PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 190 filers reported holding PROTHENA CORP PLC in Q3 2023. The put-call ratio across all filers is 1.91 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $574,947 | -28.4% | 11,916 | +1.3% | 0.00% | -50.0% |
| Q2 2023 | $803,382 | +46.9% | 11,766 | +4.3% | 0.00% | +100.0% |
| Q1 2023 | $547,032 | -19.6% | 11,286 | 0.0% | 0.00% | -50.0% |
| Q4 2022 | $679,982 | -30.2% | 11,286 | -29.8% | 0.00% | -33.3% |
| Q3 2022 | $974,000 | +123.4% | 16,066 | 0.0% | 0.00% | +200.0% |
| Q2 2022 | $436,000 | -25.9% | 16,066 | 0.0% | 0.00% | 0.0% |
| Q1 2022 | $588,000 | -25.9% | 16,066 | 0.0% | 0.00% | 0.0% |
| Q4 2021 | $794,000 | -31.3% | 16,066 | -0.9% | 0.00% | -50.0% |
| Q3 2021 | $1,155,000 | +40.2% | 16,211 | +1.1% | 0.00% | 0.0% |
| Q2 2021 | $824,000 | +120.9% | 16,031 | +7.9% | 0.00% | +100.0% |
| Q1 2021 | $373,000 | +36.1% | 14,851 | -34.9% | 0.00% | 0.0% |
| Q4 2020 | $274,000 | +20.2% | 22,801 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $228,000 | -4.2% | 22,801 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $238,000 | -2.5% | 22,801 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $244,000 | -32.4% | 22,801 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $361,000 | +101.7% | 22,801 | 0.0% | 0.00% | – |
| Q3 2019 | $179,000 | -25.7% | 22,801 | 0.0% | 0.00% | -100.0% |
| Q2 2019 | $241,000 | -10.1% | 22,801 | +3.0% | 0.00% | 0.0% |
| Q1 2019 | $268,000 | +17.5% | 22,131 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $228,000 | -21.1% | 22,131 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $289,000 | -10.5% | 22,131 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $323,000 | -56.1% | 22,131 | +10.4% | 0.00% | -50.0% |
| Q1 2018 | $736,000 | -1.3% | 20,051 | +0.8% | 0.00% | 0.0% |
| Q4 2017 | $746,000 | -40.4% | 19,897 | +3.0% | 0.00% | -33.3% |
| Q3 2017 | $1,251,000 | +19.7% | 19,317 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $1,045,000 | -3.7% | 19,317 | -0.7% | 0.00% | 0.0% |
| Q1 2017 | $1,085,000 | +13.4% | 19,448 | 0.0% | 0.00% | 0.0% |
| Q4 2016 | $957,000 | -17.9% | 19,448 | 0.0% | 0.00% | -25.0% |
| Q3 2016 | $1,166,000 | +72.7% | 19,448 | +0.7% | 0.00% | +100.0% |
| Q2 2016 | $675,000 | -7.8% | 19,308 | +8.6% | 0.00% | -33.3% |
| Q1 2016 | $732,000 | -38.1% | 17,778 | +2.4% | 0.00% | -25.0% |
| Q4 2015 | $1,182,000 | +57.4% | 17,358 | +4.9% | 0.00% | +33.3% |
| Q3 2015 | $751,000 | -7.6% | 16,555 | +7.3% | 0.00% | 0.0% |
| Q2 2015 | $813,000 | +45.7% | 15,429 | +5.4% | 0.00% | +50.0% |
| Q1 2015 | $558,000 | +85.4% | 14,633 | +1.0% | 0.00% | +100.0% |
| Q4 2014 | $301,000 | -6.2% | 14,483 | 0.0% | 0.00% | 0.0% |
| Q3 2014 | $321,000 | -1.8% | 14,483 | 0.0% | 0.00% | 0.0% |
| Q2 2014 | $327,000 | – | 14,483 | – | 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% |