It's nice to see the Nanjing Quanxin Cable Technology Co., Ltd. (SZSE:300447) share price up 17% in a week. But that doesn't change the fact that the returns over the last year have been less than pleasing. After all, the share price is down 31% in the last year, significantly under-performing the market.

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

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.

Unhappily, Nanjing Quanxin Cable Technology had to report a 26% decline in EPS over the last year. We note that the 31% share price drop is very close to the EPS drop. Given the lower EPS we might have expected investors to lose confidence in the stock, but that doesn't seemed to have happened. Instead, the change in the share price seems to reduction in earnings per share, alone.

The graphic below depicts how EPS has changed over time (unveil the exact values by clicking on the image).

It might be well worthwhile taking a look at our free report on Nanjing Quanxin Cable Technology's earnings, revenue and cash flow.

A Different Perspective

While the broader market lost about 15% in the twelve months, Nanjing Quanxin Cable Technology shareholders did even worse, losing 31%. However, it could simply be that the share price has been impacted by broader market jitters. It might be worth keeping an eye on the fundamentals, in case there's a good opportunity. Longer term investors wouldn't be so upset, since they would have made 4%, 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. 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. Even so, be aware that Nanjing Quanxin Cable Technology is showing 1 warning sign in our investment analysis , you should know about...

We will like Nanjing Quanxin Cable Technology better if we see some big insider buys. While we wait, check out this free list of growing companies with considerable, recent, insider buying.

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.