UMC
UNITED MICRO SP ADR (UMC)
NYSE
$18.30-$0.04 (-0.23%)
Price as of Aug 21, 2026 7:59 PM EDT
  • $46.0B
    Market Cap
  • 175.54%
    1-Year Change
  • Semiconductors
    Industry
  • 1 Month
    -13.45%
    Low Price$17.11
    High Price$20.63
  • 3 Months
    +1.66%
    Low Price$17.11
    High Price$27.54
  • 1 Year
    +175.54%
    Low Price$6.47
    High Price$27.54
Date
Open
High
Low
Close
Change (%)
Volume
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
06/04/2026
19.88
20.62
19.58
20.44
-2.94%
17,539,721
06/03/2026
20.75
21.14
20.23
21.06
-4.63%
16,528,894
06/02/2026
21.96
22.13
21.50
22.08
-1.88%
15,033,144
06/01/2026
22.58
22.63
21.76
22.50
+3.20%
11,502,826
05/29/2026
22.26
22.45
21.62
21.81
-2.20%
14,650,528
05/28/2026
22.00
22.81
21.39
22.30
+2.07%
16,065,899
05/27/2026
23.26
23.29
21.32
21.85
+5.41%
27,433,620
05/26/2026
20.68
21.15
20.16
20.73
+15.70%
26,752,023
05/22/2026
17.78
17.99
17.68
17.91
-0.71%
10,045,470
05/21/2026
17.82
18.14
17.71
18.04
+4.50%
12,084,997
05/20/2026
17.02
17.31
16.83
17.26
-0.11%
13,552,694
05/19/2026
17.13
17.80
17.01
17.28
+2.69%
19,734,299
05/18/2026
17.30
17.45
16.59
16.83
-0.47%
20,560,249
05/15/2026
16.62
17.14
16.55
16.91
+0.41%
15,989,809
05/14/2026
16.58
17.03
15.73
16.84
+7.60%
17,559,755
05/13/2026
15.32
15.86
15.31
15.65
-0.87%
11,526,657
05/12/2026
15.90
16.03
15.23
15.79
+3.01%
19,760,232
05/11/2026
15.39
15.63
15.13
15.33
+1.10%
13,858,561
05/08/2026
14.28
15.19
14.19
15.16
+1.72%
14,785,162
05/07/2026
14.98
15.19
14.77
14.90
-0.46%
16,029,124
05/06/2026
15.03
15.19
14.45
14.97
+8.71%
30,100,122
05/05/2026
13.27
13.98
13.19
13.77
+7.94%
23,357,494
05/04/2026
12.95
13.15
12.67
12.76
-0.54%
9,248,235
05/01/2026
12.81
12.97
12.74
12.83
-0.08%
8,407,605
04/30/2026
12.24
12.91
12.24
12.84
+2.43%
15,475,555
04/29/2026
12.22
13.16
11.90
12.54
+9.35%
25,368,597
04/29/2026
$0.20 Earnings
04/28/2026
11.49
11.69
11.38
11.46
-0.26%
12,220,848
04/27/2026
11.39
11.59
11.26
11.49
-4.80%
12,884,420
04/24/2026
11.98
12.11
11.92
12.07
+2.33%
10,979,204
04/23/2026
11.77
11.90
11.62
11.80
-5.59%
10,655,422
04/22/2026
12.42
12.60
12.37
12.50
+3.08%
10,053,688
04/21/2026
11.98
12.23
11.85
12.12
-2.45%
13,170,646
04/20/2026
12.28
12.53
12.00
12.43
+8.40%
22,643,961
04/17/2026
11.65
11.66
11.22
11.46
+9.79%
20,922,392
04/16/2026
10.29
10.56
10.23
10.44
+6.73%
11,609,123
04/15/2026
9.74
9.79
9.64
9.78
+3.75%
7,029,255
04/14/2026
9.53
9.54
9.36
9.43
-1.13%
5,458,835
04/13/2026
9.37
9.55
9.30
9.54
-0.41%
7,030,873
04/10/2026
9.64
9.68
9.54
9.58
+2.20%
6,704,636
04/09/2026
9.21
9.38
9.21
9.37
+0.63%
7,804,446
04/08/2026
9.30
9.45
9.22
9.31
+1.72%
12,162,419
04/07/2026
8.94
9.15
8.82
9.15
+7.13%
16,941,432
04/06/2026
8.55
8.60
8.50
8.54
+0.23%
5,440,243