YaGuang Technology Group Company Limited (SZSE:300123) shareholders should be happy to see the share price up 10% in the last week. Meanwhile over the last three years the stock has dropped hard. Tragically, the share price declined 58% in that time. So it is really good to see an improvement. After all, could be that the fall was overdone.

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.

YaGuang Technology Group wasn't profitable in the last twelve months, it is unlikely we'll see a strong correlation between its share price and its earnings per share (EPS). Arguably revenue is our next best option. Generally speaking, companies without profits are expected to grow revenue every year, and at a good clip. Some companies are willing to postpone profitability to grow revenue faster, but in that case one would hope for good top-line growth to make up for the lack of earnings.

In the last three years, YaGuang Technology Group saw its revenue grow by 1.1% per year, compound. That's not a very high growth rate considering it doesn't make profits. It's likely this weak growth has contributed to an annualised return of 16% for the last three years. When a stock falls hard like this, some investors like to add the company to a watchlist (in case the business recovers, longer term). After all, growing a business isn't easy, and the process will not always be smooth.

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

This free interactive report on YaGuang Technology Group's balance sheet strength is a great place to start, if you want to investigate the stock further.

A Different Perspective

While the broader market lost about 16% in the twelve months, YaGuang Technology Group shareholders did even worse, losing 36%. 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. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 8% over the last half decade. 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 YaGuang Technology Group that you should be aware of before investing here.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of companies that have proven they can grow earnings.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com