WLS Holdings Limited (HKG:8021) shareholders would be excited to see that the share price has had a great month, posting a 30% gain and recovering from prior weakness. Unfortunately, the gains of the last month did little to right the losses of the last year with the stock still down 42% over that time.

Following the firm bounce in price, given around half the companies in Hong Kong's Construction industry have price-to-sales ratios (or "P/S") below 0.3x, you may consider WLS Holdings as a stock to avoid entirely with its 4.5x P/S ratio. Although, it's not wise to just take the P/S at face value as there may be an explanation why it's so lofty.

What Does WLS Holdings' P/S Mean For Shareholders?

As an illustration, revenue has deteriorated at WLS Holdings over the last year, which is not ideal at all. Perhaps the market believes the company can do enough to outperform the rest of the industry in the near future, which is keeping the P/S ratio high. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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

WLS Holdings' P/S ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 44%. As a result, revenue from three years ago have also fallen 45% overall. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

In contrast to the company, the rest of the industry is expected to grow by 10% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

With this in mind, we find it worrying that WLS Holdings' 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 heavily on the share price eventually.

The Bottom Line On WLS Holdings' P/S

Shares in WLS Holdings have seen a strong upwards swing lately, which has really helped boost its P/S figure. It's argued the price-to-sales ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

We've established that WLS Holdings currently trades on a much higher than expected P/S since its recent revenues have been in decline over the medium-term. When we see revenue heading backwards and underperforming the industry forecasts, we feel the possibility of the share price declining is very real, bringing the P/S back into the realm of reasonability. Unless the the circumstances surrounding the recent medium-term improve, it wouldn't be wrong to expect a a difficult period ahead for the company's shareholders.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 3 warning signs with WLS Holdings (at least 1 which is potentially serious), and understanding them should be part of your investment process.

If companies with solid past earnings growth is up your alley, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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