There wouldn't be many who think Quest Diagnostics Incorporated's (NYSE:DGX) price-to-earnings (or "P/E") ratio of 18.6x is worth a mention when the median P/E in the United States is similar at about 17x. Although, it's not wise to simply ignore the P/E without explanation as investors may be disregarding a distinct opportunity or a costly mistake.

Recent times have been pleasing for Quest Diagnostics as its earnings have risen in spite of the market's earnings going into reverse. One possibility is that the P/E is moderate because investors think the company's earnings will be less resilient moving forward. If not, then existing shareholders have reason to be feeling optimistic about the future direction of the share price.

If you'd like to see what analysts are forecasting going forward, you should check out our free report on Quest Diagnostics.

How Is Quest Diagnostics' Growth Trending?

In order to justify its P/E ratio, Quest Diagnostics would need to produce growth that's similar to the market.

If we review the last year of earnings growth, the company posted a worthy increase of 9.1%. Ultimately though, it couldn't turn around the poor performance of the prior period, with EPS shrinking 43% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Looking ahead now, EPS is anticipated to climb by 9.6% per annum during the coming three years according to the analysts following the company. With the market predicted to deliver 10% growth each year, the company is positioned for a comparable earnings result.

With this information, we can see why Quest Diagnostics is trading at a fairly similar P/E to the market. Apparently shareholders are comfortable to simply hold on while the company is keeping a low profile.

The Final Word

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.

As we suspected, our examination of Quest Diagnostics' analyst forecasts revealed that its market-matching earnings outlook is contributing to its current P/E. At this stage investors feel the potential for an improvement or deterioration in earnings isn't great enough to justify a high or low P/E ratio. It's hard to see the share price moving strongly in either direction in the near future under these circumstances.

You should always think about risks. Case in point, we've spotted 1 warning sign for Quest Diagnostics you should be aware of.

Of course, you might also be able to find a better stock than Quest Diagnostics. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com