What DexCom, Inc.'s (NASDAQ:DXCM) P/E Is Not Telling You

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DexCom, Inc.'s (NASDAQ:DXCM) price-to-earnings (or "P/E") ratio of 76.5x 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 22x and even P/E's below 12x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

Recent times have been advantageous for DexCom as its earnings have been rising faster than most other companies. It seems that many are expecting the strong earnings performance to persist, which has raised the P/E. If not, then existing shareholders might be a little nervous about the viability of the share price.

Check out our latest analysis for DexCom

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

How Is DexCom's Growth Trending?

In order to justify its P/E ratio, DexCom would need to produce outstanding growth well in excess of the market.

If we review the last year of earnings growth, the company posted a terrific increase of 369%. Still, EPS has barely risen at all from three years ago in total, which is not ideal. So it appears to us that the company has had a mixed result in terms of growing earnings over that time.

Looking ahead now, EPS is anticipated to slump, contracting by 4.5% each year during the coming three years according to the analysts following the company. With the market predicted to deliver 15% growth per annum, that's a disappointing outcome.

With this information, we find it concerning that DexCom is trading at a P/E higher than the market. Apparently many investors in the company reject the analyst cohort's pessimism and aren't willing to let go of their stock at any price. Only the boldest would assume these prices are sustainable as these declining earnings are likely to weigh heavily on the share price eventually.

The Key Takeaway

It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

Our examination of DexCom's analyst forecasts revealed that its outlook for shrinking earnings isn't impacting its high P/E anywhere near as much as we would have predicted. When we see a poor outlook with earnings heading backwards, we suspect the share price is at risk of declining, sending the high P/E lower. This places shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

And what about other risks? Every company has them, and we've spotted 4 warning signs for DexCom (of which 1 makes us a bit uncomfortable!) you should know about.

Of course, you might also be able to find a better stock than DexCom. So you may wish to see this free collection of other companies that sit on P/E's below 20x and have grown earnings strongly.

This article by Simply Wall St is general in nature. 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.

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