For many investors, the main point of stock picking is to generate higher returns than the overall market. But its virtually certain that sometimes you will buy stocks that fall short of the market average returns. We regret to report that long term AECC Aviation Power Co.,Ltd (SHSE:600893) shareholders have had that experience, with the share price dropping 44% in three years, versus a market decline of about 20%. And the ride hasn't got any smoother in recent times over the last year, with the price 27% lower in that time.

Now let's have a look at the company's fundamentals, and see if the long term shareholder return has matched the performance of the underlying business.

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

AECC Aviation PowerLtd saw its EPS decline at a compound rate of 5.1% per year, over the last three years. The share price decline of 18% is actually steeper than the EPS slippage. So it's likely that the EPS decline has disappointed the market, leaving investors hesitant to buy. Of course, with a P/E ratio of 67.50, the market remains optimistic.

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

It's probably worth noting that the CEO is paid less than the median at similar sized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. It might be well worthwhile taking a look at our free report on AECC Aviation PowerLtd's earnings, revenue and cash flow.

A Different Perspective

While the broader market lost about 17% in the twelve months, AECC Aviation PowerLtd shareholders did even worse, losing 26% (even including dividends). 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. On the bright side, long term shareholders have made money, with a gain of 6% per year over half a decade. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. 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. Even so, be aware that AECC Aviation PowerLtd is showing 1 warning sign in our investment analysis , you should know about...

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this free list of companies we expect will 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.