When we invest, we're generally looking for stocks that outperform the market average. And while active stock picking involves risks (and requires diversification) it can also provide excess returns. For example, long term CECEP Solar Energy Co.,Ltd. (SZSE:000591) shareholders have enjoyed a 62% share price rise over the last half decade, well in excess of the market return of around 17% (not including dividends).

Since the stock has added CN¥2.5b to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

To quote Buffett, 'Ships will sail around the world but the Flat Earth Society will flourish. There will continue to be wide discrepancies between price and value in the marketplace...' 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 five years of share price growth, CECEP Solar EnergyLtd achieved compound earnings per share (EPS) growth of 7.5% per year. This EPS growth is slower than the share price growth of 10% per year, over the same period. So it's fair to assume the market has a higher opinion of the business than it did five years ago. That's not necessarily surprising considering the five-year track record of earnings growth.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

Dive deeper into CECEP Solar EnergyLtd's key metrics by checking this interactive graph of CECEP Solar EnergyLtd's earnings, revenue and cash flow.

What About Dividends?

When looking at investment returns, it is important to consider the difference between total shareholder return (TSR) and share price return. Whereas the share price return only reflects the change in the share price, the TSR includes the value of dividends (assuming they were reinvested) and the benefit of any discounted capital raising or spin-off. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. We note that for CECEP Solar EnergyLtd the TSR over the last 5 years was 82%, which is better than the share price return mentioned above. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

While the broader market gained around 3.3% in the last year, CECEP Solar EnergyLtd shareholders lost 8.7% (even including dividends). 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. On the bright side, long term shareholders have made money, with a gain of 13% per year over half a decade. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. 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 instance, we've identified 2 warning signs for CECEP Solar EnergyLtd (1 is a bit unpleasant) that you should be aware of.

Of course CECEP Solar EnergyLtd may not be the best stock to buy. So you may wish to see this free collection of growth stocks.

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.