StockData
United Microelectronics Corp logo

United Microelectronics Corp (UMC) stock

UMCNYSESemiconductors & Related DevicesFiscal year ends December 31
Financials through fiscal 2025, year ended Dec 31, 2025Last filing: 20-F on Apr 30, 2026Score 9/30
$16.68−1.36 (-7.54%)

Close on Oct 30, 2026Market cap $41.99BP/E 33.2Yield –

Price history

United Microelectronics share prices for every week, newest first. Adjusted for stock splits, not for dividends.

Download all as CSV
Close, Oct 30, 2026
$16.68
-7.54% on the day
52-week range
$6.97 – $28.96
-42.4% from the high
Change over 52 weeks
+121.5%
From $7.53 on Oct 30, 2025
Average volume
13.21M
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$18.91$19.49$16.27$16.68-11.70%68,791,655
Oct 19, 2026$20.55$20.60$18.31$18.89-4.69%50,724,135
Oct 12, 2026$22.74$22.74$19.74$19.82-13.68%55,962,030
Oct 5, 2026$23.82$24.15$22.51$22.96-12.60%72,075,256
Sep 28, 2026$24.08$26.37$23.42$26.27+8.06%43,051,576
Sep 21, 2026$24.93$25.80$23.80$24.31-1.22%43,590,325
Sep 14, 2026$22.08$24.71$21.59$24.61+8.70%84,186,068
Sep 8, 2026$21.58$22.72$21.58$22.64+9.00%40,062,398
Aug 31, 2026$20.00$21.03$19.45$20.77+4.95%51,623,404
Aug 24, 2026$19.50$20.78$18.68$19.79+7.91%60,787,126
Aug 17, 2026$19.38$19.77$17.88$18.34-4.23%55,638,020
Aug 10, 2026$19.27$19.72$18.75$19.15+2.30%42,615,797
Aug 3, 2026$17.69$20.85$17.49$18.72-1.63%72,568,090
Jul 27, 2026$20.03$20.15$16.54$19.03-2.31%108,253,330
Jul 20, 2026$20.69$21.60$18.97$19.48-8.33%65,668,611
Jul 13, 2026$23.56$25.80$20.16$21.25-12.70%92,214,990
Jul 6, 2026$25.70$26.78$23.34$24.34-0.81%73,649,875
Jun 29, 2026$25.70$27.27$24.15$24.54-4.07%67,111,490
Jun 22, 2026$26.90$28.96$24.87$25.58+6.23%116,875,230
Jun 15, 2026$22.55$24.17$21.59$24.08+11.33%72,920,490
Jun 8, 2026$20.29$21.78$18.70$21.63+9.80%97,810,730
Jun 1, 2026$22.97$23.02$19.64$19.70-11.18%92,697,620
May 26, 2026$21.03$23.69$20.50$22.18+21.73%84,902,070
May 18, 2026$17.60$18.45$16.88$18.22+5.93%76,032,780
May 11, 2026$15.65$17.43$15.39$17.20+11.54%78,695,030
May 4, 2026$13.17$15.45$12.89$15.42+18.16%93,520,225
Apr 27, 2026$11.58$13.39$11.46$13.05+6.27%74,357,035
Apr 20, 2026$12.49$12.82$11.82$12.28+5.32%67,507,910
Apr 13, 2026$9.53$11.86$9.46$11.66+19.71%52,050,473
Apr 6, 2026$8.70$9.85$8.65$9.74+12.34%49,056,424
Mar 30, 2026$8.91$9.11$8.29$8.67-2.25%38,167,285
Mar 23, 2026$9.11$9.40$8.87$8.87-2.74%40,007,699
Mar 16, 2026$9.50$9.58$8.98$9.12-1.62%35,575,456
Mar 9, 2026$9.39$9.90$9.23$9.27-3.44%43,740,929
Mar 2, 2026$10.27$10.53$9.55$9.60-8.05%42,121,288
Feb 23, 2026$10.40$11.04$10.18$10.44+0.38%33,240,383
Feb 17, 2026$10.27$10.47$10.07$10.40-0.19%25,525,535
Feb 9, 2026$10.00$10.49$9.90$10.42+3.58%41,931,391
Feb 2, 2026$9.77$10.20$9.65$10.06-1.18%63,872,330
Jan 26, 2026$11.20$12.68$10.07$10.18-3.42%104,326,390
Jan 20, 2026$10.60$11.20$10.26$10.54+13.33%65,179,430
Jan 12, 2026$8.76$9.37$8.52$9.30+5.80%49,884,833
Jan 5, 2026$7.79$9.11$7.70$8.79+12.12%70,692,050
Dec 29, 2025$7.92$8.00$7.76$7.84-2.24%22,083,840
Dec 22, 2025$8.12$8.15$7.92$8.02-0.99%19,430,535
Dec 15, 2025$7.92$8.17$7.83$8.10+2.92%48,160,360
Dec 8, 2025$8.02$8.10$7.78$7.87-1.87%50,339,112
Dec 1, 2025$7.49$8.06$7.48$8.02+7.51%45,510,289
Nov 24, 2025$7.33$7.47$7.15$7.46+3.04%29,328,502
Nov 17, 2025$7.08$7.31$6.97$7.24+1.40%45,235,080
Nov 10, 2025$7.43$7.45$7.07$7.14-3.64%36,116,203
Nov 3, 2025$7.82$7.90$7.15$7.41-3.89%47,275,325

Seasonality

UMC return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average2.7%2.8%-0.8%6.1%9.9%5.4%2.2%0.9%4.4%-5.6%9.2%1.9%
Months up6 of 105 of 105 of 106 of 108 of 109 of 106 of 104 of 104 of 106 of 105 of 95 of 9
202629.5%2.6%-14.0%45.4%69.8%22.7%-28.8%4.5%23.2%-31.9%
2025-10.9%11.6%10.9%-1.5%8.1%6.9%-10.6%-3.8%15.2%1.7%-3.2%5.4%
2024-8.9%-0.4%5.3%-4.8%10.4%3.1%0.9%4.8%-4.0%-18.8%-1.3%-3.9%
202324.5%0.0%7.7%-8.3%2.9%2.6%-4.8%-4.5%-1.5%0.8%9.4%8.6%
2022-16.0%-5.6%-1.7%-12.7%10.7%-17.8%0.7%-2.8%-16.0%6.5%27.1%-13.4%
20217.4%8.3%-7.0%8.9%-5.1%0.4%14.9%8.0%0.5%-10.1%13.2%0.6%
2020-9.7%2.5%-12.5%15.2%1.2%4.3%47.3%-4.3%35.3%10.6%34.5%18.2%
20195.6%-2.1%1.6%15.4%-9.2%12.2%2.8%-3.2%-1.0%8.1%8.0%9.8%
20182.1%-1.2%7.5%3.1%4.1%1.4%3.6%-0.4%-7.5%-27.1%-3.2%-1.6%
20173.4%12.7%-5.4%0.5%6.2%18.4%-4.0%10.6%0.0%4.0%-1.9%-6.3%