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 | $434 | -100.0% | 9 | -100.0% | 0.00% | -100.0% |
| Q2 2023 | $2,106,848 | +4220.8% | 30,856 | +2967.2% | 0.01% | – |
| Q1 2023 | $48,761 | -22.3% | 1,006 | -3.5% | 0.00% | – |
| Q4 2022 | $62,781 | -99.7% | 1,042 | -99.7% | 0.00% | -100.0% |
| Q3 2022 | $21,229,000 | +17300.8% | 350,137 | +7675.6% | 0.06% | – |
| Q2 2022 | $122,000 | -96.7% | 4,503 | -95.6% | 0.00% | -100.0% |
| Q1 2022 | $3,702,000 | -38.0% | 101,229 | -16.3% | 0.01% | -27.3% |
| Q4 2021 | $5,974,000 | -32.7% | 120,929 | -3.0% | 0.01% | -35.3% |
| Q3 2021 | $8,880,000 | +295.5% | 124,667 | +185.5% | 0.02% | +325.0% |
| Q2 2021 | $2,245,000 | +112150.0% | 43,671 | +38207.9% | 0.00% | – |
| Q4 2019 | $2,000 | -33.3% | 114 | -68.7% | 0.00% | – |
| Q3 2019 | $3,000 | -40.0% | 364 | -27.8% | 0.00% | – |
| Q2 2019 | $5,000 | +150.0% | 504 | +203.6% | 0.00% | – |
| Q3 2018 | $2,000 | -50.0% | 166 | -37.4% | 0.00% | – |
| Q2 2018 | $4,000 | -98.3% | 265 | -92.7% | 0.00% | -100.0% |
| Q3 2017 | $235,000 | – | 3,627 | – | 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% |