IAMGOLD's (TSE:IMG) investors will be pleased with their impressive 169% return over the last three years

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 if you buy shares in a really great company, you can more than double your money. For example, the IAMGOLD Corporation (TSE:IMG) share price has soared 169% in the last three years. Most would be happy with that. Also pleasing for shareholders was the 47% gain in the last three months.

Let's take a look at the underlying fundamentals over the longer term, and see if they've been consistent with shareholders returns.

Check out our latest analysis for IAMGOLD

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 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.

IAMGOLD was able to grow its EPS at 20% per year over three years, sending the share price higher. This EPS growth is lower than the 39% average annual increase in the share price. This suggests that, as the business progressed over the last few years, it gained the confidence of market participants. It is quite common to see investors become enamoured with a business, after a few years of solid progress.

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

We consider it positive that insiders have made significant purchases in the last year. Even so, future earnings will be far more important to whether current shareholders make money. Dive deeper into the earnings by checking this interactive graph of IAMGOLD's earnings, revenue and cash flow.

A Different Perspective

We're pleased to report that IAMGOLD shareholders have received a total shareholder return of 146% over one year. Since the one-year TSR is better than the five-year TSR (the latter coming in at 9% 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. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. Like risks, for instance. Every company has them, and we've spotted 2 warning signs for IAMGOLD (of which 1 is a bit concerning!) you should know about.

IAMGOLD is not the only stock that insiders are buying. For those who like to find lesser know companies this free list of growing 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 Canadian 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.