Most readers would already be aware that Westinghouse Air Brake Technologies' (NYSE:WAB) stock increased significantly by 11% over the past three months. We wonder if and what role the company's financials play in that price change as a company's long-term fundamentals usually dictate market outcomes. Particularly, we will be paying attention to Westinghouse Air Brake Technologies' ROE today.

ROE or return on equity is a useful tool to assess how effectively a company can generate returns on the investment it received from its shareholders. Simply put, it is used to assess the profitability of a company in relation to its equity capital.

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 Westinghouse Air Brake Technologies is:

11% = US$1.1b ÷ US$10b (Based on the trailing twelve months to March 2025).

The 'return' refers to a company's earnings over the last year. One way to conceptualize this is that for each $1 of shareholders' capital it has, the company made $0.11 in profit.

What Is The Relationship Between ROE And 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 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.

Westinghouse Air Brake Technologies' Earnings Growth And 11% ROE

On the face of it, Westinghouse Air Brake Technologies' ROE is not much to talk about. However, its ROE is similar to the industry average of 13%, so we won't completely dismiss the company. Looking at Westinghouse Air Brake Technologies' exceptional 21% five-year net income growth in particular, we are definitely impressed. Taking into consideration that the ROE is not particularly high, we reckon that there could also be other factors at play which could be influencing the company's growth. For instance, the company has a low payout ratio or is being managed efficiently.

Next, on comparing with the industry net income growth, we found that Westinghouse Air Brake Technologies' growth is quite high when compared to the industry average growth of 16% in the same period, which is great to see.

Earnings growth is an important metric to consider when valuing a stock. The investor should try to establish if the expected growth or decline in earnings, whichever the case may be, is priced in. By doing so, they will have an idea if the stock is headed into clear blue waters or if swampy waters await. Is WAB fairly valued? This infographic on the company's intrinsic value has everything you need to know.

Is Westinghouse Air Brake Technologies Efficiently Re-investing Its Profits?

Westinghouse Air Brake Technologies' ' three-year median payout ratio is on the lower side at 16% implying that it is retaining a higher percentage (84%) of its profits. This suggests that the management is reinvesting most of the profits to grow the business as evidenced by the growth seen by the company.

Besides, Westinghouse Air Brake Technologies has been paying dividends for at least ten years or more. This shows that the company is committed to sharing profits with its shareholders. Our latest analyst data shows that the future payout ratio of the company is expected to drop to 12% over the next three years. As a result, the expected drop in Westinghouse Air Brake Technologies' payout ratio explains the anticipated rise in the company's future ROE to 16%, over the same period.

Conclusion

In total, it does look like Westinghouse Air Brake Technologies has some positive aspects to its business. Even in spite of the low rate of return, the company has posted impressive earnings growth as a result of reinvesting heavily into its business. That being so, a study of the latest analyst forecasts show that the company is expected to see a slowdown in its future earnings growth.

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.