Prothena shares owned by NISA Investment Advisors
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by NISA Investment Advisors
from 13F filings
Historical chart of NISA Investment Advisors investment in Prothena
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Quarterly reported holdings in Prothena by NISA Investment Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $5.8k | 592 | 9.76 |
| 2025-06-30 | $3.2k | 526 | 6.07 |
| 2025-03-31 | $15k | 1.2k | 12.38 |
| 2024-12-31 | $14k | 980 | 13.85 |
| 2024-09-30 | $20k | 1.2k | 16.73 |
| 2024-06-30 | $22k | 1.0k | 20.64 |
| 2024-03-31 | $24k | 950 | 24.77 |
| 2023-12-31 | $33k | 900 | 36.34 |
| 2023-09-30 | $73k | 1.5k | 48.25 |
| 2023-06-30 | $102k | 1.5k | 68.28 |
| 2023-03-31 | $47k | 970 | 48.45 |
| 2022-12-31 | $32k | 525 | 60.95 |
| 2022-09-30 | $32k | 525 | 60.95 |
| 2022-06-30 | $14k | 500 | 28.00 |
| 2022-03-31 | $18k | 500 | 36.00 |
| 2021-12-31 | $119k | 3.5k | 34.21 |
| 2021-09-30 | $73k | 1.0k | 70.87 |
| 2021-06-30 | $53k | 1.0k | 51.46 |
| 2021-03-31 | $13k | 500 | 26.00 |
| 2020-09-30 | $6.0k | 575 | 10.43 |
| 2020-06-30 | $6.0k | 575 | 10.43 |
| 2020-03-31 | $6.0k | 575 | 10.43 |
| 2019-12-31 | $9.0k | 575 | 15.65 |
| 2019-09-30 | $5.0k | 575 | 8.70 |
| 2019-06-30 | $3.0k | 255 | 11.76 |
| 2019-03-31 | $242k | 20k | 12.13 |
| 2018-12-31 | $206k | 20k | 10.32 |
| 2018-09-30 | $3.0k | 255 | 11.76 |
| 2018-06-30 | $7.0k | 485 | 14.43 |
| 2018-03-31 | $6.0k | 175 | 34.29 |