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 2022
Institutional positions in Prothena Corp Public Ltd Co as of Sep 30, 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
- 183
- +19 vs. Q2 2022
- Shares held
- 44.4M
- −101.3K (−0.2%) vs. Q2 2022
- Total value
- $2.69B
- +$1.48B (+122.5%) vs. Q2 2022
- New holders
- 39
- 51 more added
- Sold out
- 20
- 53 more reduced
3 institutions that held it in Q2 2022 haven't filed for Q3 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2022
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q2 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 27,390 | $1.66M | 0.00% | +13,595+98.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 27,556 | $1.67M | 0.01% | +11,526+71.9% | Added |
| Credit Suisse AG | 31,278 | $1.90M | 0.00% | +3,554+12.8% | Added |
| Monarch Partners Asset Management LLC | 33,360 | $2.02M | 0.61% | +33,360 | New |
| Ameriprise Financial Inc | 34,333 | $2.08M | 0.00% | +9,124+36.2% | Added |
| Norges Bank | 35,400 | $2.15M | 0.00% | −41,400−53.9% | Reduced |
| New York State Common Retirement Fund | 36,391 | $2.21M | 0.00% | +1,666+4.8% | Added |
| BNP Paribas Arbitrage, SA | 38,407 | $2.33M | 0.01% | +30,108+362.8% | Added |
| First Trust Advisors LP | 38,808 | $2.35M | 0.00% | −4,907−11.2% | Reduced |
| Occudo Quantitative Strategies LP | 38,889 | $2.36M | 0.18% | +38,889 | New |
| Prudential Financial Inc | 39,879 | $2.42M | 0.00% | −100.0% | Reduced |
| California State Teachers Retirement System | 42,203 | $2.56M | 0.00% | −968−2.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 44,790 | $2.72M | 0.02% | +44,790 | New |
| Alliancebernstein L.P. | 45,366 | $2.75M | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 46,891 | $2.84M | 0.00% | +3,586+8.3% | Added |
| Walleye Trading LLC | 48,295 | $2.93M | 0.10% | +48,295 | New |
| Platinum Investment Management Ltd | 48,914 | $2.97M | 0.12% | −11,598−19.2% | Reduced |
| State of Wisconsin Investment Board | 49,310 | $2.99M | 0.01% | +14,227+40.6% | Added |
| Man Group plc | 50,716 | $3.08M | 0.01% | – | – |
| AXA S.A. | 52,225 | $3.17M | 0.01% | +25,900+98.4% | Added |
| Manufacturers Life Insurance Company, The | 53,031 | $3.17M | 0.00% | −305−0.6% | Reduced |
| EAM Investors, LLC | 53,637 | $3.25M | 0.71% | +53,637 | New |
| RBF Capital, LLC | 54,362 | $3.30M | 0.28% | +9,000+19.8% | Added |
| Ensign Peak Advisors, Inc | 61,757 | $3.75M | 0.01% | +11,880+23.8% | Added |
| TD Asset Management Inc | 68,539 | $4.08M | 0.01% | −43,102−38.6% | Reduced |
| DCF Advisers, LLC | 68,000 | $4.12M | 3.04% | +144+0.2% | Added |
| Barclays PLC | 68,062 | $4.13M | 0.00% | +66,281+3,721.6% | Added |
| Guggenheim Capital LLC | 75,795 | $4.59M | 0.04% | −421−0.6% | Reduced |
| EAM Global Investors LLC | 76,653 | $4.65M | 1.24% | +76,653 | New |
| Swiss National Bank | 77,200 | $4.68M | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 83,097 | $5.04M | 0.00% | +17,753+27.2% | Added |
| Handelsbanken Fonder AB | 85,700 | $5.20M | 0.03% | −41,800−32.8% | Reduced |
| Citigroup Inc | 98,144 | $5.95M | 0.01% | +12,762+14.9% | Added |
| Susquehanna International Group, LLP | 98,706 | $5.98M | 0.01% | +66,725+208.6% | Added |
| D. E. Shaw & Co., Inc. | 105,230 | $6.38M | 0.01% | +44,034+72.0% | Added |
| Rafferty Asset Management, LLC | 106,666 | $6.47M | 0.07% | +25,194+30.9% | Added |
| Marshall Wace, LLP | 107,803 | $6.54M | 0.02% | −70,584−39.6% | Reduced |
| Silverarc Capital Management, LLC | 110,000 | $6.67M | 2.83% | +110,000 | New |
| Birchview Capital, LP | 118,945 | $7.21M | 5.08% | +16,397+16.0% | Added |
| Millennium Management LLC | 129,437 | $7.85M | 0.01% | −75,233−36.8% | Reduced |
| SG Americas Securities, LLC | 135,588 | $8.22M | 0.13% | −19,000−12.3% | Reduced |
| Two Sigma Investments, LP | 135,685 | $8.23M | 0.03% | −94,742−41.1% | Reduced |
| Pinnacle Associates Ltd | 140,096 | $8.49M | 0.19% | −4,330−3.0% | Reduced |
| Bank of New York Mellon Corp | 140,192 | $8.50M | 0.00% | +20,828+17.4% | Added |
| Granahan Investment Management Inc | 141,108 | $8.55M | 0.28% | −18,217−11.4% | Reduced |
| Janus Henderson Group PLC | 152,948 | $9.28M | 0.01% | −30,092−16.4% | Reduced |
