Ling Yue Services Group Limited (HKG:2165) shares have had a horrible month, losing 29% after a relatively good period beforehand. Looking at the bigger picture, even after this poor month the stock is up 71% in the last year.

Even after such a large drop in price, Ling Yue Services Group's price-to-earnings (or "P/E") ratio of 2.7x might still make it look like a strong 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 20x are quite common. However, the P/E might be quite low for a reason and it requires further investigation to determine if it's justified.

The earnings growth achieved at Ling Yue Services Group over the last year would be more than acceptable for most companies. It might be that many expect the respectable earnings performance to degrade substantially, which has repressed the P/E. 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.

What Are Growth Metrics Telling Us About The Low P/E?

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

If we review the last year of earnings growth, the company posted a terrific increase of 25%. EPS has also lifted 14% in aggregate from three years ago, mostly thanks to the last 12 months of growth. Therefore, it's fair to say the earnings growth recently has been respectable for the company.

Weighing that recent medium-term earnings trajectory against the broader market's one-year forecast for expansion of 22% shows it's noticeably less attractive on an annualised basis.

With this information, we can see why Ling Yue Services Group is trading at a P/E lower than the market. It seems most investors are expecting to see the recent limited growth rates continue into the future and are only willing to pay a reduced amount for the stock.

What We Can Learn From Ling Yue Services Group's P/E?

Ling Yue Services Group's P/E looks about as weak as its stock price lately. While the price-to-earnings ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of earnings expectations.

We've established that Ling Yue Services Group maintains its low P/E on the weakness of its recent three-year growth being lower than the wider market forecast, as expected. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. Unless the recent medium-term conditions improve, they will continue to form a barrier for the share price around these levels.

Having said that, be aware Ling Yue Services Group is showing 1 warning sign in our investment analysis, you should know about.

You might be able to find a better investment than Ling Yue Services Group. If you want a selection of possible candidates, check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.