Every investor on earth makes bad calls sometimes. But really big losses can really drag down an overall portfolio. So spare a thought for the long term shareholders of Jiangxi Zhengbang Technology Co.Ltd. (SZSE:002157); the share price is down a whopping 85% in the last three years. That might cause some serious doubts about the merits of the initial decision to buy the stock, to put it mildly. And the ride hasn't got any smoother in recent times over the last year, with the price 27% lower in that time. We really feel for shareholders in this scenario. It's a good reminder of the importance of diversification, and it's worth keeping in mind there's more to life than money, anyway.

Since shareholders are down over the longer term, lets look at the underlying fundamentals over the that time and see if they've been consistent with returns.

Check out our latest analysis for Jiangxi Zhengbang TechnologyLtd

Jiangxi Zhengbang TechnologyLtd isn't currently profitable, so most analysts would look to revenue growth to get an idea of how fast the underlying business is growing. Shareholders of unprofitable companies usually expect strong revenue growth. That's because fast revenue growth can be easily extrapolated to forecast profits, often of considerable size.

In the last three years Jiangxi Zhengbang TechnologyLtd saw its revenue shrink by 52% per year. That's definitely a weaker result than most pre-profit companies report. The swift share price decline at an annual compound rate of 23%, reflects this weak fundamental performance. Never forget that loss making companies with falling revenue can and do cause losses for everyday investors. It's worth remembering that investors call buying a steeply falling share price 'catching a falling knife' because it is a dangerous pass time.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. Dive deeper into the earnings by checking this interactive graph of Jiangxi Zhengbang TechnologyLtd's earnings, revenue and cash flow.

A Different Perspective

We regret to report that Jiangxi Zhengbang TechnologyLtd shareholders are down 27% for the year. Unfortunately, that's worse than the broader market decline of 18%. 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. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 10% over the last half decade. 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. 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. Consider risks, for instance. Every company has them, and we've spotted 4 warning signs for Jiangxi Zhengbang TechnologyLtd you should know about.

But note: Jiangxi Zhengbang TechnologyLtd 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.