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 | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $1,000 | -75.0% | 100 | -50.0% | 0.00% | -100.0% |
| Q3 2018 | $4,000 | 0.0% | 200 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $4,000 | -99.9% | 200 | -4.8% | 0.00% | -50.0% |
| Q1 2018 | $7,710,000 | -2.1% | 210 | 0.0% | 0.00% | -33.3% |
| Q4 2017 | $7,874,000 | -75.7% | 210 | -58.0% | 0.00% | -72.7% |
| Q3 2017 | $32,386,000 | -41.3% | 500 | -50.5% | 0.01% | -26.7% |
| Q2 2017 | $55,162,000 | +141.2% | 1,010 | +146.3% | 0.02% | +114.3% |
| Q1 2017 | $22,874,000 | +13.4% | 410 | 0.0% | 0.01% | +16.7% |
| Q4 2016 | $20,168,000 | -76.3% | 410 | -89.3% | 0.01% | -50.0% |
| Q3 2016 | $85,160,000 | +243.1% | 3,820 | +438.0% | 0.01% | +71.4% |
| Q2 2016 | $24,822,000 | -15.1% | 710 | 0.0% | 0.01% | -22.2% |
| Q1 2016 | $29,224,000 | -39.6% | 710 | 0.0% | 0.01% | -35.7% |
| Q4 2015 | $48,360,000 | +42.2% | 710 | -5.3% | 0.01% | +27.3% |
| Q3 2015 | $34,006,000 | -13.9% | 750 | 0.0% | 0.01% | 0.0% |
| Q2 2015 | $39,504,000 | +38.1% | 750 | 0.0% | 0.01% | +37.5% |
| Q1 2015 | $28,606,000 | +83.7% | 750 | 0.0% | 0.01% | +100.0% |
| Q4 2014 | $15,570,000 | -6.3% | 750 | 0.0% | 0.00% | -20.0% |
| Q3 2014 | $16,620,000 | – | 750 | – | 0.01% | – |
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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% |