Despite an already strong run, Shenzhen Guangju Energy Co., Ltd. (SZSE:000096) shares have been powering on, with a gain of 28% in the last thirty days. Looking back a bit further, it's encouraging to see the stock is up 29% in the last year.

Following the firm bounce in price, Shenzhen Guangju Energy's price-to-earnings (or "P/E") ratio of 71.5x 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 34x and even P/E's below 20x 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.

Recent times have been quite advantageous for Shenzhen Guangju Energy as its earnings have been rising very briskly. The P/E is probably high because investors think this strong earnings growth will be enough to outperform the broader market in the near future. If not, then existing shareholders might be a little nervous about the viability of the share price.

Does Growth Match The High P/E?

Shenzhen Guangju Energy'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.

Taking a look back first, we see that the company grew earnings per share by an impressive 75% last year. However, this wasn't enough as the latest three year period has seen a very unpleasant 11% drop in EPS in aggregate. 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 40% 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 Guangju Energy 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.

The Key Takeaway

The strong share price surge has got Shenzhen Guangju Energy's P/E rushing to great heights as well. 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 Shenzhen Guangju Energy 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.

Before you settle on your opinion, we've discovered 1 warning sign for Shenzhen Guangju Energy that you should be aware of.

If you're unsure about the strength of Shenzhen Guangju Energy'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.