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 | $72,858 | -28.4% | 1,510 | +1.3% | 0.00% | 0.0% |
| Q2 2023 | $101,737 | +216361.7% | 1,490 | +53.6% | 0.00% | – |
| Q1 2023 | $47 | +46.9% | 970 | +84.8% | 0.00% | – |
| Q4 2022 | $32 | -99.9% | 525 | 0.0% | 0.00% | – |
| Q3 2022 | $32,000 | +128.6% | 525 | +5.0% | 0.00% | – |
| Q2 2022 | $14,000 | -22.2% | 500 | 0.0% | 0.00% | – |
| Q1 2022 | $18,000 | -84.9% | 500 | -85.6% | 0.00% | -100.0% |
| Q4 2021 | $119,000 | +63.0% | 3,479 | +237.8% | 0.00% | – |
| Q3 2021 | $73,000 | +37.7% | 1,030 | 0.0% | 0.00% | – |
| Q2 2021 | $53,000 | +307.7% | 1,030 | +106.0% | 0.00% | – |
| Q1 2021 | $13,000 | +116.7% | 500 | -13.0% | 0.00% | – |
| Q3 2020 | $6,000 | 0.0% | 575 | 0.0% | 0.00% | – |
| Q2 2020 | $6,000 | 0.0% | 575 | 0.0% | 0.00% | – |
| Q1 2020 | $6,000 | -33.3% | 575 | 0.0% | 0.00% | – |
| Q4 2019 | $9,000 | +80.0% | 575 | 0.0% | 0.00% | – |
| Q3 2019 | $5,000 | +66.7% | 575 | +125.5% | 0.00% | – |
| Q2 2019 | $3,000 | -98.8% | 255 | -98.7% | 0.00% | -100.0% |
| Q1 2019 | $242,000 | +17.5% | 19,955 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $206,000 | +6766.7% | 19,955 | +7725.5% | 0.00% | – |
| Q3 2018 | $3,000 | -57.1% | 255 | -47.4% | 0.00% | – |
| Q2 2018 | $7,000 | +16.7% | 485 | +177.1% | 0.00% | – |
| Q1 2018 | $6,000 | – | 175 | – | 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% |