NL Industries, Inc.'s (NYSE:NL) price-to-sales (or "P/S") ratio of 1.9x may not look like an appealing investment opportunity when you consider close to half the companies in the Commercial Services industry in the United States have P/S ratios below 1.2x. However, the P/S might be high for a reason and it requires further investigation to determine if it's justified.

What Does NL Industries' Recent Performance Look Like?

For example, consider that NL Industries' financial performance has been poor lately as its revenue has been in decline. It might be that many expect the company to still outplay most other companies over the coming period, which has kept the P/S from collapsing. If not, then existing shareholders may be quite nervous about the viability of the share price.

Want the full picture on earnings, revenue and cash flow for the company? Then our free report on NL Industries will help you shine a light on its historical performance.

Do Revenue Forecasts Match The High P/S Ratio?

There's an inherent assumption that a company should outperform the industry for P/S ratios like NL Industries' to be considered reasonable.

Taking a look back first, the company's revenue growth last year wasn't something to get excited about as it posted a disappointing decline of 3.2%. However, a few very strong years before that means that it was still able to grow revenue by an impressive 41% in total over the last three years. Although it's been a bumpy ride, it's still fair to say the revenue growth recently has been more than adequate for the company.

Comparing that recent medium-term revenue trajectory with the industry's one-year growth forecast of 8.7% shows it's noticeably more attractive.

With this information, we can see why NL Industries is trading at such a high P/S compared to the industry. Presumably shareholders aren't keen to offload something they believe will continue to outmanoeuvre the wider industry.

The Final Word

We'd say the price-to-sales ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

It's no surprise that NL Industries can support its high P/S given the strong revenue growth its experienced over the last three-year is superior to the current industry outlook. At this stage investors feel the potential continued revenue growth in the future is great enough to warrant an inflated P/S. Barring any significant changes to the company's ability to make money, the share price should continue to be propped up.

And what about other risks? Every company has them, and we've spotted 1 warning sign for NL Industries you should know about.

If these risks are making you reconsider your opinion on NL Industries, 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.