PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 140 filers reported holding PROTHENA CORP PLC in Q4 2020. The put-call ratio across all filers is 0.56 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $2,000 | +100.0% | 25 | 0.0% | 0.00% | – |
| Q2 2021 | $1,000 | -99.9% | 25 | -50.0% | 0.00% | – |
| Q1 2021 | $1,256,000 | – | 50 | +100.0% | 0.00% | – |
| Q4 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q3 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q2 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q1 2020 | $0 | -100.0% | 25 | -95.2% | 0.00% | – |
| Q4 2019 | $8,000 | +100.0% | 525 | 0.0% | 0.00% | – |
| Q3 2019 | $4,000 | -20.0% | 525 | +5.0% | 0.00% | – |
| Q2 2019 | $5,000 | -28.6% | 500 | 0.0% | 0.00% | – |
| Q3 2018 | $7,000 | – | 500 | – | 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% |