PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 146 filers reported holding PROTHENA CORP PLC in Q1 2021. The put-call ratio across all filers is 0.25 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $742,135 | -88.6% | 10,869 | -89.9% | 0.00% | -92.9% |
| Q3 2022 | $6,535,000 | +35.0% | 107,803 | -39.6% | 0.01% | +40.0% |
| Q2 2022 | $4,841,000 | +1157.4% | 178,387 | +1594.7% | 0.01% | +900.0% |
| Q1 2022 | $385,000 | -96.4% | 10,526 | -95.1% | 0.00% | -95.0% |
| Q4 2021 | $10,605,000 | +116.1% | 214,691 | +211.6% | 0.02% | 0.0% |
| Q3 2021 | $4,907,000 | +730.3% | 68,892 | +192.5% | 0.02% | +566.7% |
| Q1 2021 | $591,000 | -22.0% | 23,553 | -62.7% | 0.00% | -25.0% |
| Q4 2020 | $758,000 | -58.7% | 63,073 | -63.7% | 0.00% | -73.3% |
| Q2 2019 | $1,834,000 | +380.1% | 173,557 | +493.0% | 0.02% | +650.0% |
| Q3 2018 | $382,000 | -92.1% | 29,266 | -75.2% | 0.00% | -95.7% |
| Q1 2016 | $4,854,000 | -58.6% | 117,937 | -47.0% | 0.05% | -69.3% |
| Q2 2015 | $11,712,000 | +1599.9% | 222,360 | +1130.5% | 0.15% | +1600.0% |
| Q1 2015 | $689,000 | -28.5% | 18,070 | -58.4% | 0.01% | -35.7% |
| Q3 2014 | $964,000 | -18.2% | 43,486 | -16.8% | 0.01% | -17.6% |
| Q2 2014 | $1,178,000 | – | 52,245 | – | 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% |