The worst result, after buying shares in a company (assuming no leverage), would be if you lose all the money you put in. But on a lighter note, a good company can see its share price rise well over 100%. For instance, the price of Guangdong Topstar Technology Co., Ltd. (SZSE:300607) stock is up an impressive 124% over the last five years. Shareholders are also celebrating an even better 212% rise, over the last three months.

Since the stock has added CN¥4.3b to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

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. 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.

Guangdong Topstar Technology's earnings per share are down 40% per year, despite strong share price performance over five years.

This means it's unlikely the market is judging the company based on earnings growth. Because earnings per share don't seem to match up with the share price, we'll take a look at other metrics instead.

The modest 0.1% dividend yield is unlikely to be propping up the share price. On the other hand, Guangdong Topstar Technology's revenue is growing nicely, at a compound rate of 18% over the last five years. It's quite possible that management are prioritizing revenue growth over EPS growth at the moment.

The company's revenue and earnings (over time) are depicted in the image below (click to see the exact numbers).

It's probably worth noting that the CEO is paid less than the median at similar sized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. So we recommend checking out this free report showing consensus forecasts

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 incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. We note that for Guangdong Topstar Technology the TSR over the last 5 years was 130%, 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

It's good to see that Guangdong Topstar Technology has rewarded shareholders with a total shareholder return of 93% in the last twelve months. And that does include the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 18% per year), it would seem that the stock's performance has improved in recent times. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. It's always interesting to track share price performance over the longer term. But to understand Guangdong Topstar Technology better, we need to consider many other factors. Case in point: We've spotted 2 warning signs for Guangdong Topstar Technology you should be aware of, and 1 of them is significant.

For those who like to find winning investments this free list of undervalued companies with recent insider purchasing, could be just the ticket.

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.