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 | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $276,521 | -82.9% | 5,705 | -78.8% | 0.00% | -100.0% |
| Q4 2022 | $1,618,074 | -74.6% | 26,856 | -74.5% | 0.00% | -75.0% |
| Q3 2022 | $6,380,000 | +215.1% | 105,230 | +41.1% | 0.01% | +300.0% |
| Q2 2022 | $2,025,000 | -44.9% | 74,596 | -25.8% | 0.00% | -33.3% |
| Q1 2022 | $3,677,000 | -40.7% | 100,553 | -19.9% | 0.00% | -50.0% |
| Q4 2021 | $6,198,000 | +33.2% | 125,465 | +92.1% | 0.01% | +50.0% |
| Q3 2021 | $4,652,000 | +346.0% | 65,321 | +221.9% | 0.00% | +300.0% |
| Q2 2021 | $1,043,000 | -30.0% | 20,295 | -65.8% | 0.00% | 0.0% |
| Q1 2021 | $1,490,000 | -41.9% | 59,298 | -72.2% | 0.00% | -50.0% |
| Q4 2020 | $2,565,000 | -12.8% | 213,609 | -27.5% | 0.00% | -33.3% |
| Q3 2020 | $2,942,000 | -19.5% | 294,468 | -15.7% | 0.00% | -25.0% |
| Q2 2020 | $3,655,000 | +0.9% | 349,377 | +3.2% | 0.00% | -33.3% |
| Q1 2020 | $3,622,000 | -33.6% | 338,449 | -1.8% | 0.01% | 0.0% |
| Q4 2019 | $5,456,000 | +96.7% | 344,612 | -2.6% | 0.01% | +100.0% |
| Q3 2019 | $2,774,000 | -38.7% | 353,807 | -17.4% | 0.00% | -50.0% |
| Q2 2019 | $4,527,000 | -28.1% | 428,230 | -17.5% | 0.01% | -25.0% |
| Q1 2019 | $6,293,000 | +484.3% | 518,801 | +396.1% | 0.01% | +300.0% |
| Q4 2018 | $1,077,000 | +96.9% | 104,578 | +150.2% | 0.00% | +100.0% |
| Q3 2018 | $547,000 | -33.7% | 41,799 | -26.1% | 0.00% | 0.0% |
| Q2 2018 | $825,000 | -64.3% | 56,586 | -10.1% | 0.00% | -66.7% |
| Q1 2018 | $2,310,000 | +945.2% | 62,944 | +966.8% | 0.00% | – |
| Q4 2017 | $221,000 | -51.5% | 5,900 | -16.2% | 0.00% | -100.0% |
| Q3 2017 | $456,000 | +7.5% | 7,042 | -10.2% | 0.00% | 0.0% |
| Q2 2017 | $424,000 | -89.0% | 7,839 | -86.2% | 0.00% | -83.3% |
| Q4 2015 | $3,855,000 | +74.0% | 56,600 | +15.8% | 0.01% | +100.0% |
| Q3 2015 | $2,215,000 | +157.0% | 48,868 | +198.6% | 0.00% | +200.0% |
| Q2 2015 | $862,000 | -49.9% | 16,368 | -63.7% | 0.00% | -66.7% |
| Q1 2015 | $1,720,000 | +29.1% | 45,099 | -29.7% | 0.00% | +50.0% |
| Q4 2014 | $1,332,000 | -35.3% | 64,177 | -29.7% | 0.00% | -33.3% |
| Q2 2014 | $2,060,000 | – | 91,337 | – | 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% |