Shang Hai Ya Tong Co.,Ltd. (SHSE:600692) shares have retraced a considerable 25% in the last month, reversing a fair amount of their solid recent performance. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 13% in that time.

Although its price has dipped substantially, it's still not a stretch to say that Shang Hai Ya TongLtd's price-to-sales (or "P/S") ratio of 1.7x right now seems quite "middle-of-the-road" compared to the Real Estate industry in China, where the median P/S ratio is around 1.6x. Although, it's not wise to simply ignore the P/S without explanation as investors may be disregarding a distinct opportunity or a costly mistake.

What Does Shang Hai Ya TongLtd's Recent Performance Look Like?

For instance, Shang Hai Ya TongLtd's receding revenue in recent times would have to be some food for thought. It might be that many expect the company to put the disappointing revenue performance behind them over the coming period, which has kept the P/S from falling. If not, then existing shareholders may be a little nervous about the viability of the share price.

How Is Shang Hai Ya TongLtd's Revenue Growth Trending?

Shang Hai Ya TongLtd's P/S ratio would be typical for a company that's only expected to deliver moderate growth, and importantly, perform in line with the industry.

Retrospectively, the last year delivered a frustrating 22% decrease to the company's top line. This means it has also seen a slide in revenue over the longer-term as revenue is down 25% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 12% shows it's an unpleasant look.

With this in mind, we find it worrying that Shang Hai Ya TongLtd's P/S exceeds that of its industry peers. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. There's a good chance existing shareholders are setting themselves up for future disappointment if the P/S falls to levels more in line with the recent negative growth rates.

What We Can Learn From Shang Hai Ya TongLtd's P/S?

Shang Hai Ya TongLtd's plummeting stock price has brought its P/S back to a similar region as the rest of the industry. Typically, we'd caution against reading too much into price-to-sales ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

Our look at Shang Hai Ya TongLtd revealed its shrinking revenues over the medium-term haven't impacted the P/S as much as we anticipated, given the industry is set to grow. When we see revenue heading backwards in the context of growing industry forecasts, it'd make sense to expect a possible share price decline on the horizon, sending the moderate P/S lower. If recent medium-term revenue trends continue, it will place shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

And what about other risks? Every company has them, and we've spotted 3 warning signs for Shang Hai Ya TongLtd (of which 2 don't sit too well with us!) you should know about.

Of course, profitable companies with a history of great earnings growth are generally safer bets. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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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.