The Maxicity Holdings Limited (HKG:2295) share price has done very well over the last month, posting an excellent gain of 50%. The last 30 days bring the annual gain to a very sharp 45%.

After such a large jump in price, given close to half the companies in Hong Kong have price-to-earnings ratios (or "P/E's") below 9x, you may consider Maxicity Holdings as a stock to avoid entirely with its 50.7x P/E ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

For instance, Maxicity Holdings' receding earnings in recent times would have to be some food for thought. One possibility is that the P/E is high because investors think the company will still do enough to outperform the broader market in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

Check out our latest analysis for Maxicity Holdings

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

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

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 18%. The last three years don't look nice either as the company has shrunk EPS by 20% in aggregate. Therefore, it's fair to say the earnings growth recently has been undesirable for the company.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 23% shows it's an unpleasant look.

In light of this, it's alarming that Maxicity Holdings' P/E sits above the majority of other companies. Apparently many investors in the company are way more bullish than recent times would indicate and aren't willing to let go of their stock at any price. 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 Maxicity Holdings' P/E?

The strong share price surge has got Maxicity Holdings' P/E rushing to great heights as well. 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.

Our examination of Maxicity Holdings 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. When we see earnings heading backwards and underperforming the market forecasts, we suspect the share price is at risk of declining, sending the high P/E lower. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these prices as being reasonable.

You need to take note of risks, for example - Maxicity Holdings has 2 warning signs (and 1 which is potentially serious) we think 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.