PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 146 filers reported holding PROTHENA CORP PLC in Q1 2021. The put-call ratio across all filers is 0.25 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $12,574 | -43.1% | 260,600 | -19.5% | 0.02% | -34.4% |
| Q2 2023 | $22,109 | +12.0% | 323,800 | -20.5% | 0.03% | +23.1% |
| Q1 2023 | $19,742 | -31.0% | 407,300 | -14.2% | 0.03% | -33.3% |
| Q4 2022 | $28,613 | -99.9% | 474,900 | -25.4% | 0.04% | -29.1% |
| Q3 2022 | $38,615,000 | +107.3% | 636,900 | -7.2% | 0.06% | +150.0% |
| Q2 2022 | $18,625,000 | +29.2% | 686,000 | +74.0% | 0.02% | +29.4% |
| Q1 2022 | $14,416,000 | +9.4% | 394,200 | +47.8% | 0.02% | +6.2% |
| Q4 2021 | $13,180,000 | -28.1% | 266,800 | +3.7% | 0.02% | -33.3% |
| Q3 2021 | $18,320,000 | +49.5% | 257,200 | +7.9% | 0.02% | +60.0% |
| Q2 2021 | $12,251,000 | +68.7% | 238,300 | -17.5% | 0.02% | +66.7% |
| Q1 2021 | $7,260,000 | +92.5% | 289,000 | -8.0% | 0.01% | +125.0% |
| Q4 2020 | $3,771,000 | +42.4% | 314,000 | +18.4% | 0.00% | +33.3% |
| Q3 2020 | $2,649,000 | -34.7% | 265,200 | -31.6% | 0.00% | -25.0% |
| Q2 2020 | $4,058,000 | +346.9% | 387,962 | +357.0% | 0.00% | +300.0% |
| Q1 2020 | $908,000 | -17.0% | 84,900 | +22.9% | 0.00% | 0.0% |
| Q4 2019 | $1,094,000 | +209.9% | 69,100 | +53.6% | 0.00% | – |
| Q3 2019 | $353,000 | +127.7% | 45,000 | +251.6% | 0.00% | – |
| Q1 2019 | $155,000 | -79.4% | 12,800 | -77.7% | 0.00% | -100.0% |
| Q3 2018 | $751,000 | -53.1% | 57,400 | +34.4% | 0.00% | -50.0% |
| Q4 2017 | $1,601,000 | -74.1% | 42,700 | -52.9% | 0.00% | -84.6% |
| Q4 2015 | $6,171,000 | +274.0% | 90,600 | +148.9% | 0.01% | +225.0% |
| Q3 2015 | $1,650,000 | +330.8% | 36,400 | +110.4% | 0.00% | +300.0% |
| Q3 2014 | $383,000 | -67.3% | 17,300 | -66.7% | 0.00% | -66.7% |
| Q2 2014 | $1,170,000 | -61.4% | 51,900 | -34.4% | 0.00% | -57.1% |
| Q1 2014 | $3,031,000 | +76.9% | 79,112 | +22.5% | 0.01% | +75.0% |
| Q4 2013 | $1,713,000 | – | 64,600 | – | 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% |