PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 189 filers reported holding PROTHENA CORP PLC in Q1 2023. The put-call ratio across all filers is 0.56 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $305 | -27.9% | 6,327 | +2.2% | 0.00% | 0.0% |
| Q2 2023 | $423 | +61.5% | 6,189 | +14.3% | 0.00% | +50.0% |
| Q1 2023 | $262 | -29.0% | 5,414 | -11.6% | 0.00% | -33.3% |
| Q4 2022 | $369 | -99.9% | 6,126 | +7.1% | 0.00% | 0.0% |
| Q3 2022 | $347,000 | +126.8% | 5,720 | +1.6% | 0.00% | +200.0% |
| Q2 2022 | $153,000 | -24.6% | 5,631 | +1.6% | 0.00% | -50.0% |
| Q1 2022 | $203,000 | -65.2% | 5,541 | -53.1% | 0.00% | 0.0% |
| Q4 2021 | $584,000 | +40.4% | 11,822 | +102.6% | 0.00% | -50.0% |
| Q3 2021 | $416,000 | +33.3% | 5,835 | -3.7% | 0.00% | +33.3% |
| Q2 2021 | $312,000 | -1.3% | 6,060 | +24.4% | 0.00% | -70.0% |
| Q3 2017 | $316,000 | +23.4% | 4,872 | +3.0% | 0.01% | +25.0% |
| Q2 2017 | $256,000 | +8.0% | 4,731 | +11.2% | 0.01% | -33.3% |
| Q1 2017 | $237,000 | +12.9% | 4,255 | -0.3% | 0.01% | +33.3% |
| Q4 2016 | $210,000 | -4.5% | 4,267 | +16.1% | 0.01% | -30.8% |
| Q3 2016 | $220,000 | +5.8% | 3,674 | +0.1% | 0.01% | +8.3% |
| Q2 2016 | $208,000 | +2.0% | 3,670 | +22.3% | 0.01% | -52.0% |
| Q4 2015 | $204,000 | – | 3,001 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $697,952,870 | 21.24% |
| Prosight Management, LP | 330,000 | $19,882,500 | 10.84% |
| First Light Asset Management, LLC | 1,535,599 | $92,519,840 | 8.59% |
| Palo Alto Investors LP | 1,658,577 | $99,929,264 | 8.52% |
| Finepoint Capital LP | 322,900 | $19,455 | 6.29% |
| Birchview Capital, LP | 127,195 | $7,663 | 5.41% |
| Avidity Partners Management LP | 2,953,000 | $177,918,250 | 3.85% |
| DCF Advisers, LLC | 74,100 | $4,464,525 | 3.02% |
| PFM Health Sciences, LP | 875,464 | $52,746,706 | 1.89% |
| SECTORAL ASSET MANAGEMENT INC | 115,200 | $6,940,800 | 1.34% |