PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 201 filers reported holding PROTHENA CORP PLC in Q4 2022. The put-call ratio across all filers is 0.29 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $251,062 | -91.1% | 4,167 | -98.4% | 0.00% | -100.0% |
| Q2 2019 | $2,831,000 | +13.4% | 267,821 | +30.2% | 0.00% | 0.0% |
| Q1 2019 | $2,496,000 | +1123.5% | 205,756 | +940.7% | 0.00% | – |
| Q4 2018 | $204,000 | -83.7% | 19,771 | -40.8% | 0.00% | -100.0% |
| Q4 2017 | $1,251,000 | -19.4% | 33,377 | +39.2% | 0.00% | -50.0% |
| Q3 2017 | $1,553,000 | +39.4% | 23,982 | +16.5% | 0.00% | +100.0% |
| Q2 2017 | $1,114,000 | -12.5% | 20,584 | -9.8% | 0.00% | 0.0% |
| Q1 2017 | $1,273,000 | -33.3% | 22,819 | -41.2% | 0.00% | -50.0% |
| Q4 2016 | $1,909,000 | -25.9% | 38,807 | -9.6% | 0.00% | -33.3% |
| Q3 2016 | $2,575,000 | +53.0% | 42,944 | -10.8% | 0.00% | +50.0% |
| Q2 2016 | $1,683,000 | -2.3% | 48,151 | +15.0% | 0.00% | 0.0% |
| Q1 2016 | $1,723,000 | -38.4% | 41,861 | +2.0% | 0.00% | -33.3% |
| Q4 2015 | $2,796,000 | +105.4% | 41,054 | +36.8% | 0.00% | +50.0% |
| Q3 2015 | $1,361,000 | -58.1% | 30,011 | -64.7% | 0.00% | -50.0% |
| Q1 2015 | $3,246,000 | -18.8% | 85,113 | -55.8% | 0.00% | -20.0% |
| Q4 2014 | $3,997,000 | +3.1% | 192,555 | +10.1% | 0.01% | 0.0% |
| Q3 2014 | $3,875,000 | +155.4% | 174,865 | +159.9% | 0.01% | +150.0% |
| Q2 2014 | $1,517,000 | – | 67,294 | – | 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% |