PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 140 filers reported holding PROTHENA CORP PLC in Q4 2020. The put-call ratio across all filers is 0.56 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,197,750 | -28.4% | 87,000 | +1.3% | 0.00% | -25.0% |
| Q2 2023 | $5,865,252 | +65.5% | 85,900 | +17.5% | 0.00% | +100.0% |
| Q1 2023 | $3,543,157 | -25.8% | 73,100 | -7.8% | 0.00% | -33.3% |
| Q4 2022 | $4,777,825 | +2.1% | 79,300 | +2.7% | 0.00% | 0.0% |
| Q3 2022 | $4,681,000 | +123.3% | 77,200 | 0.0% | 0.00% | +200.0% |
| Q2 2022 | $2,096,000 | -25.8% | 77,200 | 0.0% | 0.00% | -50.0% |
| Q1 2022 | $2,823,000 | -17.6% | 77,200 | +11.2% | 0.00% | 0.0% |
| Q4 2021 | $3,428,000 | -29.5% | 69,400 | +1.6% | 0.00% | -33.3% |
| Q3 2021 | $4,865,000 | +53.6% | 68,300 | +10.9% | 0.00% | +50.0% |
| Q2 2021 | $3,167,000 | +112.6% | 61,600 | +3.9% | 0.00% | +100.0% |
| Q1 2021 | $1,490,000 | +114.4% | 59,300 | +2.4% | 0.00% | – |
| Q4 2020 | $695,000 | +20.2% | 57,900 | 0.0% | 0.00% | – |
| Q3 2020 | $578,000 | -4.6% | 57,900 | 0.0% | 0.00% | -100.0% |
| Q2 2020 | $606,000 | -26.8% | 57,900 | -25.2% | 0.00% | 0.0% |
| Q1 2020 | $828,000 | -31.5% | 77,400 | +1.3% | 0.00% | 0.0% |
| Q4 2019 | $1,209,000 | +107.7% | 76,400 | +3.0% | 0.00% | 0.0% |
| Q3 2019 | $582,000 | -25.8% | 74,200 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $784,000 | -11.0% | 74,200 | +2.2% | 0.00% | 0.0% |
| Q1 2019 | $881,000 | +21.5% | 72,600 | +3.1% | 0.00% | 0.0% |
| Q4 2018 | $725,000 | -16.6% | 70,400 | +6.0% | 0.00% | 0.0% |
| Q3 2018 | $869,000 | -10.2% | 66,400 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $968,000 | -60.3% | 66,400 | 0.0% | 0.00% | -66.7% |
| Q1 2018 | $2,438,000 | -2.0% | 66,400 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $2,489,000 | -39.6% | 66,400 | +4.4% | 0.00% | -40.0% |
| Q3 2017 | $4,119,000 | +22.2% | 63,600 | +2.1% | 0.01% | +25.0% |
| Q2 2017 | $3,372,000 | -3.0% | 62,300 | 0.0% | 0.00% | 0.0% |
| Q1 2017 | $3,476,000 | +48.7% | 62,300 | +31.2% | 0.00% | 0.0% |
| Q4 2016 | $2,337,000 | -18.0% | 47,500 | 0.0% | 0.00% | -20.0% |
| Q3 2016 | $2,849,000 | +63.3% | 47,500 | -4.8% | 0.01% | +66.7% |
| Q2 2016 | $1,745,000 | -10.5% | 49,900 | +1.8% | 0.00% | -25.0% |
| Q1 2016 | $1,950,000 | -33.4% | 49,000 | +14.0% | 0.00% | -42.9% |
| Q4 2015 | $2,929,000 | +50.2% | 43,000 | 0.0% | 0.01% | +40.0% |
| Q3 2015 | $1,950,000 | -0.8% | 43,000 | +15.3% | 0.01% | 0.0% |
| Q2 2015 | $1,965,000 | +53.8% | 37,300 | +11.3% | 0.01% | +66.7% |
| Q1 2015 | $1,278,000 | +83.9% | 33,500 | 0.0% | 0.00% | 0.0% |
| Q4 2014 | $695,000 | – | 33,500 | – | 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% |