PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 190 filers reported holding PROTHENA CORP PLC in Q3 2023. The put-call ratio across all filers is 1.91 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $3,957,996 | -11.4% | 82,031 | +25.4% | 0.00% | 0.0% |
| Q2 2023 | $4,466,195 | +61.8% | 65,410 | +14.8% | 0.00% | 0.0% |
| Q1 2023 | $2,761,142 | -16.2% | 56,966 | +3.5% | 0.00% | 0.0% |
| Q4 2022 | $3,294,038 | +3.9% | 55,062 | +3.8% | 0.00% | 0.0% |
| Q3 2022 | $3,169,549 | +120.9% | 53,031 | -0.6% | 0.00% | +100.0% |
| Q2 2022 | $1,434,672 | -28.1% | 53,336 | -2.4% | 0.00% | 0.0% |
| Q1 2022 | $1,996,269 | +132.7% | 54,643 | +214.7% | 0.00% | 0.0% |
| Q4 2021 | $858,000 | -30.3% | 17,366 | +0.5% | 0.00% | 0.0% |
| Q3 2021 | $1,231,000 | +28.4% | 17,283 | -7.3% | 0.00% | 0.0% |
| Q2 2021 | $959,000 | +121.5% | 18,654 | +8.3% | 0.00% | – |
| Q1 2021 | $433,000 | +89.1% | 17,225 | -9.9% | 0.00% | – |
| Q4 2020 | $229,000 | +25.1% | 19,109 | +4.1% | 0.00% | – |
| Q3 2020 | $183,000 | -3.2% | 18,359 | 0.0% | 0.00% | – |
| Q2 2020 | $189,000 | -29.7% | 18,359 | -26.9% | 0.00% | – |
| Q1 2020 | $269,000 | -12.7% | 25,116 | +5.2% | 0.00% | – |
| Q4 2019 | $308,000 | +53.2% | 23,865 | -7.5% | 0.00% | – |
| Q3 2019 | $201,000 | -26.4% | 25,805 | 0.0% | 0.00% | – |
| Q2 2019 | $273,000 | -14.7% | 25,805 | -2.1% | 0.00% | – |
| Q1 2019 | $320,000 | +148.1% | 26,367 | +111.1% | 0.00% | – |
| Q4 2018 | $129,000 | -63.2% | 12,488 | -53.4% | 0.00% | – |
| Q3 2018 | $351,000 | -19.7% | 26,823 | -10.6% | 0.00% | – |
| Q2 2018 | $437,000 | -57.4% | 30,004 | +7.3% | 0.00% | -100.0% |
| Q1 2018 | $1,027,000 | -3.1% | 27,969 | -1.1% | 0.00% | 0.0% |
| Q4 2017 | $1,060,000 | -41.6% | 28,271 | +0.9% | 0.00% | -50.0% |
| Q3 2017 | $1,815,000 | +17.5% | 28,020 | -1.9% | 0.00% | 0.0% |
| Q2 2017 | $1,545,000 | +6.9% | 28,559 | +10.3% | 0.00% | 0.0% |
| Q1 2017 | $1,445,000 | +29.6% | 25,895 | +14.3% | 0.00% | 0.0% |
| Q4 2016 | $1,115,000 | -17.7% | 22,652 | +0.2% | 0.00% | 0.0% |
| Q3 2016 | $1,355,000 | +71.7% | 22,609 | +0.2% | 0.00% | +100.0% |
| Q2 2016 | $789,000 | -4.0% | 22,572 | +10.6% | 0.00% | 0.0% |
| Q1 2016 | $822,000 | -38.3% | 20,407 | +4.3% | 0.00% | 0.0% |
| Q4 2015 | $1,333,000 | +51.8% | 19,572 | +1.1% | 0.00% | 0.0% |
| Q3 2015 | $878,000 | -11.8% | 19,366 | +2.6% | 0.00% | 0.0% |
| Q2 2015 | $995,000 | +51.7% | 18,876 | +9.8% | 0.00% | 0.0% |
| Q1 2015 | $656,000 | +91.3% | 17,184 | +3.8% | 0.00% | – |
| Q4 2014 | $343,000 | -7.0% | 16,554 | -0.6% | 0.00% | -100.0% |
| Q3 2014 | $369,000 | +19.8% | 16,653 | +22.0% | 0.00% | – |
| Q2 2014 | $308,000 | -22.4% | 13,652 | +31.7% | 0.00% | -100.0% |
| Q1 2014 | $397,000 | +47.0% | 10,365 | +1.5% | 0.00% | – |
| Q4 2013 | $270,000 | +30.4% | 10,213 | -0.2% | 0.00% | – |
| Q3 2013 | $207,000 | – | 10,231 | – | 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% |