Prothena shares owned by Russell Investments
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Russell Investments
from 13F filings
Historical chart of Russell Investments investment in Prothena
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All positions including Prothena held by Russell Investments consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Prothena by Russell Investments
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $1.2M | 128k | 9.76 |
| 2025-06-30 | $584k | 96k | 6.07 |
| 2025-03-31 | $15k | 1.2k | 12.38 |
| 2024-12-31 | $12k | 881 | 13.85 |
| 2024-09-30 | $17k | 995 | 16.73 |
| 2024-06-30 | $36k | 1.8k | 20.64 |
| 2024-03-31 | $3.2k | 130 | 24.77 |
| 2023-12-31 | $14k | 382 | 36.34 |
| 2021-12-31 | $1.2M | 24k | 49.38 |
| 2021-09-30 | $249k | 3.5k | 71.22 |
| 2021-03-31 | $1.6M | 65k | 25.08 |
| 2020-12-31 | $1.1M | 93k | 12.00 |
| 2020-09-30 | $961k | 96k | 9.98 |
| 2020-06-30 | $1.2M | 112k | 10.45 |
| 2020-03-31 | $997k | 94k | 10.66 |
| 2019-12-31 | $1.3M | 81k | 15.82 |
| 2019-09-30 | $428k | 55k | 7.84 |
| 2019-06-30 | $673k | 64k | 10.60 |
| 2019-03-31 | $957k | 79k | 12.14 |
| 2018-12-31 | $593k | 58k | 10.31 |
| 2018-09-30 | $676k | 52k | 13.07 |
| 2018-06-30 | $467k | 32k | 14.56 |
| 2018-03-31 | $1.2M | 32k | 36.76 |
| 2017-12-31 | $840k | 22k | 38.00 |
| 2017-09-30 | $2.4M | 37k | 64.76 |
| 2017-06-30 | $1.8M | 34k | 54.14 |
| 2017-03-31 | $672k | 12k | 55.82 |
| 2016-12-31 | $528k | 11k | 49.54 |