Guobo Electronics Co., Ltd.'s (SHSE:688375) price-to-earnings (or "P/E") ratio of 68.3x might make it look like a strong sell right now compared to the market in China, where around half of the companies have P/E ratios below 35x and even P/E's below 20x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

Recent times haven't been advantageous for Guobo Electronics as its earnings have been falling quicker than most other companies. One possibility is that the P/E is high because investors think the company will turn things around completely and accelerate past most others in the market. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Is There Enough Growth For Guobo Electronics?

The only time you'd be truly comfortable seeing a P/E as steep as Guobo Electronics' is when the company's growth is on track to outshine the market decidedly.

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 18%. That put a dampener on the good run it was having over the longer-term as its three-year EPS growth is still a noteworthy 13% in total. So we can start by confirming that the company has generally done a good job of growing earnings over that time, even though it had some hiccups along the way.

Turning to the outlook, the next year should generate growth of 43% as estimated by the five analysts watching the company. Meanwhile, the rest of the market is forecast to expand by 40%, which is not materially different.

With this information, we find it interesting that Guobo Electronics is trading at a high P/E compared to the market. It seems most investors are ignoring the fairly average growth expectations and are willing to pay up for exposure to the stock. These shareholders may be setting themselves up for disappointment if the P/E falls to levels more in line with the growth outlook.

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 Guobo Electronics currently trades on a higher than expected P/E since its forecast growth is only in line with the wider market. When we see an average earnings outlook with market-like growth, we suspect the share price is at risk of declining, sending the high P/E lower. This places shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

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

If these risks are making you reconsider your opinion on Guobo Electronics, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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.