Euro Tech Holdings Company Limited's (NASDAQ:CLWT) price-to-earnings (or "P/E") ratio of 15.4x might make it look like a buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 20x and even P/E's above 35x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/E.

For instance, Euro Tech Holdings' 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.

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 Euro Tech Holdings' earnings, revenue and cash flow.

Does Growth Match The Low P/E?

In order to justify its P/E ratio, Euro Tech Holdings would need to produce sluggish growth that's trailing the market.

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 73%. However, a few very strong years before that means that it was still able to grow EPS by an impressive 150% in total over the last three years. Accordingly, while they would have preferred to keep the run going, shareholders would probably welcome the medium-term rates of earnings growth.

This is in contrast to the rest of the market, which is expected to grow by 16% over the next year, materially lower than the company's recent medium-term annualised growth rates.

In light of this, it's peculiar that Euro Tech Holdings' 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 Euro Tech Holdings' P/E?

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.

Our examination of Euro Tech Holdings 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.

You should always think about risks.

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

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.