Taking the occasional loss comes part and parcel with investing on the stock market. And unfortunately for Zhejiang Tony Electronic Co., Ltd (SHSE:603595) shareholders, the stock is a lot lower today than it was a year ago. In that relatively short period, the share price has plunged 64%. Longer term shareholders haven't suffered as badly, since the stock is down a comparatively less painful 6.6% in three years. Furthermore, it's down 33% in about a quarter. That's not much fun for holders.

After losing 20% this past week, it's worth investigating the company's fundamentals to see what we can infer from past performance.

In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. 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.

Zhejiang Tony Electronic fell to a loss making position during the year. Buyers no doubt think it's a temporary situation, but those with a nose for quality have low tolerance for losses. We hope for shareholders' sake that the company becomes profitable again soon.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

This free interactive report on Zhejiang Tony Electronic's earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

A Different Perspective

While the broader market lost about 20% in the twelve months, Zhejiang Tony Electronic shareholders did even worse, losing 64% (even including dividends). 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. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 6% per year over five years. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. 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. For example, we've discovered 1 warning sign for Zhejiang Tony Electronic that you should be aware of before investing here.

If you are like me, then you will not want to miss this free list of growing companies that insiders are 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.