United Microelectronics's quarterly market cap
increased
from Sep. 2025 (€15,821 Mil) to Dec. 2025 (€16,616 Mil) and
increased
from Dec. 2025 (€16,616 Mil) to Mar. 2026 (€19,371 Mil).
United Microelectronics's annual market cap
declined
from Dec. 2023 (€19,171 Mil) to Dec. 2024 (€15,827 Mil) but then
increased
from Dec. 2024 (€15,827 Mil) to Dec. 2025 (€16,616 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. United Microelectronics's Enterprise Value for Today is €51,578 Mil.
United Microelectronics (STU:UMCB) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
United Microelectronics Market Cap Related Terms
United Microelectronics Market Cap Historical Data
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Semiconductors subindustry, United Microelectronics's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
United Microelectronics Market Cap vs Semiconductors Industry
For the Semiconductors industry and Technology sector, United Microelectronics's Market Cap distribution charts can be found below:
* The bar in red indicates where United Microelectronics's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
United Microelectronics's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
United Microelectronics (STU:UMCB) has a Market Cap of €53,699 Mil as of Jul. 04, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on United Microelectronics and its competitors. According to the industry distribution chart, United Microelectronics ranks #30 out of 1034 companies in the Semiconductors industry, placing it in the top 2.9%.
Is United Microelectronics' Market Cap too high?
United Microelectronics' current Market Cap is €53,699 Mil. Based on the distribution chart, United Microelectronics ranks #30 out of 1034 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, United Microelectronics has a GF Score™ of 80/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does United Microelectronics' Market Cap compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, United Microelectronics ranks #30 out of 1034 companies for Market Cap. This places United Microelectronics in the top 3% of its industry — outperforming the majority of peers. The industry median Market Cap is 546.40. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for a Semiconductors company?
The median Market Cap among Semiconductors companies is 546.40, based on 1,034 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on United Microelectronics and its competitors. For the Semiconductors industry, the median Market Cap is 546.40 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. United Microelectronics's current Market Cap is €53,699 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is United Microelectronics stock overvalued right now?
Based on GuruFocus' analysis, United Microelectronics (STU:UMCB) is currently considered Significantly Overvalued. The stock's GF Value™ is €6.39, compared to a current price of €21.40 — trading 234.9% above its estimated fair value. The current Market Cap is €53,699 Mil. United Microelectronics' overall GF Score™ is 80/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For United Microelectronics (STU:UMCB), the current Market Cap is €53,699 Mil as of Jul. 04, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is United Microelectronics (STU:UMCB) Overvalued in 2026?
Based on GuruFocus' analysis, United Microelectronics stock appears to be overvalued.
The current stock price of €21.40 is trading 234.9% above its estimated GF Value™ of €6.39.
GuruFocus considers United Microelectronics to be Significantly Overvalued.
Key valuation signals for STU:UMCB:
Market Cap: €53,699 Mil
GF Value™: €6.39 vs. price of €21.40 (234.9% above fair value)
No single metric tells the full story. See the STU:UMCB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Founded in 1980, United Microelectronics is the world's third-largest dedicated chip foundry, with close to 5% market share in 2025 after TSMC and SMIC. UMC's headquarters are in Hsinchu, Taiwan, and it operates 12 fabs in Taiwan, Mainland China, Japan and Singapore, with additional sales offices in Europe, the US, and South Korea. UMC features a diverse customer base that includes Texas Instruments, MediaTek, Intel, Broadcom, Novatek, and Realtek, supplying a wide range of products applied in communications, display, memory, automotive and more. UMC employs about 19,000 people as of February 2025.
80GF Score
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Market Cap is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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