PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 120 filers reported holding PROTHENA CORP PLC in Q4 2018. The put-call ratio across all filers is 2.81 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $1,000 | – | 20 | +5.3% | 0.00% | – |
| Q1 2021 | $0 | – | 19 | +11.8% | 0.00% | – |
| Q4 2020 | $0 | – | 17 | -52.8% | 0.00% | – |
| Q3 2020 | $0 | – | 36 | – | 0.00% | – |
| Q2 2020 | $0 | – | 0 | – | 0.00% | – |
| Q1 2020 | $0 | – | 0 | -100.0% | 0.00% | – |
| Q3 2018 | $0 | – | 1 | 0.0% | 0.00% | – |
| Q2 2018 | $0 | – | 1 | 0.0% | 0.00% | – |
| Q1 2018 | $0 | – | 1 | 0.0% | 0.00% | – |
| Q4 2017 | $0 | – | 1 | -80.0% | 0.00% | – |
| Q3 2017 | $0 | – | 5 | 0.0% | 0.00% | – |
| Q2 2017 | $0 | – | 5 | +25.0% | 0.00% | – |
| Q1 2017 | $0 | – | 4 | 0.0% | 0.00% | – |
| Q4 2016 | $0 | – | 4 | 0.0% | 0.00% | – |
| Q3 2016 | $0 | – | 4 | 0.0% | 0.00% | – |
| Q2 2016 | $0 | -100.0% | 4 | -75.0% | 0.00% | – |
| Q4 2015 | $1,000 | – | 16 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $702,355,000 | 20.73% |
| Prosight Management, LP | 321,093 | $19,468,000 | 10.43% |
| First Light Asset Management, LLC | 1,538,678 | $93,290,000 | 9.44% |
| Palo Alto Investors LP | 1,649,777 | $100,026,000 | 7.91% |
| Finepoint Capital LP | 305,400 | $18,516,000 | 6.09% |
| Birchview Capital, LP | 118,945 | $7,212,000 | 5.08% |
| DCF Advisers, LLC | 68,000 | $4,123,000 | 2.66% |
| Avidity Partners Management LP | 1,967,000 | $119,259,000 | 2.42% |
| SILVERARC CAPITAL MANAGEMENT, LLC | 110,000 | $6,669,000 | 2.26% |
| DCF Advisers, LLC | 52,500 | $3,183,000 | 2.06% |