PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 193 filers reported holding PROTHENA CORP PLC in Q3 2021. The put-call ratio across all filers is 0.62 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $513,752 | +0.5% | 8,527 | +1.2% | 0.12% | +6.0% |
| Q3 2022 | $511,000 | -14.5% | 8,423 | +0.3% | 0.12% | -40.5% |
| Q3 2021 | $598,000 | +54.1% | 8,400 | -77.3% | 0.20% | -60.3% |
| Q2 2020 | $388,000 | +3.2% | 37,046 | -22.7% | 0.49% | +245.8% |
| Q3 2019 | $376,000 | +74.9% | 47,901 | +136.0% | 0.14% | +44.9% |
| Q2 2019 | $215,000 | – | 20,300 | – | 0.10% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $697,952,870 | 21.24% |
| Prosight Management, LP | 330,000 | $19,882,500 | 10.84% |
| First Light Asset Management, LLC | 1,535,599 | $92,519,840 | 8.59% |
| Palo Alto Investors LP | 1,658,577 | $99,929,264 | 8.52% |
| Finepoint Capital LP | 322,900 | $19,455 | 6.29% |
| Birchview Capital, LP | 127,195 | $7,663 | 5.41% |
| Avidity Partners Management LP | 2,953,000 | $177,918,250 | 3.85% |
| DCF Advisers, LLC | 74,100 | $4,464,525 | 3.02% |
| PFM Health Sciences, LP | 875,464 | $52,746,706 | 1.89% |
| SECTORAL ASSET MANAGEMENT INC | 115,200 | $6,940,800 | 1.34% |