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 2021 | $2,000 | +100.0% | 25 | 0.0% | 0.00% | – |
| Q2 2021 | $1,000 | -99.9% | 25 | -50.0% | 0.00% | – |
| Q1 2021 | $1,256,000 | – | 50 | +100.0% | 0.00% | – |
| Q4 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q3 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q2 2020 | $0 | – | 25 | 0.0% | 0.00% | – |
| Q1 2020 | $0 | -100.0% | 25 | -95.2% | 0.00% | – |
| Q4 2019 | $8,000 | +100.0% | 525 | 0.0% | 0.00% | – |
| Q3 2019 | $4,000 | -20.0% | 525 | +5.0% | 0.00% | – |
| Q2 2019 | $5,000 | -28.6% | 500 | 0.0% | 0.00% | – |
| Q3 2018 | $7,000 | – | 500 | – | 0.00% | – |
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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% |