SEM Holdings Limited (HKG:9929) shares have had a really impressive month, gaining 26% after a shaky period beforehand. Looking further back, the 12% rise over the last twelve months isn't too bad notwithstanding the strength over the last 30 days.

In spite of the firm bounce in price, you could still be forgiven for feeling indifferent about SEM Holdings' P/S ratio of 0.7x, 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 SEM Holdings' Recent Performance Look Like?

As an illustration, revenue has deteriorated at SEM Holdings over the last year, which is not ideal at all. Perhaps investors believe the recent revenue performance is enough to keep in line with the industry, which is keeping the P/S from dropping off. 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.

Do Revenue Forecasts Match The P/S Ratio?

There's an inherent assumption that a company should be matching the industry for P/S ratios like SEM Holdings' to be considered reasonable.

Retrospectively, the last year delivered a frustrating 38% decrease to the company's top line. Still, the latest three year period has seen an excellent 85% overall rise in revenue, in spite of its unsatisfying short-term performance. So we can start by confirming that the company has generally done a very good job of growing revenue over that time, even though it had some hiccups along the way.

When compared to the industry's one-year growth forecast of 9.9%, the most recent medium-term revenue trajectory is noticeably more alluring

With this information, we find it interesting that SEM Holdings is trading at a fairly similar P/S compared to the industry. It may be that most investors are not convinced the company can maintain its recent growth rates.

What We Can Learn From SEM Holdings' P/S?

SEM Holdings appears to be back in favour with a solid price jump bringing its P/S back in line with other companies in the industry Using the price-to-sales ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

We've established that SEM Holdings currently trades on a lower than expected P/S since its recent three-year growth is higher than the wider industry forecast. When we see strong revenue with faster-than-industry growth, we can only assume potential risks are what might be placing pressure on the P/S ratio. It appears some are indeed anticipating revenue instability, because the persistence of these recent medium-term conditions would normally provide a boost to the share price.

Don't forget that there may be other risks. For instance, we've identified 3 warning signs for SEM Holdings (1 shouldn't be ignored) you should be aware of.

If strong companies turning a profit tickle your fancy, then you'll want to check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.