PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 140 filers reported holding PROTHENA CORP PLC in Q4 2020. The put-call ratio across all filers is 0.56 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $1,478,000 | +104.7% | 28,733 | -0.0% | 0.05% | +88.5% |
| Q1 2021 | $722,000 | +72100.0% | 28,742 | +68333.3% | 0.03% | – |
| Q4 2020 | $1,000 | – | 42 | 0.0% | 0.00% | – |
| Q3 2020 | $0 | – | 42 | 0.0% | 0.00% | – |
| Q2 2020 | $0 | – | 42 | 0.0% | 0.00% | – |
| Q1 2020 | $0 | -100.0% | 42 | 0.0% | 0.00% | – |
| Q4 2019 | $1,000 | – | 42 | 0.0% | 0.00% | – |
| Q3 2019 | $0 | – | 42 | 0.0% | 0.00% | – |
| Q2 2019 | $0 | -100.0% | 42 | -99.6% | 0.00% | -100.0% |
| Q1 2015 | $427,000 | +84.8% | 11,200 | +0.9% | 0.01% | +62.5% |
| Q4 2014 | $231,000 | -63.4% | 11,100 | -61.1% | 0.01% | -65.2% |
| Q3 2014 | $631,000 | +57.4% | 28,520 | +60.8% | 0.02% | +53.3% |
| Q2 2014 | $401,000 | – | 17,736 | – | 0.02% | – |
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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% |