In order to justify the effort of selecting individual stocks, it's worth striving to beat the returns from a market index fund. But if you try your hand at stock picking, your risk returning less than the market. We regret to report that long term Edan Instruments, Inc. (SZSE:300206) shareholders have had that experience, with the share price dropping 49% in three years, versus a market decline of about 16%. And more recent buyers are having a tough time too, with a drop of 27% in the last year. Furthermore, it's down 15% in about a quarter. That's not much fun for holders.

With the stock having lost 8.9% in the past week, it's worth taking a look at business performance and seeing if there's any red flags.

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. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

Edan Instruments saw its EPS decline at a compound rate of 25% per year, over the last three years. In comparison the 20% compound annual share price decline isn't as bad as the EPS drop-off. So, despite the prior disappointment, shareholders must have some confidence the situation will improve, longer term.

The company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

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

What About Dividends?

It is important to consider the total shareholder return, as well as the share price return, for any given stock. The TSR is a return calculation that accounts for the value of cash dividends (assuming that any dividend received was reinvested) and the calculated value of any discounted capital raisings and spin-offs. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. In the case of Edan Instruments, it has a TSR of -45% for the last 3 years. That exceeds its share price return that we previously mentioned. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

While the broader market lost about 15% in the twelve months, Edan Instruments 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 8% 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. It's always interesting to track share price performance over the longer term. But to understand Edan Instruments better, we need to consider many other factors. To that end, you should be aware of the 1 warning sign we've spotted with Edan Instruments .

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.