UMC
UNITED MICRO SP ADR (UMC)
NYSE
$18.70-$0.19 (-1.01%)
Price as of Oct 23, 2026 8:00 PM EDT
  • $47.4B
    Market Cap
  • 154.82%
    1-Year Change
  • Semiconductors
    Industry
  • 1 Month
    -23.46%
    Low Price$18.53
    High Price$26.27
  • 3 Months
    -9.49%
    Low Price$17.11
    High Price$26.27
  • 1 Year
    +154.82%
    Low Price$6.90
    High Price$27.54
Date
Open
High
Low
Close
Change (%)
Volume
10/23/2026
18.66
19.00
18.53
18.89
+1.94%
7,157,464
10/22/2026
19.07
19.17
18.31
18.53
-6.51%
17,606,452
10/21/2026
19.90
19.98
19.63
19.82
+0.76%
8,297,025
10/20/2026
19.50
19.98
19.35
19.67
-2.04%
9,305,173
10/19/2026
20.55
20.60
19.97
20.08
+1.31%
8,358,023
10/16/2026
20.65
20.65
19.74
19.82
-5.26%
12,916,631
10/15/2026
20.48
20.97
20.25
20.92
-2.24%
14,480,087
10/14/2026
21.85
22.05
21.34
21.40
-4.42%
12,797,844
10/13/2026
21.95
22.40
21.80
22.39
-0.71%
8,712,561
10/12/2026
22.74
22.74
22.31
22.55
-1.79%
7,054,909
10/09/2026
23.19
23.28
22.84
22.96
+0.61%
5,243,544
10/08/2026
23.14
23.32
22.51
22.82
-2.10%
11,901,375
10/07/2026
22.91
23.34
22.85
23.31
+0.52%
8,058,272
10/06/2026
23.54
23.67
23.05
23.19
-3.05%
15,052,066
10/05/2026
23.82
24.15
23.26
23.92
-8.95%
31,819,892
10/02/2026
25.67
26.37
25.52
26.27
+4.20%
10,198,792
10/01/2026
24.85
25.34
24.67
25.21
+2.94%
7,742,933
09/30/2026
24.45
24.69
24.35
24.49
-0.93%
7,101,898
09/29/2026
24.43
25.02
24.11
24.72
+3.65%
10,915,593
09/28/2026
24.08
24.21
23.42
23.85
-1.89%
7,091,953
09/25/2026
24.25
24.54
24.12
24.31
+0.87%
6,334,955
09/24/2026
24.11
24.35
23.80
24.10
-2.35%
6,675,735
09/23/2026
25.28
25.38
24.41
24.68
-4.23%
10,979,775
09/22/2026
25.26
25.80
25.13
25.77
+1.34%
8,421,825
09/21/2026
24.93
25.63
24.64
25.43
+3.33%
11,265,402
09/18/2026
24.45
24.71
23.88
24.61
+0.57%
30,094,936
09/17/2026
23.51
24.55
23.30
24.47
+8.61%
17,755,238
09/16/2026
22.49
22.84
22.25
22.53
+4.26%
11,217,702
09/15/2026
21.89
22.06
21.59
21.61
-1.32%
8,818,958
09/14/2026
22.08
22.26
21.81
21.90
-3.27%
16,299,231
09/11/2026
22.41
22.72
22.32
22.64
+2.35%
7,190,738
09/10/2026
21.94
22.28
21.84
22.12
-2.51%
10,133,005
09/09/2026
22.02
22.70
21.93
22.69
+3.99%
11,203,583
09/08/2026
21.58
22.20
21.58
21.82
+5.06%
11,535,065
09/04/2026
20.48
21.03
20.33
20.77
+4.58%
10,014,225
09/03/2026
19.57
19.95
19.45
19.86
-0.55%
6,069,193
09/02/2026
19.54
20.14
19.49
19.97
-2.44%
8,757,490
09/01/2026
20.43
20.84
20.19
20.47
+2.97%
17,944,694
08/31/2026
20.00
20.31
19.74
19.88
+0.45%
8,837,501
08/28/2026
20.65
20.78
19.59
19.79
+3.78%
19,845,665
08/27/2026
18.80
19.08
18.68
19.07
+0.21%
9,121,513
08/26/2026
19.41
19.46
18.84
19.03
-2.91%
6,789,313
08/25/2026
19.50
20.00
19.42
19.60
+2.89%
10,103,741
08/24/2026
19.50
19.50
18.77
19.05
+3.87%
14,926,891
08/21/2026
18.45
18.61
18.28
18.34
+1.89%
7,306,057
08/20/2026
18.03
18.24
17.88
18.00
