The Suzhou Sunmun Technology Co., Ltd. (SZSE:300522) share price has had a bad week, falling 11%. But over three years, the returns would have left most investors smiling After all, the share price is up a market-beating 88% in that time.

In light of the stock dropping 11% in the past week, we want to investigate the longer term story, and see if fundamentals have been the driver of the company's positive three-year return.

See our latest analysis for Suzhou Sunmun Technology

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

Suzhou Sunmun Technology was able to grow its EPS at 0.5% per year over three years, sending the share price higher. In comparison, the 23% per year gain in the share price outpaces the EPS growth. This suggests that, as the business progressed over the last few years, it gained the confidence of market participants. It is quite common to see investors become enamoured with a business, after a few years of solid progress. This favorable sentiment is reflected in its (fairly optimistic) P/E ratio of 49.15.

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

This free interactive report on Suzhou Sunmun Technology's earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

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 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. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. We note that for Suzhou Sunmun Technology the TSR over the last 3 years was 94%, which is better than the share price return mentioned above. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

We regret to report that Suzhou Sunmun Technology shareholders are down 34% for the year (even including dividends). Unfortunately, that's worse than the broader market decline of 11%. Having said that, it's inevitable that some stocks will be oversold in a falling market. The key is to keep your eyes on the fundamental developments. Longer term investors wouldn't be so upset, since they would have made 1.2%, each year, over five years. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. For instance, we've identified 2 warning signs for Suzhou Sunmun Technology that you should be aware of.

If you are like me, then you will not want to miss this free list of growing companies that insiders are buying.

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