| Morgan Stanley | 166,499 | $10.1M | 0.00% | −186,083−52.8% | Reduced |
| Point72 Asset Management, L.P. | 168,400 | $10.2M | 0.04% | +68,500+68.6% | Added |
| Sessa Capital IM, L.P. | 187,000 | $11.3M | 0.81% | 00.0% | Unchanged |
| Citadel Advisors LLC | 188,643 | $11.4M | 0.01% | +33,132+21.3% | Added |
| Perceptive Advisors LLC | 230,000 | $13.9M | 0.41% | +230,000 | New |
| Eventide Asset Management, LLC | 230,000 | $13.9M | 0.27% | +230,000 | New |
| Paradigm Biocapital Advisors LP | 235,826 | $14.3M | 2.01% | +235,826 | New |
| UBS Asset Management Americas Inc | 243,010 | $14.7M | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 266,537 | $16.2M | 0.00% | −3,647−1.3% | Reduced |
| JPMorgan Chase & Co | 282,182 | $17.1M | 0.00% | −4,397−1.5% | Reduced |
| Charles Schwab Investment Management Inc | 285,742 | $17.3M | 0.01% | +8,267+3.0% | Added |
| Boxer Capital, LLC | 300,000 | $18.2M | 1.02% | 00.0% | Unchanged |
| Finepoint Capital LP | 305,400 | $18.5M | 6.09% | −152,100−33.2% | Reduced |
| Suvretta Capital Management, LLC | 316,531 | $19.2M | 0.81% | +316,531 | New |
| Prosight Management, LP | 321,093 | $19.5M | 10.70% | −228,907−41.6% | Reduced |
| Two Sigma Advisers, LP | 335,000 | $20.3M | 0.06% | −112,700−25.2% | Reduced |
| Northern Trust Corp | 347,148 | $21.0M | 0.00% | −5,073−1.4% | Reduced |
| Federated Hermes, Inc. | 350,137 | $21.2M | 0.06% | +345,634+7,675.6% | Added |
| Maple Rock Capital Partners Inc. | 399,414 | $24.2M | 2.24% | +65,414+19.6% | Added |
| Wellington Management Group LLP | 431,509 | $26.2M | 0.01% | +338,055+361.7% | Added |
| Nuveen Asset Management, LLC | 490,452 | $29.7M | 0.01% | −232,720−32.2% | Reduced |
| Redmile Group, LLC | 525,575 | $31.9M | 1.24% | −210,600−28.6% | Reduced |
| Geode Capital Management, LLC | 635,724 | $38.5M | 0.01% | +4,044+0.6% | Added |
| Renaissance Technologies LLC | 636,900 | $38.6M | 0.05% | −49,100−7.2% | Reduced |
| Rock Springs Capital Management LP | 678,462 | $41.1M | 1.06% | 00.0% | Unchanged |
| Vanguard Group Inc | 807,960 | $49.0M | 0.00% | −21,116−2.5% | Reduced |
| PFM Health Sciences, LP | 840,238 | $50.9M | 1.95% | +495,124+143.5% | Added |
| T. Rowe Price Investment Management, Inc. | 847,962 | $51.4M | 0.04% | +847,962 | New |
| Dimensional Fund Advisors LP | 1,483,905 | $90.0M | 0.03% | −82,848−5.3% | Reduced |
| First Light Asset Management, LLC | 1,538,678 | $93.3M | 9.44% | −399,505−20.6% | Reduced |
| Palo Alto Investors LP | 1,649,777 | $100.0M | 7.91% | −31,700−1.9% | Reduced |
| State Street Corp | 1,881,794 | $114.1M | 0.01% | −364,279−16.2% | Reduced |
| Avidity Partners Management LP | 1,967,000 | $119.3M | 2.59% | +1,967,000 | New |
| Price T Rowe Associates Inc | 2,981,941 | $180.8M | 0.03% | −2,983,847−50.0% | Reduced |
| BlackRock Inc. | 3,138,744 | $190.3M | 0.01% | −332,556−9.6% | Reduced |
| FMR LLC | 3,162,418 | $191.7M | 0.02% | +237,020+8.1% | Added |
| EcoR1 Capital, LLC | 11,584,280 | $702.4M | 20.76% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −137,496−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −42,213−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −24,893−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −25,168−100.0% | Sold out |
| ETF Managers Group, LLC | 0 | $0 | 0.00% | −24,869−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −24,016−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −23,459−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −15,090−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −13,895−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −13,878−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −1,177−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −966−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −738−100.0% | Sold out |
| International Biotechnology Trust PLC | 0 | $0 | 0.00% | −407−100.0% | Sold out |
| Rockbridge Investment Management, LCC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Patriot Financial Group Insurance Agency, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Geneos Wealth Management Inc. | 0 | $0 | 0.00% | −26−100.0% | Sold out |