Directel Holdings Limited (HKG:8337) shares have had a really impressive month, gaining 52% after a shaky period beforehand. Taking a wider view, although not as strong as the last month, the full year gain of 13% is also fairly reasonable.

Although its price has surged higher, given about half the companies operating in Hong Kong's Wireless Telecom industry have price-to-sales ratios (or "P/S") above 1x, you may still consider Directel Holdings as an attractive investment with its 0.2x P/S ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/S.

What Does Directel Holdings' Recent Performance Look Like?

As an illustration, revenue has deteriorated at Directel Holdings over the last year, which is not ideal at all. It might be that many expect the disappointing revenue performance to continue or accelerate, which has repressed the P/S. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Is There Any Revenue Growth Forecasted For Directel Holdings?

The only time you'd be truly comfortable seeing a P/S as low as Directel Holdings' is when the company's growth is on track to lag the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 4.6%. The last three years don't look nice either as the company has shrunk revenue by 38% in aggregate. 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 7.2% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

With this in mind, we understand why Directel Holdings' P/S is lower than most of its industry peers. Nonetheless, there's no guarantee the P/S has reached a floor yet with revenue going in reverse. There's potential for the P/S to fall to even lower levels if the company doesn't improve its top-line growth.

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

Directel Holdings' stock price has surged recently, but its but its P/S still remains modest. 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.

It's no surprise that Directel Holdings maintains its low P/S off the back of its sliding revenue over the medium-term. At this stage investors feel the potential for an improvement in revenue isn't great enough to justify a higher P/S ratio. Given the current circumstances, it seems unlikely that the share price will experience any significant movement in either direction in the near future if recent medium-term revenue trends persist.

And what about other risks? Every company has them, and we've spotted 2 warning signs for Directel Holdings you should know about.

It's important to make sure you look for a great company, not just the first idea you come across. So if growing profitability aligns with your idea of a great company, take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

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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.