When close to half the companies in Hong Kong have price-to-earnings ratios (or "P/E's") below 9x, you may consider Zhongyu Energy Holdings Limited (HKG:3633) as a stock to avoid entirely with its 51.8x P/E ratio. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

The earnings growth achieved at Zhongyu Energy Holdings over the last year would be more than acceptable for most companies. It might be that many expect the respectable earnings performance to beat most other companies over the coming period, which has increased investors’ willingness to pay up for the stock. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

See our latest analysis for Zhongyu Energy Holdings

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

Does Growth Match The High P/E?

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

Taking a look back first, we see that the company grew earnings per share by an impressive 29% last year. Still, incredibly EPS has fallen 80% in total from three years ago, which is quite disappointing. 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 22% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

In light of this, it's alarming that Zhongyu Energy Holdings' P/E sits above the majority of other companies. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh heavily on the share price eventually.

The Key Takeaway

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Zhongyu Energy Holdings currently trades on a much higher than expected P/E since its recent earnings have been in decline over the medium-term. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these prices as being reasonable.

And what about other risks? Every company has them, and we've spotted 2 warning signs for Zhongyu Energy Holdings you should know about.

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.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.