Some Atkore Inc. (NYSE:ATKR) shareholders are probably rather concerned to see the share price fall 39% over the last three months. But that scarcely detracts from the really solid long term returns generated by the company over five years. We think most investors would be happy with the 137% return, over that period. To some, the recent pullback wouldn't be surprising after such a fast rise. The more important question is whether the stock is too cheap or too expensive today.

While this past week has detracted from the company's five-year return, let's look at the recent trends of the underlying business and see if the gains have been in alignment.

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.

Over half a decade, Atkore managed to grow its earnings per share at 41% a year. This EPS growth is higher than the 19% average annual increase in the share price. So it seems the market isn't so enthusiastic about the stock these days. This cautious sentiment is reflected in its (fairly low) P/E ratio of 5.76.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

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

A Different Perspective

Investors in Atkore had a tough year, with a total loss of 30% (including dividends), against a market gain of about 43%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Longer term investors wouldn't be so upset, since they would have made 19%, each year, over five years. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. 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. Case in point: We've spotted 2 warning signs for Atkore you should be aware of, and 1 of them shouldn't be ignored.

But note: Atkore may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

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.