PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 189 filers reported holding PROTHENA CORP PLC in Q1 2023. The put-call ratio across all filers is 0.56 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $7,990,924 | -36.6% | 165,615 | -10.3% | 0.27% | -26.8% |
| Q2 2023 | $12,605,512 | +9.4% | 184,615 | -22.3% | 0.36% | +7.4% |
| Q1 2023 | $11,518,702 | -19.6% | 237,646 | 0.0% | 0.34% | -15.4% |
| Q4 2022 | $14,318,172 | +2.7% | 237,646 | +3.3% | 0.40% | -0.7% |
| Q3 2022 | $13,945,000 | +485.4% | 230,000 | +253.1% | 0.40% | +743.8% |
| Q1 2022 | $2,382,000 | -75.9% | 65,144 | -67.4% | 0.05% | -36.8% |
| Q4 2021 | $9,880,000 | +38.7% | 200,000 | +100.0% | 0.08% | -26.2% |
| Q3 2021 | $7,123,000 | -30.7% | 100,000 | -50.0% | 0.10% | +53.7% |
| Q2 2021 | $10,282,000 | +100.2% | 200,000 | -19.1% | 0.07% | -84.5% |
| Q4 2014 | $5,135,000 | -22.8% | 247,336 | -17.6% | 0.43% | -39.6% |
| Q3 2014 | $6,648,000 | -39.0% | 300,000 | -37.9% | 0.71% | -33.2% |
| Q2 2014 | $10,895,000 | -18.7% | 483,162 | +38.0% | 1.07% | -24.1% |
| Q1 2014 | $13,409,000 | – | 350,000 | – | 1.41% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $558,941,510 | 18.85% |
| Finepoint Capital LP | 349,300 | $16,853,725 | 8.39% |
| Palo Alto Investors LP | 1,657,458 | $79,972,349 | 7.57% |
| Birchview Capital, LP | 169,574 | $8,181,946 | 6.96% |
| First Light Asset Management, LLC | 1,494,039 | $72,087,382 | 6.85% |
| DCF Advisers, LLC | 82,950 | $4,002,338 | 2.18% |
| Prosight Management, LP | 126,202 | $6,089,247 | 1.93% |
| PFM Health Sciences, LP | 836,571 | $40,364,551 | 1.90% |
| SECTORAL ASSET MANAGEMENT INC | 172,407 | $8,318,638 | 1.62% |
| Boxer Capital, LLC | 625,000 | $30,156,250 | 1.60% |