Prothena Corp shares owned by Group One Trading
Quarter-by-quarter ownership of Prothena Corp shares owned by Group One Trading
from 13F filings
Historical chart of Group One Trading investment in Prothena Corp
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Quarterly reported holdings in Prothena Corp by Group One Trading
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $1.6M | 160k | 9.76 |
| 2025-06-30 | $574k | 95k | 6.07 |
| 2025-03-31 | $300k | 24k | 12.38 |
| 2024-12-31 | $429k | 31k | 13.85 |
| 2024-09-30 | $221k | 13k | 16.73 |
| 2024-06-30 | $272k | 13k | 20.64 |
| 2024-03-31 | $545k | 22k | 24.77 |
| 2023-09-30 | $458k | 9.5k | 48.25 |
| 2023-06-30 | $1.7M | 25k | 68.28 |
| 2023-03-31 | $24k | 500 | 48.47 |
| 2022-12-31 | $1.0M | 17k | 60.25 |
| 2022-09-30 | $752k | 12k | 60.65 |
| 2022-03-31 | $179k | 4.9k | 36.53 |
| 2021-12-31 | $459k | 9.3k | 49.35 |
| 2021-09-30 | $128k | 1.8k | 71.11 |
| 2021-06-30 | $648k | 13k | 51.43 |
| 2021-03-31 | $1.5M | 59k | 25.13 |
| 2020-12-31 | $718k | 60k | 12.01 |
| 2020-09-30 | $137k | 14k | 10.00 |
| 2020-06-30 | $133k | 13k | 10.47 |
| 2020-03-31 | $6.0k | 600 | 10.00 |
| 2019-06-30 | $32k | 3.0k | 10.67 |
| 2019-03-31 | $170k | 14k | 12.14 |
| 2018-12-31 | $668k | 65k | 10.29 |
| 2018-09-30 | $1.1M | 88k | 13.09 |
| 2018-06-30 | $2.2M | 153k | 14.58 |
| 2018-03-31 | $2.0M | 55k | 36.70 |
| 2017-12-31 | $285k | 7.6k | 37.50 |
| 2017-09-30 | $2.1M | 32k | 64.78 |
| 2017-06-30 | $666k | 12k | 54.15 |
| 2017-03-31 | $1.2M | 22k | 55.80 |
| 2016-12-31 | $1.7M | 35k | 49.19 |
| 2016-09-30 | $4.6M | 76k | 59.97 |
| 2016-06-30 | $1.2M | 33k | 34.97 |
| 2016-03-31 | $741k | 18k | 41.17 |
| 2015-12-31 | $3.7M | 55k | 68.11 |
| 2015-09-30 | $2.7M | 60k | 45.33 |
| 2015-06-30 | $5.2M | 98k | 52.67 |
| 2015-03-31 | $2.5M | 66k | 38.14 |
| 2014-12-31 | $513k | 25k | 20.77 |
| 2014-09-30 | $849k | 38k | 22.17 |
| 2014-06-30 | $1.3M | 59k | 22.55 |
| 2014-03-31 | $1.5M | 40k | 38.31 |
| 2013-12-31 | $159k | 6.0k | 26.50 |
| 2013-09-30 | $20k | 1.0k | 20.00 |
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