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Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.72
+0.47 (5.08%)
At close: Mar 31, 2026, 4:00 PM EDT
9.71
-0.01 (-0.10%)
Pre-market: Apr 1, 2026, 7:00 AM EDT

Prothena Corporation Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Mar 31, 20269.339.869.339.729.725.08%671,532
Mar 30, 20269.249.509.119.259.25-0.11%416,146
Mar 27, 20269.429.629.149.269.26-2.73%430,062
Mar 26, 20269.199.689.169.529.522.26%452,666
Mar 25, 20268.849.328.829.319.316.64%543,662
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
Feb 2, 20268.798.958.398.918.911.14%556,687
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%422,156
Jan 27, 20269.9210.099.689.739.73-2.11%393,146
Jan 26, 20269.9410.269.779.949.94-0.60%470,290
Jan 23, 202610.3010.539.9910.0010.00-3.29%659,527
Jan 22, 20269.6810.359.6710.3410.346.82%512,688
Jan 21, 20269.289.729.249.689.684.65%591,450
Jan 20, 20269.129.559.009.259.25-1.07%630,858