Ciena (NYSE:CIEN) has had a great run on the share market with its stock up by a significant 23% over the last three months. However, we wonder if the company's inconsistent financials would have any adverse impact on the current share price momentum. Specifically, we decided to study Ciena'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. Put another way, it reveals the company's success at turning shareholder investments into profits.

How Is ROE Calculated?

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 Ciena is:

4.8% = US$138m ÷ US$2.9b (Based on the trailing twelve months to July 2024).

The 'return' is the profit over the last twelve months. Another way to think of that is that for every $1 worth of equity, the company was able to earn $0.05 in profit.

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. Depending on how much of these profits the company reinvests or "retains", and how effectively it does so, we are then able to assess a company's earnings growth potential. Assuming all else is equal, companies that have both a higher return on equity and higher profit retention are usually the ones that have a higher growth rate when compared to companies that don't have the same features.

Ciena's Earnings Growth And 4.8% ROE

When you first look at it, Ciena's ROE doesn't look that attractive. A quick further study shows that the company's ROE doesn't compare favorably to the industry average of 18% either. Given the circumstances, the significant decline in net income by 11% seen by Ciena over the last five years is not surprising. We believe that there also might be other aspects that are negatively influencing the company's earnings prospects. For instance, the company has a very high payout ratio, or is faced with competitive pressures.

That being said, we compared Ciena's performance with the industry and were concerned when we found that while the company has shrunk its earnings, the industry has grown its earnings at a rate of 8.3% in the same 5-year period.

The basis for attaching value to a company is, to a great extent, tied to its earnings growth. What investors need to determine next is if the expected earnings growth, or the lack of it, is already built into the share price. Doing so will help them establish if the stock's future looks promising or ominous. What is CIEN worth today? The intrinsic value infographic in our free research report helps visualize whether CIEN is currently mispriced by the market.

Is Ciena Making Efficient Use Of Its Profits?

Ciena doesn't pay any regular dividends, meaning that potentially all of its profits are being reinvested in the business, which doesn't explain why the company's earnings have shrunk if it is retaining all of its profits. It looks like there might be some other reasons to explain the lack in that respect. For example, the business could be in decline.

Conclusion

Overall, we have mixed feelings about Ciena. While the company does have a high rate of profit retention, its low rate of return is probably hampering its earnings growth. With that said, we studied the latest analyst forecasts and found that while the company has shrunk its earnings in the past, analysts expect its earnings to grow in the future. To know more about the latest analysts predictions for the company, check out this visualization of analyst forecasts 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.