PTGX
Protagonist Ther (PTGX)
NASDAQ
$154.25-$0.07 (-0.05%)
Price as of Aug 21, 2026 7:56 PM EDT
  • $10.0B
    Market Cap
  • 168.48%
    1-Year Change
  • Biotechnology
    Industry
  • 1 Month
    +11.58%
    Low Price$132.28
    High Price$158.62
  • 3 Months
    +51.28%
    Low Price$93.23
    High Price$158.62
  • 1 Year
    +168.48%
    Low Price$56.19
    High Price$158.62
Date
Open
High
Low
Close
Change (%)
Volume
08/21/2026
152.10
154.95
150.82
154.32
+2.41%
402,542
08/20/2026
152.45
155.25
148.28
150.69
-2.74%
518,560
08/19/2026
160.81
160.81
154.22
154.94
-1.53%
783,533
08/18/2026
157.96
160.00
156.81
157.34
-0.81%
471,648
08/17/2026
155.11
158.95
153.60
158.62
+2.27%
506,960
08/14/2026
150.23
155.53
149.17
155.10
+2.43%
426,260
08/13/2026
153.15
154.99
150.92
151.42
-0.39%
444,785
08/12/2026
148.21
152.70
147.33
152.01
+2.51%
417,199
08/11/2026
151.88
151.88
147.37
148.29
-1.14%
306,573
08/10/2026
149.31
151.60
147.40
150.00
+2.83%
545,973
08/07/2026
146.18
147.32
144.44
145.87
-0.21%
321,084
08/06/2026
145.01
148.00
139.95
146.18
+6.45%
837,630
08/05/2026
137.49
138.08
135.39
137.32
+1.11%
430,528
08/05/2026
$2.29 Earnings
08/04/2026
133.02
138.05
132.26
135.81
+2.67%
634,667
08/03/2026
135.78
135.98
131.68
132.28
-3.19%
451,166
07/31/2026
138.36
138.37
131.69
136.64
-1.44%
548,764
07/30/2026
131.77
138.95
130.63
138.64
+4.24%
556,392
07/29/2026
136.90
137.43
132.72
133.00
-2.81%
560,652
07/28/2026
136.69
137.00
133.20
136.84
+0.94%
282,383
07/27/2026
136.11
139.92
135.43
135.56
-0.40%
416,781
07/24/2026
136.11
137.20
133.78
136.11
+0.50%
298,402
07/23/2026
133.79
137.33
132.00
135.43
-0.007%
605,784
07/22/2026
139.45
139.45
134.42
135.44
-2.08%
710,439
07/21/2026
133.34
139.72
131.05
138.31
+3.01%
580,567
07/20/2026
141.79
143.29
133.64
134.27
-4.71%
762,738
07/17/2026
131.37
141.08
131.37
140.91
+6.73%
519,116
07/16/2026
135.21
136.56
131.35
132.02
-2.54%
602,064
07/15/2026
128.00
139.22
126.97
135.46
+3.19%
835,520
07/14/2026
131.89
131.95
128.68
131.27
+1.06%
558,598
07/13/2026
130.05
131.36
125.32
129.89
-1.16%
541,062
07/10/2026
137.12
137.12
130.64
131.42
-4.52%
1,060,849
07/09/2026
139.26
141.10
136.99
137.64
-1.73%
1,613,332
07/08/2026
139.50
140.95
136.08
140.07
-0.55%
931,358
07/07/2026
132.59
141.08
130.69
140.85
+7.11%
1,374,383
07/06/2026
131.25
132.79
128.15
131.50
-0.09%
640,087
07/02/2026
125.89
131.87
125.24
131.62
+5.15%
708,390
07/01/2026
122.96
126.04
122.48
125.17
+2.11%
521,761
06/30/2026
122.04
124.72
119.57
122.58
+0.78%
560,872
06/29/2026
121.34
126.59
118.27
121.63
-0.21%
740,406
06/26/2026
122.00
123.43
118.31
121.88
-0.61%
2,593,942
06/25/2026
122.31
126.25
121.48
122.63
+0.39%
1,048,006
06/24/2026
119.38
124.80
118.81
122.15
+2.68%
1,132,331
06/23/2026
114.66
119.85
114.56
118.96
+3.42%
700,455
06/22/2026
113.24
116.57
113.24
115.03
+1.92%
1,193,688
06/18/2026
112.88
