Prothena Corp. PLC historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2026-10-23 | 8.240 | 8.250 | 8.000 | 8.250 | 8.250 | 55 |
| 2026-10-22 | 8.010 | 8.190 | 8.010 | 8.180 | 8.180 | 783 |
| 2026-10-21 | 8.250 | 8.504 | 8.135 | 8.135 | 8.135 | 1,887 |
| 2026-10-20 | 8.760 | 8.760 | 8.760 | 8.760 | 8.760 | 28 |
| 2026-10-19 | 8.400 | 8.610 | 8.330 | 8.390 | 8.390 | 716 |
| 2026-10-16 | 8.580 | 8.760 | 8.270 | 8.342 | 8.342 | 1,157 |
| 2026-10-15 | 8.540 | 8.540 | 8.330 | 8.330 | 8.330 | 11 |
| 2026-10-14 | 8.340 | 8.424 | 8.340 | 8.400 | 8.400 | 82 |
| 2026-10-13 | 8.456 | 8.456 | 8.380 | 8.380 | 8.380 | 203 |
| 2026-10-12 | 8.910 | 9.100 | 8.440 | 8.440 | 8.440 | 1,629 |
| 2026-10-09 | 8.828 | 9.250 | 8.788 | 9.250 | 9.250 | 3,051 |
| 2026-10-08 | 8.430 | 8.770 | 8.420 | 8.770 | 8.770 | 4,561 |
| 2026-10-07 | 8.120 | 8.375 | 7.900 | 8.351 | 8.351 | 5,038 |
| 2026-10-06 | 8.184 | 8.184 | 7.818 | 8.068 | 8.068 | 11,595 |
| 2026-10-05 | 8.357 | 8.370 | 7.941 | 7.941 | 7.941 | 2,065 |
| 2026-10-02 | 8.497 | 8.497 | 8.497 | 8.497 | 8.497 | 1,225 |
| 2026-10-01 | 8.534 | 8.546 | 8.410 | 8.410 | 8.410 | 244 |
| 2026-09-30 | 8.910 | 8.910 | 8.530 | 8.610 | 8.610 | 66 |
| 2026-09-29 | 8.660 | 8.660 | 8.660 | 8.660 | 8.660 | 20 |
| 2026-09-28 | 8.330 | 8.774 | 8.250 | 8.774 | 8.774 | 504 |
| 2026-09-25 | 8.418 | 8.418 | 8.360 | 8.370 | 8.370 | 288 |
| 2026-09-24 | 8.760 | 8.760 | 8.338 | 8.338 | 8.338 | 1,923 |
| 2026-09-23 | 9.010 | 9.010 | 8.670 | 8.670 | 8.670 | 517 |
| 2026-09-22 | 8.750 | 8.950 | 8.550 | 8.862 | 8.862 | 373 |
| 2026-09-21 | 8.580 | 8.650 | 8.560 | 8.560 | 8.560 | 21 |
| 2026-09-18 | 8.550 | 8.550 | 8.300 | 8.440 | 8.440 | 644 |
| 2026-09-17 | 8.390 | 8.555 | 8.333 | 8.555 | 8.555 | 1,686 |
| 2026-09-16 | 8.330 | 8.630 | 8.242 | 8.328 | 8.328 | 3,184 |
| 2026-09-15 | 8.485 | 8.485 | 8.380 | 8.480 | 8.480 | 201 |
| 2026-09-14 | 8.640 | 8.944 | 8.640 | 8.910 | 8.910 | 12 |
| 2026-09-11 | 8.990 | 8.995 | 8.770 | 8.770 | 8.770 | 126 |
| 2026-09-10 | 9.250 | 9.250 | 9.109 | 9.109 | 9.109 | 226 |
| 2026-09-09 | 9.400 | 9.440 | 9.240 | 9.285 | 9.285 | 1,003 |
| 2026-09-08 | 9.810 | 9.810 | 9.380 | 9.590 | 9.590 | 1,045 |
| 2026-09-04 | 9.640 | 9.640 | 9.640 | 9.640 | 9.640 | 1 |
| 2026-09-03 | 9.580 | 9.605 | 9.580 | 9.598 | 9.598 | 73 |
| 2026-09-02 | 9.500 | 9.720 | 9.500 | 9.620 | 9.620 | 124 |
| 2026-09-01 | 9.330 | 9.500 | 9.280 | 9.500 | 9.500 | 290 |
| 2026-08-31 | 9.100 | 9.210 | 9.100 | 9.160 | 9.160 | 13 |
| 2026-08-28 | 9.080 | 9.420 | 9.080 | 9.300 | 9.300 | 30 |
| 2026-08-27 | 9.060 | 9.210 | 9.000 | 9.040 | 9.040 | 223 |
| 2026-08-26 | 9.315 | 9.540 | 9.200 | 9.260 | 9.260 | 254 |
| 2026-08-25 | 9.620 | 9.820 | 9.478 | 9.510 | 9.510 | 819 |
| 2026-08-24 | 9.550 | 9.620 | 9.250 | 9.250 | 9.250 | 252 |
| 2026-08-21 | 9.200 | 9.284 | 9.130 | 9.284 | 9.284 | 207 |
| 2026-08-20 | 9.130 | 9.130 | 8.750 | 8.788 | 8.788 | 492 |
| 2026-08-19 | 9.000 | 9.200 | 9.000 | 9.060 | 9.060 | 10 |
| 2026-08-18 | 9.050 | 9.050 | 8.602 | 8.602 | 8.602 | 28 |
| 2026-08-17 | 8.834 | 8.860 | 8.820 | 8.834 | 8.834 | 305 |
| 2026-08-14 | 8.980 | 8.980 | 8.910 | 8.970 | 8.970 | 147 |
| 2026-08-13 | 9.292 | 9.292 | 9.200 | 9.200 | 9.200 | 21 |
| 2026-08-12 | 9.223 | 9.300 | 9.182 | 9.190 | 9.190 | 1,346 |
| 2026-08-11 | 9.157 | 9.157 | 8.895 | 9.122 | 9.122 | 316 |
| 2026-08-10 | 8.750 | 8.880 | 8.540 | 8.730 | 8.730 | 767 |
| 2026-08-07 | 8.450 | 8.740 | 8.310 | 8.740 | 8.740 | 154 |
| 2026-08-06 | 8.423 | 8.750 | 8.330 | 8.330 | 8.330 | 1,968 |
| 2026-08-05 | 8.490 | 8.700 | 8.470 | 8.500 | 8.500 | 592 |
| 2026-08-04 | 8.384 | 8.580 | 8.338 | 8.540 | 8.540 | 96 |
| 2026-08-03 | 8.280 | 8.280 | 8.000 | 8.279 | 8.279 | 91 |
| 2026-07-31 | 8.100 | 8.100 | 8.100 | 8.100 | 8.100 | 6 |
Page 1 of 2 · 64 trading daysOlder →
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.