Fastenal Company's (NASDAQ:FAST) price-to-earnings (or "P/E") ratio of 41.4x might make it look like a strong sell right now compared to the market in the United States, where around half of the companies have P/E ratios below 19x and even P/E's below 11x are quite common. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

Recent earnings growth for Fastenal has been in line with the market. One possibility is that the P/E is high because investors think this modest earnings performance will accelerate. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

What Are Growth Metrics Telling Us About The High P/E?

There's an inherent assumption that a company should far outperform the market for P/E ratios like Fastenal's to be considered reasonable.

If we review the last year of earnings, the company posted a result that saw barely any deviation from a year ago. However, a few strong years before that means that it was still able to grow EPS by an impressive 30% in total over the last three years. Accordingly, shareholders would have probably welcomed those medium-term rates of earnings growth.

Turning to the outlook, the next three years should generate growth of 8.3% per year as estimated by the analysts watching the company. With the market predicted to deliver 11% growth each year, the company is positioned for a weaker earnings result.

In light of this, it's alarming that Fastenal's P/E sits above the majority of other companies. It seems most investors are hoping for a turnaround in the company's business prospects, but the analyst cohort is not so confident this will happen. There's a good chance these shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the growth outlook.

The Key Takeaway

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

Our examination of Fastenal's analyst forecasts revealed that its inferior earnings outlook isn't impacting its high P/E anywhere near as much as we would have predicted. Right now we are increasingly uncomfortable with the high P/E as the predicted future earnings aren't likely to support such positive sentiment for long. This places shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

A lot of potential risks can sit within a company's balance sheet. Take a look at our free balance sheet analysis for Fastenal with six simple checks on some of these key factors.

If these risks are making you reconsider your opinion on Fastenal, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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.