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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $9 | -30.8% | 195 | 0.0% | 0.00% | – |
| Q2 2023 | $13 | +44.4% | 195 | 0.0% | 0.00% | – |
| Q1 2023 | $9 | -25.0% | 195 | 0.0% | 0.00% | – |
| Q4 2022 | $12 | -99.9% | 195 | +26.6% | 0.00% | – |
| Q3 2022 | $9,000 | +125.0% | 154 | 0.0% | 0.00% | – |
| Q2 2022 | $4,000 | -33.3% | 154 | 0.0% | 0.00% | – |
| Q1 2022 | $6,000 | -25.0% | 154 | 0.0% | 0.00% | – |
| Q4 2021 | $8,000 | -27.3% | 154 | 0.0% | 0.00% | – |
| Q3 2021 | $11,000 | +120.0% | 154 | +75.0% | 0.00% | – |
| Q2 2021 | $5,000 | +150.0% | 88 | 0.0% | 0.00% | – |
| Q1 2021 | $2,000 | +100.0% | 88 | 0.0% | 0.00% | – |
| Q4 2020 | $1,000 | -96.9% | 88 | -58.5% | 0.00% | -100.0% |
| Q2 2020 | $32,000 | +1500.0% | 212 | 0.0% | 0.00% | – |
| Q1 2020 | $2,000 | -33.3% | 212 | 0.0% | 0.00% | – |
| Q4 2019 | $3,000 | +50.0% | 212 | 0.0% | 0.00% | – |
| Q3 2019 | $2,000 | 0.0% | 212 | 0.0% | 0.00% | – |
| Q2 2019 | $2,000 | -33.3% | 212 | 0.0% | 0.00% | – |
| Q1 2019 | $3,000 | 0.0% | 212 | 0.0% | 0.00% | – |
| Q3 2018 | $3,000 | 0.0% | 212 | 0.0% | 0.00% | – |
| Q2 2018 | $3,000 | -62.5% | 212 | 0.0% | 0.00% | – |
| Q1 2018 | $8,000 | – | 212 | – | 0.00% | – |
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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% |