Prothena Corp. PLC historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2026-02-09 | 8.900 | 8.976 | 8.880 | 8.880 | 8.880 | 1,266 |
| 2026-02-06 | 8.580 | 8.920 | 8.580 | 8.897 | 8.897 | 345 |
| 2026-02-05 | 8.860 | 8.940 | 8.833 | 8.833 | 8.833 | 1,389 |
| 2026-02-04 | 8.950 | 8.950 | 8.726 | 8.726 | 8.726 | 149 |
| 2026-02-03 | 8.920 | 8.920 | 8.663 | 8.663 | 8.663 | 192 |
| 2026-02-02 | 8.790 | 8.880 | 8.762 | 8.833 | 8.833 | 833 |
| 2026-01-30 | 8.980 | 9.320 | 8.730 | 8.730 | 8.730 | 398 |
| 2026-01-29 | 9.080 | 9.290 | 8.960 | 8.990 | 8.990 | 15,616 |
| 2026-01-28 | 9.920 | 9.920 | 9.320 | 9.458 | 9.458 | 322 |
| 2026-01-27 | 10.060 | 10.060 | 9.920 | 9.960 | 9.960 | 1,182 |
| 2026-01-26 | 9.900 | 10.216 | 9.590 | 10.160 | 10.160 | 2,246 |
| 2026-01-23 | 10.350 | 10.447 | 10.264 | 10.270 | 10.270 | 455 |
| 2026-01-22 | 9.680 | 10.148 | 9.610 | 10.094 | 10.094 | 2,907 |
| 2026-01-21 | 9.278 | 9.600 | 9.210 | 9.376 | 9.376 | 160 |
| 2026-01-20 | 9.120 | 9.296 | 9.000 | 9.296 | 9.296 | 375 |
| 2026-01-19 | 9.350 | 9.350 | 9.350 | 9.350 | 9.350 | 0 |
| 2026-01-16 | 9.140 | 9.350 | 9.140 | 9.350 | 9.350 | 10 |
| 2026-01-15 | 9.160 | 9.260 | 8.965 | 8.965 | 8.965 | 25 |
| 2026-01-14 | 8.940 | 9.200 | 8.730 | 9.146 | 9.146 | 352 |
| 2026-01-13 | 8.770 | 8.930 | 8.720 | 8.842 | 8.842 | 278 |
| 2026-01-12 | 9.160 | 9.160 | 8.765 | 8.765 | 8.765 | 120 |
| 2026-01-09 | 9.060 | 9.217 | 9.040 | 9.122 | 9.122 | 489 |
| 2026-01-08 | 9.190 | 9.190 | 9.190 | 9.190 | 9.190 | 0 |
| 2026-01-07 | 9.190 | 9.190 | 9.190 | 9.190 | 9.190 | 175 |
| 2026-01-06 | 8.990 | 9.140 | 8.988 | 8.988 | 8.988 | 1,763 |
| 2026-01-05 | 9.240 | 9.240 | 8.965 | 8.988 | 8.988 | 1,807 |
| 2026-01-02 | 9.560 | 9.640 | 9.156 | 9.156 | 9.156 | 674 |
| 2025-12-31 | 9.316 | 9.453 | 9.316 | 9.453 | 9.453 | 221 |
| 2025-12-30 | 9.450 | 9.450 | 9.310 | 9.335 | 9.335 | 50 |
| 2025-12-29 | 9.600 | 9.600 | 9.490 | 9.490 | 9.490 | 78 |
| 2025-12-24 | 9.612 | 9.612 | 9.612 | 9.612 | 9.612 | 50 |
| 2025-12-23 | 9.520 | 9.520 | 9.330 | 9.397 | 9.397 | 1,263 |
| 2025-12-22 | 9.160 | 9.769 | 9.140 | 9.769 | 9.769 | 1,530 |
| 2025-12-19 | 9.460 | 9.460 | 9.380 | 9.436 | 9.436 | 1,339 |
| 2025-12-18 | 9.450 | 9.680 | 9.450 | 9.501 | 9.501 | 173 |
| 2025-12-17 | 9.750 | 9.750 | 9.690 | 9.712 | 9.712 | 321 |
| 2025-12-16 | 9.840 | 9.840 | 9.500 | 9.500 | 9.500 | 2,336 |
| 2025-12-15 | 10.370 | 10.490 | 9.990 | 10.060 | 10.060 | 2,409 |
| 2025-12-12 | 10.456 | 10.490 | 10.264 | 10.346 | 10.346 | 70 |
| 2025-12-11 | 9.710 | 10.415 | 9.710 | 10.290 | 10.290 | 932 |
| 2025-12-10 | 10.490 | 10.490 | 9.724 | 10.130 | 10.130 | 1,396 |
| 2025-12-09 | 10.650 | 11.040 | 10.482 | 10.570 | 10.570 | 1,223 |
| 2025-12-08 | 11.200 | 11.200 | 10.880 | 10.880 | 10.880 | 206 |
| 2025-12-05 | 11.050 | 11.380 | 11.050 | 11.080 | 11.080 | 340 |
| 2025-12-04 | 11.040 | 11.540 | 11.040 | 11.338 | 11.338 | 1,402 |
| 2025-12-03 | 10.570 | 11.394 | 10.540 | 11.350 | 11.350 | 986 |
| 2025-12-02 | 10.530 | 10.540 | 10.285 | 10.312 | 10.312 | 2,063 |
| 2025-12-01 | 10.970 | 11.120 | 10.442 | 10.450 | 10.450 | 3,938 |
| 2025-11-28 | 10.270 | 10.800 | 10.270 | 10.760 | 10.760 | 552 |
| 2025-11-27 | 10.422 | 10.422 | 10.422 | 10.422 | 10.422 | 0 |
| 2025-11-26 | 10.480 | 10.621 | 10.422 | 10.422 | 10.422 | 115 |
| 2025-11-25 | 10.500 | 10.583 | 10.470 | 10.583 | 10.583 | 1,219 |
| 2025-11-24 | 10.550 | 10.740 | 10.452 | 10.476 | 10.476 | 369 |
| 2025-11-21 | 9.985 | 10.470 | 9.907 | 10.470 | 10.470 | 547 |
| 2025-11-20 | 10.120 | 10.353 | 10.012 | 10.012 | 10.012 | 512 |
| 2025-11-19 | 10.375 | 10.375 | 10.080 | 10.120 | 10.120 | 630 |
| 2025-11-18 | 10.180 | 10.290 | 9.870 | 10.290 | 10.290 | 2,155 |
| 2025-11-17 | 9.940 | 10.230 | 9.940 | 10.192 | 10.192 | 1,308 |
| 2025-11-14 | 10.040 | 10.246 | 10.040 | 10.120 | 10.120 | 210 |
| 2025-11-13 | 10.830 | 10.830 | 10.280 | 10.280 | 10.280 | 175 |
Stock splits
No stock splits on record.
Dividends
No dividends on record.
Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.