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 | $4,002,338 | -30.8% | 82,950 | -2.1% | 2.18% | -28.7% |
| Q2 2023 | $5,786,730 | +41.7% | 84,750 | +0.6% | 3.06% | +22.3% |
| Q1 2023 | $4,083,600 | -8.5% | 84,250 | +13.7% | 2.50% | -17.1% |
| Q4 2022 | $4,464,525 | -50.2% | 74,100 | -49.9% | 3.02% | -48.0% |
| Q3 2022 | $8,973,000 | +387.1% | 148,000 | +118.1% | 5.80% | +428.4% |
| Q2 2022 | $1,842,000 | -35.8% | 67,856 | -13.6% | 1.10% | -12.7% |
| Q1 2022 | $2,870,000 | -3.2% | 78,500 | +30.8% | 1.26% | +4.6% |
| Q4 2021 | $2,964,000 | -30.7% | 60,000 | 0.0% | 1.20% | -36.3% |
| Q3 2021 | $4,274,000 | +34.6% | 60,000 | -2.8% | 1.89% | +67.7% |
| Q2 2021 | $3,175,000 | +175.6% | 61,750 | +34.7% | 1.12% | +124.6% |
| Q1 2021 | $1,152,000 | – | 45,856 | – | 0.50% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | $557,443,000 | 17.76% |
| Prosight Management, LP | 441,000 | $21,785,000 | 13.04% |
| First Light Asset Management, LLC | 1,622,941 | $80,173,000 | 5.74% |
| Palo Alto Investors LP | 1,685,282 | $83,253,000 | 5.32% |
| Birchview Capital, LP | 40,247 | $1,988,000 | 1.28% |
| DCF Advisers, LLC | 60,000 | $2,964,000 | 1.20% |
| HighVista Strategies LLC | 28,078 | $1,387,000 | 1.10% |
| APOGEM CAPITAL LLC | 33,212 | $1,641,000 | 1.08% |
| Redmile Group, LLC | 765,675 | $37,824,000 | 0.86% |
| Rock Springs Capital Management LP | 647,730 | $31,998,000 | 0.74% |