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 | $29,639,879 | -42.4% | 614,298 | -18.5% | 0.79% | -35.1% |
| Q2 2023 | $51,446,385 | +40.9% | 753,462 | 0.0% | 1.22% | +40.5% |
| Q1 2023 | $36,520,303 | -19.6% | 753,462 | 0.0% | 0.87% | -20.2% |
| Q4 2022 | $45,396,086 | +10.4% | 753,462 | +11.1% | 1.09% | +2.8% |
| Q3 2022 | $41,135,000 | +123.3% | 678,462 | 0.0% | 1.06% | +98.1% |
| Q2 2022 | $18,420,000 | -24.1% | 678,462 | +2.3% | 0.54% | -12.3% |
| Q1 2022 | $24,265,000 | -24.2% | 663,530 | +2.4% | 0.61% | -17.3% |
| Q4 2021 | $31,998,000 | -36.8% | 647,730 | -8.8% | 0.74% | -30.5% |
| Q3 2021 | $50,604,000 | +3.6% | 710,430 | -25.2% | 1.06% | +10.3% |
| Q2 2021 | $48,844,000 | +68.1% | 950,091 | -17.9% | 0.96% | +52.2% |
| Q1 2021 | $29,061,000 | +112.0% | 1,156,900 | +1.4% | 0.63% | +117.9% |
| Q4 2020 | $13,705,000 | +33.8% | 1,141,100 | +11.3% | 0.29% | +11.9% |
| Q3 2020 | $10,242,000 | -1.0% | 1,025,207 | +3.6% | 0.26% | -8.5% |
| Q2 2020 | $10,347,000 | +93.4% | 989,218 | +97.8% | 0.28% | +28.5% |
| Q1 2020 | $5,350,000 | +331.8% | 500,000 | +488.2% | 0.22% | +360.4% |
| Q2 2018 | $1,239,000 | -92.6% | 85,000 | -81.3% | 0.05% | -93.2% |
| Q1 2018 | $16,648,000 | +32.6% | 453,500 | +35.4% | 0.71% | +24.6% |
| Q4 2017 | $12,559,000 | -37.3% | 335,000 | +8.2% | 0.57% | -38.4% |
| Q3 2017 | $20,046,000 | +19.7% | 309,500 | 0.0% | 0.92% | +9.3% |
| Q2 2017 | $16,750,000 | -3.0% | 309,500 | 0.0% | 0.85% | -15.1% |
| Q1 2017 | $17,267,000 | +13.4% | 309,500 | 0.0% | 1.00% | -2.3% |
| Q4 2016 | $15,224,000 | -17.6% | 309,500 | +0.5% | 1.02% | -12.0% |
| Q3 2016 | $18,471,000 | +71.5% | 308,000 | 0.0% | 1.16% | +45.3% |
| Q2 2016 | $10,768,000 | -15.1% | 308,000 | 0.0% | 0.80% | -25.0% |
| Q1 2016 | $12,677,000 | -24.9% | 308,000 | +24.2% | 1.06% | -17.0% |
| Q4 2015 | $16,891,000 | +50.2% | 248,000 | 0.0% | 1.28% | +40.2% |
| Q3 2015 | $11,244,000 | -14.6% | 248,000 | -0.8% | 0.91% | -5.0% |
| Q2 2015 | $13,168,000 | +45.4% | 250,000 | +5.3% | 0.96% | +13.5% |
| Q1 2015 | $9,058,000 | +115.5% | 237,500 | +17.3% | 0.85% | +72.2% |
| Q4 2014 | $4,204,000 | -6.3% | 202,500 | 0.0% | 0.49% | -29.1% |
| Q3 2014 | $4,487,000 | +32.6% | 202,500 | +35.0% | 0.69% | +14.3% |
| Q2 2014 | $3,383,000 | +35.9% | 150,000 | +130.8% | 0.61% | +5.7% |
| Q1 2014 | $2,490,000 | – | 65,000 | – | 0.57% | – |
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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% |