PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 190 filers reported holding PROTHENA CORP PLC in Q3 2023. The put-call ratio across all filers is 1.91 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $4,610,929 | +566.3% | 66,767 | +168.2% | 0.00% | – |
| Q2 2022 | $692,000 | -61.6% | 24,893 | -47.6% | 0.00% | -100.0% |
| Q1 2022 | $1,800,000 | -20.9% | 47,546 | 0.0% | 0.00% | 0.0% |
| Q4 2021 | $2,276,000 | +46.3% | 47,546 | +120.9% | 0.00% | 0.0% |
| Q3 2021 | $1,556,000 | +2781.5% | 21,525 | +835.9% | 0.00% | – |
| Q1 2021 | $54,000 | -34.1% | 2,300 | -62.9% | 0.00% | – |
| Q4 2020 | $82,000 | +141.2% | 6,197 | +102.1% | 0.00% | – |
| Q3 2020 | $34,000 | -32.0% | 3,067 | -25.2% | 0.00% | – |
| Q2 2020 | $50,000 | +194.1% | 4,100 | +178.5% | 0.00% | – |
| Q1 2020 | $17,000 | -83.5% | 1,472 | -77.5% | 0.00% | – |
| Q4 2019 | $103,000 | +267.9% | 6,555 | +85.2% | 0.00% | – |
| Q3 2019 | $28,000 | -22.2% | 3,540 | +3.9% | 0.00% | – |
| Q2 2019 | $36,000 | +300.0% | 3,406 | +309.9% | 0.00% | – |
| Q4 2018 | $9,000 | +28.6% | 831 | +53.6% | 0.00% | – |
| Q3 2018 | $7,000 | -97.7% | 541 | -97.4% | 0.00% | – |
| Q2 2018 | $300,000 | +3650.0% | 20,549 | +8992.5% | 0.00% | – |
| Q1 2018 | $8,000 | -11.1% | 226 | -8.5% | 0.00% | – |
| Q4 2017 | $9,000 | -92.6% | 247 | -86.7% | 0.00% | – |
| Q3 2017 | $121,000 | +21.0% | 1,858 | 0.0% | 0.00% | – |
| Q2 2017 | $100,000 | +2.0% | 1,858 | +6.7% | 0.00% | – |
| Q1 2017 | $98,000 | -3.9% | 1,741 | 0.0% | 0.00% | – |
| Q4 2016 | $102,000 | +6.2% | 1,741 | +8.8% | 0.00% | – |
| Q3 2016 | $96,000 | +71.4% | 1,600 | 0.0% | 0.00% | – |
| Q2 2016 | $56,000 | -17.6% | 1,600 | -3.7% | 0.00% | – |
| Q1 2016 | $68,000 | -70.6% | 1,662 | -51.0% | 0.00% | – |
| Q4 2015 | $231,000 | +2787.5% | 3,394 | +1920.2% | 0.00% | – |
| Q3 2015 | $8,000 | -11.1% | 168 | 0.0% | 0.00% | – |
| Q2 2015 | $9,000 | -91.7% | 168 | -94.1% | 0.00% | – |
| Q1 2015 | $108,000 | +68.8% | 2,827 | -8.7% | 0.00% | – |
| Q4 2014 | $64,000 | +1.6% | 3,097 | +9.3% | 0.00% | – |
| Q3 2014 | $63,000 | +600.0% | 2,833 | +611.8% | 0.00% | – |
| Q2 2014 | $9,000 | +200.0% | 398 | +452.8% | 0.00% | – |
| Q1 2014 | $3,000 | +200.0% | 72 | +50.0% | 0.00% | – |
| Q4 2013 | $1,000 | 0.0% | 48 | 0.0% | 0.00% | – |
| Q3 2013 | $1,000 | 0.0% | 48 | 0.0% | 0.00% | – |
| Q2 2013 | $1,000 | – | 48 | – | 0.00% | – |
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% |