The most you can lose on any stock (assuming you don't use leverage) is 100% of your money. But in contrast you can make much more than 100% if the company does well. For instance the Haibo Heavy Engineering Science and Technology Co., Ltd. (SZSE:300517) share price is 104% higher than it was three years ago. Most would be happy with that. Also pleasing for shareholders was the 45% gain in the last three months.

Since the stock has added CN¥444m to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

View our latest analysis for Haibo Heavy Engineering Science and Technology

While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

During three years of share price growth, Haibo Heavy Engineering Science and Technology achieved compound earnings per share growth of 18% per year. This EPS growth is lower than the 27% average annual increase in the share price. This suggests that, as the business progressed over the last few years, it gained the confidence of market participants. It's not unusual to see the market 're-rate' a stock, after a few years of growth. This optimism is also reflected in the fairly generous P/E ratio of 58.46.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. This free interactive report on Haibo Heavy Engineering Science and Technology's earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

A Different Perspective

It's good to see that Haibo Heavy Engineering Science and Technology has rewarded shareholders with a total shareholder return of 38% in the last twelve months. Of course, that includes the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 13% per year), it would seem that the stock's performance has improved in recent times. In the best case scenario, this may hint at some real business momentum, implying that now could be a great time to delve deeper. 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 Haibo Heavy Engineering Science and Technology 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 CN 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.