PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 190 filers reported holding PROTHENA CORP PLC in Q3 2023. The put-call ratio across all filers is 1.91 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2017 | $4,600,000 | -5.3% | 85,000 | -2.4% | 1.92% | -20.6% |
| Q1 2017 | $4,859,000 | +19.7% | 87,100 | +5.6% | 2.42% | +1.1% |
| Q4 2016 | $4,058,000 | +35.3% | 82,500 | +65.0% | 2.39% | +52.4% |
| Q3 2016 | $2,999,000 | +420.7% | 50,000 | +257.1% | 1.57% | +337.0% |
| Q1 2016 | $576,000 | -100.0% | 14,000 | -91.1% | 0.36% | -86.8% |
| Q3 2014 | $3,479,120,000 | +1179262.7% | 157,000 | +1098.1% | 2.71% | +967.7% |
| Q2 2014 | $295,000 | – | 13,104 | – | 0.25% | – |
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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% |