United Microelectronics (UMC) - Market capitalization

Market cap: HK$345.05 Billion

As of May 2026 United Microelectronics has a market cap of HK$345.05 Billion. This makes United Microelectronics the world's 564th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of United Microelectronics from 2009 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	HK$345.05 B	119.64%
2025	HK$157.10 B	21.24%
2024	HK$129.58 B	-21.57%
2023	HK$165.22 B	29.72%
2022	HK$127.36 B	-43.87%
2021	HK$226.92 B	40.71%
2020	HK$161.26 B	246.02%
2019	HK$46.60 B	35.45%
2018	HK$34.40 B	-24.29%
2017	HK$45.44 B	35.84%
2016	HK$33.45 B	-2.9%
2015	HK$34.45 B	-23.8%
2014	HK$45.21 B	13.13%
2013	HK$39.96 B	0.88%
2012	HK$39.61 B	-7.66%
2011	HK$42.90 B	-21.87%
2010	HK$54.91 B	3.21%
2009	HK$53.20 B

End of Day market cap according to different sources

On May 20th, 2026 the market cap of United Microelectronics was reported to be:

HK$346.20 Billion

by Nasdaq

HK$345.32 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
TSMC TSM	HK$16.311 T	4,627.30%	🇹🇼 Taiwan
Intel INTC	HK$4.682 T	1,256.90%	🇺🇸 USA
IBM IBM	HK$1.656 T	379.94%	🇺🇸 USA
Tower Semiconductor TSEM	HK$246.44 B	-28.58%	🇮🇱 Israel
ASE Group ASX	HK$544.45 B	57.79%	🇹🇼 Taiwan

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of United Microelectronics (UMC)

Market cap: HK$345.05 Billion