PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 175 filers reported holding PROTHENA CORP PLC in Q1 2022. The put-call ratio across all filers is 0.32 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $682 | -29.1% | 14,000 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $962 | +46.0% | 14,000 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $659 | -20.1% | 14,000 | 0.0% | 0.00% | 0.0% |
| Q4 2022 | $825 | -99.9% | 14,000 | 0.0% | 0.00% | 0.0% |
| Q3 2022 | $830,000 | +125.5% | 14,000 | 0.0% | 0.00% | +100.0% |
| Q2 2022 | $368,000 | -28.0% | 14,000 | 0.0% | 0.00% | 0.0% |
| Q1 2022 | $511,000 | -12.2% | 14,000 | +10.2% | 0.00% | 0.0% |
| Q4 2021 | $582,000 | -32.8% | 12,700 | +2.8% | 0.00% | -50.0% |
| Q3 2021 | $866,000 | +47.8% | 12,350 | 0.0% | 0.00% | 0.0% |
| Q2 2021 | $586,000 | +113.9% | 12,350 | 0.0% | 0.00% | +100.0% |
| Q1 2021 | $274,000 | +82.7% | 12,350 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $150,000 | +26.1% | 12,350 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $119,000 | +20.2% | 12,350 | -2.4% | 0.00% | 0.0% |
| Q3 2019 | $99,000 | -61.2% | 12,650 | -50.0% | 0.00% | 0.0% |
| Q2 2019 | $255,000 | +6.2% | 25,300 | +63.8% | 0.00% | 0.0% |
| Q1 2019 | $240,000 | +83.2% | 15,450 | +22.1% | 0.00% | 0.0% |
| Q4 2018 | $131,000 | -45.4% | 12,650 | -18.1% | 0.00% | 0.0% |
| Q3 2018 | $240,000 | +3.0% | 15,450 | -2.5% | 0.00% | -50.0% |
| Q2 2018 | $233,000 | -59.8% | 15,850 | 0.0% | 0.00% | -50.0% |
| Q1 2018 | $579,000 | -54.7% | 15,850 | -28.4% | 0.00% | -60.0% |
| Q4 2017 | $1,278,000 | 0.0% | 22,150 | 0.0% | 0.01% | 0.0% |
| Q3 2017 | $1,278,000 | +6.0% | 22,150 | 0.0% | 0.01% | 0.0% |
| Q2 2017 | $1,206,000 | -1.8% | 22,150 | 0.0% | 0.01% | -9.1% |
| Q1 2017 | $1,228,000 | +4.6% | 22,150 | -7.5% | 0.01% | -8.3% |
| Q4 2016 | $1,174,000 | +15.4% | 23,950 | +36.9% | 0.01% | +9.1% |
| Q3 2016 | $1,017,000 | +58.2% | 17,500 | 0.0% | 0.01% | +57.1% |
| Q2 2016 | $643,000 | +3.4% | 17,500 | +13.3% | 0.01% | 0.0% |
| Q1 2016 | $622,000 | -44.1% | 15,450 | -3.1% | 0.01% | -46.2% |
| Q4 2015 | $1,113,000 | +55.9% | 15,950 | +1.3% | 0.01% | +44.4% |
| Q3 2015 | $714,000 | -9.0% | 15,750 | +5.7% | 0.01% | 0.0% |
| Q2 2015 | $785,000 | +60.9% | 14,900 | +16.4% | 0.01% | +50.0% |
| Q1 2015 | $488,000 | +60.5% | 12,800 | -12.9% | 0.01% | +50.0% |
| Q4 2014 | $304,000 | -14.4% | 14,700 | -8.1% | 0.00% | -20.0% |
| Q3 2014 | $355,000 | +25.0% | 16,000 | +27.0% | 0.01% | +25.0% |
| Q2 2014 | $284,000 | -42.0% | 12,600 | -1.6% | 0.00% | -50.0% |
| Q1 2014 | $490,000 | +16233.3% | 12,800 | +5061.3% | 0.01% | – |
| Q2 2013 | $3,000 | – | 248 | – | 0.00% | – |
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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% |