Cubic Digital Technology Co.,Ltd. (SZSE:300344) shares have had a horrible month, losing 29% after a relatively good period beforehand. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 21% in that time.

Although its price has dipped substantially, Cubic Digital TechnologyLtd may still be sending strong sell signals at present with a price-to-sales (or "P/S") ratio of 10x, when you consider almost half of the companies in the Electronic industry in China have P/S ratios under 4.2x and even P/S lower than 2x aren't out of the ordinary. 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.

How Cubic Digital TechnologyLtd Has Been Performing

Recent times have been quite advantageous for Cubic Digital TechnologyLtd as its revenue has been rising very briskly. Perhaps the market is expecting future revenue performance to outperform the wider market, which has seemingly got people interested in the stock. However, if this isn't the case, investors might get caught out paying too much for the stock.

Do Revenue Forecasts Match The High P/S Ratio?

In order to justify its P/S ratio, Cubic Digital TechnologyLtd would need to produce outstanding growth that's well in excess of the industry.

Taking a look back first, we see that the company grew revenue by an impressive 99% last year. However, this wasn't enough as the latest three year period has seen the company endure a nasty 31% drop in revenue in aggregate. Accordingly, shareholders would have felt downbeat about the medium-term rates of revenue growth.

In contrast to the company, the rest of the industry is expected to grow by 26% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

With this information, we find it concerning that Cubic Digital TechnologyLtd is trading at a P/S higher than the industry. Apparently many investors in the company are way more bullish than recent times would indicate and aren't willing to let go of their stock at any price. 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 Final Word

A significant share price dive has done very little to deflate Cubic Digital TechnologyLtd's very lofty P/S. 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 Cubic Digital TechnologyLtd 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. Should recent medium-term revenue trends persist, it would pose a significant risk to existing shareholders' investments and prospective investors will have a hard time accepting the current value of the stock.

Before you settle on your opinion, we've discovered 1 warning sign for Cubic Digital TechnologyLtd that you should be aware of.

If these risks are making you reconsider your opinion on Cubic Digital TechnologyLtd, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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.