PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 120 filers reported holding PROTHENA CORP PLC in Q4 2018. The put-call ratio across all filers is 2.81 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2019 | $209,000 | +34.8% | 13,208 | -33.0% | 0.01% | +25.0% |
| Q3 2019 | $155,000 | -46.6% | 19,708 | -28.1% | 0.01% | -50.0% |
| Q2 2019 | $290,000 | -28.0% | 27,408 | -17.5% | 0.02% | -33.3% |
| Q1 2019 | $403,000 | +17.2% | 33,208 | -0.5% | 0.02% | +9.1% |
| Q4 2018 | $344,000 | -63.0% | 33,372 | -53.0% | 0.02% | -47.6% |
| Q3 2018 | $929,000 | -35.9% | 71,063 | -28.6% | 0.04% | -28.8% |
| Q2 2018 | $1,450,000 | -4.5% | 99,504 | +140.3% | 0.06% | -3.3% |
| Q1 2018 | $1,519,000 | -21.3% | 41,404 | +39.0% | 0.06% | -37.8% |
| Q3 2017 | $1,929,000 | +116.3% | 29,794 | +80.6% | 0.10% | +108.5% |
| Q2 2017 | $892,000 | +30.2% | 16,494 | +34.2% | 0.05% | +46.9% |
| Q1 2017 | $685,000 | +38.4% | 12,294 | -48.5% | 0.03% | +77.8% |
| Q4 2014 | $495,000 | +33.4% | 23,860 | +42.2% | 0.02% | +5.9% |
| Q3 2014 | $371,000 | -42.9% | 16,785 | -41.8% | 0.02% | -50.0% |
| Q2 2014 | $650,000 | -38.4% | 28,844 | +4.7% | 0.03% | -39.3% |
| Q1 2014 | $1,055,000 | +356.7% | 27,559 | +216.3% | 0.06% | +366.7% |
| Q4 2013 | $231,000 | – | 8,712 | – | 0.01% | – |
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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% |