PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 146 filers reported holding PROTHENA CORP PLC in Q4 2016. The put-call ratio across all filers is 1.16 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2018 | $1,009,000 | -2.0% | 27,485 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $1,030,000 | -27.1% | 27,485 | +26.0% | 0.00% | -50.0% |
| Q3 2017 | $1,413,000 | +19.6% | 21,813 | -0.0% | 0.00% | 0.0% |
| Q2 2017 | $1,181,000 | +56.8% | 21,822 | +61.6% | 0.00% | +100.0% |
| Q1 2017 | $753,000 | +42.9% | 13,503 | +26.0% | 0.00% | 0.0% |
| Q4 2016 | $527,000 | -36.6% | 10,718 | -22.6% | 0.00% | 0.0% |
| Q3 2016 | $831,000 | -1.7% | 13,856 | -27.2% | 0.00% | -50.0% |
| Q2 2016 | $845,000 | -6.4% | 19,040 | -0.2% | 0.00% | 0.0% |
| Q1 2016 | $903,000 | -30.4% | 19,076 | +0.2% | 0.00% | 0.0% |
| Q4 2015 | $1,297,000 | +50.3% | 19,040 | 0.0% | 0.00% | 0.0% |
| Q3 2015 | $863,000 | – | 19,040 | – | 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% |