PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 157 filers reported holding PROTHENA CORP PLC in Q2 2021. The put-call ratio across all filers is 0.47 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $5,448,052 | -29.6% | 112,913 | -0.4% | 0.02% | -26.9% |
| Q2 2023 | $7,737,216 | +742.3% | 113,316 | +497.9% | 0.03% | +766.7% |
| Q1 2023 | $918,603 | -23.2% | 18,952 | -4.5% | 0.00% | -25.0% |
| Q4 2022 | $1,196,083 | -81.1% | 19,852 | -81.0% | 0.00% | -66.7% |
| Q3 2022 | $6,332,402 | +342.9% | 104,450 | +98.4% | 0.01% | +300.0% |
| Q2 2022 | $1,429,724 | -44.3% | 52,650 | -25.0% | 0.00% | -25.0% |
| Q1 2022 | $2,567,607 | -68.6% | 70,200 | -55.9% | 0.00% | -66.7% |
| Q2 2021 | $8,190,000 | +94.0% | 159,320 | -5.2% | 0.01% | -7.7% |
| Q1 2021 | $4,221,000 | +99.9% | 168,049 | -4.4% | 0.01% | +85.7% |
| Q4 2020 | $2,112,000 | +20.2% | 175,849 | 0.0% | 0.01% | +16.7% |
| Q3 2020 | $1,757,000 | -52.2% | 175,849 | -50.0% | 0.01% | -14.3% |
| Q2 2020 | $3,678,000 | -5.5% | 351,698 | -3.4% | 0.01% | -30.0% |
| Q1 2020 | $3,894,000 | -16.1% | 364,018 | +24.1% | 0.01% | +11.1% |
| Q4 2019 | $4,644,000 | +101.9% | 293,418 | 0.0% | 0.01% | +80.0% |
| Q3 2019 | $2,300,000 | +5.2% | 293,418 | +41.9% | 0.01% | +25.0% |
| Q2 2019 | $2,186,000 | +556.5% | 206,846 | +653.3% | 0.00% | +300.0% |
| Q1 2019 | $333,000 | +17.7% | 27,460 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $283,000 | -21.2% | 27,460 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $359,000 | -10.2% | 27,460 | 0.0% | 0.00% | -50.0% |
| Q2 2018 | $400,000 | -92.4% | 27,460 | -80.8% | 0.00% | -90.5% |
| Q1 2018 | $5,245,000 | -3.0% | 142,881 | -1.0% | 0.02% | 0.0% |
| Q4 2017 | $5,410,000 | -42.2% | 144,318 | -0.1% | 0.02% | -47.5% |
| Q3 2017 | $9,357,000 | +18.0% | 144,465 | -1.4% | 0.04% | +11.1% |
| Q2 2017 | $7,927,000 | -6.5% | 146,477 | -3.6% | 0.04% | -5.3% |
| Q1 2017 | $8,476,000 | +10.1% | 151,929 | -2.9% | 0.04% | +5.6% |
| Q4 2016 | $7,700,000 | -16.4% | 156,542 | +1.9% | 0.04% | -10.0% |
| Q3 2016 | $9,210,000 | +43.3% | 153,571 | -16.4% | 0.04% | +37.9% |
| Q2 2016 | $6,425,000 | -18.4% | 183,776 | -3.9% | 0.03% | -17.1% |
| Q1 2016 | $7,873,000 | -42.0% | 191,285 | -4.1% | 0.04% | -40.7% |
| Q4 2015 | $13,581,000 | +64.7% | 199,398 | +9.6% | 0.06% | +73.5% |
| Q3 2015 | $8,246,000 | +206.0% | 181,876 | +255.5% | 0.03% | +209.1% |
| Q2 2015 | $2,695,000 | – | 51,162 | – | 0.01% | – |
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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% |