Jiangsu Tongguang Electronic Wire & Cable Co., Ltd.'s (SZSE:300265) price-to-earnings (or "P/E") ratio of 56.9x might make it look like a strong sell right now compared to the market in China, where around half of the companies have P/E ratios below 27x and even P/E's below 16x are quite common. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

As an illustration, earnings have deteriorated at Jiangsu Tongguang Electronic Wire & Cable over the last year, which is not ideal at all. It might be that many expect the company to still outplay most other companies over the coming period, which has kept the P/E from collapsing. If not, then existing shareholders may be quite nervous about the viability of the share price.

See our latest analysis for Jiangsu Tongguang Electronic Wire & Cable

Does Growth Match The High P/E?

Jiangsu Tongguang Electronic Wire & Cable'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 24% decrease to the company's bottom line. Regardless, EPS has managed to lift by a handy 12% in aggregate from three years ago, thanks to the earlier period of growth. Although it's been a bumpy ride, it's still fair to say the earnings growth recently has been mostly respectable for the company.

This is in contrast to the rest of the market, which is expected to grow by 35% over the next year, materially higher than the company's recent medium-term annualised growth rates.

In light of this, it's alarming that Jiangsu Tongguang Electronic Wire & Cable's 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 good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with recent growth rates.

The Key Takeaway

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 Jiangsu Tongguang Electronic Wire & Cable revealed its three-year earnings trends aren't impacting its high P/E anywhere near as much as we would have predicted, given they look worse than current market expectations. Right now we are increasingly uncomfortable with the high P/E as this earnings performance isn't likely 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.

Before you take the next step, you should know about the 3 warning signs for Jiangsu Tongguang Electronic Wire & Cable (1 is a bit unpleasant!) that we have uncovered.

If you're unsure about the strength of Jiangsu Tongguang Electronic Wire & Cable's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.