CT Vision S.L. (International) Holdings Limited (HKG:994) shares have retraced a considerable 29% in the last month, reversing a fair amount of their solid recent performance. For any long-term shareholders, the last month ends a year to forget by locking in a 57% share price decline.

Even after such a large drop in price, it's still not a stretch to say that CT Vision S.L. (International) Holdings' price-to-sales (or "P/S") ratio of 0.4x right now seems quite "middle-of-the-road" compared to the Construction industry in Hong Kong, where the median P/S ratio is around 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.

How Has CT Vision S.L. (International) Holdings Performed Recently?

For example, consider that CT Vision S.L. (International) Holdings' financial performance has been pretty ordinary lately as revenue growth is non-existent. One possibility is that the P/S is moderate because investors think this benign revenue growth rate might not be enough to outperform the broader industry in the near future. Those who are bullish on CT Vision S.L. (International) Holdings will be hoping that this isn't the case, so that they can pick up the stock at a lower valuation.

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

In order to justify its P/S ratio, CT Vision S.L. (International) Holdings would need to produce growth that's similar to the industry.

Taking a look back first, we see that there was hardly any revenue growth to speak of for the company over the past year. Still, the latest three year period was better as it's delivered a decent 7.8% overall rise in revenue. Accordingly, shareholders probably wouldn't have been overly satisfied with the unstable medium-term growth rates.

Comparing the recent medium-term revenue trends against the industry's one-year growth forecast of 9.4% shows it's noticeably less attractive.

With this information, we find it interesting that CT Vision S.L. (International) Holdings is trading at a fairly similar P/S compared to the industry. Apparently many investors in the company are less bearish than recent times would indicate and aren't willing to let go of their stock right now. They may be setting themselves up for future disappointment if the P/S falls to levels more in line with recent growth rates.

What We Can Learn From CT Vision S.L. (International) Holdings' P/S?

CT Vision S.L. (International) Holdings' plummeting stock price has brought its P/S back to a similar region as the rest of 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.

Our examination of CT Vision S.L. (International) Holdings 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 the recent medium-term conditions improve, it's hard to accept the current share price as fair value.

Before you settle on your opinion, we've discovered 3 warning signs for CT Vision S.L. (International) Holdings (1 is potentially serious!) that you should be aware of.

Of course, profitable companies with a history of great earnings growth are generally safer bets. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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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.