If you are building a properly diversified stock portfolio, the chances are some of your picks will perform badly. Long term TianJin 712 Communication & Broadcasting Co., Ltd. (SHSE:603712) shareholders know that all too well, since the share price is down considerably over three years. Sadly for them, the share price is down 55% in that time. The more recent news is of little comfort, with the share price down 39% in a year.

It's worthwhile assessing if the company's economics have been moving in lockstep with these underwhelming shareholder returns, or if there is some disparity between the two. So let's do just that.

While TianJin 712 Communication & Broadcasting made a small profit, in the last year, we think that the market is probably more focussed on the top line growth at the moment. Generally speaking, we'd consider a stock like this alongside loss-making companies, simply because the quantum of the profit is so low. It would be hard to believe in a more profitable future without growing revenues.

Over the last three years, TianJin 712 Communication & Broadcasting's revenue dropped 4.3% per year. That's not what investors generally want to see. The share price decline of 16% compound, over three years, is understandable given the company doesn't have profits to boast of, and revenue is moving in the wrong direction. Having said that, if growth is coming in the future, now may be the low ebb for the company. We don't generally like to own companies that lose money and can't grow revenues. But any company is worth looking at when it makes a maiden profit.

You can see below how earnings and revenue have changed over time (discover the exact values by clicking on the image).

Balance sheet strength is crucial. It might be well worthwhile taking a look at our free report on how its financial position has changed over time.

A Different Perspective

Investors in TianJin 712 Communication & Broadcasting had a tough year, with a total loss of 38% (including dividends), against a market gain of about 11%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 4% 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. 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. To that end, you should be aware of the 2 warning signs we've spotted with TianJin 712 Communication & Broadcasting .

But note: TianJin 712 Communication & Broadcasting 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.