PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 141 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 | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $530,564 | -11.3% | 14,600 | +17.7% | 0.00% | – |
| 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 | 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% |