PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 129 filers reported holding PROTHENA CORP PLC in Q3 2019. The put-call ratio across all filers is 0.21 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2024 | $857,281 | -11.0% | 41,535 | +6.8% | 0.00% | – |
| Q1 2024 | $962,935 | -31.0% | 38,875 | +1.2% | 0.00% | – |
| Q4 2023 | $1,395,347 | -24.9% | 38,397 | -0.3% | 0.00% | -100.0% |
| Q3 2023 | $1,857,722 | -27.9% | 38,502 | +2.0% | 0.00% | 0.0% |
| Q2 2023 | $2,577,433 | +46.3% | 37,748 | +3.8% | 0.00% | 0.0% |
| Q1 2023 | $1,762,320 | +71.7% | 36,359 | +113.4% | 0.00% | – |
| Q4 2022 | $1,026,298 | -0.1% | 17,034 | +0.6% | 0.00% | – |
| Q3 2022 | $1,027,000 | +135.0% | 16,932 | +5.4% | 0.00% | – |
| Q2 2022 | $437,000 | -18.6% | 16,069 | +9.5% | 0.00% | – |
| Q1 2022 | $537,000 | -24.7% | 14,675 | +1.6% | 0.00% | – |
| Q4 2021 | $713,000 | -28.8% | 14,448 | +2.6% | 0.00% | – |
| Q3 2021 | $1,002,000 | +144.4% | 14,082 | +76.3% | 0.00% | – |
| Q2 2021 | $410,000 | +129.1% | 7,987 | +12.1% | 0.00% | – |
| Q1 2021 | $179,000 | +123.8% | 7,128 | +7.2% | 0.00% | – |
| Q4 2020 | $80,000 | +21.2% | 6,649 | 0.0% | 0.00% | – |
| Q3 2020 | $66,000 | -21.4% | 6,649 | -17.3% | 0.00% | – |
| Q2 2020 | $84,000 | -11.6% | 8,036 | -9.6% | 0.00% | – |
| Q1 2020 | $95,000 | -43.1% | 8,894 | -15.8% | 0.00% | – |
| Q4 2019 | $167,000 | +101.2% | 10,560 | 0.0% | 0.00% | – |
| Q3 2019 | $83,000 | 0.0% | 10,560 | +34.6% | 0.00% | – |
| Q2 2019 | $83,000 | -12.6% | 7,846 | 0.0% | 0.00% | – |
| Q1 2019 | $95,000 | -37.1% | 7,846 | -46.3% | 0.00% | – |
| Q4 2018 | $151,000 | -15.2% | 14,611 | +7.5% | 0.00% | – |
| Q3 2018 | $178,000 | -10.1% | 13,587 | 0.0% | 0.00% | – |
| Q2 2018 | $198,000 | -61.9% | 13,587 | -4.1% | 0.00% | – |
| Q1 2018 | $520,000 | -17.5% | 14,169 | -15.6% | 0.00% | – |
| Q4 2017 | $630,000 | -38.2% | 16,787 | +6.5% | 0.00% | -100.0% |
| Q3 2017 | $1,020,000 | +37.8% | 15,761 | +15.0% | 0.00% | 0.0% |
| Q2 2017 | $740,000 | +5.7% | 13,708 | +8.9% | 0.00% | 0.0% |
| Q1 2017 | $700,000 | +11.3% | 12,588 | -1.2% | 0.00% | 0.0% |
| Q4 2016 | $629,000 | – | 12,743 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | $580,125,000 | 21.68% |
| Prosight Management, LP | 422,000 | $21,695,000 | 13.57% |
| First Light Asset Management, LLC | 1,927,829 | $99,110,000 | 5.95% |
| Palo Alto Investors LP | 1,731,482 | $89,015,000 | 4.90% |
| DCF Advisers, LLC | 61,750 | $3,175,000 | 1.12% |
| APOGEM CAPITAL LLC | 32,104 | $1,650,000 | 1.05% |
| EAM Global Investors LLC | 70,255 | $3,612,000 | 1.00% |
| Rock Springs Capital Management LP | 950,091 | $48,844,000 | 0.96% |
| Atika Capital Management LLC | 234,000 | $12,030,000 | 0.95% |
| Birchview Capital, LP | 30,247 | $1,555,000 | 0.93% |