When we invest, we're generally looking for stocks that outperform the market average. And in our experience, buying the right stocks can give your wealth a significant boost. For example, the Westinghouse Air Brake Technologies Corporation (NYSE:WAB) share price is up 95% in the last 5 years, clearly besting the market return of around 77% (ignoring dividends). However, more recent returns haven't been as impressive as that, with the stock returning just 52% in the last year , including dividends .

With that in mind, it's worth seeing if the company's underlying fundamentals have been the driver of long term performance, or if there are some discrepancies.

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

Over half a decade, Westinghouse Air Brake Technologies managed to grow its earnings per share at 8.5% a year. This EPS growth is slower than the share price growth of 14% per year, over the same period. So it's fair to assume the market has a higher opinion of the business than it did five years ago. That's not necessarily surprising considering the five-year track record of earnings growth.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

We know that Westinghouse Air Brake Technologies has improved its bottom line lately, but is it going to grow revenue? Check if analysts think Westinghouse Air Brake Technologies will grow revenue in the future.

What About Dividends?

It is important to consider the total shareholder return, as well as the share price return, for any given stock. Whereas the share price return only reflects the change in the share price, the TSR includes the value of dividends (assuming they were reinvested) and the benefit of any discounted capital raising or spin-off. 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 101% for the last 5 years. That exceeds its share price return that we previously mentioned. This is largely a result of its dividend payments!

A Different Perspective

It's nice to see that Westinghouse Air Brake Technologies shareholders have received a total shareholder return of 52% over the last year. That's including the dividend. That gain is better than the annual TSR over five years, which is 15%. 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. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. For instance, we've identified 1 warning sign for Westinghouse Air Brake Technologies that you should be aware of.

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: insiders have been buying them).

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.