The worst result, after buying shares in a company (assuming no leverage), would be if you lose all the money you put in. But on the bright side, if you buy shares in a high quality company at the right price, you can gain well over 100%. For instance, the price of Westinghouse Air Brake Technologies Corporation (NYSE:WAB) stock is up an impressive 116% over the last five years. In the last week shares have slid back 1.8%.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

During five years of share price growth, Westinghouse Air Brake Technologies achieved compound earnings per share (EPS) growth of 21% per year. The EPS growth is more impressive than the yearly share price gain of 17% over the same period. Therefore, it seems the market has become relatively pessimistic about the company.

The graphic below depicts how EPS has changed over time (unveil the exact values by clicking on the image).

We know that Westinghouse Air Brake Technologies has improved its bottom line over the last three years, but what does the future have in store? Take a more thorough look at Westinghouse Air Brake Technologies' financial health with this free report on its balance sheet.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). The TSR is a return calculation that accounts for the value of cash dividends (assuming that any dividend received was reinvested) and the calculated value of any discounted capital raisings and spin-offs. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. In the case of Westinghouse Air Brake Technologies, it has a TSR of 123% for the last 5 years. That exceeds its share price return that we previously mentioned. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

It's nice to see that Westinghouse Air Brake Technologies shareholders have received a total shareholder return of 48% over the last year. That's including the dividend. That gain is better than the annual TSR over five years, which is 17%. Therefore it seems like sentiment around the company has been positive lately. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. It's always interesting to track share price performance over the longer term. But to understand Westinghouse Air Brake Technologies better, we need to consider many other factors. For example, we've discovered 1 warning sign for Westinghouse Air Brake Technologies that you should be aware of before investing here.

But note: Westinghouse Air Brake Technologies may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American exchanges.

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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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com