PRTA
Prothena Corp (PRTA)
NASDAQ
$8.86-$0.33 (-3.58%)
Price as of Jun 03, 2026 4:22 PM EDT
  • $533.0M
    Market Cap
  • 90.27%
    1-Year Change
  • Biotechnology
    Industry
  • 1 Month
    -14.83%
    Low Price$9.07
    High Price$11.19
  • 3 Months
    -2.85%
    Low Price$8.54
    High Price$11.51
  • 1 Year
    +88.32%
    Low Price$4.88
    High Price$11.51
Date
Open
High
Low
Close
Change (%)
Volume
06/02/2026
9.59
9.59
9.12
9.19
-4.17%
439,010
06/01/2026
10.03
10.07
9.50
9.59
-5.80%
457,805
05/29/2026
9.93
10.24
9.80
10.18
+2.00%
501,434
05/28/2026
9.95
10.05
9.93
9.98
-0.50%
281,818
05/27/2026
10.11
10.26
10.01
10.03
-0.30%
616,187
05/26/2026
9.84
10.07
9.45
10.06
+2.34%
918,666
05/22/2026
9.36
10.00
9.36
9.83
+4.46%
510,853
05/21/2026
9.16
9.42
9.04
9.41
+0.64%
388,741
05/20/2026
9.09
9.41
9.09
9.35
+3.09%
624,875
05/19/2026
9.61
9.84
9.02
9.07
-5.42%
627,307
05/18/2026
9.66
10.09
9.53
9.59
-1.74%
650,972
05/15/2026
9.73
9.86
9.46
9.76
-1.01%
700,063
05/14/2026
9.60
9.88
9.42
9.86
+2.71%
452,435
05/13/2026
9.33
9.73
9.28
9.60
+1.80%
530,782
05/12/2026
9.67
9.82
9.29
9.43
-2.48%
495,103
05/11/2026
10.79
10.88
9.46
9.67
-9.88%
932,830
05/08/2026
11.00
11.80
10.62
10.73
+2.00%
798,769
05/07/2026
11.10
11.21
10.40
10.52
-5.90%
443,144
05/07/2026
$0.60 Earnings
05/06/2026
11.19
11.30
11.02
11.18
-0.09%
333,876
05/05/2026
10.89
11.25
10.89
11.19
+3.71%
306,816
05/04/2026
10.58
11.00
10.55
10.79
+1.41%
592,359
05/01/2026
11.04
11.14
10.64
10.64
-3.80%
516,354
04/30/2026
10.89
11.12
10.84
11.06
+1.75%
319,520
04/29/2026
11.46
11.46
10.74
10.87
-5.56%
397,881
04/28/2026
10.84
11.57
10.83
11.51
+6.67%
439,891
04/27/2026
10.71
11.12
10.71
10.79
+0.37%
314,337
04/24/2026
10.65
10.82
10.40
10.75
+0.19%
287,830
04/23/2026
10.69
11.07
10.60
10.73
+0.09%
474,683
04/22/2026
10.69
10.85
10.61
10.72
+0.47%
350,784
04/21/2026
10.78
10.78
10.48
10.67
-1.11%
451,035
04/20/2026
10.82
10.97
10.77
10.79
-1.01%
333,298
04/17/2026
10.71
10.99
10.70
10.90
+3.61%
486,483
04/16/2026
10.78
10.85
10.45
10.52
-2.77%
298,913
04/15/2026
10.62
10.87
10.51
10.82
+1.98%
409,927
04/14/2026
10.34
10.67
10.34
10.61
+2.91%
370,945
04/13/2026
10.49
10.55
10.18
10.31
-1.81%
334,053
04/10/2026
10.60
10.60
10.37
10.50
-0.76%
319,034
04/09/2026
10.47
10.70
10.38
10.58
-0.66%
414,710
04/08/2026
10.48
10.68
10.29
10.65
+2.80%
454,454
04/07/2026
9.98
10.37
9.80
10.36
+3.19%
481,374
04/06/2026
9.91
10.11
9.88
10.04
+1.83%
412,513
04/02/2026
9.75
10.08
9.51
9.86
-1.69%
849,122
04/01/2026
9.84
10.12
9.80
10.03
+3.19%
593,297
03/31/2026
9.33
