Century Aluminum Co (STU:EY3) ROE %: 138.73% (As of Mar. 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 ROE %?

Century Aluminum Co STU:EY3 +0.12% 66 ROE % is 138.73% as of Mar. 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 2,392 Metals & Mining companies, Century Aluminum Co ranks better than 94.94% on this metric.

ROE % is calculated as Net Income divided by its average Total Stockholders Equity over a certain period of time. Century Aluminum Co's annualized net income for the quarter that ended in Mar. 2026 was €1,168 Mil. Century Aluminum Co's average Total Stockholders Equity over the quarter that ended in Mar. 2026 was €842 Mil. Therefore, Century Aluminum Co's annualized ROE % for the quarter that ended in Mar. 2026 was 138.73%.

The historical rank and industry rank for Century Aluminum Co's ROE % or its related term are showing as below:

STU:EY3' s ROE % Range Over the Past 10 Years
Min: -34.56   Med: -9.78   Max: 64.15
Current: 42.13

During the past 13 years, Century Aluminum Co's highest ROE % was 64.15%. The lowest was -34.56%. And the median was -9.78%.

STU:EY3's ROE % is ranked better than
94.94% of 2392 companies
in the Metals & Mining industry
Industry Median: -16.28 vs STU:EY3: 42.13

Century Aluminum Co  (STU:EY3) ROE % Explanation

ROE % measures the rate of return on the ownership interest (shareholder's equity) of the common stock owners. It measures a firm's efficiency at generating profits from every unit of shareholders' equity (also known as net assets or assets minus liabilities). ROE % shows how well a company uses investment funds to generate earnings growth. ROE %s between 15% and 20% are considered desirable.

The factors that affect a company's ROE % can be illustrated with the three-step DuPont Analysis:

ROE %(Q: Mar. 2026 )
=Net Income/Total Stockholders Equity
=1167.748/841.755
=(Net Income / Revenue )*(Revenue / Total Assets)*(Total Assets / Total Stockholders Equity)
=(1167.748 / 2246.232)*(2246.232 / 2117.235)*(2117.235 / 841.755)
=Net Margin %*Asset Turnover*Equity Multiplier
=51.99 %*1.0609*2.5153
=ROA %*Equity Multiplier
=55.16 %*2.5153
=138.73 %

With this breakdown, it is clear that if a company grows its Net Profit Margin, its Asset Turnover, or its Leverage, it can grow its ROE %.

The factors that affect a company's ROE % can also be illustrated with the five-step DuPont Analysis:

ROE %(Q: Mar. 2026 )
=Net Income/Total Stockholders Equity
=1167.748/841.755
=(Net Income / Pre-Tax Income) * (Pre-Tax Income / Operating Income) * (Operating Income / Revenue) * (Revenue / Total Assets) * (Total Assets / Total Stockholders Equity)
= (1167.748 / 1137.648) * (1137.648 / 297.904) * (297.904 / 2246.232) * (2246.232 / 2117.235) * (2117.235 / 841.755)
= Tax Burden * Interest Burden * Operating Margin % * Asset Turnover * Equity Multiplier
= 1.0265 * 3.8188 * 13.26 % * 1.0609 * 2.5153
=138.73 %

Note: The net income data used here is four times the quarterly (Mar. 2026) net income data. The Revenue data used here is four times the quarterly (Mar. 2026) revenue data. The same rule applies to Pre-Tax Income and Operating Income.
* In the five-step DuPont Analysis, Operating Income is only available for non-financial companies. Thus, for Insurance companies, we use EBIT as a substitution of Operating Income. For Banks, both Operating Income and EBIT is unavailable. Thus we combined Interest Burden and Operating Margin % into Pretax Margin %, and the DuPont Analysis is divided into four components instead.

* 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.


Be Aware

Net Income is used.

Because a company can increase its ROE % by having more financial leverage, it is important to watch the equity multiplier when investing in high ROE % companies. Like ROA %, ROE % is calculated with only 12 months data. Fluctuations in company's earnings or business cycles can affect the ratio drastically. It is important to look at the ratio from a long term perspective.

Asset light businesses require very few assets to generate very high earnings. Their ROE %s can be extremely high.


Century Aluminum Co ROE % Related Terms


Century Aluminum Co ROE % Historical Data

* Premium members only.

The historical data trend for Century Aluminum Co's ROE % 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 ROE % Chart

Century Aluminum Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
ROE %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -36.00 -3.55 -11.24 65.03 5.28

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
ROE % 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 16.46 -2.45 8.06 0.93 138.73

STU:EY3 vs CSTM, KALU, AA: ROE % Comparison

For the Aluminum subindustry, Century Aluminum Co's ROE %, along with its competitors' market caps and ROE % 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 ROE % vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Century Aluminum Co's ROE % distribution charts can be found below:

* The bar in red indicates where Century Aluminum Co's ROE % falls into.


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

Century Aluminum Co ROE % Calculation

Century Aluminum Co's annualized ROE % for the fiscal year that ended in Dec. 2025 is calculated as

ROE %=Net Income (A: Dec. 2025 )/( (Total Stockholders Equity (A: Dec. 2024 )+Total Stockholders Equity (A: Dec. 2025 ))/ count )
=35.697/( (663.152+687.982)/ 2 )
=35.697/675.567
=5.28 %

Century Aluminum Co's annualized ROE % for the quarter that ended in Mar. 2026 is calculated as

ROE %=Net Income (Q: Mar. 2026 )/( (Total Stockholders Equity (Q: Dec. 2025 )+Total Stockholders Equity (Q: Mar. 2026 ))/ count )
=1167.748/( (687.982+995.528)/ 2 )
=1167.748/841.755
=138.73 %

* 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.

In the calculation of annual ROE %, the net income of the last fiscal year and the average total shareholder equity over the fiscal year are used. In calculating the quarterly data, the net income data used here is four times the quarterly (Mar. 2026) net income data. ROE % is displayed in the 30-year financial page.

Frequently Asked Questions Learn more about ROE % →
What does a ROE % of 138.73% mean?
Century Aluminum Co (STU:EY3) has a ROE % of 138.73% as of Mar. 2026. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Century Aluminum Co and its competitors. According to the industry distribution chart, Century Aluminum Co ranks #121 out of 2392 companies in the Metals & Mining industry, placing it in the top 5.1%.
Is Century Aluminum Co's ROE % too high?
Century Aluminum Co's current ROE % is 138.73%. Based on the distribution chart, Century Aluminum Co ranks #121 out of 2392 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers. 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 ROE % compare to CSTM and KALU?
According to the Metals & Mining industry distribution chart, Century Aluminum Co ranks #121 out of 2392 companies for ROE %. This places Century Aluminum Co in the top 5% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROE % for a Metals & Mining company?
A good ROE % depends on the Metals & Mining industry context. However, ROE % 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 ROE % mean?
A high ROE % can signal that a stock is expensive relative to its fundamentals. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Century Aluminum Co and its competitors. Century Aluminum Co's current ROE % is 138.73%. 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 ROE % is 138.73%. 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 ROE % calculated?
ROE % is calculated from a company's financial statements. For Century Aluminum Co (STU:EY3), the current ROE % is 138.73% as of Mar. 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:

  • ROE %: 138.73%
  • 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

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

€40.50
Price
€19.23
GF Value