PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 145 filers reported holding PROTHENA CORP PLC in Q1 2016. The put-call ratio across all filers is 1.24 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2017 | $648,000 | +19.8% | 10,000 | 0.0% | 0.02% | +4.3% |
| Q2 2017 | $541,000 | +98.9% | 10,000 | +150.0% | 0.02% | +21.1% |
| Q4 2015 | $272,000 | +19.8% | 4,000 | -20.0% | 0.02% | +90.0% |
| Q3 2015 | $227,000 | -13.7% | 5,000 | 0.0% | 0.01% | 0.0% |
| Q2 2015 | $263,000 | -72.4% | 5,000 | -80.0% | 0.01% | -76.2% |
| Q1 2015 | $954,000 | -29.3% | 25,000 | -61.5% | 0.04% | -8.7% |
| Q4 2014 | $1,349,000 | -6.3% | 65,000 | 0.0% | 0.05% | +31.4% |
| Q3 2014 | $1,440,000 | -1.8% | 65,000 | 0.0% | 0.04% | +9.4% |
| Q2 2014 | $1,466,000 | -4.3% | 65,000 | +62.5% | 0.03% | +3.2% |
| Q1 2014 | $1,532,000 | -23.0% | 40,000 | -46.7% | 0.03% | -27.9% |
| Q4 2013 | $1,989,000 | +14.3% | 75,000 | -12.8% | 0.04% | +126.3% |
| Q3 2013 | $1,740,000 | – | 86,000 | – | 0.02% | – |
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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% |