Century Aluminum Co (STU:EY3) Beneish M-Score: -1.86 (As of Jul. 25, 2026)

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STU:EY3 Century Aluminum Co STU:EY3
66 GF Score
Price €40.50
GF Value €19.23
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Century Aluminum Co Beneish M-Score?

Century Aluminum Co STU:EY3 +0.12% 66 Beneish M-Score is -1.86 as of Jul. 25, 2026. GuruFocus rates STU:EY3 with a GF Score™ of 66/100 and a GF Value™ of €19.23 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 679 Metals & Mining companies, Century Aluminum Co ranks worse than 68.04% 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 -1.86 no higher than -1.78, which implies that the company is unlikely to be a manipulator.

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

STU:EY3' s Beneish M-Score Range Over the Past 10 Years
Min: -6.06   Med: -2.28   Max: 76.41
Current: -1.86

During the past 13 years, the highest Beneish M-Score of Century Aluminum Co was 76.41. The lowest was -6.06. And the median was -2.28.


Century Aluminum Co Beneish M-Score Historical Data

* Premium members only.

The historical data trend for Century Aluminum Co'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.

Century Aluminum Co Beneish M-Score Chart

Century Aluminum Co 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 -2.65 -1.59 -1.39 -1.88 -2.35

Century Aluminum Co 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 -2.19 -2.30 -2.01 -2.35 -1.86

STU:EY3 vs CSTM, KALU, AA: Beneish M-Score Comparison

For the Aluminum subindustry, Century Aluminum Co'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.


Century Aluminum Co Beneish M-Score vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Century Aluminum Co's Beneish M-Score distribution charts can be found below:

* The bar in red indicates where Century Aluminum Co's Beneish M-Score falls into.


STU:EY3
66GF Score
Century Aluminum Co STU:EY3
Beneish M-Score is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Century Aluminum Co 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 Century Aluminum Co 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 * 1.7892+0.528 * 0.724+0.404 * 0.8964+0.892 * 0.9956+0.115 * 1.2336
-0.172 * SGAI+4.679 * TATA-0.327 * LVGI
-0.172 * 1.5705+4.679 * 0.009951-0.327 * 0.8364
=-1.92

* 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 €328 Mil.
Revenue was 561.558 + 541.18 + 538.634 + 544.563 = €2,186 Mil.
Gross Profit was 102.762 + 70.284 + 65.86 + 31.385 = €270 Mil.
Total Current Assets was €1,085 Mil.
Total Assets was €2,296 Mil.
Property, Plant and Equipment(Net PPE) was €1,042 Mil.
Depreciation, Depletion and Amortization(DDA) was €78 Mil.
Selling, General, & Admin. Expense(SGA) was €80 Mil.
Total Current Liabilities was €471 Mil.
Long-Term Debt & Capital Lease Obligation was €415 Mil.
Net Income was 291.937 + 1.537 + 12.695 + -3.988 = €302 Mil.
Non Operating Income was 216.336 + -41.163 + -32.887 + -18.467 = €124 Mil.
Cash Flow from Operations was 59.166 + 87.791 + 1.704 + 6.849 = €156 Mil.
Total Receivables was €184 Mil.
Revenue was 586.357 + 602.51 + 485.729 + 520.983 = €2,196 Mil.
Gross Profit was 53.002 + 50.902 + 73.702 + 18.952 = €197 Mil.
Total Current Assets was €760 Mil.
Total Assets was €1,808 Mil.
Property, Plant and Equipment(Net PPE) was €899 Mil.
Depreciation, Depletion and Amortization(DDA) was €84 Mil.
Selling, General, & Admin. Expense(SGA) was €51 Mil.
Total Current Liabilities was €414 Mil.
Long-Term Debt & Capital Lease Obligation was €420 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)
=(327.575 / 2185.935) / (183.89 / 2195.579)
=0.149856 / 0.083755
=1.7892

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)
=(196.558 / 2195.579) / (270.291 / 2185.935)
=0.089524 / 0.12365
=0.724

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 - (1085.142 + 1042.411) / 2296.488) / (1 - (760.257 + 899.285) / 1807.912)
=0.073562 / 0.082067
=0.8964

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
=2185.935 / 2195.579
=0.9956

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))
=(84.18 / (84.18 + 899.285)) / (77.722 / (77.722 + 1042.411))
=0.085595 / 0.069386
=1.2336

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)
=(80.023 / 2185.935) / (51.179 / 2195.579)
=0.036608 / 0.02331
=1.5705

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)
=((415.027 + 471.165) / 2296.488) / ((420.227 + 413.845) / 1807.912)
=0.38589 / 0.461345
=0.8364

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
=(302.181 - 123.819 - 155.51) / 2296.488
=0.009951

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.

Century Aluminum Co has a M-score of -1.92 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 -1.86 mean?
Century Aluminum Co (STU:EY3) has a Beneish M-Score of -1.86 as of Jul. 25, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Century Aluminum Co and its competitors. According to the industry distribution chart, Century Aluminum Co ranks #462 out of 679 companies in the Metals & Mining industry, placing it in the top 68%.
Is Century Aluminum Co's Beneish M-Score too high?
Century Aluminum Co's current Beneish M-Score is -1.86. Based on the distribution chart, Century Aluminum Co ranks #462 out of 679 companies in the Metals & Mining industry, which is below the industry midpoint. Overall, Century Aluminum Co has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Century Aluminum Co's Beneish M-Score compare to CSTM and KALU?
According to the Metals & Mining industry distribution chart, Century Aluminum Co ranks #462 out of 679 companies for Beneish M-Score. This places Century Aluminum Co in the lower 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 Metals & Mining company?
A good Beneish M-Score depends on the Metals & Mining 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 Century Aluminum Co and its competitors. Century Aluminum Co's current Beneish M-Score is -1.86. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Century Aluminum Co stock overvalued right now?
Based on GuruFocus' analysis, Century Aluminum Co (STU:EY3) is currently considered Significantly Overvalued. The stock's GF Value™ is €19.23, compared to a current price of €40.50 — trading 110.6% above its estimated fair value. The current Beneish M-Score is -1.86. Century Aluminum Co's overall GF Score™ is 66/100 with 6 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 Century Aluminum Co (STU:EY3), the current Beneish M-Score is -1.86 as of Jul. 25, 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 Century Aluminum Co (STU:EY3) Overvalued in 2026?

Based on GuruFocus' analysis, Century Aluminum Co stock appears to be overvalued. The current stock price of €40.50 is trading 110.6% above its estimated GF Value™ of €19.23. GuruFocus considers Century Aluminum Co to be Significantly Overvalued.

Key valuation signals for STU:EY3:

  • Beneish M-Score: -1.86
  • GF Value™: €19.23 vs. price of €40.50 (110.6% above fair value)
  • GF Score™: 66/100 with 6 warning signs

No single metric tells the full story. See the STU:EY3 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Century Aluminum Co Business Description

Other Exchanges CENX:USA
Address One South Wacker Drive, Suite 1000, Chicago, IL, USA, 60606
Century Aluminum Co produces primary aluminum standard grade and value-added products. The firm operates smelter facilities in the United States and Iceland. The majority of revenue is generated from Glencore, which agreed to purchase nearly all of Century Aluminum's North American production. The company produces high purity aluminum, standard-grade aluminum sow and tee bars, and value-added billet and foundry products. The company also owns a carbon anode production facility in the Netherlands.
66GF Score

Get the complete analysis for STU:EY3

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

€40.50
Price
€19.23
GF Value