Sunlands Technology Group (NYSE:STG) shares have continued their recent momentum with a 26% gain in the last month alone. Taking a wider view, although not as strong as the last month, the full year gain of 17% is also fairly reasonable.

Although its price has surged higher, given about half the companies operating in the United States' Consumer Services industry have price-to-sales ratios (or "P/S") above 1.4x, you may still consider Sunlands Technology Group as an attractive investment with its 0.5x P/S ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/S.

What Does Sunlands Technology Group's Recent Performance Look Like?

As an illustration, revenue has deteriorated at Sunlands Technology Group over the last year, which is not ideal at all. It might be that many expect the disappointing revenue performance to continue or accelerate, which has repressed the P/S. Those who are bullish on Sunlands Technology Group will be hoping that this isn't the case so that they can pick up the stock at a lower valuation.

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

Do Revenue Forecasts Match The Low P/S Ratio?

In order to justify its P/S ratio, Sunlands Technology Group would need to produce sluggish growth that's trailing the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 5.9%. This has erased any of its gains during the last three years, with practically no change in revenue being achieved in total. Therefore, it's fair to say that revenue growth has been inconsistent recently for the company.

Comparing that to the industry, which is predicted to deliver 16% growth in the next 12 months, the company's momentum is weaker, based on recent medium-term annualised revenue results.

With this information, we can see why Sunlands Technology Group is trading at a P/S lower than the industry. Apparently many shareholders weren't comfortable holding on to something they believe will continue to trail the wider industry.

What We Can Learn From Sunlands Technology Group's P/S?

Sunlands Technology Group's stock price has surged recently, but its but its P/S still remains modest. While the price-to-sales ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of revenue expectations.

In line with expectations, Sunlands Technology Group maintains its low P/S on the weakness of its recent three-year growth being lower than the wider industry forecast. At this stage investors feel the potential for an improvement in revenue isn't great enough to justify a higher P/S ratio. Unless the recent medium-term conditions improve, they will continue to form a barrier for the share price around these levels.

It is also worth noting that we have found 1 warning sign for Sunlands Technology Group that you need to take into consideration.

If you're unsure about the strength of Sunlands Technology Group's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.