United Microelectronics (STU:UMCB) Beneish M-Score: -2.80 (As of Jun. 26, 2026)


STU:UMCB United Microelectronics Corp STU:UMCB
79 GF Score
Price €22.40
GF Value €6.94
Valuation Significantly Overvalued
! 9 Warning Signs
View Full Analysis

What is United Microelectronics Beneish M-Score?

United Microelectronics STU:UMCB 79 Beneish M-Score is -2.80 as of Jun. 26, 2026. GuruFocus rates STU:UMCB with a GF Score™ of 79/100 and a GF Value™ of €6.94 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 987 Semiconductors companies, United Microelectronics ranks better than 73.66% on this metric.

The zones of discrimination for M-Score is as such:

An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator.
An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.

Good Sign:

Beneish M-Score -2.8 no higher than -1.78, which implies that the company is unlikely to be a manipulator.

The historical rank and industry rank for United Microelectronics's Beneish M-Score or its related term are showing as below:

STU:UMCB' s Beneish M-Score Range Over the Past 10 Years
Min: -3.28   Med: -2.95   Max: -2.24
Current: -2.8

During the past 13 years, the highest Beneish M-Score of United Microelectronics was -2.24. The lowest was -3.28. And the median was -2.95.


United Microelectronics Beneish M-Score Historical Data

* Premium members only.

The historical data trend for United Microelectronics's Beneish M-Score can be seen below:

* 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 Beneish M-Score Chart

United Microelectronics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beneish M-Score
Get a 7-Day Free Trial Premium Member Only Premium Member Only -2.99 -3.00 -2.67 -2.74 -2.95

United Microelectronics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Beneish M-Score Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -2.82 -2.91 -2.95 -2.95 -2.80

STU:UMCB vs NVDA, AVGO, MU: Beneish M-Score Comparison

For the Semiconductors subindustry, United Microelectronics's Beneish M-Score, along with its competitors' market caps and Beneish M-Score 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 Beneish M-Score vs Semiconductors Industry

For the Semiconductors industry and Technology sector, United Microelectronics's Beneish M-Score distribution charts can be found below:

* The bar in red indicates where United Microelectronics's Beneish M-Score falls into.


STU:UMCB
79GF Score
United Microelectronics Corp STU:UMCB
Beneish M-Score is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

United Microelectronics Beneish M-Score Calculation

The M-score was created by Professor Messod Beneish. Instead of measuring the bankruptcy risk (Altman Z-Score) or business trend (Piotroski F-Score), M-score can be used to detect the risk of earnings manipulation. This is the original research paper on M-score.

The M-Score Variables:

The M-score of United Microelectronics for today is based on a combination of the following eight different indices:

M=-4.84+0.92 * DSRI+0.528 * GMI+0.404 * AQI+0.892 * SGI+0.115 * DEPI
=-4.84+0.92 * 1.0219+0.528 * 1.0648+0.404 * 1.1672+0.892 * 0.9986+0.115 * 0.8187
-0.172 * SGAI+4.679 * TATA-0.327 * LVGI
-0.172 * 0.9769+4.679 * -0.098543-0.327 * 1.0243
=-2.85

* 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.

This Year (Mar26) TTM:Last Year (Mar25) TTM:
Total Receivables was €1,061 Mil.
Revenue was 1656.661 + 1683.62 + 1658.777 + 1719.707 = €6,719 Mil.
Gross Profit was 483.621 + 516.406 + 494.413 + 493.985 = €1,988 Mil.
Total Current Assets was €5,875 Mil.
Total Assets was €16,283 Mil.
Property, Plant and Equipment(Net PPE) was €7,518 Mil.
Depreciation, Depletion and Amortization(DDA) was €1,705 Mil.
Selling, General, & Admin. Expense(SGA) was €267 Mil.
Total Current Liabilities was €2,161 Mil.
Long-Term Debt & Capital Lease Obligation was €1,425 Mil.
Net Income was 438.918 + 236.95 + 420.314 + 260.557 = €1,357 Mil.
Non Operating Income was 145.122 + 12.263 + 100.152 + -25.933 = €232 Mil.
Cash Flow from Operations was 596.607 + 898.96 + 587.392 + 646.761 = €2,730 Mil.
Total Receivables was €1,040 Mil.
Revenue was 1622.837 + 1770.375 + 1705.378 + 1629.764 = €6,728 Mil.
Gross Profit was 433.25 + 537.76 + 575.992 + 573.386 = €2,120 Mil.
Total Current Assets was €5,394 Mil.
Total Assets was €16,071 Mil.
Property, Plant and Equipment(Net PPE) was €8,232 Mil.
Depreciation, Depletion and Amortization(DDA) was €1,468 Mil.
Selling, General, & Admin. Expense(SGA) was €274 Mil.
Total Current Liabilities was €2,044 Mil.
Long-Term Debt & Capital Lease Obligation was €1,412 Mil.




1. DSRI = Days Sales in Receivables Index

Measured as the ratio of Revenue in Total Receivables in year t to year t-1.

A large increase in DSR could be indicative of revenue inflation.

DSRI=(Receivables_t / Revenue_t) / (Receivables_t-1 / Revenue_t-1)
=(1061.11 / 6718.765) / (1039.82 / 6728.354)
=0.157932 / 0.154543
=1.0219

2. GMI = Gross Margin Index

Measured as the ratio of gross margin in year t-1 to gross margin in year t.

Gross margin has deteriorated when this index is above 1. A firm with poorer prospects is more likely to manipulate earnings.

