United Microelectronics - 15 Year Stock Price History | UMC

Historical daily share price chart and data for United Microelectronics since 2011 adjusted for splits and dividends. The latest closing stock price for United Microelectronics as of June 09, 2026 is 19.88.
  • The all-time high United Microelectronics stock closing price was 22.89 on June 01, 2026.
  • The United Microelectronics 52-week high stock price is 23.69, which is 19.2% above the current share price.
  • The United Microelectronics 52-week low stock price is 6.56, which is 67% below the current share price.
  • The average United Microelectronics stock price for the last 52 weeks is 9.43.
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United Microelectronics Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 12.0536 7.8400 22.8900 7.7700 19.8800 152.93%
2025 6.9360 6.1416 8.1300 5.3515 7.8600 28.77%
2024 7.2592 7.3764 8.3612 5.9629 6.1040 -19.01%
2023 6.7069 5.4807 7.7149 5.4641 7.5367 39.20%
2022 6.2550 9.0253 9.0641 4.4443 5.4144 -40.32%
2021 7.7364 6.0214 9.7231 6.0214 9.0718 43.15%
2020 2.8328 1.9379 6.7957 1.5231 6.3371 230.68%
2019 1.4799 1.2140 2.0023 1.1591 1.9164 56.10%
2018 1.6525 1.6037 2.0302 1.1248 1.2277 -21.85%
2017 1.4411 1.1288 1.7812 1.1161 1.5709 41.55%
2016 1.1810 1.0873 1.2999 1.0084 1.1098 -2.82%
2015 1.2325 1.2891 1.4749 0.9780 1.1420 -13.37%
2014 1.2341 1.1230 1.4982 1.1061 1.3182 15.09%
2013 1.1162 1.1124 1.3251 0.9652 1.1454 5.55%
2012 1.1895 1.1480 1.4258 0.9543 1.0852 -3.26%
Sector Industry Market Cap Revenue
Computer and Technology Semiconductors $24.468B $7.565B
UMC specializes in providing foundry services for high performancesemiconductor applications. Its core competency lies in its abilityto produce high yield Integrated Circuit wafers, manufactured on a per-customer basis. The company draws its distinction from industryleading technology. In addition to wafer manufacturing, its customers benefit from services such as extensive IP resources, free-of-charge design libraries, and full front-end and backend support.
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