Prothena shares owned by Thomas Stevens, CFA"
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Thomas Stevens, CFA"
from 13F filings
Historical chart of Thomas Stevens, CFA" investment in Prothena
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Quarterly reported holdings in Prothena by Thomas Stevens, CFA"
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-12-31 | $1000k | 95k | 10.48 |
| 2025-09-30 | $1.2M | 119k | 9.76 |
| 2025-06-30 | $101k | 17k | 6.07 |
| 2022-12-31 | $336k | 5.6k | 60.25 |
| 2022-09-30 | $370k | 6.1k | 60.60 |
| 2021-09-30 | $1.3M | 18k | 71.24 |
| 2021-06-30 | $1.8M | 35k | 51.40 |
| 2021-03-31 | $984k | 39k | 25.12 |
| 2020-12-31 | $475k | 40k | 12.00 |
| 2020-09-30 | $416k | 42k | 9.99 |
| 2020-06-30 | $427k | 41k | 10.47 |
| 2020-03-31 | $211k | 20k | 10.71 |
| 2014-12-31 | $220k | 11k | 20.72 |