Wing Fung Group Asia Limited (HKG:8526) shares have had a horrible month, losing 49% after a relatively good period beforehand. For any long-term shareholders, the last month ends a year to forget by locking in a 54% share price decline.

Even after such a large drop in price, you could still be forgiven for feeling indifferent about Wing Fung Group Asia's P/S ratio of 0.1x, 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.

What Does Wing Fung Group Asia's Recent Performance Look Like?

As an illustration, revenue has deteriorated at Wing Fung Group Asia over the last year, which is not ideal at all. One possibility is that the P/S is moderate because investors think the company might still do enough to be in line with the broader industry in the near future. If you like the company, you'd at least be hoping this is the case so that you could potentially pick up some stock while it's not quite in favour.

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

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

Retrospectively, the last year delivered a frustrating 38% decrease to the company's top line. As a result, revenue from three years ago have also fallen 48% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

In contrast to the company, the rest of the industry is expected to grow by 11% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

In light of this, it's somewhat alarming that Wing Fung Group Asia's P/S sits in line with the majority of other companies. Apparently many investors in the company are way less bearish than recent times would indicate and aren't willing to let go of their stock right now. 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 Bottom Line On Wing Fung Group Asia's P/S

Wing Fung Group Asia's plummeting stock price has brought its P/S back to a similar region as the rest of the industry. Generally, our preference is to limit the use of the price-to-sales ratio to establishing what the market thinks about the overall health of a company.

The fact that Wing Fung Group Asia currently trades at a P/S on par with the rest of the industry is surprising to us since its recent revenues have been in decline over the medium-term, all while the industry is set 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. Unless the recent medium-term conditions improve markedly, investors will have a hard time accepting the share price as fair value.

Don't forget that there may be other risks. For instance, we've identified 3 warning signs for Wing Fung Group Asia that you should be aware of.

If you're unsure about the strength of Wing Fung Group Asia'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.