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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $354,734 | -29.3% | 7,352 | 0.0% | 0.29% | -22.0% |
| Q2 2023 | $501,995 | +40.9% | 7,352 | 0.0% | 0.38% | +35.6% |
| Q1 2023 | $356,351 | -21.4% | 7,352 | -2.3% | 0.28% | -18.7% |
| Q4 2022 | $453,502 | +538.7% | 7,527 | +540.6% | 0.34% | +460.7% |
| Q3 2022 | $71,000 | +121.9% | 1,175 | 0.0% | 0.06% | +134.6% |
| Q2 2022 | $32,000 | -25.6% | 1,175 | 0.0% | 0.03% | -10.3% |
| Q1 2022 | $43,000 | -18.9% | 1,175 | +9.3% | 0.03% | -14.7% |
| Q4 2021 | $53,000 | -58.6% | 1,075 | -40.1% | 0.03% | -63.8% |
| Q3 2021 | $128,000 | +18.5% | 1,796 | -14.6% | 0.09% | +19.0% |
| Q2 2021 | $108,000 | +66.2% | 2,104 | -18.1% | 0.08% | +51.9% |
| Q1 2021 | $65,000 | +97.0% | 2,569 | -6.8% | 0.05% | +85.7% |
| Q4 2020 | $33,000 | – | 2,755 | – | 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% |