Despite an already strong run, Willdan Group, Inc. (NASDAQ:WLDN) shares have been powering on, with a gain of 29% in the last thirty days. The last month tops off a massive increase of 253% in the last year.

After such a large jump in price, Willdan Group may be sending very bearish signals at the moment with a price-to-earnings (or "P/E") ratio of 47.6x, since 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 so lofty.

Recent times have been advantageous for Willdan Group as its earnings have been rising faster than most other companies. The P/E is probably high because investors think this strong earnings performance will continue. If not, then existing shareholders might be a little nervous about the viability of the share price.

Keen to find out how analysts think Willdan Group's future stacks up against the industry? In that case, our free report is a great place to start.

Does Growth Match The High P/E?

The only time you'd be truly comfortable seeing a P/E as steep as Willdan Group's is when the company's growth is on track to outshine the market decidedly.

If we review the last year of earnings growth, the company posted a terrific increase of 74%. Still, EPS has barely risen at all from three years ago in total, which is not ideal. Therefore, it's fair to say that earnings growth has been inconsistent recently for the company.

Looking ahead now, EPS is anticipated to climb by 11% during the coming year according to the dual analysts following the company. That's shaping up to be materially lower than the 16% growth forecast for the broader market.

With this information, we find it concerning that Willdan Group is trading at a P/E higher than the market. Apparently many investors in the company are way more bullish than analysts indicate and aren't willing to let go of their stock at any price. 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 Bottom Line On Willdan Group's P/E

Shares in Willdan Group have built up some good momentum lately, which has really inflated its P/E. While the price-to-earnings ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of earnings expectations.

We've established that Willdan Group currently trades on a much higher than expected P/E since its forecast growth is lower than the wider market. 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. You can assess many of the main risks through our free balance sheet analysis for Willdan Group with six simple checks.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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.