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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,494 | -29.8% | 30,973 | -0.6% | 0.00% | -33.3% |
| Q2 2023 | $2,129 | +39.2% | 31,175 | -1.3% | 0.00% | +50.0% |
| Q1 2023 | $1,530 | -29.0% | 31,575 | -11.8% | 0.00% | -33.3% |
| Q4 2022 | $2,156 | -99.9% | 35,780 | -1.7% | 0.00% | 0.0% |
| Q3 2022 | $2,206,000 | +133.9% | 36,391 | +4.8% | 0.00% | +200.0% |
| Q2 2022 | $943,000 | -35.6% | 34,725 | -13.3% | 0.00% | -50.0% |
| Q1 2022 | $1,465,000 | -3.7% | 40,073 | +30.2% | 0.00% | 0.0% |
| Q4 2021 | $1,521,000 | -19.0% | 30,781 | +16.8% | 0.00% | 0.0% |
| Q3 2021 | $1,878,000 | +21.3% | 26,360 | -12.5% | 0.00% | 0.0% |
| Q2 2021 | $1,548,000 | +121.8% | 30,110 | +8.4% | 0.00% | +100.0% |
| Q1 2021 | $698,000 | +109.0% | 27,769 | 0.0% | 0.00% | – |
| Q4 2020 | $334,000 | +20.6% | 27,769 | 0.0% | 0.00% | – |
| Q3 2020 | $277,000 | -4.5% | 27,769 | 0.0% | 0.00% | – |
| Q2 2020 | $290,000 | -28.6% | 27,769 | -26.9% | 0.00% | -100.0% |
| Q1 2020 | $406,000 | -32.4% | 37,969 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $601,000 | +101.7% | 37,969 | 0.0% | 0.00% | – |
| Q3 2019 | $298,000 | -32.7% | 37,969 | -9.4% | 0.00% | -100.0% |
| Q2 2019 | $443,000 | -12.3% | 41,900 | +0.7% | 0.00% | 0.0% |
| Q1 2019 | $505,000 | +18.0% | 41,600 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $428,000 | -21.3% | 41,600 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $544,000 | -10.4% | 41,600 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $607,000 | -84.5% | 41,600 | -60.9% | 0.00% | -80.0% |
| Q1 2018 | $3,906,000 | -2.1% | 106,398 | 0.0% | 0.01% | 0.0% |
| Q4 2017 | $3,989,000 | -35.1% | 106,398 | +12.1% | 0.01% | -37.5% |
| Q3 2017 | $6,147,000 | +173.1% | 94,900 | +128.1% | 0.01% | +166.7% |
| Q2 2017 | $2,251,000 | +8.7% | 41,600 | +12.1% | 0.00% | 0.0% |
| Q1 2017 | $2,070,000 | +13.4% | 37,101 | +0.0% | 0.00% | 0.0% |
| Q4 2016 | $1,825,000 | -18.0% | 37,100 | 0.0% | 0.00% | 0.0% |
| Q3 2016 | $2,225,000 | +85.0% | 37,100 | +7.8% | 0.00% | +50.0% |
| Q2 2016 | $1,203,000 | -15.0% | 34,400 | 0.0% | 0.00% | 0.0% |
| Q1 2016 | $1,416,000 | -32.9% | 34,400 | +11.0% | 0.00% | -33.3% |
| Q4 2015 | $2,111,000 | +56.3% | 31,000 | +4.0% | 0.00% | +50.0% |
| Q3 2015 | $1,351,000 | -20.7% | 29,800 | -7.9% | 0.00% | 0.0% |
| Q2 2015 | $1,704,000 | – | 32,360 | – | 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% |