PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 193 filers reported holding PROTHENA CORP PLC in Q3 2021. The put-call ratio across all filers is 0.62 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $893,059 | -32.2% | 18,509 | -4.0% | 0.00% | -33.3% |
| Q2 2023 | $1,316,848 | +272.6% | 19,286 | +164.5% | 0.00% | +200.0% |
| Q1 2023 | $353,395 | +15.5% | 7,291 | -12.8% | 0.00% | 0.0% |
| Q1 2022 | $306,000 | -37.6% | 8,363 | -15.7% | 0.00% | 0.0% |
| Q4 2021 | $490,000 | -48.5% | 9,917 | -25.7% | 0.00% | -50.0% |
| Q3 2021 | $951,000 | +275.9% | 13,346 | +171.4% | 0.00% | – |
| Q2 2021 | $253,000 | +4.5% | 4,917 | -70.4% | 0.00% | – |
| Q2 2018 | $242,000 | -82.8% | 16,630 | -56.7% | 0.00% | -100.0% |
| Q1 2018 | $1,411,000 | -2.1% | 38,450 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $1,441,000 | -45.6% | 38,450 | -6.0% | 0.00% | -33.3% |
| Q3 2017 | $2,649,000 | +17.2% | 40,889 | -2.1% | 0.00% | 0.0% |
| Q2 2017 | $2,260,000 | +11.6% | 41,757 | +15.0% | 0.00% | 0.0% |
| Q1 2017 | $2,025,000 | +13.1% | 36,301 | -0.3% | 0.00% | +50.0% |
| Q4 2016 | $1,790,000 | -19.4% | 36,407 | -1.7% | 0.00% | -33.3% |
| Q3 2016 | $2,220,000 | +267.5% | 37,018 | +114.3% | 0.00% | +200.0% |
| Q2 2016 | $604,000 | -26.4% | 17,277 | -13.4% | 0.00% | 0.0% |
| Q1 2016 | $821,000 | -48.7% | 19,952 | -15.1% | 0.00% | -66.7% |
| Q4 2015 | $1,601,000 | +403.5% | 23,502 | +235.2% | 0.00% | +200.0% |
| Q3 2015 | $318,000 | – | 7,012 | – | 0.00% | – |
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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% |