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Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.58
-0.19 (-1.94%)
At close: Mar 11, 2026, 4:00 PM EDT
9.58
0.00 (0.00%)
After-hours: Mar 11, 2026, 5:43 PM EDT

Prothena Corporation Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Mar 11, 20269.709.849.269.68--0.93%392,417
Mar 10, 202610.2110.279.689.779.77-0.41%628,373
Mar 9, 20269.279.959.229.819.812.29%619,221
Mar 6, 20269.249.649.249.599.591.37%651,790
Mar 5, 20269.7010.069.369.469.46-4.06%468,876
Mar 4, 20269.369.969.369.869.865.34%521,934
Mar 3, 20269.099.628.959.369.36-0.43%553,435
Mar 2, 20269.099.628.979.409.408.42%811,068
Feb 27, 20268.538.798.488.678.670.35%385,551
Feb 26, 20268.888.968.638.648.64-2.70%353,586
Feb 25, 20269.009.118.538.888.88-1.00%490,497
Feb 24, 20269.039.308.758.978.97-1.10%448,814
Feb 23, 20269.009.348.819.079.070.55%465,762
Feb 20, 20269.389.598.209.029.02-0.11%786,409
Feb 19, 20269.069.208.809.039.03-0.66%349,703
Feb 18, 20268.819.238.819.099.091.45%305,229
Feb 17, 20268.969.218.808.968.96-374,772
Feb 13, 20268.859.248.858.968.961.24%290,008
Feb 12, 20268.939.048.728.858.85-0.90%333,923
Feb 11, 20269.019.098.658.938.93-0.33%271,111
Feb 10, 20268.819.128.778.968.961.13%329,528
Feb 9, 20268.909.048.598.868.86-0.56%356,096
Feb 6, 20268.588.998.568.918.916.71%581,028
Feb 5, 20268.869.058.238.358.35-6.07%518,973
Feb 4, 20268.779.048.488.898.891.25%451,551
Feb 3, 20268.909.058.618.788.78-1.46%280,865
Feb 2, 20268.798.958.398.918.911.14%556,572
Jan 30, 20268.989.078.658.818.81-2.76%389,955
Jan 29, 20269.159.508.959.069.06-0.88%362,299
Jan 28, 20269.699.789.109.149.14-6.06%411,568
Jan 27, 20269.9210.099.689.739.73-2.11%391,846
Jan 26, 20269.9410.269.779.949.94-0.60%470,287
Jan 23, 202610.3010.539.9910.0010.00-3.29%659,527
Jan 22, 20269.6810.359.6710.3410.346.82%512,235
Jan 21, 20269.289.729.249.689.684.65%591,125
Jan 20, 20269.129.559.009.259.25-1.07%630,848
Jan 16, 20269.299.458.949.359.350.97%740,512
Jan 15, 20269.169.288.919.269.260.65%601,967
Jan 14, 20268.949.268.849.209.202.45%398,465
Jan 13, 20268.779.068.778.988.980.79%470,366
Jan 12, 20269.169.168.658.918.91-3.05%585,586
Jan 9, 20269.199.349.119.199.191.55%401,916
Jan 8, 20269.039.168.959.059.05-0.88%375,982
Jan 7, 20269.009.478.969.139.131.78%467,536
Jan 6, 20269.019.148.898.978.97-1.43%636,208
Jan 5, 20269.249.248.929.109.10-1.09%539,121
Jan 2, 20269.569.699.079.209.20-3.66%526,643
Dec 31, 20259.309.569.249.559.552.58%466,240
Dec 30, 20259.459.529.299.319.31-1.79%353,433
Dec 29, 20259.499.559.349.489.48-0.63%493,479