It hasn't been the best quarter for Sinomach Auto mobile Co.,Ltd (SHSE:600335) shareholders, since the share price has fallen 13% in that time. But that doesn't change the fact that the returns over the last three years have been pleasing. In fact, the company's share price bested the return of its market index in that time, posting a gain of 65%.

The past week has proven to be lucrative for Sinomach Auto mobileLtd investors, so let's see if fundamentals drove the company's three-year performance.

In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Sinomach Auto mobileLtd was able to grow its EPS at 6.6% per year over three years, sending the share price higher. In comparison, the 18% per year gain in the share price outpaces the EPS growth. So it's fair to assume the market has a higher opinion of the business than it did three years ago. It's not unusual to see the market 're-rate' a stock, after a few years of growth.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

It might be well worthwhile taking a look at our free report on Sinomach Auto mobileLtd's earnings, revenue and cash flow.

What About Dividends?

It is important to consider the total shareholder return, as well as the share price return, for any given stock. The TSR incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. As it happens, Sinomach Auto mobileLtd's TSR for the last 3 years was 71%, which exceeds the share price return mentioned earlier. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

While it's never nice to take a loss, Sinomach Auto mobileLtd shareholders can take comfort that , including dividends,their trailing twelve month loss of 9.4% wasn't as bad as the market loss of around 16%. Of course, the long term returns are far more important and the good news is that over five years, the stock has returned 2% for each year. In the best case scenario the last year is just a temporary blip on the journey to a brighter future. 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. Case in point: We've spotted 4 warning signs for Sinomach Auto mobileLtd you should be aware of, and 1 of them is a bit concerning.

For those who like to find winning investments this free list of growing companies with recent insider purchasing, could be just the ticket.

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