It hasn't been the best quarter for Charles River Laboratories International, Inc. (NYSE:CRL) shareholders, since the share price has fallen 17% in that time. But at least the stock is up over the last five years. Unfortunately its return of 68% is below the market return of 97%. While the returns over the last 5 years have been good, we do feel sorry for those shareholders who haven't held shares that long, because the share price is down 38% in the last three years.

The past week has proven to be lucrative for Charles River Laboratories International investors, so let's see if fundamentals drove the company's five-year performance.

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.

During five years of share price growth, Charles River Laboratories International achieved compound earnings per share (EPS) growth of 13% per year. This EPS growth is reasonably close to the 11% average annual increase in the share price. That suggests that the market sentiment around the company hasn't changed much over that time. Indeed, it would appear the share price is reacting to the EPS.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

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. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

Charles River Laboratories International shareholders are up 9.1% for the year. But that was short of the market average. If we look back over five years, the returns are even better, coming in at 11% per year for five years. It's quite possible the business continues to execute with prowess, even as the share price gains are slowing. 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. To that end, you should be aware of the 1 warning sign we've spotted with Charles River Laboratories International .

Charles River Laboratories International 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 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.