PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 189 filers reported holding PROTHENA CORP PLC in Q1 2023. The put-call ratio across all filers is 0.56 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $181 | -99.7% | 3 | -99.7% | 0.00% | -100.0% |
| Q3 2022 | $60,000 | +122.2% | 995 | 0.0% | 0.00% | +200.0% |
| Q2 2022 | $27,000 | -25.0% | 995 | -0.3% | 0.00% | 0.0% |
| Q1 2022 | $36,000 | -26.5% | 998 | +0.3% | 0.00% | -50.0% |
| Q4 2021 | $49,000 | -31.0% | 995 | 0.0% | 0.00% | -33.3% |
| Q3 2021 | $71,000 | -13.4% | 995 | -37.6% | 0.00% | 0.0% |
| Q2 2021 | $82,000 | +228.0% | 1,595 | +60.3% | 0.00% | +200.0% |
| Q1 2021 | $25,000 | +108.3% | 995 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $12,000 | +9.1% | 995 | -10.2% | 0.00% | 0.0% |
| Q3 2020 | $11,000 | 0.0% | 1,108 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $11,000 | +1000.0% | 1,108 | +880.5% | 0.00% | – |
| Q1 2020 | $1,000 | -50.0% | 113 | 0.0% | 0.00% | – |
| Q4 2019 | $2,000 | +100.0% | 113 | 0.0% | 0.00% | – |
| Q3 2019 | $1,000 | -92.9% | 113 | -69.9% | 0.00% | -100.0% |
| Q1 2018 | $14,000 | 0.0% | 375 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $14,000 | -33.3% | 375 | 0.0% | 0.00% | -50.0% |
| Q3 2017 | $21,000 | -8.7% | 375 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $23,000 | -42.5% | 375 | -50.0% | 0.00% | 0.0% |
| Q1 2017 | $40,000 | +122.2% | 750 | +100.0% | 0.00% | 0.0% |
| Q4 2016 | $18,000 | – | 375 | – | 0.00% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | $557,443,000 | 17.76% |
| Prosight Management, LP | 441,000 | $21,785,000 | 13.04% |
| First Light Asset Management, LLC | 1,622,941 | $80,173,000 | 5.74% |
| Palo Alto Investors LP | 1,685,282 | $83,253,000 | 5.32% |
| Birchview Capital, LP | 40,247 | $1,988,000 | 1.28% |
| DCF Advisers, LLC | 60,000 | $2,964,000 | 1.20% |
| HighVista Strategies LLC | 28,078 | $1,387,000 | 1.10% |
| APOGEM CAPITAL LLC | 33,212 | $1,641,000 | 1.08% |
| Redmile Group, LLC | 765,675 | $37,824,000 | 0.86% |
| Rock Springs Capital Management LP | 647,730 | $31,998,000 | 0.74% |