When you buy shares in a company, it's worth keeping in mind the possibility that it could fail, and you could lose your money. But when you pick a company that is really flourishing, you can make more than 100%. For instance, the price of The Simply Good Foods Company (NASDAQ:SMPL) stock is up an impressive 107% over the last five years. On top of that, the share price is up 23% in about a quarter.

Since the stock has added US$136m to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

View our latest analysis for Simply Good Foods

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 five years of share price growth, Simply Good Foods achieved compound earnings per share (EPS) growth of 20% per year. The EPS growth is more impressive than the yearly share price gain of 16% over the same period. So it seems the market isn't so enthusiastic about the stock these days.

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

We consider it positive that insiders have made significant purchases in the last year. Having said that, most people consider earnings and revenue growth trends to be a more meaningful guide to the business. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

Simply Good Foods provided a TSR of 5.1% over the last twelve months. Unfortunately this falls short of the market return. On the bright side, the longer term returns (running at about 16% a year, over half a decade) look better. It's quite possible the business continues to execute with prowess, even as the share price gains are slowing. Investors who like to make money usually check up on insider purchases, such as the price paid, and total amount bought. You can find out about the insider purchases of Simply Good Foods by clicking this link.

Simply Good Foods is not the only stock that insiders are buying. For those who like to find winning investments 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 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.