PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 146 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 | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $8,758,000 | +184.4% | 177,294 | +310.1% | 0.06% | +181.0% |
| Q3 2021 | $3,079,000 | -60.9% | 43,227 | -86.2% | 0.02% | -65.6% |
| Q1 2021 | $7,884,000 | +107.9% | 313,851 | -0.6% | 0.06% | +84.8% |
| Q4 2020 | $3,793,000 | +19.3% | 315,791 | -0.8% | 0.03% | 0.0% |
| Q3 2020 | $3,180,000 | -8.7% | 318,304 | -4.4% | 0.03% | -13.2% |
| Q2 2020 | $3,482,000 | -2.2% | 332,919 | +0.1% | 0.04% | -17.4% |
| Q1 2020 | $3,560,000 | -28.5% | 332,716 | +5.9% | 0.05% | -6.1% |
| Q4 2019 | $4,976,000 | +119.0% | 314,325 | +8.5% | 0.05% | +75.0% |
| Q3 2019 | $2,272,000 | -11.7% | 289,812 | +19.1% | 0.03% | -22.2% |
| Q2 2019 | $2,572,000 | +39.0% | 243,291 | +59.5% | 0.04% | +33.3% |
| Q1 2019 | $1,850,000 | +273.0% | 152,488 | +216.5% | 0.03% | +200.0% |
| Q4 2018 | $496,000 | – | 48,175 | – | 0.01% | – |
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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% |