Shaanxi Heimao Coking Co., Ltd. (SHSE:601015) shareholders should be happy to see the share price up 11% in the last month. Meanwhile over the last three years the stock has dropped hard. Indeed, the share price is down a tragic 68% in the last three years. So it's good to see it climbing back up. The rise has some hopeful, but turnarounds are often precarious.

Although the past week has been more reassuring for shareholders, they're still in the red over the last three years, so let's see if the underlying business has been responsible for the decline.

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

Over the three years that the share price declined, Shaanxi Heimao Coking's earnings per share (EPS) dropped significantly, falling to a loss. Since the company has fallen to a loss making position, it's hard to compare the change in EPS with the share price change. However, we can say we'd expect to see a falling share price in this scenario.

The company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

Dive deeper into Shaanxi Heimao Coking's key metrics by checking this interactive graph of Shaanxi Heimao Coking's earnings, revenue and cash flow.

A Different Perspective

We regret to report that Shaanxi Heimao Coking shareholders are down 32% for the year. Unfortunately, that's worse than the broader market decline of 19%. Having said that, it's inevitable that some stocks will be oversold in a falling market. The key is to keep your eyes on the fundamental developments. Longer term investors wouldn't be so upset, since they would have made 2%, each year, over five years. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. To that end, you should be aware of the 1 warning sign we've spotted with Shaanxi Heimao Coking .

But note: Shaanxi Heimao Coking may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on Chinese exchanges.

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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.