PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 148 filers reported holding PROTHENA CORP PLC in Q1 2018. The put-call ratio across all filers is 0.26 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $2,742,675 | +34.1% | 56,843 | +34.7% | 0.07% | +23.2% |
| Q1 2023 | $2,045,434 | +8.7% | 42,200 | +35.1% | 0.06% | +5.7% |
| Q4 2022 | $1,882,029 | +549.0% | 31,237 | +432.5% | 0.05% | +194.4% |
| Q4 2021 | $290,000 | -23.1% | 5,866 | -19.9% | 0.02% | -43.8% |
| Q2 2021 | $377,000 | -19.8% | 7,326 | -84.4% | 0.03% | +6.7% |
| Q3 2020 | $470,000 | -17.0% | 47,039 | -13.1% | 0.03% | -23.1% |
| Q2 2020 | $566,000 | +180.2% | 54,141 | +175.4% | 0.04% | +200.0% |
| Q4 2018 | $202,000 | -32.9% | 19,657 | -14.5% | 0.01% | -43.5% |
| Q3 2018 | $301,000 | -69.0% | 22,999 | -13.1% | 0.02% | -66.2% |
| Q1 2018 | $972,000 | +159.9% | 26,465 | +247.6% | 0.07% | +15.3% |
| Q4 2016 | $374,000 | +47.8% | 7,613 | +80.7% | 0.06% | +5.4% |
| Q3 2016 | $253,000 | -64.6% | 4,213 | -79.4% | 0.06% | -40.4% |
| Q2 2016 | $714,000 | +138.0% | 20,419 | +179.9% | 0.09% | +168.6% |
| Q1 2016 | $300,000 | -26.3% | 7,295 | -62.8% | 0.04% | -51.4% |
| Q4 2014 | $407,000 | – | 19,636 | – | 0.07% | – |
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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% |