PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 140 filers reported holding PROTHENA CORP PLC in Q4 2020. The put-call ratio across all filers is 0.56 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,376,806 | -54.7% | 90,711 | -36.0% | 0.01% | -50.0% |
| Q2 2023 | $9,670,770 | +417.6% | 141,634 | +267.4% | 0.01% | +500.0% |
| Q1 2023 | $1,868,373 | -18.4% | 38,547 | +1.4% | 0.00% | -33.3% |
| Q4 2022 | $2,289,500 | +37.9% | 38,000 | +38.7% | 0.00% | +50.0% |
| Q3 2022 | $1,660,655 | +342.8% | 27,390 | +98.6% | 0.00% | +100.0% |
| Q2 2022 | $375,000 | -28.3% | 13,795 | -3.5% | 0.00% | 0.0% |
| Q1 2022 | $523,000 | -22.3% | 14,295 | +4.9% | 0.00% | 0.0% |
| Q4 2021 | $673,000 | -31.3% | 13,629 | -1.0% | 0.00% | -50.0% |
| Q3 2021 | $980,000 | +41.4% | 13,767 | +2.1% | 0.00% | +100.0% |
| Q2 2021 | $693,000 | +99.1% | 13,485 | -2.5% | 0.00% | 0.0% |
| Q1 2021 | $348,000 | +109.6% | 13,837 | 0.0% | 0.00% | – |
| Q4 2020 | $166,000 | +28.7% | 13,837 | +7.1% | 0.00% | – |
| Q3 2020 | $129,000 | -12.8% | 12,918 | -8.6% | 0.00% | – |
| Q2 2020 | $148,000 | -30.8% | 14,135 | -29.3% | 0.00% | -100.0% |
| Q1 2020 | $214,000 | -32.3% | 19,992 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $316,000 | +117.9% | 19,992 | +8.2% | 0.00% | – |
| Q3 2019 | $145,000 | -25.6% | 18,472 | 0.0% | 0.00% | – |
| Q2 2019 | $195,000 | -5.3% | 18,472 | +8.7% | 0.00% | – |
| Q1 2019 | $206,000 | +17.7% | 16,988 | 0.0% | 0.00% | – |
| Q4 2018 | $175,000 | -21.2% | 16,988 | 0.0% | 0.00% | – |
| Q3 2018 | $222,000 | -10.5% | 16,988 | 0.0% | 0.00% | -100.0% |
| Q2 2018 | $248,000 | -97.9% | 16,988 | -94.7% | 0.00% | -96.0% |
| Q1 2018 | $11,838,000 | +6.4% | 322,470 | +8.7% | 0.02% | +8.7% |
| Q4 2017 | $11,125,000 | -33.5% | 296,733 | +15.0% | 0.02% | -36.1% |
| Q3 2017 | $16,718,000 | +27.9% | 258,106 | +6.9% | 0.04% | +24.1% |
| Q2 2017 | $13,073,000 | +0.9% | 241,547 | +4.0% | 0.03% | -3.3% |
| Q1 2017 | $12,953,000 | +6.4% | 232,173 | -6.2% | 0.03% | +3.4% |
| Q4 2016 | $12,173,000 | -22.0% | 247,481 | -4.9% | 0.03% | -3.3% |
| Q3 2016 | $15,604,000 | +95.2% | 260,193 | +13.8% | 0.03% | +50.0% |
| Q2 2016 | $7,993,000 | +4.3% | 228,618 | +22.8% | 0.02% | +5.3% |
| Q1 2016 | $7,664,000 | -30.7% | 186,223 | +14.7% | 0.02% | -29.6% |
| Q4 2015 | $11,059,000 | +1695.3% | 162,373 | +1095.9% | 0.03% | +1250.0% |
| Q3 2015 | $616,000 | -23.0% | 13,578 | -10.6% | 0.00% | 0.0% |
| Q2 2015 | $800,000 | +58.7% | 15,188 | +15.0% | 0.00% | +100.0% |
| Q1 2015 | $504,000 | +83.9% | 13,212 | 0.0% | 0.00% | 0.0% |
| Q4 2014 | $274,000 | -6.5% | 13,212 | 0.0% | 0.00% | 0.0% |
| Q3 2014 | $293,000 | -1.7% | 13,212 | 0.0% | 0.00% | 0.0% |
| Q2 2014 | $298,000 | – | 13,212 | – | 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% |