Planet Fitness, Inc.'s (NYSE:PLNT) price-to-earnings (or "P/E") ratio of 38.6x 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 16x and even P/E's below 9x are quite common. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

Planet Fitness 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. The P/E is probably high because investors think the company will continue to navigate the broader market headwinds better than most. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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

Is There Enough Growth For Planet Fitness?

Planet Fitness' P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Taking a look back first, we see that the company grew earnings per share by an impressive 38% last year. 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 19% per year during the coming three years according to the analysts following the company. Meanwhile, the rest of the market is forecast to only expand by 10% each year, which is noticeably less attractive.

With this information, we can see why Planet Fitness is trading at such a high P/E compared to the market. It seems most investors are expecting this strong future growth and are willing to pay more for the stock.

The Key Takeaway

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of Planet Fitness' analyst forecasts revealed that its superior earnings outlook is contributing to its high P/E. At this stage investors feel the potential for a deterioration in earnings isn't great enough to justify a lower P/E ratio. Unless these conditions change, they will continue to provide strong support to the share price.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 2 warning signs with Planet Fitness, and understanding them should be part of your investment process.

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.