While Jiangsu ChengXing Phosph-Chemicals Co., Ltd. (SHSE:600078) shareholders are probably generally happy, the stock hasn't had particularly good run recently, with the share price falling 19% in the last quarter. But that shouldn't obscure the pleasing returns achieved by shareholders over the last three years. In fact, the company's share price bested the return of its market index in that time, posting a gain of 76%.

After a strong gain in the past week, it's worth seeing if longer term returns have been driven by improving fundamentals.

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. 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.

Jiangsu ChengXing Phosph-Chemicals was able to grow its EPS at 58% per year over three years, sending the share price higher. However, extraordinary items have impacted recent EPS numbers. This EPS growth is higher than the 21% average annual increase in the share price. So one could reasonably conclude that the market has cooled on the stock.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

This free interactive report on Jiangsu ChengXing Phosph-Chemicals' earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

A Different Perspective

We regret to report that Jiangsu ChengXing Phosph-Chemicals shareholders are down 43% 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 9%, 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. To that end, you should be aware of the 2 warning signs we've spotted with Jiangsu ChengXing Phosph-Chemicals .

But note: Jiangsu ChengXing Phosph-Chemicals 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 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.