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 2021 | $129,000 | +57.3% | 1,813 | +13.7% | 0.01% | +75.0% |
| Q2 2021 | $82,000 | +215.4% | 1,594 | -36.1% | 0.00% | +100.0% |
| Q1 2020 | $26,000 | +766.7% | 2,493 | +1429.4% | 0.00% | – |
| Q4 2019 | $3,000 | -95.2% | 163 | -97.9% | 0.00% | -100.0% |
| Q3 2019 | $62,000 | +67.6% | 7,890 | +119.7% | 0.00% | +33.3% |
| Q2 2019 | $37,000 | +3600.0% | 3,592 | +3804.3% | 0.00% | – |
| Q3 2018 | $1,000 | 0.0% | 92 | +268.0% | 0.00% | – |
| Q1 2018 | $1,000 | -75.0% | 25 | -76.9% | 0.00% | – |
| Q4 2017 | $4,000 | +300.0% | 108 | +260.0% | 0.00% | – |
| Q3 2013 | $1,000 | – | 30 | 0.0% | 0.00% | – |
| Q2 2013 | $0 | – | 30 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 9,426,640 | $98,603,000 | 7.28% |
| Soleus Capital Management, L.P. | 674,603 | $7,056,000 | 4.02% |
| GREAT POINT PARTNERS LLC | 2,082,841 | $21,787,000 | 1.74% |
| LONESTAR CAPITAL MANAGEMENT LLC | 289,020 | $3,023,000 | 0.99% |
| Orbimed Advisors | 3,544,475 | $37,075,000 | 0.52% |
| Campbell & CO Investment Adviser LLC | 37,046 | $388,000 | 0.49% |
| Palo Alto Investors LP | 771,065 | $8,065,000 | 0.48% |
| Rock Springs Capital Management LP | 989,218 | $10,347,000 | 0.28% |
| TANG CAPITAL MANAGEMENT LLC | 273,823 | $2,864,000 | 0.28% |
| Woodline Partners LP | 600,778 | $6,284,000 | 0.25% |