Flying Technology Co., Ltd. (SHSE:603488) shareholders would be excited to see that the share price has had a great month, posting a 30% gain and recovering from prior weakness. Looking further back, the 12% rise over the last twelve months isn't too bad notwithstanding the strength over the last 30 days.

Since its price has surged higher, given around half the companies in China have price-to-earnings ratios (or "P/E's") below 27x, you may consider Flying Technology as a stock to potentially avoid with its 32.7x P/E ratio. However, the P/E might be high for a reason and it requires further investigation to determine if it's justified.

Flying Technology certainly has been doing a great job lately as it's been growing earnings at a really rapid pace. The P/E is probably high because investors think this strong earnings growth will be enough to outperform the broader market in the near future. If not, then existing shareholders might be a little nervous about the viability of the share price.

How Is Flying Technology's Growth Trending?

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

Retrospectively, the last year delivered an exceptional 40% gain to the company's bottom line. Still, incredibly EPS has fallen 33% in total from three years ago, which is quite disappointing. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Comparing that to the market, which is predicted to deliver 36% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we find it concerning that Flying Technology is trading at a P/E higher than the market. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. There's a very good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the recent negative growth rates.

What We Can Learn From Flying Technology's P/E?

Flying Technology's P/E is getting right up there since its shares have risen strongly. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

Our examination of Flying Technology revealed its shrinking earnings over the medium-term aren't impacting its high P/E anywhere near as much as we would have predicted, given the market is set to grow. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

And what about other risks? Every company has them, and we've spotted 3 warning signs for Flying Technology (of which 1 is significant!) you should know about.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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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.