% | Added |
| TD Asset Management Inc | 81,513 | $4.91M | 0.01% | +12,974+18.9% | Added |
| UBS Group AG | 91,069 | $5.49M | 0.00% | +84,920+1,381.0% | Added |
| Atika Capital Management LLC | 91,178 | $5.49M | 0.84% | +91,178 | New |
| Sectoral Asset Management Inc | 115,200 | $6.94M | 1.34% | +115,200 | New |
| Bank of America Corp | 121,671 | $7.33M | 0.00% | +38,574+46.4% | Added |
| Woodline Partners LP | 123,623 | $7.45M | 0.10% | +123,623 | New |
| Ensign Peak Advisors, Inc | 125,422 | $7.56M | 0.02% | +63,665+103.1% | Added |
| Birchview Capital, LP | 127,195 | $7.66M | 5.41% | +8,250+6.9% | Added |
| Frazier Life Sciences Management, L.P. | 127,900 | $7.71M | 0.48% | +127,900 | New |
| Bank of New York Mellon Corp | 136,997 | $8.25M | 0.00% | −3,195−2.3% | Reduced |
| Pinnacle Associates Ltd | 137,571 | $8.29M | 0.18% | −2,525−1.8% | Reduced |
| Rafferty Asset Management, LLC | 138,353 | $8.34M | 0.07% | +31,687+29.7% | Added |
| Morgan Stanley | 180,403 | $10.9M | 0.00% | +13,904+8.4% | Added |
| Granahan Investment Management Inc | 199,926 | $12.0M | 0.37% | +58,818+41.7% | Added |
| Two Sigma Investments, LP | 203,435 | $12.3M | 0.04% | +67,750+49.9% | Added |
| Suvretta Capital Management, LLC | 206,448 | $12.4M | 0.52% | −110,083−34.8% | Reduced |
| Millennium Management LLC | 213,610 | $12.9M | 0.01% | +84,173+65.0% | Added |
| Goldman Sachs Group Inc | 216,055 | $13.0M | 0.00% | −50,482−18.9% | Reduced |
| UBS Asset Management Americas Inc | 228,368 | $13.8M | 0.01% | −14,642−6.0% | Reduced |
| Perceptive Advisors LLC | 237,646 | $14.3M | 0.41% | +7,646+3.3% | Added |
| Boxer Capital, LLC | 300,000 | $18.1M | 0.97% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 300,850 | $18.1M | 0.01% | +15,108+5.3% | Added |
| Point72 Asset Management, L.P. | 311,500 | $18.8M | 0.07% | +143,100+85.0% | Added |
| Finepoint Capital LP | 322,900 | $19.5M | 6.29% | +17,500+5.7% | Added |
| Two Sigma Advisers, LP | 327,000 | $19.7M | 0.06% | −8,000−2.4% | Reduced |
| Prosight Management, LP | 330,000 | $19.9M | 11.12% | +8,907+2.8% | Added |
| Northern Trust Corp | 361,585 | $21.8M | 0.00% | +14,437+4.2% | Added |
| Maple Rock Capital Partners Inc. | 399,414 | $24.1M | 3.55% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 404,551 | $24.4M | 0.00% | +122,369+43.4% | Added |
| Eventide Asset Management, LLC | 438,732 | $26.4M | 0.52% | +208,732+90.8% | Added |
| Renaissance Technologies LLC | 474,900 | $28.6M | 0.04% | −162,000−25.4% | Reduced |
| Nuveen Asset Management, LLC | 572,790 | $34.5M | 0.01% | +82,338+16.8% | Added |
| Geode Capital Management, LLC | 715,601 | $43.1M | 0.01% | +79,877+12.6% | Added |
| Rock Springs Capital Management LP | 753,462 | $45.4M | 1.09% | +75,000+11.1% | Added |
| Vanguard Group Inc | 870,134 | $52.4M | 0.00% | +62,174+7.7% | Added |
| PFM Health Sciences, LP | 875,464 | $52.7M | 2.23% | +35,226+4.2% | Added |
| T. Rowe Price Investment Management, Inc. | 927,959 | $55.9M | 0.04% | +79,997+9.4% | Added |
| Dimensional Fund Advisors LP | 1,320,501 | $79.6M | 0.03% | −163,404−11.0% | Reduced |
| Janus Henderson Group PLC | 1,432,323 | $86.3M | 0.06% | +1,279,375+836.5% | Added |
| First Light Asset Management, LLC | 1,535,599 | $92.5M | 8.59% | −3,079−0.2% | Reduced |
| Palo Alto Investors LP | 1,658,577 | $99.9M | 8.52% | +8,800+0.5% | Added |
| Wellington Management Group LLP | 1,764,893 | $106.3M | 0.02% | +1,333,384+309.0% | Added |
| State Street Corp | 2,051,960 | $123.6M | 0.01% | +170,166+9.0% | Added |
| Avidity Partners Management LP | 2,953,000 | $177.9M | 4.16% | +986,000+50.1% | Added |
| Price T Rowe Associates Inc | 3,205,903 | $193.2M | 0.03% | +223,962+7.5% | Added |
| BlackRock Inc. | 3,485,068 | $210.0M | 0.01% | +346,324+11.0% | Added |
| FMR LLC | 3,947,272 | $237.8M | 0.02% | +784,854+24.8% | Added |