With a median price-to-sales (or "P/S") ratio of close to 1.5x in the Consumer Services industry in the United States, you could be forgiven for feeling indifferent about ADT Inc.'s (NYSE:ADT) P/S ratio of 1.3x. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

How ADT Has Been Performing

With revenue growth that's inferior to most other companies of late, ADT has been relatively sluggish. It might be that many expect the uninspiring revenue performance to strengthen positively, which has kept the P/S ratio from falling. If not, then existing shareholders may be a little nervous about the viability of the share price.

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

Do Revenue Forecasts Match The P/S Ratio?

In order to justify its P/S ratio, ADT would need to produce growth that's similar to the industry.

If we review the last year of revenue, the company posted a result that saw barely any deviation from a year ago. Whilst it's an improvement, it wasn't enough to get the company out of the hole it was in, with revenue down 6.4% overall from three years ago. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

Shifting to the future, estimates from the four analysts covering the company suggest revenue should grow by 0.7% over the next year. Meanwhile, the rest of the industry is forecast to expand by 15%, which is noticeably more attractive.

With this information, we find it interesting that ADT is trading at a fairly similar P/S compared to the industry. Apparently many investors in the company are less bearish than analysts indicate and aren't willing to let go of their stock right now. Maintaining these prices will be difficult to achieve as this level of revenue growth is likely to weigh down the shares eventually.

The Final Word

Using the price-to-sales 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.

When you consider that ADT's revenue growth estimates are fairly muted compared to the broader industry, it's easy to see why we consider it unexpected to be trading at its current P/S ratio. When we see companies with a relatively weaker revenue outlook compared to the industry, we suspect the share price is at risk of declining, sending the moderate P/S lower. This places shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

Before you take the next step, you should know about the 3 warning signs for ADT (1 is potentially serious!) that we have uncovered.

If these risks are making you reconsider your opinion on ADT, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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