PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 147 filers reported holding PROTHENA CORP PLC in Q1 2021. The put-call ratio across all filers is 0.25 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $1,409,000 | +160.9% | 56,100 | +24.7% | 0.04% | +218.2% |
| Q4 2020 | $540,000 | +8.0% | 45,000 | -10.0% | 0.01% | -38.9% |
| Q3 2020 | $500,000 | -61.4% | 50,000 | +150.0% | 0.02% | -94.0% |
| Q3 2017 | $1,296,000 | +19.7% | 20,000 | 0.0% | 0.30% | +10.0% |
| Q2 2017 | $1,083,000 | -3.0% | 20,000 | 0.0% | 0.27% | +31.6% |
| Q1 2017 | $1,116,000 | – | 20,000 | – | 0.21% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 9,426,640 | $73,905,000 | 9.33% |
| GREAT POINT PARTNERS LLC | 2,066,041 | $16,198,000 | 1.49% |
| LONESTAR CAPITAL MANAGEMENT LLC | 300,000 | $2,352,000 | 0.78% |
| TANG CAPITAL MANAGEMENT LLC | 423,823 | $3,323,000 | 0.57% |
| Palo Alto Investors LP | 1,004,449 | $7,875,000 | 0.52% |
| Orbimed Advisors | 3,022,117 | $23,693,000 | 0.45% |
| Kerrisdale Advisers, LLC | 61,640 | $483,000 | 0.30% |
| Endurant Capital Management LP | 86,407 | $677,000 | 0.24% |
| Campbell & CO Investment Adviser LLC | 47,901 | $376,000 | 0.14% |
| Boxer Capital, LLC | 79,598 | $624,000 | 0.04% |