When close to half the companies in China have price-to-earnings ratios (or "P/E's") above 31x, you may consider Zhongtai Securities Co., Ltd. (SHSE:600918) as an attractive investment with its 25.8x P/E ratio. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

Zhongtai Securities certainly has been doing a great job lately as it's been growing earnings at a really rapid pace. One possibility is that the P/E is low because investors think this strong earnings growth might actually underperform the broader market in the near future. If that doesn't eventuate, then existing shareholders have reason to be quite optimistic about the future direction of the share price.

Want the full picture on earnings, revenue and cash flow for the company? Then our free report on Zhongtai Securities will help you shine a light on its historical performance.

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

The only time you'd be truly comfortable seeing a P/E as low as Zhongtai Securities' is when the company's growth is on track to lag the market.

Taking a look back first, we see that the company grew earnings per share by an impressive 200% last year. Despite this strong recent growth, it's still struggling to catch up as its three-year EPS frustratingly shrank by 28% overall. Accordingly, shareholders would have felt downbeat about the medium-term rates of earnings growth.

In contrast to the company, the rest of the market is expected to grow by 38% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

In light of this, it's understandable that Zhongtai Securities' P/E would sit below the majority of other companies. However, we think shrinking earnings are unlikely to lead to a stable P/E over the longer term, which could set up shareholders for future disappointment. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Final Word

It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

As we suspected, our examination of Zhongtai Securities revealed its shrinking earnings over the medium-term are contributing to its low P/E, given the market is set to grow. 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.

There are also other vital risk factors to consider before investing and we've discovered 1 warning sign for Zhongtai Securities that you should be aware of.

Of course, you might also be able to find a better stock than Zhongtai Securities. 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.