To the annoyance of some shareholders, Shenzhen Easttop Supply Chain Management Co., Ltd. (SZSE:002889) shares are down a considerable 30% in the last month, which continues a horrid run for the company. The last month has meant the stock is now only up 3.6% during the last year.

Although its price has dipped substantially, Shenzhen Easttop Supply Chain Management's price-to-earnings (or "P/E") ratio of 22.7x might still make it look like a buy right now compared to the market in China, where around half of the companies have P/E ratios above 28x and even P/E's above 50x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/E.

As an illustration, earnings have deteriorated at Shenzhen Easttop Supply Chain Management over the last year, which is not ideal at all. It might be that many expect the disappointing earnings performance to continue or accelerate, which has repressed the P/E. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

What Are Growth Metrics Telling Us About The Low P/E?

There's an inherent assumption that a company should underperform the market for P/E ratios like Shenzhen Easttop Supply Chain Management's to be considered reasonable.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 26%. As a result, earnings from three years ago have also fallen 14% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Comparing that to the market, which is predicted to deliver 41% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we are not surprised that Shenzhen Easttop Supply Chain Management is trading at a P/E lower than the market. Nonetheless, there's no guarantee the P/E has reached a floor yet with earnings going in reverse. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Key Takeaway

Shenzhen Easttop Supply Chain Management's P/E has taken a tumble along with its share price. 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 Shenzhen Easttop Supply Chain Management maintains its low P/E on the weakness of its sliding earnings over the medium-term, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. If recent medium-term earnings trends continue, it's hard to see the share price moving strongly in either direction in the near future under these circumstances.

Having said that, be aware Shenzhen Easttop Supply Chain Management is showing 1 warning sign in our investment analysis, you should know about.

If you're unsure about the strength of Shenzhen Easttop Supply Chain Management'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.