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 | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $67,179 | -83.0% | 1,115 | -82.9% | 0.00% | -100.0% |
| Q3 2022 | $395,000 | -57.7% | 6,515 | -81.0% | 0.00% | -66.7% |
| Q2 2022 | $933,000 | -50.9% | 34,377 | -71.4% | 0.00% | -72.7% |
| Q4 2019 | $1,900,000 | +312.1% | 120,000 | +279.6% | 0.01% | +450.0% |
| Q2 2018 | $461,000 | +33.6% | 31,611 | +236.0% | 0.00% | +100.0% |
| Q1 2018 | $345,000 | -88.8% | 9,409 | -93.2% | 0.00% | -95.8% |
| Q3 2014 | $3,086,000 | -22.1% | 139,248 | -20.7% | 0.02% | -46.7% |
| Q2 2014 | $3,960,000 | – | 175,611 | – | 0.04% | – |
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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% |