China Coal Energy Company Limited's (HKG:1898) price-to-earnings (or "P/E") ratio of 5.4x might make it look like a buy right now compared to the market in Hong Kong, where around half of the companies have P/E ratios above 10x and even P/E's above 19x are quite common. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

Recent times haven't been advantageous for China Coal Energy as its earnings have been falling quicker than most other companies. It seems that many are expecting the dismal earnings performance to persist, which has repressed the P/E. If you still like the company, you'd want its earnings trajectory to turn around before making any decisions. Or at the very least, you'd be hoping the earnings slide doesn't get any worse if your plan is to pick up some stock while it's out of favour.

View our latest analysis for China Coal Energy

Does Growth Match The Low P/E?

In order to justify its P/E ratio, China Coal Energy would need to produce sluggish growth that's trailing the market.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 26%. However, a few very strong years before that means that it was still able to grow EPS by an impressive 288% in total over the last three years. Although it's been a bumpy ride, it's still fair to say the earnings growth recently has been more than adequate for the company.

Turning to the outlook, the next year should generate growth of 20% as estimated by the ten analysts watching the company. With the market predicted to deliver 23% growth , the company is positioned for a weaker earnings result.

With this information, we can see why China Coal Energy is trading at a P/E lower than the market. Apparently many shareholders weren't comfortable holding on while the company is potentially eyeing a less prosperous future.

The Bottom Line On China Coal Energy's P/E

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of China Coal Energy's analyst forecasts revealed that its inferior earnings outlook is contributing to its low P/E. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

Having said that, be aware China Coal Energy is showing 1 warning sign in our investment analysis, you should know about.

If you're unsure about the strength of China Coal Energy's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.