GMI=GrossMargin_t-1 / GrossMargin_t
=(GrossProfit_t-1 / Revenue_t-1) / (GrossProfit_t / Revenue_t)
=(2120.388 / 6728.354) / (1988.425 / 6718.765)
=0.315142 / 0.295951
=1.0648

3. AQI = Asset Quality Index

AQI is the ratio of asset quality in year t to year t-1.

Asset quality is measured as the ratio of non-current assets other than Property, Plant and Equipment to Total Assets.

AQI=(1 - (CurrentAssets_t + PPE_t) / TotalAssets_t) / (1 - (CurrentAssets_t-1 + PPE_t-1) / TotalAssets_t-1)
=(1 - (5874.516 + 7518.098) / 16283.059) / (1 - (5394.307 + 8232.146) / 16070.533)
=0.177512 / 0.152085
=1.1672

4. SGI = Sales Growth Index

Ratio of Revenue in year t to sales in year t-1.

Sales growth is not itself a measure of manipulation. However, growth companies are likely to find themselves under pressure to manipulate in order to keep up appearances.

SGI=Sales_t / Sales_t-1
=Revenue_t / Revenue_t-1
=6718.765 / 6728.354
=0.9986

5. DEPI = Depreciation Index

Measured as the ratio of the rate of Depreciation, Depletion and Amortization in year t-1 to the corresponding rate in year t.

DEPI greater than 1 indicates that assets are being depreciated at a slower rate. This suggests that the firm might be revising useful asset life assumptions upwards, or adopting a new method that is income friendly.

DEPI=(Depreciation_t-1 / (Depreciaton_t-1 + PPE_t-1)) / (Depreciation_t / (Depreciaton_t + PPE_t))
=(1468.089 / (1468.089 + 8232.146)) / (1704.882 / (1704.882 + 7518.098))
=0.151346 / 0.184852
=0.8187

Note: If the Depreciation, Depletion and Amortization data is not available, we assume that the depreciation rate is constant and set the Depreciation Index to 1.

6. SGAI = Sales, General and Administrative expenses Index

The ratio of Selling, General, & Admin. Expense(SGA) to Sales in year t relative to year t-1.

SGA expenses index > 1 means that the company is becoming less efficient in generate sales.

SGAI=(SGA_t / Sales_t) / (SGA_t-1 /Sales_t-1)
=(267.418 / 6718.765) / (274.148 / 6728.354)
=0.039802 / 0.040745
=0.9769

7. LVGI = Leverage Index

The ratio of total debt to Total Assets in year t relative to yeat t-1.

An LVGI > 1 indicates an increase in leverage

LVGI=((LTD_t + CurrentLiabilities_t) / TotalAssets_t) / ((LTD_t-1 + CurrentLiabilities_t-1) / TotalAssets_t-1)
=((1425.455 + 2160.773) / 16283.059) / ((1411.582 + 2043.963) / 16070.533)
=0.220243 / 0.215024
=1.0243

8. TATA = Total Accruals to Total Assets

Total accruals calculated as the change in working capital accounts other than cash less depreciation.

TATA=(IncomefromContinuingOperations_t - CashFlowsfromOperations_t) / TotalAssets_t
=(NetIncome_t - NonOperatingIncome_t - CashFlowsfromOperations_t) / TotalAssets_t
=(1356.739 - 231.604 - 2729.72) / 16283.059
=-0.098543

An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator. An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.

United Microelectronics has a M-score of -2.85 suggests that the company is unlikely to be a manipulator.

Frequently Asked Questions Learn more about Beneish M-Score →
What does a Beneish M-Score of -2.80 mean?
United Microelectronics (STU:UMCB) has a Beneish M-Score of -2.80 as of Jun. 26, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on United Microelectronics and its competitors. According to the industry distribution chart, United Microelectronics ranks #260 out of 987 companies in the Semiconductors industry, placing it in the top 26.3%.
Is United Microelectronics' Beneish M-Score too high?
United Microelectronics' current Beneish M-Score is -2.80. Based on the distribution chart, United Microelectronics ranks #260 out of 987 companies in the Semiconductors industry, which is above the industry midpoint. Overall, United Microelectronics has a GF Score™ of 79/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does United Microelectronics' Beneish M-Score compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, United Microelectronics ranks #260 out of 987 companies for Beneish M-Score. This puts United Microelectronics in the upper half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Beneish M-Score for a Semiconductors company?
A good Beneish M-Score depends on the Semiconductors industry context. However, Beneish M-Score 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 Beneish M-Score mean?
A high Beneish M-Score can signal that a stock is expensive relative to its fundamentals. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on United Microelectronics and its competitors. United Microelectronics's current Beneish M-Score is -2.80. 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 €6.94, compared to a current price of €22.40 — trading 222.8% above its estimated fair value. The current Beneish M-Score is -2.80. United Microelectronics' overall GF Score™ is 79/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Beneish M-Score calculated?
Beneish M-Score is calculated from a company's financial statements. For United Microelectronics (STU:UMCB), the current Beneish M-Score is -2.80 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 (STU:UMCB) Overvalued in 2026?

Based on GuruFocus' analysis, United Microelectronics stock appears to be overvalued. The current stock price of €22.40 is trading 222.8% above its estimated GF Value™ of €6.94. GuruFocus considers United Microelectronics to be Significantly Overvalued.

Key valuation signals for STU:UMCB:

  • Beneish M-Score: -2.80
  • GF Value™: €6.94 vs. price of €22.40 (222.8% above fair value)
  • GF Score™: 79/100 with 9 warning signs

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.


United Microelectronics Business Description

Address No. 3, Li-Hsin 2nd Road, Hsinchu Science Park, Hsinchu, TWN
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.
79GF Score

Get the complete analysis for STU:UMCB

Beneish M-Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€22.40
Price
€6.94
GF Value