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Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
10.02
+0.75 (8.09%)
At close: Jun 26, 2026, 4:00 PM EDT
10.00
-0.02 (-0.20%)
After-hours: Jun 26, 2026, 7:30 PM EDT

Prothena Corporation Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 26, 20269.3210.099.2810.0210.028.09%1,913,868
Jun 25, 20269.429.589.199.279.27-1.38%964,889
Jun 24, 20269.579.879.269.409.40-1.57%477,855
Jun 23, 20269.129.779.129.559.554.37%458,036
Jun 22, 20268.909.278.899.159.152.46%612,353
Jun 18, 20268.639.158.528.938.935.18%1,390,682
Jun 17, 20268.398.728.398.498.492.41%542,367
Jun 16, 20268.168.357.858.298.291.72%585,996
Jun 15, 20268.698.777.938.158.15-1.21%622,341
Jun 12, 20268.268.458.238.258.25-0.12%314,129
Jun 11, 20267.898.467.738.268.264.42%633,585
Jun 10, 20268.428.597.897.917.91-6.61%456,644
Jun 9, 20268.568.878.358.478.47-1.05%491,176
Jun 8, 20268.808.898.538.568.56-2.62%312,807
Jun 5, 20269.259.388.638.798.79-4.97%655,718
Jun 4, 20269.039.459.039.259.253.70%504,475
Jun 3, 20269.219.218.738.928.92-2.94%593,078
Jun 2, 20269.599.599.129.199.19-4.17%438,610
Jun 1, 202610.0310.079.509.599.59-5.80%391,244
May 29, 20269.9310.249.8010.1810.182.00%501,434
May 28, 20269.9510.059.939.989.98-0.50%281,818
May 27, 202610.1110.2610.0110.0310.03-0.30%616,187
May 26, 20269.8410.079.4510.0610.062.34%918,666
May 22, 20269.3610.009.369.839.834.46%510,853
May 21, 20269.169.429.049.419.410.64%388,741
May 20, 20269.099.419.099.359.353.09%624,875
May 19, 20269.619.849.029.079.07-5.42%627,307
May 18, 20269.6610.099.539.599.59-1.74%650,972
May 15, 20269.739.869.469.769.76-1.01%700,063
May 14, 20269.609.889.429.869.862.71%452,435
May 13, 20269.339.739.289.609.601.80%530,784
May 12, 20269.679.829.299.439.43-2.48%495,103
May 11, 202610.7910.889.469.679.67-9.88%932,830
May 8, 202611.0011.8010.6210.7310.732.00%798,769
May 7, 202611.1011.2110.4010.5210.52-5.90%443,144
May 6, 202611.1911.3011.0211.1811.18-0.09%333,877
May 5, 202610.8911.2510.8911.1911.193.71%306,816
May 4, 202610.5811.0010.5510.7910.791.41%592,359
May 1, 202611.0411.1410.6410.6410.64-3.80%516,354
Apr 30, 202610.8911.1210.8411.0611.061.75%319,520
Apr 29, 202611.4611.4610.7410.8710.87-5.56%397,881
Apr 28, 202610.8411.5710.8311.5111.516.67%439,891
Apr 27, 202610.7111.1210.7110.7910.790.37%314,337
Apr 24, 202610.6510.8210.4010.7510.750.19%287,930
Apr 23, 202610.6911.0710.6010.7310.730.09%474,683
Apr 22, 202610.6910.8510.6110.7210.720.47%350,784
Apr 21, 202610.7810.7810.4810.6710.67-1.11%451,072
Apr 20, 202610.8210.9710.7710.7910.79-1.01%333,298
Apr 17, 202610.7110.9910.7010.9010.903.61%486,483
Apr 16, 202610.7810.8510.4510.5210.52-2.77%298,913
Apr 15, 202610.6210.8710.5110.8210.821.98%409,927
Apr 14, 202610.3410.6710.3410.6110.612.91%370,945
Apr 13, 202610.4910.5510.1810.3110.31-1.81%334,063
Apr 10, 202610.6010.6010.3710.5010.50-0.76%319,034
Apr 9, 202610.4710.7010.3810.5810.58-0.66%414,710
Apr 8, 202610.4810.6810.2910.6510.652.80%454,454
Apr 7, 20269.9810.379.8010.3610.363.19%481,374
Apr 6, 20269.9110.119.8810.0410.041.83%412,513
Apr 2, 20269.7510.089.519.869.86-1.69%849,122
Apr 1, 20269.8410.129.8010.0310.033.19%593,297
Mar 31, 20269.339.869.339.729.725.08%671,532
Mar 30, 20269.249.509.119.259.25-0.11%416,193
Mar 27, 20269.429.629.149.269.26-2.73%430,062
Mar 26, 20269.199.689.169.529.522.26%452,736
Mar 25, 20268.849.328.829.319.316.64%543,667
Mar 24, 20268.758.968.498.738.73-1.02%534,726
Mar 23, 20268.839.048.768.828.820.80%487,557
Mar 20, 20268.548.768.448.758.752.46%1,401,607
Mar 19, 20268.548.638.388.548.54-0.58%467,774
Mar 18, 20268.948.958.538.598.59-4.56%495,892
Mar 17, 20269.109.208.969.009.00-1.85%467,125
Mar 16, 20269.279.329.069.179.17-0.43%511,792
Mar 13, 20269.409.549.009.219.21-1.07%584,493
Mar 12, 20269.489.489.099.319.31-2.82%737,000
Mar 11, 20269.709.849.269.589.58-1.94%701,241
Mar 10, 202610.2110.279.689.779.77-0.41%628,373
Mar 9, 20269.279.959.229.819.812.29%626,457
Mar 6, 20269.249.649.249.599.591.37%651,790
Mar 5, 20269.7010.069.369.469.46-4.06%509,804
Mar 4, 20269.369.969.369.869.865.34%543,331
Mar 3, 20269.099.628.959.369.36-0.43%553,435
Mar 2, 20269.099.628.979.409.408.42%811,088
Feb 27, 20268.538.798.488.678.670.35%439,378
Feb 26, 20268.888.968.638.648.64-2.70%355,723
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%786,420
Feb 19, 20269.069.208.809.039.03-0.66%349,728
Feb 18, 20268.819.238.819.099.091.45%307,596
Feb 17, 20268.969.218.808.968.96-374,772
Feb 13, 20268.859.248.858.968.961.24%308,607
Feb 12, 20268.939.048.728.858.85-0.90%351,722
Feb 11, 20269.019.098.658.938.93-0.33%271,115
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%451,843
Feb 3, 20268.909.058.618.788.78-1.46%280,865