PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 175 filers reported holding PROTHENA CORP PLC in Q1 2022. The put-call ratio across all filers is 0.32 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $3,277,624 | -50.8% | 67,930 | -30.4% | 0.00% | -50.0% |
| Q2 2023 | $6,660,850 | +19.7% | 97,552 | -15.0% | 0.00% | 0.0% |
| Q1 2023 | $5,564,356 | +45.7% | 114,800 | +81.1% | 0.00% | +33.3% |
| Q4 2022 | $3,819,851 | -35.8% | 63,400 | -35.4% | 0.00% | -25.0% |
| Q3 2022 | $5,951,000 | +156.8% | 98,144 | +14.9% | 0.00% | +100.0% |
| Q2 2022 | $2,317,000 | +147.3% | 85,382 | +233.7% | 0.00% | +100.0% |
| Q1 2022 | $937,000 | -81.1% | 25,585 | -74.5% | 0.00% | -66.7% |
| Q4 2021 | $4,954,000 | +30.5% | 100,288 | +88.2% | 0.00% | +50.0% |
| Q3 2021 | $3,796,000 | +31.0% | 53,285 | -5.4% | 0.00% | 0.0% |
| Q2 2021 | $2,897,000 | +109.5% | 56,352 | +2.3% | 0.00% | +100.0% |
| Q1 2021 | $1,383,000 | +1419.8% | 55,095 | +627.6% | 0.00% | – |
| Q4 2020 | $91,000 | +213.8% | 7,572 | +160.5% | 0.00% | – |
| Q3 2020 | $29,000 | -87.4% | 2,907 | -86.8% | 0.00% | – |
| Q2 2020 | $230,000 | +9.0% | 21,949 | +11.1% | 0.00% | – |
| Q1 2020 | $211,000 | -28.0% | 19,752 | +6.4% | 0.00% | – |
| Q4 2019 | $293,000 | -2.7% | 18,558 | -51.8% | 0.00% | – |
| Q3 2019 | $301,000 | -56.8% | 38,503 | -41.5% | 0.00% | -100.0% |
| Q2 2019 | $696,000 | +45.6% | 65,794 | +66.9% | 0.00% | – |
| Q1 2019 | $478,000 | -80.2% | 39,430 | -83.2% | 0.00% | -100.0% |
| Q4 2018 | $2,411,000 | +29.6% | 234,146 | +64.8% | 0.00% | 0.0% |
| Q3 2018 | $1,860,000 | -19.0% | 142,107 | -9.7% | 0.00% | 0.0% |
| Q2 2018 | $2,295,000 | -13.3% | 157,350 | +118.2% | 0.00% | 0.0% |
| Q1 2018 | $2,646,000 | +36.7% | 72,108 | +39.8% | 0.00% | +100.0% |
| Q4 2017 | $1,935,000 | -34.2% | 51,591 | +13.6% | 0.00% | -66.7% |
| Q3 2017 | $2,942,000 | +60.6% | 45,416 | +34.1% | 0.00% | +200.0% |
| Q2 2017 | $1,832,000 | -35.9% | 33,858 | -33.9% | 0.00% | -50.0% |
| Q1 2017 | $2,859,000 | -42.6% | 51,224 | -49.4% | 0.00% | -50.0% |
| Q4 2016 | $4,981,000 | +544.4% | 101,265 | +684.9% | 0.00% | – |
| Q3 2016 | $773,000 | +300.5% | 12,901 | +134.2% | 0.00% | – |
| Q2 2016 | $193,000 | -82.9% | 5,509 | -80.0% | 0.00% | -100.0% |
| Q1 2016 | $1,131,000 | +113.8% | 27,497 | +253.3% | 0.00% | 0.0% |
| Q4 2015 | $529,000 | +1.5% | 7,782 | -32.4% | 0.00% | – |
| Q3 2015 | $521,000 | +31.9% | 11,510 | +53.7% | 0.00% | – |
| Q2 2015 | $395,000 | +11.3% | 7,488 | -19.5% | 0.00% | – |
| Q1 2015 | $355,000 | +16.8% | 9,300 | -36.6% | 0.00% | – |
| Q4 2014 | $304,000 | +660.0% | 14,665 | +700.9% | 0.00% | – |
| Q3 2014 | $40,000 | +185.7% | 1,831 | +185.6% | 0.00% | – |
| Q2 2014 | $14,000 | -91.1% | 641 | -84.5% | 0.00% | – |
| Q1 2014 | $158,000 | -20.6% | 4,126 | -45.1% | 0.00% | – |
| Q4 2013 | $199,000 | +306.1% | 7,515 | +211.1% | 0.00% | – |
| Q3 2013 | $49,000 | -53.8% | 2,416 | -70.3% | 0.00% | – |
| Q2 2013 | $106,000 | – | 8,135 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $558,941,510 | 18.85% |
| Finepoint Capital LP | 349,300 | $16,853,725 | 8.39% |
| Palo Alto Investors LP | 1,657,458 | $79,972,349 | 7.57% |
| Birchview Capital, LP | 169,574 | $8,181,946 | 6.96% |
| First Light Asset Management, LLC | 1,494,039 | $72,087,382 | 6.85% |
| DCF Advisers, LLC | 82,950 | $4,002,338 | 2.18% |
| Prosight Management, LP | 126,202 | $6,089,247 | 1.93% |
| PFM Health Sciences, LP | 836,571 | $40,364,551 | 1.90% |
| SECTORAL ASSET MANAGEMENT INC | 172,407 | $8,318,638 | 1.62% |
| Boxer Capital, LLC | 625,000 | $30,156,250 | 1.60% |