Century Aluminum (NASDAQ:CENX) has had a great run on the share market with its stock up by a significant 18% over the last three months. Given the company's impressive performance, we decided to study its financial indicators more closely as a company's financial health over the long-term usually dictates market outcomes. Specifically, we decided to study Century Aluminum's ROE in this article.

Return on equity or ROE is a key measure used to assess how efficiently a company's management is utilizing the company's capital. In other words, it is a profitability ratio which measures the rate of return on the capital provided by the company's shareholders.

How To Calculate Return On Equity?

ROE can be calculated by using the formula:

Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity

So, based on the above formula, the ROE for Century Aluminum is:

46% = US$290m ÷ US$629m (Based on the trailing twelve months to September 2024).

The 'return' refers to a company's earnings over the last year. So, this means that for every $1 of its shareholder's investments, the company generates a profit of $0.46.

What Has ROE Got To Do With Earnings Growth?

Thus far, we have learned that ROE measures how efficiently a company is generating its profits. Based on how much of its profits the company chooses to reinvest or "retain", we are then able to evaluate a company's future ability to generate profits. Assuming everything else remains unchanged, the higher the ROE and profit retention, the higher the growth rate of a company compared to companies that don't necessarily bear these characteristics.

Century Aluminum's Earnings Growth And 46% ROE

To begin with, Century Aluminum has a pretty high ROE which is interesting. Additionally, the company's ROE is higher compared to the industry average of 12% which is quite remarkable. So, the substantial 44% net income growth seen by Century Aluminum over the past five years isn't overly surprising.

We then compared Century Aluminum's net income growth with the industry and we're pleased to see that the company's growth figure is higher when compared with the industry which has a growth rate of 22% in the same 5-year period.

Earnings growth is an important metric to consider when valuing a stock. It's important for an investor to know whether the market has priced in the company's expected earnings growth (or decline). By doing so, they will have an idea if the stock is headed into clear blue waters or if swampy waters await. Is Century Aluminum fairly valued compared to other companies? These 3 valuation measures might help you decide.

Is Century Aluminum Efficiently Re-investing Its Profits?

Given that Century Aluminum doesn't pay any regular dividends to its shareholders, we infer that the company has been reinvesting all of its profits to grow its business.

Conclusion

In total, we are pretty happy with Century Aluminum's performance. Particularly, we like that the company is reinvesting heavily into its business, and at a high rate of return. Unsurprisingly, this has led to an impressive earnings growth. Having said that, on studying current analyst estimates, we were concerned to see that while the company has grown its earnings in the past, analysts expect its earnings to shrink in the future. Are these analysts expectations based on the broad expectations for the industry, or on the company's fundamentals? Click here to be taken to our analyst's forecasts page for the company.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.