With a price-to-earnings (or "P/E") ratio of 17.7x Era Co., Ltd. (SZSE:002641) may be sending bullish signals at the moment, given that almost half of all companies in China have P/E ratios greater than 32x and even P/E's higher than 60x are not unusual. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/E.

Recent times have been advantageous for Era as its earnings have been rising faster than most other companies. One possibility is that the P/E is low because investors think this strong earnings performance might be less impressive moving forward. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Does Growth Match The Low P/E?

There's an inherent assumption that a company should underperform the market for P/E ratios like Era's to be considered reasonable.

Taking a look back first, we see that the company grew earnings per share by an impressive 161% last year. However, this wasn't enough as the latest three year period has seen a very unpleasant 66% drop in EPS in aggregate. Therefore, it's fair to say the earnings growth recently has been undesirable for the company.

Shifting to the future, estimates from the four analysts covering the company suggest earnings should grow by 22% each year over the next three years. With the market predicted to deliver 26% growth per year, the company is positioned for a weaker earnings result.

In light of this, it's understandable that Era's P/E sits below the majority of other companies. It seems most investors are expecting to see limited future growth and are only willing to pay a reduced amount for the stock.

The Final Word

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.

We've established that Era maintains its low P/E on the weakness of its forecast growth being lower than the wider market, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. It's hard to see the share price rising strongly in the near future under these circumstances.

It is also worth noting that we have found 1 warning sign for Era that you need to take into consideration.

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

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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.