PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 146 filers reported holding PROTHENA CORP PLC in Q1 2021. The put-call ratio across all filers is 0.25 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $3,136,250 | +78.4% | 65,000 | -7.1% | 0.01% | -45.5% |
| Q1 2021 | $1,758,000 | -21.8% | 70,000 | -68.9% | 0.02% | -33.3% |
| Q3 2020 | $2,248,000 | +4.1% | 225,000 | +8.9% | 0.03% | -13.2% |
| Q2 2020 | $2,160,000 | +12.1% | 206,555 | +14.8% | 0.04% | -20.8% |
| Q1 2020 | $1,926,000 | +712.7% | 180,000 | +1100.0% | 0.05% | +860.0% |
| Q4 2019 | $237,000 | -87.4% | 15,000 | -70.0% | 0.01% | -87.5% |
| Q4 2017 | $1,875,000 | +44.8% | 50,000 | +150.0% | 0.04% | +25.0% |
| Q3 2017 | $1,295,000 | -52.1% | 20,000 | -60.0% | 0.03% | -40.7% |
| Q2 2017 | $2,706,000 | – | 50,000 | – | 0.05% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| RA Capital Management | 1,554,918 | $59,569,000 | 4.27% |
| Cormorant Asset Management, LP | 350,000 | $13,409,000 | 3.08% |
| Redmile Group, LLC | 559,611 | $21,439,000 | 2.56% |
| Ghost Tree Capital, LLC | 110,000 | $4,214,000 | 2.50% |
| Atika Capital Management LLC | 57,500 | $2,203,000 | 1.88% |
| Palo Alto Investors LP | 1,065,836 | $40,832,000 | 1.69% |
| Perceptive Advisors | 350,000 | $13,409,000 | 1.41% |
| Orbimed Advisors | 1,889,000 | $72,368,000 | 0.89% |
| Rock Springs Capital Management LP | 65,000 | $2,490,000 | 0.57% |
| Cupps Capital Management, LLC | 164,199 | $6,290,000 | 0.48% |