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 | $301,852 | -91.7% | 6,256 | -88.3% | 0.00% | -100.0% |
| Q2 2023 | $3,651,273 | +288.4% | 53,475 | +175.7% | 0.00% | – |
| Q1 2023 | $939,979 | +37.6% | 19,393 | -22.9% | 0.00% | – |
| Q2 2022 | $683,000 | -78.1% | 25,168 | -70.4% | 0.00% | -100.0% |
| Q1 2022 | $3,112,000 | +39.8% | 85,100 | +88.8% | 0.00% | – |
| Q4 2021 | $2,226,000 | -80.8% | 45,068 | -72.4% | 0.00% | -100.0% |
| Q3 2021 | $11,613,000 | +81.5% | 163,049 | +31.0% | 0.00% | +33.3% |
| Q2 2021 | $6,400,000 | +581.6% | 124,500 | +232.9% | 0.00% | – |
| Q1 2021 | $939,000 | +297.9% | 37,400 | +58.5% | 0.00% | – |
| Q3 2020 | $236,000 | -49.8% | 23,592 | -47.5% | 0.00% | – |
| Q2 2020 | $470,000 | +167.0% | 44,900 | +162.4% | 0.00% | – |
| Q4 2018 | $176,000 | +15.8% | 17,111 | +64.3% | 0.00% | – |
| Q2 2018 | $152,000 | -84.5% | 10,417 | -60.9% | 0.00% | -100.0% |
| Q1 2018 | $978,000 | +142.1% | 26,630 | +327.0% | 0.00% | +200.0% |
| Q3 2017 | $404,000 | +38.4% | 6,237 | +15.5% | 0.00% | 0.0% |
| Q2 2017 | $292,000 | -40.0% | 5,400 | -38.2% | 0.00% | -50.0% |
| Q1 2017 | $487,000 | +109.9% | 8,731 | +156.6% | 0.00% | +100.0% |
| Q4 2015 | $232,000 | – | 3,402 | – | 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% |