Shenzhen Anche Technologies Co., Ltd. (SZSE:300572) shareholders should be happy to see the share price up 18% in the last week. But will that repair the damage for the weary investors who have owned this stock as it declined over half a decade? Probably not. Like a ship taking on water, the share price has sunk 72% in that time. So we don't gain too much confidence from the recent recovery. The important question is if the business itself justifies a higher share price in the long term.

On a more encouraging note the company has added CN¥437m to its market cap in just the last 7 days, so let's see if we can determine what's driven the five-year loss for shareholders.

While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Over five years Shenzhen Anche Technologies' earnings per share dropped significantly, falling to a loss, with the share price also lower. Since the company has fallen to a loss making position, it's hard to compare the change in EPS with the share price change. But we would generally expect a lower price, given the situation.

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

Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here.

A Different Perspective

While the broader market lost about 13% in the twelve months, Shenzhen Anche Technologies shareholders did even worse, losing 30%. 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. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 11% per year over five years. We realise that Baron Rothschild has said investors should "buy when there is blood on the streets", but we caution that investors should first be sure they are buying a high quality business. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. For example, we've discovered 1 warning sign for Shenzhen Anche Technologies that you should be aware of before investing here.

But note: Shenzhen Anche Technologies 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.