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 | $245,694 | 0.0% | 5,069 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $245,694 | -24.4% | 5,069 | -6.0% | 0.00% | -50.0% |
| Q4 2022 | $324,868 | +2399.0% | 5,392 | +1251.4% | 0.00% | – |
| Q2 2016 | $13,000 | -18.8% | 399 | 0.0% | 0.00% | – |
| Q1 2016 | $16,000 | -97.6% | 399 | -96.0% | 0.00% | -100.0% |
| Q4 2015 | $675,000 | +3650.0% | 9,923 | +2387.0% | 0.01% | – |
| Q3 2015 | $18,000 | -14.3% | 399 | 0.0% | 0.00% | – |
| Q2 2015 | $21,000 | +10.5% | 399 | -23.3% | 0.00% | – |
| Q1 2015 | $19,000 | +90.0% | 520 | 0.0% | 0.00% | – |
| Q4 2014 | $10,000 | 0.0% | 520 | 0.0% | 0.00% | – |
| Q3 2014 | $10,000 | 0.0% | 520 | 0.0% | 0.00% | – |
| Q2 2014 | $10,000 | -47.4% | 520 | 0.0% | 0.00% | – |
| Q1 2014 | $19,000 | +46.2% | 520 | 0.0% | 0.00% | – |
| Q4 2013 | $13,000 | +62.5% | 520 | +30.3% | 0.00% | – |
| Q3 2013 | $8,000 | +60.0% | 399 | 0.0% | 0.00% | – |
| Q2 2013 | $5,000 | – | 399 | – | 0.00% | – |
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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% |