PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 190 filers reported holding PROTHENA CORP PLC in Q3 2023. The put-call ratio across all filers is 1.91 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $7,567,530 | -7.3% | 156,840 | +31.2% | 0.04% | -4.3% |
| Q2 2023 | $8,164,786 | +18.9% | 119,578 | -15.6% | 0.05% | -2.1% |
| Q1 2023 | $6,867,666 | -17.6% | 141,689 | +2.4% | 0.05% | -32.9% |
| Q4 2022 | $8,335,768 | +28.9% | 138,353 | +29.7% | 0.07% | +1.4% |
| Q3 2022 | $6,467,000 | +192.4% | 106,666 | +30.9% | 0.07% | +245.0% |
| Q2 2022 | $2,212,000 | -57.9% | 81,472 | -43.2% | 0.02% | -35.5% |
| Q1 2022 | $5,250,000 | -11.9% | 143,547 | +19.0% | 0.03% | 0.0% |
| Q4 2021 | $5,961,000 | +105.1% | 120,668 | +195.8% | 0.03% | +55.0% |
| Q3 2021 | $2,906,000 | +65.4% | 40,797 | +19.4% | 0.02% | +81.8% |
| Q2 2021 | $1,757,000 | +70.3% | 34,176 | -16.8% | 0.01% | +57.1% |
| Q1 2021 | $1,032,000 | +348.7% | 41,078 | +78.5% | 0.01% | +133.3% |
| Q3 2020 | $230,000 | +91.7% | 23,019 | +99.9% | 0.00% | +50.0% |
| Q2 2020 | $120,000 | -39.4% | 11,517 | -7.7% | 0.00% | -33.3% |
| Q4 2019 | $198,000 | -35.1% | 12,482 | -68.0% | 0.00% | -40.0% |
| Q3 2019 | $305,000 | -40.7% | 38,948 | -20.0% | 0.01% | -44.4% |
| Q2 2019 | $514,000 | -22.8% | 48,656 | -11.3% | 0.01% | -18.2% |
| Q1 2019 | $666,000 | – | 54,881 | – | 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% |