9.86
9.33
9.72
+5.08%
671,532
03/30/2026
9.24
9.50
9.11
9.25
-0.11%
416,193
03/27/2026
9.42
9.62
9.14
9.26
-2.73%
430,062
03/26/2026
9.19
9.68
9.16
9.52
+2.26%
452,736
03/25/2026
8.84
9.32
8.82
9.31
+6.64%
543,667
03/24/2026
8.75
8.96
8.49
8.73
-1.02%
534,726
03/23/2026
8.83
9.04
8.76
8.82
+0.80%
487,557
03/20/2026
8.54
8.76
8.44
8.75
+2.46%
1,401,661
03/19/2026
8.54
8.63
8.38
8.54
-0.58%
467,774
03/18/2026
8.94
8.94
8.53
8.59
-4.56%
495,892
03/17/2026
9.10
9.20
8.96
9.00
-1.85%
467,125
03/16/2026
9.27
9.32
9.06
9.17
-0.43%
511,792
03/13/2026
9.40
9.54
9.00
9.21
-1.07%
584,493
03/12/2026
9.48
9.48
9.09
9.31
-2.82%
737,000
03/11/2026
9.70
9.84
9.26
9.58
-1.94%
701,241
03/10/2026
10.21
10.27
9.68
9.77
-0.41%
628,373
03/09/2026
9.27
9.95
9.22
9.81
+2.29%
626,457
03/06/2026
9.24
9.64
9.24
9.59
+1.37%
651,790
03/05/2026
9.70
10.06
9.36
9.46
-4.06%
509,804
03/04/2026
9.36
9.96
9.36
9.86
+5.34%
543,331
03/03/2026
9.09
9.62
8.95
9.36
-0.43%
553,435
03/02/2026
9.09
9.62
8.97
9.40
+8.42%
811,088
02/27/2026
8.53
8.79
8.48
8.67
+0.35%
439,378
02/26/2026
8.88
8.96
8.63
8.64
-2.70%
355,723
02/25/2026
9.00
9.11
8.53
8.88
-1.00%
490,497
02/24/2026
9.03
9.30
8.75
8.97
-1.10%
448,814
02/23/2026
9.00
9.34
8.81
9.07
+0.55%
465,762
02/20/2026
9.38
9.59
8.20
9.02
-0.11%
786,420
02/19/2026
9.06
9.20
8.80
9.03
-0.66%
349,728
02/19/2026
-$0.40 Earnings
02/18/2026
8.81
9.23
8.81
9.09
+1.45%
307,596
02/17/2026
8.96
9.21
8.80
8.96
0.00%
374,772
02/13/2026
8.85
9.24
8.85
8.96
+1.24%
308,607
02/12/2026
8.93
9.04
8.72
8.85
-0.90%
351,722
02/11/2026
9.01
9.09
8.65
8.93
-0.33%
271,115
02/10/2026
8.81
9.12
8.77
8.96
+1.13%
329,528
02/09/2026
8.90
9.04
8.59
8.86
-0.56%
356,096
02/06/2026
8.58
8.99
8.56
8.91
+6.71%
581,028
02/05/2026
8.86
9.05
8.23
8.35
-6.07%
518,973
02/04/2026
8.77
9.04
8.48
8.89
+1.25%
451,843
02/03/2026
8.90
9.05
8.61
8.78
-1.46%
280,865
02/02/2026
8.79
8.95
8.39
8.91
+1.14%
556,687
01/30/2026
8.98
9.07
8.65
8.81
-2.76%
389,955
01/29/2026
9.15
9.50
8.95
9.06
-0.88%
362,299
01/28/2026
9.69
9.78
9.10
9.14
-6.06%
422,156
01/27/2026
9.92
10.09
9.68
9.73
-2.11%
393,146
01/26/2026
9.94
10.26
9.77
9.94
-0.60%
470,290
01/23/2026
10.30
10.53
9.99
10.00
-3.29%
659,527
01/22/2026
9.68
10.35
9.67
10.34
+6.82%
512,688
01/21/2026
9.28
9.72
9.24
9.68
+4.65%
591,450
01/20/2026
9.12
9.55
9.00
9.25
-1.07%
630,858
01/16/2026
9.29
9.45
8.94
9.35
+0.97%
761,486
01/15/2026
9.16
9.28
8.91
9.26
+0.65%
601,967
01/14/2026
8.94
9.26
8.84
9.20
+2.45%
398,465
01/13/2026
8.77
9.06
8.77
8.98
+0.79%
470,366
01/12/2026
9.16
9.16
8.65
8.91
-3.05%
585,586