PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 194 filers reported holding PROTHENA CORP PLC in Q2 2023. The put-call ratio across all filers is 1.55 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $30,395,183 | +42.9% | 445,155 | +1.5% | 0.51% | +31.8% |
| Q1 2023 | $21,265,340 | -19.6% | 438,732 | 0.0% | 0.39% | -25.1% |
| Q4 2022 | $26,433,603 | +89.6% | 438,732 | +90.8% | 0.52% | +90.1% |
| Q3 2022 | $13,945,000 | +926.9% | 230,000 | +521.6% | 0.27% | +328.1% |
| Q1 2018 | $1,358,000 | -69.8% | 37,000 | -69.2% | 0.06% | -72.8% |
| Q4 2017 | $4,499,000 | -42.1% | 120,000 | 0.0% | 0.24% | -46.6% |
| Q3 2017 | $7,772,000 | +19.7% | 120,000 | 0.0% | 0.44% | +8.9% |
| Q2 2017 | $6,494,000 | -3.0% | 120,000 | 0.0% | 0.40% | -8.8% |
| Q1 2017 | $6,695,000 | +13.4% | 120,000 | 0.0% | 0.44% | +15.4% |
| Q4 2016 | $5,903,000 | -18.0% | 120,000 | 0.0% | 0.38% | -12.5% |
| Q3 2016 | $7,196,000 | +71.5% | 120,000 | 0.0% | 0.44% | +70.8% |
| Q2 2016 | $4,195,000 | -15.1% | 120,000 | 0.0% | 0.26% | -6.9% |
| Q1 2016 | $4,939,000 | -30.8% | 120,000 | +14.5% | 0.28% | -22.7% |
| Q4 2015 | $7,138,000 | +80.6% | 104,800 | +20.2% | 0.36% | +55.2% |
| Q3 2015 | $3,952,000 | +77.0% | 87,172 | +49.5% | 0.23% | -33.7% |
| Q1 2014 | $2,233,000 | – | 58,300 | – | 0.35% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $790,974,638 | 19.38% |
| Palo Alto Investors LP | 1,657,458 | $113,171,232 | 9.14% |
| First Light Asset Management, LLC | 1,500,129 | $102,428,808 | 8.03% |
| Birchview Capital, LP | 156,111 | $10,659,259 | 7.99% |
| Finepoint Capital LP | 317,300 | $21,665,244 | 7.50% |
| DCF Advisers, LLC | 84,750 | $5,786,730 | 3.06% |
| Prosight Management, LP | 240,000 | $16,387,200 | 2.46% |
| Affinity Asset Advisors, LLC | 100,000 | $6,828,000 | 2.38% |
| PFM Health Sciences, LP | 774,546 | $52,886,001 | 2.05% |
| SECTORAL ASSET MANAGEMENT INC | 151,848 | $10,368,181 | 1.73% |