Aeso Holding Limited (HKG:8341) shares have had a really impressive month, gaining 43% after a shaky period beforehand. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 24% in the last twelve months.

In spite of the firm bounce in price, Aeso Holding's price-to-earnings (or "P/E") ratio of 2.1x 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 9x and even P/E's above 19x 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 instance, Aeso Holding's receding earnings in recent times would have to be some food for thought. 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. However, if this doesn't eventuate then existing shareholders may be feeling optimistic about the future direction of the share price.

Check out our latest analysis for Aeso Holding

Does Growth Match The Low P/E?

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

Retrospectively, the last year delivered a frustrating 36% decrease to the company's bottom line. This has erased any of its gains during the last three years, with practically no change in EPS being achieved in total. So it appears to us that the company has had a mixed result in terms of growing earnings over that time.

Weighing that recent medium-term earnings trajectory against the broader market's one-year forecast for expansion of 23% shows it's noticeably less attractive on an annualised basis.

With this information, we can see why Aeso Holding 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.

The Key Takeaway

Aeso Holding's recent share price jump still sees its P/E sitting firmly flat on the ground. 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 Aeso Holding maintains its low P/E on the weakness of its recent three-year growth being lower than the wider market forecast, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. If recent medium-term earnings trends continue, it's hard to see the share price rising strongly in the near future under these circumstances.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 3 warning signs with Aeso Holding (at least 1 which makes us a bit uncomfortable), and understanding these should be part of your investment process.

Of course, you might also be able to find a better stock than Aeso Holding. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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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.