PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 175 filers reported holding PROTHENA CORP PLC in Q1 2022. The put-call ratio across all filers is 0.32 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $598,300 | -77.7% | 12,400 | -72.5% | 0.00% | -100.0% |
| Q3 2022 | $2,682,000 | +725.2% | 45,105 | +406.8% | 0.00% | – |
| Q1 2022 | $325,000 | -23.5% | 8,900 | 0.0% | 0.00% | -100.0% |
| Q4 2021 | $425,000 | +87.2% | 8,900 | +178.1% | 0.00% | – |
| Q3 2021 | $227,000 | +84.6% | 3,200 | -74.2% | 0.00% | – |
| Q3 2020 | $123,000 | -21.2% | 12,400 | -18.4% | 0.00% | – |
| Q2 2020 | $156,000 | +8.3% | 15,200 | +12.6% | 0.00% | – |
| Q1 2020 | $144,000 | -78.5% | 13,500 | -68.2% | 0.00% | -100.0% |
| Q4 2019 | $670,000 | +65.8% | 42,459 | +7.7% | 0.00% | +100.0% |
| Q4 2018 | $404,000 | -66.4% | 39,417 | -57.1% | 0.00% | -66.7% |
| Q3 2018 | $1,202,000 | +9.9% | 91,914 | +208.4% | 0.00% | +50.0% |
| Q2 2018 | $1,094,000 | 0.0% | 29,800 | 0.0% | 0.00% | 0.0% |
| Q1 2018 | $1,094,000 | – | 29,800 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | $557,443,000 | 17.76% |
| Prosight Management, LP | 441,000 | $21,785,000 | 13.04% |
| First Light Asset Management, LLC | 1,622,941 | $80,173,000 | 5.74% |
| Palo Alto Investors LP | 1,685,282 | $83,253,000 | 5.32% |
| Birchview Capital, LP | 40,247 | $1,988,000 | 1.28% |
| DCF Advisers, LLC | 60,000 | $2,964,000 | 1.20% |
| HighVista Strategies LLC | 28,078 | $1,387,000 | 1.10% |
| APOGEM CAPITAL LLC | 33,212 | $1,641,000 | 1.08% |
| Redmile Group, LLC | 765,675 | $37,824,000 | 0.86% |
| Rock Springs Capital Management LP | 647,730 | $31,998,000 | 0.74% |