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 | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $1,434,000 | +1548.3% | 23,666 | +632.5% | 0.00% | – |
| Q2 2022 | $87,000 | +2800.0% | 3,231 | +5111.3% | 0.00% | – |
| Q3 2021 | $3,000 | -89.3% | 62 | -89.0% | 0.00% | – |
| Q2 2021 | $28,000 | -87.2% | 562 | -93.6% | 0.00% | – |
| Q1 2021 | $219,000 | +106.6% | 8,737 | -1.7% | 0.00% | – |
| Q4 2020 | $106,000 | +55.9% | 8,891 | +29.6% | 0.00% | – |
| Q3 2020 | $68,000 | +423.1% | 6,862 | +427.4% | 0.00% | – |
| Q2 2020 | $13,000 | -72.3% | 1,301 | -70.9% | 0.00% | – |
| Q1 2020 | $47,000 | -69.9% | 4,477 | -54.7% | 0.00% | – |
| Q4 2019 | $156,000 | +15.6% | 9,874 | -43.0% | 0.00% | – |
| Q3 2019 | $135,000 | -30.8% | 17,322 | -6.2% | 0.00% | -100.0% |
| Q2 2019 | $195,000 | +9650.0% | 18,469 | +10700.6% | 0.00% | – |
| Q1 2019 | $2,000 | -99.1% | 171 | -99.2% | 0.00% | -100.0% |
| Q4 2018 | $216,000 | -17.9% | 21,037 | +4.3% | 0.00% | 0.0% |
| Q3 2018 | $263,000 | +1361.1% | 20,163 | +1487.6% | 0.00% | – |
| Q2 2018 | $18,000 | -33.3% | 1,270 | +154.0% | 0.00% | -100.0% |
| Q2 2017 | $27,000 | -75.0% | 500 | -74.4% | 0.00% | -80.0% |
| Q1 2017 | $108,000 | -36.1% | 1,951 | -43.2% | 0.01% | -50.0% |
| Q4 2016 | $169,000 | -83.6% | 3,436 | -77.3% | 0.01% | -87.7% |
| Q4 2015 | $1,031,000 | +164.4% | 15,147 | +76.0% | 0.08% | +179.3% |
| Q3 2015 | $390,000 | +83.1% | 8,607 | +112.3% | 0.03% | +61.1% |
| Q2 2015 | $213,000 | -38.3% | 4,055 | -55.2% | 0.02% | -55.0% |
| Q1 2015 | $345,000 | +93.8% | 9,060 | +5.9% | 0.04% | +81.8% |
| Q4 2014 | $178,000 | – | 8,555 | – | 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% |