PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 193 filers reported holding PROTHENA CORP PLC in Q3 2021. The put-call ratio across all filers is 0.62 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $9,833,350 | -45.9% | 203,800 | -23.5% | 0.02% | -45.7% |
| Q2 2023 | $18,182,964 | -1.6% | 266,300 | -30.2% | 0.05% | -4.2% |
| Q1 2023 | $18,481,611 | -6.2% | 381,300 | +16.6% | 0.05% | -12.7% |
| Q4 2022 | $19,701,750 | -3.0% | 327,000 | -2.4% | 0.06% | -6.8% |
| Q3 2022 | $20,311,000 | +67.1% | 335,000 | -25.2% | 0.06% | +73.5% |
| Q2 2022 | $12,155,000 | -20.1% | 447,700 | +7.6% | 0.03% | -15.0% |
| Q1 2022 | $15,220,000 | -24.6% | 416,200 | +1.9% | 0.04% | -21.6% |
| Q4 2021 | $20,175,000 | -40.2% | 408,400 | -13.8% | 0.05% | -41.4% |
| Q3 2021 | $33,742,000 | +55.4% | 473,700 | +12.2% | 0.09% | +52.6% |
| Q2 2021 | $21,710,000 | +149.2% | 422,300 | +21.8% | 0.06% | +137.5% |
| Q1 2021 | $8,712,000 | +311.7% | 346,800 | +96.8% | 0.02% | +300.0% |
| Q4 2020 | $2,116,000 | +0.1% | 176,200 | -16.7% | 0.01% | 0.0% |
| Q3 2020 | $2,114,000 | -5.9% | 211,600 | -1.5% | 0.01% | -14.3% |
| Q2 2020 | $2,247,000 | +3.0% | 214,800 | +5.3% | 0.01% | -12.5% |
| Q1 2020 | $2,182,000 | -31.4% | 203,900 | +1.4% | 0.01% | +14.3% |
| Q4 2019 | $3,183,000 | +84.0% | 201,100 | -8.9% | 0.01% | +75.0% |
| Q3 2019 | $1,730,000 | -40.6% | 220,700 | -19.9% | 0.00% | -42.9% |
| Q2 2019 | $2,912,000 | -14.2% | 275,500 | -1.6% | 0.01% | -22.2% |
| Q1 2019 | $3,395,000 | +139.4% | 279,900 | +103.3% | 0.01% | +125.0% |
| Q4 2018 | $1,418,000 | +74.8% | 137,700 | +122.1% | 0.00% | +100.0% |
| Q3 2018 | $811,000 | +315.9% | 62,000 | +362.7% | 0.00% | +100.0% |
| Q2 2018 | $195,000 | -71.7% | 13,400 | +32.7% | 0.00% | -75.0% |
| Q4 2015 | $688,000 | +21.8% | 10,100 | -1.0% | 0.00% | 0.0% |
| Q3 2015 | $565,000 | -70.1% | 10,200 | -71.6% | 0.00% | -73.3% |
| Q2 2015 | $1,891,000 | +107.1% | 35,900 | -11.4% | 0.02% | +114.3% |
| Q2 2014 | $913,000 | +36.1% | 40,500 | +131.4% | 0.01% | +16.7% |
| Q1 2014 | $671,000 | – | 17,500 | – | 0.01% | – |
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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% |