-0.66%
10,509,534
08/19/2026
18.80
18.97
17.97
18.12
-1.95%
12,432,541
08/18/2026
18.56
18.76
18.14
18.48
-5.38%
17,459,079
08/17/2026
19.38
19.77
19.27
19.53
+1.98%
7,972,813
08/14/2026
18.94
19.17
18.75
19.15
-1.19%
7,176,746
08/13/2026
19.25
19.72
19.23
19.38
+0.36%
7,682,253
08/12/2026
19.67
19.67
19.30
19.31
+1.95%
10,598,477
08/11/2026
19.35
19.45
18.91
18.94
+0.80%
7,559,435
08/10/2026
19.27
19.35
18.77
18.79
+0.37%
9,610,753
08/07/2026
18.59
18.82
18.18
18.72
-2.50%
13,371,533
08/06/2026
18.90
19.57
18.73
19.20
-0.47%
11,956,733
08/05/2026
19.66
19.95
19.20
19.29
-6.50%
15,082,111
08/04/2026
19.78
20.85
19.59
20.63
+10.38%
20,080,637
08/03/2026
17.69
18.76
17.49
18.69
-1.79%
12,063,279
07/31/2026
19.78
20.08
18.82
19.03
+0.48%
16,737,813
07/30/2026
17.53
19.02
17.53
18.94
+10.70%
24,762,883
07/29/2026
17.05
18.13
16.96
17.11
-1.44%
24,694,825
07/29/2026
$0.54 Earnings
07/28/2026
16.90
17.70
16.54
17.36
-9.01%
26,551,441
07/27/2026
20.03
20.15
18.57
19.08
-2.05%
15,479,947
07/24/2026
19.84
20.08
18.97
19.48
-6.66%
16,398,884
07/23/2026
20.72
21.11
20.44
20.87
-1.97%
9,189,498
07/22/2026
21.00
21.60
20.99
21.29
+0.47%
7,356,183
07/21/2026
21.51
21.51
20.89
21.19
+4.38%
17,368,065
07/20/2026
20.69
21.23
20.27
20.30
-4.47%
15,355,866
07/17/2026
20.55
21.74
20.16
21.25
-4.67%
20,772,468
07/16/2026
22.73
23.20
22.06
22.29
-10.55%
20,901,632
07/15/2026
25.60
25.80
24.21
24.92
+4.53%
15,708,301
07/14/2026
24.17
24.40
23.57
23.84
+1.62%
13,175,609
07/13/2026
23.56
23.73
23.01
23.46
-3.62%
21,656,681
07/10/2026
24.39
24.63
23.77
24.34
-2.09%
6,715,365
07/09/2026
25.02
25.49
24.65
24.86
+0.53%
12,178,747
07/08/2026
24.41
25.04
24.04
24.73
+5.55%
17,212,379
07/08/2026
$0.40 Dividend
07/07/2026
23.69
24.06
22.95
23.43
-7.74%
27,255,761
07/06/2026
25.27
26.33
25.16
25.40
+5.26%
13,180,631
07/02/2026
25.62
25.85
23.74
24.13
-4.55%
21,014,028
07/01/2026
25.95
26.21
25.25
25.28
-5.51%
19,750,319
06/30/2026
25.89
26.81
25.70
26.75
+1.38%
14,475,715
06/29/2026
25.27
26.41
24.40
26.39
+4.93%
11,871,299
06/26/2026
25.05
25.65
24.45
25.15
-7.75%
19,297,927
06/25/2026
27.76
28.47
26.88
27.26
-1.00%
20,957,135
06/24/2026
25.96
28.18
25.96
27.54
+6.91%
24,355,437
06/23/2026
25.48
26.25
25.44
25.76
-4.73%
25,943,373
06/22/2026
26.45
27.80
26.35
27.04
+14.20%
26,322,090
06/18/2026
23.23
23.76
22.71
23.67
+10.66%
26,913,268
06/17/2026
21.90
22.15
21.38
21.39
+0.65%
13,622,484
06/16/2026
22.08
22.30
21.23
21.26
-6.33%
16,464,141
06/15/2026
22.17
22.97
22.00
22.69
+6.70%
15,919,826
06/12/2026
20.45
21.41
20.26
21.27
+4.59%
16,400,361
06/11/2026
19.53
20.49
19.51
20.33
+9.42%
20,625,873
06/10/2026
18.71
19.38
18.48
18.58
-4.93%
20,239,040
06/09/2026
20.15
20.45
18.38
19.55
-0.60%
23,741,830
06/08/2026
19.95
20.23
19.32
19.66
+1.52%
16,800,528
06/05/2026
20.20
20.35
19.31
19.37
-5.24%
32,089,655