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 | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $25,536 | +40.9% | 374 | 0.0% | 0.00% | – |
| Q1 2023 | $18,127 | -20.2% | 374 | -0.8% | 0.00% | – |
| Q4 2022 | $22,714 | +2171.4% | 377 | +280.8% | 0.00% | – |
| Q4 2019 | $1,000 | – | 99 | 0.0% | 0.00% | – |
| Q3 2019 | $0 | -100.0% | 99 | 0.0% | 0.00% | – |
| Q2 2019 | $1,000 | 0.0% | 99 | 0.0% | 0.00% | – |
| Q1 2019 | $1,000 | 0.0% | 99 | 0.0% | 0.00% | – |
| Q4 2018 | $1,000 | -50.0% | 99 | -50.5% | 0.00% | – |
| Q3 2018 | $2,000 | -100.0% | 200 | -99.8% | 0.00% | -100.0% |
| Q4 2017 | $4,018,000 | +24.1% | 107,200 | +114.4% | 0.02% | +15.8% |
| Q3 2017 | $3,238,000 | +19.7% | 50,000 | 0.0% | 0.02% | +18.8% |
| Q2 2017 | $2,706,000 | -3.0% | 50,000 | 0.0% | 0.02% | -5.9% |
| Q1 2017 | $2,789,000 | +13.4% | 50,000 | 0.0% | 0.02% | +13.3% |
| Q4 2016 | $2,459,000 | – | 50,000 | – | 0.02% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $558,941,510 | 18.85% |
| Finepoint Capital LP | 349,300 | $16,853,725 | 8.39% |
| Palo Alto Investors LP | 1,657,458 | $79,972,349 | 7.57% |
| Birchview Capital, LP | 169,574 | $8,181,946 | 6.96% |
| First Light Asset Management, LLC | 1,494,039 | $72,087,382 | 6.85% |
| DCF Advisers, LLC | 82,950 | $4,002,338 | 2.18% |
| Prosight Management, LP | 126,202 | $6,089,247 | 1.93% |
| PFM Health Sciences, LP | 836,571 | $40,364,551 | 1.90% |
| SECTORAL ASSET MANAGEMENT INC | 172,407 | $8,318,638 | 1.62% |
| Boxer Capital, LLC | 625,000 | $30,156,250 | 1.60% |