PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 196 filers reported holding PROTHENA CORP PLC in Q4 2021. The put-call ratio across all filers is 0.55 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $214,218 | +0.7% | 4,440 | +42.4% | 0.00% | – |
| Q2 2023 | $212,800 | +435.5% | 3,117 | +280.1% | 0.00% | – |
| Q1 2023 | $39,735 | -51.0% | 820 | -39.3% | 0.00% | – |
| Q4 2022 | $81,121 | +11.1% | 1,351 | +10.3% | 0.00% | – |
| Q3 2022 | $73,000 | +121.2% | 1,225 | -1.1% | 0.00% | – |
| Q2 2022 | $33,000 | -75.4% | 1,239 | +292.1% | 0.00% | – |
| Q1 2022 | $134,000 | +605.3% | 316 | -14.6% | 0.00% | – |
| Q4 2021 | $19,000 | -81.2% | 370 | -74.3% | 0.00% | – |
| Q3 2021 | $101,000 | +1583.3% | 1,438 | +1129.1% | 0.00% | – |
| Q2 2021 | $6,000 | +100.0% | 117 | -25.0% | 0.00% | – |
| Q1 2021 | $3,000 | +50.0% | 156 | 0.0% | 0.00% | – |
| Q4 2020 | $2,000 | 0.0% | 156 | -25.0% | 0.00% | – |
| Q3 2020 | $2,000 | 0.0% | 208 | +11.8% | 0.00% | – |
| Q2 2020 | $2,000 | 0.0% | 186 | -14.3% | 0.00% | – |
| Q1 2020 | $2,000 | – | 217 | – | 0.00% | – |
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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% |