PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 141 filers reported holding PROTHENA CORP PLC in Q3 2020. The put-call ratio across all filers is 1.19 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $315,000 | -22.8% | 4,420 | -88.7% | 0.02% | -17.9% |
| Q2 2020 | $408,000 | +77.4% | 39,000 | +81.4% | 0.03% | +55.6% |
| Q1 2020 | $230,000 | -32.4% | 21,500 | 0.0% | 0.02% | -14.3% |
| Q4 2019 | $340,000 | +16.0% | 21,500 | -42.5% | 0.02% | +23.5% |
| Q3 2019 | $293,000 | -50.3% | 37,388 | -33.0% | 0.02% | -51.4% |
| Q2 2019 | $590,000 | -17.4% | 55,803 | -5.3% | 0.04% | -12.5% |
| Q1 2019 | $714,000 | -44.8% | 58,903 | +2.7% | 0.04% | +17.6% |
| Q2 2014 | $1,293,000 | – | 57,331 | – | 0.03% | – |
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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% |