PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 129 filers reported holding PROTHENA CORP PLC in Q3 2019. The put-call ratio across all filers is 0.21 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $393,000 | +289.1% | 7,961 | +456.7% | 0.00% | – |
| Q3 2021 | $101,000 | -93.9% | 1,430 | -97.8% | 0.00% | -100.0% |
| Q1 2021 | $1,659,000 | -21.7% | 66,043 | -62.6% | 0.01% | -25.0% |
| Q4 2020 | $2,119,000 | +1.0% | 176,439 | -16.0% | 0.01% | -11.1% |
| Q3 2020 | $2,099,000 | -11.1% | 210,017 | -7.1% | 0.01% | -10.0% |
| Q2 2020 | $2,362,000 | +5.0% | 225,956 | +7.5% | 0.01% | -23.1% |
| Q1 2020 | $2,249,000 | +26.5% | 210,254 | +87.2% | 0.01% | +62.5% |
| Q4 2019 | $1,778,000 | +308.7% | 112,338 | +102.2% | 0.01% | +300.0% |
| Q3 2019 | $435,000 | -37.6% | 55,569 | -15.8% | 0.00% | -33.3% |
| Q2 2019 | $697,000 | +10.1% | 66,017 | +26.5% | 0.00% | 0.0% |
| Q1 2019 | $633,000 | +300.6% | 52,168 | +1156.5% | 0.00% | +200.0% |
| Q1 2015 | $158,000 | +83.7% | 4,152 | 0.0% | 0.00% | – |
| Q4 2014 | $86,000 | -29.5% | 4,152 | -24.5% | 0.00% | -100.0% |
| Q3 2014 | $122,000 | -17.0% | 5,502 | -24.5% | 0.00% | 0.0% |
| Q3 2013 | $147,000 | – | 7,290 | – | 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% |