Dropbox, Inc.'s (NASDAQ:DBX) price-to-earnings (or "P/E") ratio of 14.8x might make it look like a buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 18x and even P/E's above 33x are quite common. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

Dropbox certainly has been doing a good job lately as its earnings growth has been positive while most other companies have been seeing their earnings go backwards. It might be that many expect the strong earnings performance to degrade substantially, possibly more than the market, which has repressed the P/E. 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 out of favour.

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

The only time you'd be truly comfortable seeing a P/E as low as Dropbox's is when the company's growth is on track to lag the market.

Retrospectively, the last year delivered virtually the same number to the company's bottom line as the year before. Likewise, not much has changed from three years ago as earnings have been stuck during that whole time. Therefore, it's fair to say that earnings growth has definitely eluded the company recently.

Looking ahead now, EPS is anticipated to climb by 1.8% each year during the coming three years according to the eleven analysts following the company. That's shaping up to be materially lower than the 10% each year growth forecast for the broader market.

In light of this, it's understandable that Dropbox's P/E sits below the majority of other companies. Apparently many shareholders weren't comfortable holding on while the company is potentially eyeing a less prosperous future.

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.

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

You need to take note of risks, for example - Dropbox has 3 warning signs (and 1 which is concerning) we think you should know about.

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.

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