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 | $328,100 | -69.6% | 6,800 | -57.0% | 0.00% | -50.0% |
| Q2 2023 | $1,078,824 | +345.2% | 15,800 | +216.0% | 0.00% | – |
| Q1 2023 | $242,350 | -35.7% | 5,000 | -64.0% | 0.00% | – |
| Q2 2022 | $377,000 | -37.9% | 13,895 | -16.3% | 0.00% | – |
| Q1 2022 | $607,000 | -25.5% | 16,595 | 0.0% | 0.00% | -100.0% |
| Q4 2021 | $815,000 | +331.2% | 16,595 | -6.3% | 0.00% | – |
| Q1 2020 | $189,000 | -55.5% | 17,708 | +169.9% | 0.00% | – |
| Q3 2017 | $425,000 | +19.7% | 6,560 | 0.0% | 0.00% | – |
| Q2 2017 | $355,000 | -15.9% | 6,560 | -13.2% | 0.00% | – |
| Q1 2017 | $422,000 | -11.0% | 7,557 | -21.5% | 0.00% | – |
| Q4 2016 | $474,000 | -74.8% | 9,628 | -69.3% | 0.00% | -100.0% |
| Q3 2016 | $1,880,000 | +71.2% | 31,343 | -0.2% | 0.00% | +100.0% |
| Q2 2016 | $1,098,000 | -53.5% | 31,398 | -45.3% | 0.00% | -66.7% |
| Q1 2016 | $2,362,000 | -39.1% | 57,392 | +0.8% | 0.00% | -25.0% |
| Q4 2015 | $3,878,000 | +54.4% | 56,943 | +2.8% | 0.00% | +33.3% |
| Q3 2015 | $2,512,000 | – | 55,404 | – | 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% |