China Yuchai International's (NYSE:CYD) 168% return outpaced the company's earnings growth over the same one-year period

Unless you borrow money to invest, the potential losses are limited. But when you pick a company that is really flourishing, you can make more than 100%. For example, the China Yuchai International Limited (NYSE:CYD) share price had more than doubled in just one year - up 153%. It's also up 36% in about a month. Looking back further, the stock price is 151% higher than it was three years ago.

Since the stock has added US$59m to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

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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 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.

China Yuchai International was able to grow EPS by 18% in the last twelve months. The share price gain of 153% certainly outpaced the EPS growth. This indicates that the market is now more optimistic about the stock.

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

We know that China Yuchai International has improved its bottom line lately, but is it going to grow revenue? This free report showing analyst revenue forecasts should help you figure out if the EPS growth can be sustained.

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. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. In the case of China Yuchai International, it has a TSR of 168% for the last 1 year. 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

It's nice to see that China Yuchai International shareholders have received a total shareholder return of 168% over the last year. That's including the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 17% 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. Take risks, for example - China Yuchai International has 1 warning sign we think you should be aware of.

If you are like me, then you will not want to miss this free list of undervalued small caps that insiders are buying.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American 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.