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 | $542 | -25.9% | 11,231 | +4.9% | 0.00% | -20.0% |
| Q2 2023 | $731 | +44.5% | 10,702 | +2.6% | 0.01% | +66.7% |
| Q1 2023 | $506 | -13.8% | 10,432 | +7.1% | 0.00% | -25.0% |
| Q4 2022 | $587 | -99.9% | 9,738 | -8.8% | 0.00% | -20.0% |
| Q3 2022 | $648,000 | +165.6% | 10,682 | +59.8% | 0.01% | +400.0% |
| Q1 2022 | $244,000 | -17.6% | 6,685 | +11.4% | 0.00% | 0.0% |
| Q4 2021 | $296,000 | -13.7% | 6,000 | +24.8% | 0.00% | -50.0% |
| Q3 2021 | $343,000 | +9.9% | 4,809 | -43.4% | 0.00% | 0.0% |
| Q1 2018 | $312,000 | -35.1% | 8,489 | -33.8% | 0.00% | -33.3% |
| Q4 2017 | $481,000 | +133.5% | 12,830 | +304.0% | 0.00% | +200.0% |
| Q3 2017 | $206,000 | +46.1% | 3,176 | -21.0% | 0.00% | 0.0% |
| Q2 2016 | $141,000 | -2.8% | 4,021 | +14.0% | 0.00% | 0.0% |
| Q1 2016 | $145,000 | -27.1% | 3,528 | +20.7% | 0.00% | 0.0% |
| Q4 2015 | $199,000 | +14.4% | 2,922 | -23.9% | 0.00% | 0.0% |
| Q3 2015 | $174,000 | +180.6% | 3,839 | +224.2% | 0.00% | – |
| Q2 2015 | $62,000 | +93.8% | 1,184 | +42.7% | 0.00% | – |
| Q1 2015 | $32,000 | +88.2% | 830 | +0.1% | 0.00% | – |
| Q4 2014 | $17,000 | – | 829 | – | 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% |