With a price-to-earnings (or "P/E") ratio of 23.4x Dycom Industries, Inc. (NYSE:DY) may be sending bearish signals at the moment, given that almost half of all companies in the United States have P/E ratios under 19x and even P/E's lower than 11x are not unusual. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's as high as it is.

Dycom Industries' earnings growth of late has been pretty similar to most other companies. It might be that many expect the mediocre earnings performance to strengthen positively, which has kept the P/E from falling. If not, then existing shareholders may be a little nervous about the viability of the share price.

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

In order to justify its P/E ratio, Dycom Industries would need to produce impressive growth in excess of the market.

Retrospectively, the last year delivered a decent 2.8% gain to the company's bottom line. The latest three year period has also seen an excellent 441% overall rise in EPS, aided somewhat by its short-term performance. So we can start by confirming that the company has done a great job of growing earnings over that time.

Shifting to the future, estimates from the eight analysts covering the company suggest earnings should grow by 18% each year over the next three years. With the market only predicted to deliver 11% each year, the company is positioned for a stronger earnings result.

In light of this, it's understandable that Dycom Industries' P/E sits above the majority of other companies. Apparently shareholders aren't keen to offload something that is potentially eyeing a more prosperous future.

The Final Word

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

We've established that Dycom Industries maintains its high P/E on the strength of its forecast growth being higher than the wider market, as expected. At this stage investors feel the potential for a deterioration in earnings isn't great enough to justify a lower P/E ratio. It's hard to see the share price falling strongly in the near future under these circumstances.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 1 warning sign with Dycom Industries, and understanding should be part of your investment process.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.