Some Yes Optoelectronics (Group) Co., Ltd. (SZSE:002952) shareholders are probably rather concerned to see the share price fall 41% over the last three months. But over three years, the returns would have left most investors smiling In the last three years the share price is up, 74%: better than the market.

In light of the stock dropping 12% in the past week, we want to investigate the longer term story, and see if fundamentals have been the driver of the company's positive three-year return.

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 the three years of share price growth, Yes Optoelectronics (Group) actually saw its earnings per share (EPS) drop 16% per year.

So we doubt that the market is looking to EPS for its main judge of the company's value. Since the change in EPS doesn't seem to correlate with the change in share price, it's worth taking a look at other metrics.

The modest 1.7% dividend yield is unlikely to be propping up the share price. It may well be that Yes Optoelectronics (Group) revenue growth rate of 26% over three years has convinced shareholders to believe in a brighter future. In that case, the company may be sacrificing current earnings per share to drive growth, and maybe shareholder's faith in better days ahead will be rewarded.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

This free interactive report on Yes Optoelectronics (Group)'s balance sheet strength is a great place to start, if you want to investigate the stock further.

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. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. We note that for Yes Optoelectronics (Group) the TSR over the last 3 years was 85%, which is better than the share price return mentioned above. This is largely a result of its dividend payments!

A Different Perspective

It's nice to see that Yes Optoelectronics (Group) shareholders have received a total shareholder return of 41% over the last year. And that does include the dividend. That's better than the annualised return of 1.1% over half a decade, implying that the company is doing better recently. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. 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 learn about the 5 warning signs we've spotted with Yes Optoelectronics (Group) (including 1 which makes us a bit uncomfortable) .

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.