PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 142 filers reported holding PROTHENA CORP PLC in Q2 2020. The put-call ratio across all filers is 716.50 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $1,031,000 | +669.4% | 20,870 | +62.5% | 0.00% | – |
| Q2 2020 | $134,000 | -2.2% | 12,844 | 0.0% | 0.00% | – |
| Q1 2020 | $137,000 | -32.5% | 12,844 | 0.0% | 0.00% | -100.0% |
| Q4 2019 | $203,000 | +2.0% | 12,844 | -31.8% | 0.00% | 0.0% |
| Q2 2019 | $199,000 | -85.4% | 18,836 | -82.0% | 0.00% | -75.0% |
| Q3 2018 | $1,365,000 | -3.9% | 104,394 | +7.2% | 0.00% | -20.0% |
| Q2 2018 | $1,420,000 | -60.2% | 97,396 | +0.2% | 0.01% | -58.3% |
| Q1 2018 | $3,567,000 | +123.1% | 97,161 | +127.9% | 0.01% | +140.0% |
| Q4 2017 | $1,599,000 | -42.1% | 42,640 | 0.0% | 0.01% | -50.0% |
| Q3 2017 | $2,762,000 | +19.7% | 42,640 | 0.0% | 0.01% | 0.0% |
| Q2 2017 | $2,307,000 | +11.2% | 42,640 | +14.7% | 0.01% | +11.1% |
| Q1 2017 | $2,074,000 | +31.3% | 37,170 | +15.8% | 0.01% | +28.6% |
| Q4 2016 | $1,579,000 | -18.0% | 32,100 | 0.0% | 0.01% | -22.2% |
| Q3 2016 | $1,925,000 | +71.6% | 32,100 | 0.0% | 0.01% | +80.0% |
| Q2 2016 | $1,122,000 | -15.1% | 32,100 | 0.0% | 0.01% | -16.7% |
| Q1 2016 | $1,321,000 | +49.3% | 32,100 | +146.9% | 0.01% | +50.0% |
| Q4 2015 | $885,000 | – | 13,000 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $558,941,510 | 18.85% |
| Finepoint Capital LP | 349,300 | $16,853,725 | 8.39% |
| Palo Alto Investors LP | 1,657,458 | $79,972,349 | 7.57% |
| Birchview Capital, LP | 169,574 | $8,181,946 | 6.96% |
| First Light Asset Management, LLC | 1,494,039 | $72,087,382 | 6.85% |
| DCF Advisers, LLC | 82,950 | $4,002,338 | 2.18% |
| Prosight Management, LP | 126,202 | $6,089,247 | 1.93% |
| PFM Health Sciences, LP | 836,571 | $40,364,551 | 1.90% |
| SECTORAL ASSET MANAGEMENT INC | 172,407 | $8,318,638 | 1.62% |
| Boxer Capital, LLC | 625,000 | $30,156,250 | 1.60% |