114.49
111.17
112.86
+1.27%
1,533,672
06/17/2026
110.84
113.47
110.11
111.44
+0.72%
742,534
06/16/2026
112.83
113.66
108.53
110.64
-1.62%
504,794
06/15/2026
109.10
112.77
109.10
112.46
+2.44%
536,301
06/12/2026
109.85
111.78
109.60
109.78
-0.009%
448,850
06/11/2026
106.28
110.82
106.28
109.79
+3.80%
564,250
06/10/2026
105.50
111.45
104.89
105.77
-0.09%
770,494
06/09/2026
99.76
106.48
98.08
105.87
+8.00%
878,593
06/08/2026
98.95
101.16
96.70
98.03
+0.67%
567,714
06/05/2026
103.14
103.29
96.38
97.38
-5.26%
887,396
06/04/2026
96.39
103.55
96.14
102.79
+7.74%
658,834
06/03/2026
93.93
95.61
93.00
95.41
+2.34%
576,264
06/02/2026
93.84
97.71
92.75
93.23
-1.78%
723,585
06/01/2026
97.88
98.50
93.50
94.92
-4.66%
816,944
05/29/2026
100.64
102.40
98.84
99.56
-0.85%
597,778
05/28/2026
102.74
103.71
99.43
100.41
-1.76%
551,512
05/27/2026
100.05
102.49
98.94
102.21
+2.23%
404,793
05/26/2026
100.03
100.80
97.93
99.98
+0.80%
360,762
05/22/2026
102.01
102.42
98.89
99.19
-2.76%
393,915
05/21/2026
101.13
103.43
98.60
102.01
+1.12%
402,629
05/20/2026
99.03
101.90
98.37
100.88
+2.55%
371,678
05/19/2026
100.25
100.26
96.69
98.37
-2.35%
492,707
05/18/2026
103.22
104.16
100.58
100.74
-1.41%
447,230
05/15/2026
104.22
104.39
101.72
102.18
-3.19%
560,751
05/14/2026
104.31
105.72
101.62
105.55
+1.61%
426,527
05/13/2026
99.58
104.20
98.22
103.88
+3.93%
517,121
05/12/2026
103.50
103.66
98.36
99.95
-3.43%
645,725
05/11/2026
100.14
105.33
99.94
103.50
+4.17%
572,035
05/08/2026
98.51
100.15
97.00
99.36
+0.52%
505,003
05/07/2026
103.55
104.68
98.53
98.85
-4.92%
836,858
05/06/2026
103.00
105.03
98.95
103.97
+4.80%
989,856
05/05/2026
100.32
101.37
97.45
99.21
-0.31%
398,043
05/05/2026
$0.05 Earnings
05/04/2026
98.00
101.08
98.00
99.52
+1.17%
457,421
05/01/2026
99.16
99.47
97.08
98.37
-0.61%
447,698
04/30/2026
99.00
99.76
97.20
98.97
+0.46%
577,600
04/29/2026
100.27
100.35
98.11
98.52
-2.66%
576,818
04/28/2026
99.50
102.47
97.79
101.21
+2.74%
663,207
04/27/2026
100.44
103.42
98.31
98.51
-1.49%
994,654
04/24/2026
102.54
105.94
98.91
100.00
-2.55%
778,708
04/23/2026
106.34
106.98
102.26
102.62
-2.78%
651,593
04/22/2026
106.43
107.00
103.93
105.55
-0.32%
345,935
04/21/2026
104.94
106.45
103.64
105.89
+0.40%
494,946
04/20/2026
105.47
106.46
104.00
105.47
-0.48%
540,470
04/17/2026
105.57
106.90
103.51
105.98
+2.17%
1,006,314
04/16/2026
103.59
104.53
102.46
103.73
-1.62%
417,822
04/15/2026
105.96
106.66
103.02
105.44
+0.69%
770,162
04/14/2026
97.58
104.97
97.58
104.72
+7.33%
849,466
04/13/2026
98.61
101.04
95.40
97.57
-1.26%
1,088,562
04/10/2026
104.28
104.28
98.40
98.82
-5.06%
577,209
04/09/2026
101.45
105.11
101.45
104.09
+1.95%
699,455
04/08/2026
104.28
105.88
101.62
102.09
-1.60%
819,198
04/07/2026
103.43
103.96
101.31
103.75
+0.84%
785,703
04/06/2026
103.72
104.46
101.84
102.89
-0.86%
528,510
04/02/2026
101.59
104.31
101.59
103.78
+0.11%
601,602