The Macau E&M Holding Limited (HKG:1408) share price has fared very poorly over the last month, falling by a substantial 28%. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 33% in that time.

Even after such a large drop in price, you could still be forgiven for feeling indifferent about Macau E&M Holding's P/S ratio of 0.5x, since the median price-to-sales (or "P/S") ratio for the Construction industry in Hong Kong is also close to 0.3x. 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.

How Macau E&M Holding Has Been Performing

For example, consider that Macau E&M Holding's financial performance has been poor lately as its revenue has been in decline. 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.

What Are Revenue Growth Metrics Telling Us About The P/S?

There's an inherent assumption that a company should be matching the industry for P/S ratios like Macau E&M Holding's to be considered reasonable.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 5.3%. As a result, revenue from three years ago have also fallen 51% overall. 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 10% shows it's an unpleasant look.

With this in mind, we find it worrying that Macau E&M Holding'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. Only the boldest would assume these prices are sustainable as a continuation of recent revenue trends is likely to weigh on the share price eventually.

The Key Takeaway

Macau E&M Holding's plummeting stock price has brought its P/S back to a similar region as the rest of the industry. 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.

We find it unexpected that Macau E&M Holding trades at a P/S ratio that is comparable to the rest of the industry, despite experiencing declining revenues during the medium-term, while the industry as a whole is expected to grow. Even though it matches the industry, we're uncomfortable with the current P/S ratio, as this dismal revenue performance is unlikely to support a more positive sentiment for long. If recent medium-term revenue trends continue, it will place shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 2 warning signs with Macau E&M Holding, and understanding these should be part of your investment process.

If you're unsure about the strength of Macau E&M Holding'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.