United MicroelectronicsUMC -1.00%81 PB Ratio is 5.47 as of Jun. 26, 2026, which is 255% above its 10-year median of 1.54. GuruFocus rates UMC with a GF Score™ of 81/100 and a GF Value™ of $7.89 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 1,000 Semiconductors companies, United Microelectronics ranks worse than 64% on this metric.
United Microelectronics Corp stock PB Ratio (=5.52) is close to 10-year high of 5.52.
The historical rank and industry rank for United Microelectronics's PB Ratio or its related term are showing as below:
UMC'
s PB Ratio Range Over the Past 10 Years
Min: 0.61 Med: 1.54 Max: 5.52
Current: 5.52
During the past 13 years, United Microelectronics's highest PB Ratio was 5.52. The lowest was 0.61. And the median was 1.54.
UMC's PB Ratio is ranked worse than 64% of 1000
companies
in the Semiconductors industry
Industry Median: 3.765
vs UMC: 5.52
During the past 12 months, United Microelectronics's average Book Value Per Share Growth Rate was 4.00% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 4.10% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 10.10% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 6.40% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of United Microelectronics was 14.80% per year. The lowest was -9.90% per year. And the median was 3.15% per year.
Back to Basics: PB Ratio
United Microelectronics (NYSE:UMC) PB Ratio Explanation
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
* 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 PB Ratio, along with its competitors' market caps and PB Ratio 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 PB Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, United Microelectronics's PB Ratio distribution charts can be found below:
* The bar in red indicates where United Microelectronics's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
United Microelectronics (UMC) has a PB Ratio of 5.47 as of Jun. 26, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on United Microelectronics and its competitors. This is 255% above median its historical median of 1.54. Over the past decade, United Microelectronics' PB Ratio has ranged from 0.61 to 5.52. According to the industry distribution chart, United Microelectronics ranks #640 out of 1000 companies in the Semiconductors industry, placing it in the top 64%.
Is United Microelectronics' PB Ratio too high?
United Microelectronics' current PB Ratio of 5.47 is 255% above median its 10-year median of 1.54. Over the past 10 years, this metric has ranged from a low of 0.61 to a high of 5.52. The Semiconductors industry median PB Ratio is 3.77. United Microelectronics' value of 5.47 is 45.3% above this industry median. Based on the distribution chart, United Microelectronics ranks #640 out of 1000 companies in the Semiconductors industry, which is below the industry midpoint. Overall, United Microelectronics has a GF Score™ of 81/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does United Microelectronics' PB Ratio compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, United Microelectronics ranks #640 out of 1000 companies for PB Ratio. This places United Microelectronics in the lower half of its industry. The industry median PB Ratio is 3.77. United Microelectronics' value of 5.47 is 45.3% above this benchmark. Historically, United Microelectronics' own PB Ratio has ranged from 0.61 to 5.52 over the past decade. While the company's 10-year median is 1.54 vs. the industry median of 3.77, United Microelectronics has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for a Semiconductors company?
The median PB Ratio among Semiconductors companies is 3.77, based on 1,000 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. United Microelectronics's current PB Ratio of 5.47 is 45.3% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on United Microelectronics and its competitors. For the Semiconductors industry, the median PB Ratio is 3.77 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. United Microelectronics's current PB Ratio is 5.47, which is 255% above median its own 10-year median of 1.54. 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 (UMC) is currently considered Significantly Overvalued. The stock's GF Value™ is $7.89, compared to a current price of $27.73 — trading 251.5% above its estimated fair value. The current PB Ratio is 5.47, which is 255% above median its 10-year median of 1.54 and 45.3% above the Semiconductors industry median of 3.77. United Microelectronics' overall GF Score™ is 81/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For United Microelectronics (UMC), the current PB Ratio is 5.47 as of Jun. 26, 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 (UMC) Overvalued in 2026?
Based on GuruFocus' analysis, United Microelectronics stock appears to be overvalued.
The current stock price of $27.73 is trading 251.5% above its estimated GF Value™ of $7.89.
GuruFocus considers United Microelectronics to be Significantly Overvalued.
Key valuation signals for UMC:
PB Ratio: 5.47 (255% above median its 10-year median of 1.54)
GF Value™: $7.89 vs. price of $27.73 (251.5% above fair value)
Industry Position: 45.3% above the Semiconductors median (#640 of 1000)
No single metric tells the full story. See the UMC 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.
81GF Score
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