United Microelectronics (UMC) Stock Chart & Stock Price History $6.78 +0.31 (+4.71%) Closing price 03/14/2025 03:59 PM EasternExtended Trading$6.78 +0.01 (+0.15%) As of 03/14/2025 07:51 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrends United Microelectronics Stock Price Performance 5 Day Performance+0.44%1 Month Performance+8.14%3 Month Performance+6.03%6 Month Performance-20.95%Year-To-Date Performance+4.39%1 Year Performance-17.73% Receive UMC Stock News and Ratings via EmailSign-up to receive the latest news and ratings for United Microelectronics and its competitors with MarketBeat's FREE daily newsletter. Email Address Remove Ads UMC Stock Chart for Saturday, March, 15, 2025 UMC Chart by TradingViewRemove Ads United Microelectronics Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization03/14/2025$6.48$6.78+4.63%$6.84$6.7015.67 million shs$16.98 billion03/13/2025$6.63$6.48-2.26%$6.60$6.4216.24 million shs$16.23 billion03/12/2025$6.69$6.63-0.90%$6.76$6.6013.82 million shs$16.60 billion03/11/2025$6.79$6.69-1.47%$6.79$6.6124.14 million shs$16.75 billion03/10/2025$6.75$6.79+0.59%$6.84$6.7118.93 million shs$17.00 billion03/07/2025$6.66$6.75+1.35%$6.76$6.6520.24 million shs$16.90 billion03/06/2025$6.80$6.66-2.06%$6.76$6.6117.33 million shs$16.68 billion03/05/2025$6.66$6.80+2.10%$6.82$6.6417.20 million shs$17.03 billion03/04/2025$6.42$6.66+3.66%$6.75$6.4816.36 million shs$16.68 billion03/03/2025$6.47$6.42-0.70%$6.63$6.3722.58 million shs$16.09 billion Get the Latest News and Ratings for UMC and Related StocksEnter your email address below to receive the latest news and analysts' ratings for United Microelectronics and its competitors with MarketBeat's FREE daily newsletter. 02/28/2025$6.41$6.47+0.94%$6.53$6.3620.39 million shs$16.20 billion02/27/2025$6.61$6.41-3.03%$6.58$6.3815.57 million shs$16.05 billion02/26/2025$6.50$6.61+1.69%$6.63$6.567.80 million shs$16.55 billion02/25/2025$6.51$6.50-0.15%$6.59$6.4818.93 million shs$16.28 billion02/24/2025$6.48$6.51+0.46%$6.57$6.4712.19 million shs$16.30 billion02/21/2025$6.54$6.48-0.92%$6.60$6.4315.62 million shs$16.23 billion02/20/2025$6.49$6.54+0.77%$6.58$6.5114.99 million shs$16.38 billion02/19/2025$6.39$6.49+1.57%$6.52$6.4118.66 million shs$16.25 billion02/18/2025$6.27$6.39+1.92%$6.44$6.3313.65 million shs$16.00 billion02/17/2025$6.27$6.27$6.28$6.225.11 million shs$15.70 billion02/14/2025$6.29$6.27-0.43%$6.28$6.225.11 million shs$15.70 billion02/13/2025$6.02$6.29+4.52%$6.31$6.2210.59 million shs$15.77 billion Related Companies NXP Semiconductors Stock Chart L3Harris Technologies Stock Chart Vertiv Stock Chart Nokia Oyj Stock Chart Telefonaktiebolaget LM Ericsson (publ) Stock Chart STMicroelectronics Stock Chart GlobalFoundries Stock Chart ASE Technology Stock Chart Hubbell Stock Chart Ubiquiti Stock Chart Receive UMC Stock News and Ratings via EmailSign-up to receive the latest news and ratings for United Microelectronics and its competitors with MarketBeat's FREE daily newsletter. 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