The Williams-Sonoma, Inc. (NYSE:WSM) share price has done very well over the last month, posting an excellent gain of 28%. The last 30 days bring the annual gain to a very sharp 87%.

Even after such a large jump in price, you could still be forgiven for feeling indifferent about Williams-Sonoma's P/E ratio of 19.3x, since the median price-to-earnings (or "P/E") ratio in the United States is also close to 19x. However, investors might be overlooking a clear opportunity or potential setback if there is no rational basis for the P/E.

With earnings growth that's superior to most other companies of late, Williams-Sonoma has been doing relatively well. It might be that many expect the strong earnings performance to wane, which has kept the P/E from rising. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's not quite in favour.

Want the full picture on analyst estimates for the company? Then our free report on Williams-Sonoma will help you uncover what's on the horizon.

Is There Some Growth For Williams-Sonoma?

There's an inherent assumption that a company should be matching the market for P/E ratios like Williams-Sonoma's to be considered reasonable.

Taking a look back first, we see that the company grew earnings per share by an impressive 18% last year. As a result, it also grew EPS by 30% in total over the last three years. Therefore, it's fair to say the earnings growth recently has been respectable for the company.

Turning to the outlook, the next three years should generate growth of 5.3% per year as estimated by the analysts watching the company. Meanwhile, the rest of the market is forecast to expand by 11% each year, which is noticeably more attractive.

In light of this, it's curious that Williams-Sonoma's P/E sits in line with the majority of other companies. It seems most investors are ignoring the fairly limited growth expectations and are willing to pay up for exposure to the stock. Maintaining these prices will be difficult to achieve as this level of earnings growth is likely to weigh down the shares eventually.

The Key Takeaway

Williams-Sonoma's stock has a lot of momentum behind it lately, which has brought its P/E level with the market. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

We've established that Williams-Sonoma currently trades on a higher than expected P/E since its forecast growth is lower than the wider market. When we see a weak earnings outlook with slower than market growth, we suspect the share price is at risk of declining, sending the moderate P/E lower. This places shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

It is also worth noting that we have found 1 warning sign for Williams-Sonoma that you need to take into consideration.

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.

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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.