PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 148 filers reported holding PROTHENA CORP PLC in Q1 2018. The put-call ratio across all filers is 0.26 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $181 | -99.7% | 3 | -99.7% | 0.00% | -100.0% |
| Q3 2022 | $60,000 | +122.2% | 995 | 0.0% | 0.00% | +200.0% |
| Q2 2022 | $27,000 | -25.0% | 995 | -0.3% | 0.00% | 0.0% |
| Q1 2022 | $36,000 | -26.5% | 998 | +0.3% | 0.00% | -50.0% |
| Q4 2021 | $49,000 | -31.0% | 995 | 0.0% | 0.00% | -33.3% |
| Q3 2021 | $71,000 | -13.4% | 995 | -37.6% | 0.00% | 0.0% |
| Q2 2021 | $82,000 | +228.0% | 1,595 | +60.3% | 0.00% | +200.0% |
| Q1 2021 | $25,000 | +108.3% | 995 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $12,000 | +9.1% | 995 | -10.2% | 0.00% | 0.0% |
| Q3 2020 | $11,000 | 0.0% | 1,108 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $11,000 | +1000.0% | 1,108 | +880.5% | 0.00% | – |
| Q1 2020 | $1,000 | -50.0% | 113 | 0.0% | 0.00% | – |
| Q4 2019 | $2,000 | +100.0% | 113 | 0.0% | 0.00% | – |
| Q3 2019 | $1,000 | -92.9% | 113 | -69.9% | 0.00% | -100.0% |
| Q1 2018 | $14,000 | 0.0% | 375 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $14,000 | -33.3% | 375 | 0.0% | 0.00% | -50.0% |
| Q3 2017 | $21,000 | -8.7% | 375 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $23,000 | -42.5% | 375 | -50.0% | 0.00% | 0.0% |
| Q1 2017 | $40,000 | +122.2% | 750 | +100.0% | 0.00% | 0.0% |
| Q4 2016 | $18,000 | – | 375 | – | 0.00% | – |
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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% |