The Hour Glass Limited's (SGX:AGS) price-to-earnings (or "P/E") ratio of 5.8x might make it look like a strong buy right now compared to the market in Singapore, where around half of the companies have P/E ratios above 13x and even P/E's above 22x are quite common. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's so limited.

For example, consider that Hour Glass' financial performance has been poor lately as its earnings have been in decline. One possibility is that the P/E is low because investors think the company won't do enough to avoid underperforming the broader market in the near future. 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.

View our latest analysis for Hour Glass

We don't have analyst forecasts, but you can see how recent trends are setting up the company for the future by checking out our free report on Hour Glass' earnings, revenue and cash flow.

How Is Hour Glass' Growth Trending?

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

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 3.8%. Still, the latest three year period has seen an excellent 151% overall rise in EPS, in spite of its unsatisfying short-term performance. Accordingly, while they would have preferred to keep the run going, shareholders would probably welcome the medium-term rates of earnings growth.

Weighing that recent medium-term earnings trajectory against the broader market's one-year forecast for expansion of 8.8% shows it's noticeably more attractive on an annualised basis.

In light of this, it's peculiar that Hour Glass' P/E sits below the majority of other companies. It looks like most investors are not convinced the company can maintain its recent growth rates.

What We Can Learn From Hour Glass' P/E?

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.

Our examination of Hour Glass revealed its three-year earnings trends aren't contributing to its P/E anywhere near as much as we would have predicted, given they look better than current market expectations. When we see strong earnings with faster-than-market growth, we assume potential risks are what might be placing significant pressure on the P/E ratio. It appears many are indeed anticipating earnings instability, because the persistence of these recent medium-term conditions would normally provide a boost to the share price.

Don't forget that there may be other risks. For instance, we've identified 1 warning sign for Hour Glass that you should be aware of.

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.