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 2023 | $6,657,300 | +182.7% | 97,500 | +100.7% | 0.67% | +91.4% |
| Q1 2023 | $2,354,575 | -57.1% | 48,578 | -46.7% | 0.35% | -55.9% |
| Q4 2022 | $5,493,475 | -65.7% | 91,178 | -59.4% | 0.79% | -17.0% |
| Q3 2021 | $15,999,000 | +33.0% | 224,600 | -4.0% | 0.95% | +0.5% |
| Q2 2021 | $12,030,000 | +2573.3% | 234,000 | +1206.8% | 0.95% | +2328.2% |
| Q1 2021 | $450,000 | -55.9% | 17,906 | +19.4% | 0.04% | -92.6% |
| Q4 2015 | $1,021,000 | -53.7% | 15,000 | -73.9% | 0.53% | -71.9% |
| Q1 2014 | $2,203,000 | +121.4% | 57,500 | +53.3% | 1.88% | +111.9% |
| Q4 2013 | $995,000 | – | 37,500 | – | 0.88% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $697,952,870 | 21.24% |
| Prosight Management, LP | 330,000 | $19,882,500 | 10.84% |
| First Light Asset Management, LLC | 1,535,599 | $92,519,840 | 8.59% |
| Palo Alto Investors LP | 1,658,577 | $99,929,264 | 8.52% |
| Finepoint Capital LP | 322,900 | $19,455 | 6.29% |
| Birchview Capital, LP | 127,195 | $7,663 | 5.41% |
| Avidity Partners Management LP | 2,953,000 | $177,918,250 | 3.85% |
| DCF Advisers, LLC | 74,100 | $4,464,525 | 3.02% |
| PFM Health Sciences, LP | 875,464 | $52,746,706 | 1.89% |
| SECTORAL ASSET MANAGEMENT INC | 115,200 | $6,940,800 | 1.34% |