To the annoyance of some shareholders, GRP Limited (SGX:BLU) shares are down a considerable 27% in the last month, which continues a horrid run for the company. Longer-term shareholders will rue the drop in the share price, since it's now virtually flat for the year after a promising few quarters.

Although its price has dipped substantially, you could still be forgiven for feeling indifferent about GRP's P/S ratio of 0.4x, since the median price-to-sales (or "P/S") ratio for the Electronic industry in Singapore is also close to 0.3x. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

View our latest analysis for GRP

How GRP Has Been Performing

GRP has been doing a good job lately as it's been growing revenue at a solid pace. One possibility is that the P/S is moderate because investors think this respectable revenue growth might not be enough to outperform the broader industry in the near future. If that doesn't eventuate, then existing shareholders probably aren't too pessimistic about the future direction 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 GRP's to be considered reasonable.

Retrospectively, the last year delivered an exceptional 18% gain to the company's top line. The strong recent performance means it was also able to grow revenue by 58% in total over the last three years. Therefore, it's fair to say the revenue growth recently has been superb for the company.

This is in contrast to the rest of the industry, which is expected to grow by 33% over the next year, materially higher than the company's recent medium-term annualised growth rates.

With this information, we find it interesting that GRP is trading at a fairly similar P/S compared to the industry. It seems most investors are ignoring the fairly limited recent growth rates and are willing to pay up for exposure to the stock. They may be setting themselves up for future disappointment if the P/S falls to levels more in line with recent growth rates.

The Bottom Line On GRP's P/S

With its share price dropping off a cliff, the P/S for GRP looks to be in line with the rest of the Electronic industry. Typically, we'd caution against reading too much into price-to-sales ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

Our examination of GRP revealed its poor three-year revenue trends aren't resulting in a lower P/S as per our expectations, given they look worse than current industry outlook. When we see weak revenue with slower than industry growth, we suspect the share price is at risk of declining, bringing the P/S back in line with expectations. Unless there is a significant improvement in the company's medium-term performance, it will be difficult to prevent the P/S ratio from declining to a more reasonable level.

It is also worth noting that we have found 3 warning signs for GRP that you need to take into consideration.

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.