With a price-to-earnings (or "P/E") ratio of 66.5x Sunwave Communications Co.Ltd (SZSE:002115) may be sending very bearish signals at the moment, given that almost half of all companies in China have P/E ratios under 28x and even P/E's lower than 17x are not unusual. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

While the market has experienced earnings growth lately, Sunwave CommunicationsLtd's earnings have gone into reverse gear, which is not great. It might be that many expect the dour earnings performance to recover substantially, which has kept the P/E from collapsing. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Does Growth Match The High P/E?

Sunwave CommunicationsLtd's P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Retrospectively, the last year delivered a frustrating 63% decrease to the company's bottom line. This means it has also seen a slide in earnings over the longer-term as EPS is down 44% in total over the last three years. Therefore, it's fair to say the earnings growth recently has been undesirable for the company.

Turning to the outlook, the next year should generate growth of 296% as estimated by the only analyst watching the company. Meanwhile, the rest of the market is forecast to only expand by 36%, which is noticeably less attractive.

In light of this, it's understandable that Sunwave CommunicationsLtd's P/E sits above the majority of other companies. Apparently shareholders aren't keen to offload something that is potentially eyeing a more prosperous future.

The Final Word

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 Sunwave CommunicationsLtd maintains its high P/E on the strength of its forecast growth being higher than the wider market, as expected. At this stage investors feel the potential for a deterioration in earnings isn't great enough to justify a lower P/E ratio. It's hard to see the share price falling strongly in the near future under these circumstances.

Don't forget that there may be other risks. For instance, we've identified 2 warning signs for Sunwave CommunicationsLtd that you should be aware of.

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

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.

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