Long term investing is the way to go, but that doesn't mean you should hold every stock forever. It hits us in the gut when we see fellow investors suffer a loss. Anyone who held Tian Jin Bohai Chemical Co.,Ltd. (SHSE:600800) for five years would be nursing their metaphorical wounds since the share price dropped 75% in that time. And we doubt long term believers are the only worried holders, since the stock price has declined 42% over the last twelve months. Shareholders have had an even rougher run lately, with the share price down 33% in the last 90 days.

If the past week is anything to go by, investor sentiment for Tian Jin Bohai ChemicalLtd isn't positive, so let's see if there's a mismatch between fundamentals and the share price.

Tian Jin Bohai ChemicalLtd 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. When a company doesn't make profits, we'd generally hope to see good revenue growth. That's because fast revenue growth can be easily extrapolated to forecast profits, often of considerable size.

In the last half decade, Tian Jin Bohai ChemicalLtd saw its revenue increase by 29% per year. That's well above most other pre-profit companies. So on the face of it we're really surprised to see the share price has averaged a fall of 12% each year, in the same time period. It could be that the stock was over-hyped before. We'd recommend carefully checking for indications of future growth - and balance sheet threats - before considering a purchase.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

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. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

While the broader market lost about 17% in the twelve months, Tian Jin Bohai ChemicalLtd shareholders did even worse, losing 42%. 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 12% 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. 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 1 warning sign we've spotted with Tian Jin Bohai ChemicalLtd .

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.