PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 140 filers reported holding PROTHENA CORP PLC in Q4 2020. The put-call ratio across all filers is 0.56 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $1,720,000 | -64.9% | 47,032 | -52.6% | 0.00% | -66.7% |
| Q4 2021 | $4,897,000 | -44.7% | 99,138 | -20.2% | 0.00% | -40.0% |
| Q3 2021 | $8,848,000 | +83.3% | 124,221 | +32.3% | 0.01% | +66.7% |
| Q2 2021 | $4,826,000 | +217.7% | 93,877 | +55.2% | 0.00% | +200.0% |
| Q1 2021 | $1,519,000 | +110.1% | 60,471 | +0.5% | 0.00% | – |
| Q4 2020 | $723,000 | -21.4% | 60,184 | -34.6% | 0.00% | -100.0% |
| Q3 2020 | $920,000 | +30.1% | 92,059 | +36.2% | 0.00% | 0.0% |
| Q2 2020 | $707,000 | -25.3% | 67,602 | -23.5% | 0.00% | 0.0% |
| Q1 2020 | $946,000 | -16.7% | 88,407 | +23.3% | 0.00% | 0.0% |
| Q4 2019 | $1,135,000 | +266.1% | 71,693 | +81.1% | 0.00% | – |
| Q3 2019 | $310,000 | -35.7% | 39,589 | -13.2% | 0.00% | – |
| Q2 2019 | $482,000 | +34.6% | 45,617 | +54.5% | 0.00% | – |
| Q1 2019 | $358,000 | +46.7% | 29,534 | +24.8% | 0.00% | – |
| Q4 2018 | $244,000 | +15.6% | 23,666 | +46.5% | 0.00% | – |
| Q3 2018 | $211,000 | +31.9% | 16,153 | +47.1% | 0.00% | – |
| Q2 2018 | $160,000 | -67.7% | 10,982 | -18.7% | 0.00% | – |
| Q1 2018 | $496,000 | +14.0% | 13,514 | +16.4% | 0.00% | – |
| Q4 2017 | $435,000 | -74.0% | 11,608 | -55.1% | 0.00% | -100.0% |
| Q3 2017 | $1,673,000 | +69.2% | 25,828 | +41.4% | 0.00% | +100.0% |
| Q2 2017 | $989,000 | -33.8% | 18,268 | -31.8% | 0.00% | -50.0% |
| Q1 2017 | $1,494,000 | +12.6% | 26,774 | -0.7% | 0.00% | 0.0% |
| Q4 2016 | $1,327,000 | +80.3% | 26,970 | +119.9% | 0.00% | +100.0% |
| Q3 2016 | $736,000 | +184.2% | 12,267 | +65.6% | 0.00% | – |
| Q2 2016 | $259,000 | -81.9% | 7,406 | -78.7% | 0.00% | -100.0% |
| Q1 2016 | $1,431,000 | +148.9% | 34,761 | +311.5% | 0.00% | +100.0% |
| Q4 2015 | $575,000 | +44.5% | 8,447 | -3.7% | 0.00% | 0.0% |
| Q3 2015 | $398,000 | -15.0% | 8,774 | -1.2% | 0.00% | 0.0% |
| Q2 2015 | $468,000 | +99.1% | 8,884 | +44.3% | 0.00% | – |
| Q1 2015 | $235,000 | – | 6,155 | – | 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% |