It might seem bad, but the worst that can happen when you buy a stock (without leverage) is that its share price goes to zero. But when you pick a company that is really flourishing, you can make more than 100%. For example, the Kenmare Resources plc (LON:KMR) share price has soared 118% in the last three years. That sort of return is as solid as granite.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

Check out our latest analysis for Kenmare Resources

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. One flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

Kenmare Resources was able to grow its EPS at 18% per year over three years, sending the share price higher. This EPS growth is lower than the 30% average annual increase in the share price. So it's fair to assume the market has a higher opinion of the business than it did three years ago. It's not unusual to see the market 're-rate' a stock, after a few years of growth.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

We like that insiders have been buying shares in the last twelve months. Having said that, most people consider earnings and revenue growth trends to be a more meaningful guide to the business. This free interactive report on Kenmare Resources' earnings, revenue and cash flow 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. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. We note that for Kenmare Resources the TSR over the last 3 years was 133%, 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 nice to see that Kenmare Resources shareholders have received a total shareholder return of 11% over the last year. That's including the dividend. That's better than the annualised return of 11% 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 2 warning signs we've spotted with Kenmare Resources (including 1 which is a bit concerning) .

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: insiders have been buying them).

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