Shenzhen Tongye Technology Co.,Ltd. (SZSE:300960) shareholders would be excited to see that the share price has had a great month, posting a 40% gain and recovering from prior weakness. Unfortunately, despite the strong performance over the last month, the full year gain of 7.2% isn't as attractive.

After such a large jump in price, given close to half the companies in China have price-to-earnings ratios (or "P/E's") below 27x, you may consider Shenzhen Tongye TechnologyLtd as a stock to avoid entirely with its 57.2x 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 Shenzhen Tongye TechnologyLtd over the last year would be more than acceptable for most companies. One possibility is that the P/E is high because investors think this respectable earnings growth will be enough to outperform the broader market in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

Does Growth Match The High P/E?

Shenzhen Tongye TechnologyLtd'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.

If we review the last year of earnings growth, the company posted a terrific increase of 18%. Despite this strong recent growth, it's still struggling to catch up as its three-year EPS frustratingly shrank by 62% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

In contrast to the company, the rest of the market is expected to grow by 36% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

With this information, we find it concerning that Shenzhen Tongye TechnologyLtd is trading at a P/E higher than the market. 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. 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.

What We Can Learn From Shenzhen Tongye TechnologyLtd's P/E?

The strong share price surge has got Shenzhen Tongye TechnologyLtd's P/E rushing to great heights as well. Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

We've established that Shenzhen Tongye TechnologyLtd currently trades on a much higher than expected P/E since its recent earnings have been in decline over the medium-term. When we see earnings heading backwards and underperforming the market forecasts, we suspect the share price is at risk of declining, sending the high P/E lower. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

Don't forget that there may be other risks. For instance, we've identified 3 warning signs for Shenzhen Tongye TechnologyLtd that you should be aware of.

If you're unsure about the strength of Shenzhen Tongye TechnologyLtd'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.

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