Shanghai Guao Electronic Technology Co., Ltd. (SZSE:300551) shareholders that were waiting for something to happen have been dealt a blow with a 25% share price drop in the last month. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 36% in that time.

In spite of the heavy fall in price, you could still be forgiven for thinking Shanghai Guao Electronic Technology is a stock to steer clear of with a price-to-sales ratios (or "P/S") of 6.7x, considering almost half the companies in China's Tech industry have P/S ratios below 3.2x. 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 Shanghai Guao Electronic Technology Has Been Performing

With revenue growth that's exceedingly strong of late, Shanghai Guao Electronic Technology has been doing very well. It seems that many are expecting the strong revenue performance to beat most other companies over the coming period, which has increased investors' willingness to pay up for 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?

The only time you'd be truly comfortable seeing a P/S as steep as Shanghai Guao Electronic Technology's is when the company's growth is on track to outshine the industry decidedly.

Retrospectively, the last year delivered an exceptional 53% gain to the company's top line. The latest three year period has also seen an excellent 60% overall rise in revenue, aided by its short-term performance. So we can start by confirming that the company has done a great job of growing revenue over that time.

This is in contrast to the rest of the industry, which is expected to grow by 25% over the next year, materially higher than the company's recent medium-term annualised growth rates.

In light of this, it's alarming that Shanghai Guao Electronic Technology's P/S sits above the majority of other companies. 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 Key Takeaway

Even after such a strong price drop, Shanghai Guao Electronic Technology's P/S still exceeds the industry median significantly. 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.

The fact that Shanghai Guao Electronic Technology currently trades on a higher P/S relative to the industry is an oddity, since its recent three-year growth is lower than the wider industry forecast. When we observe slower-than-industry revenue growth alongside a high P/S ratio, we assume there to be a significant risk of the share price decreasing, which would result in a lower P/S ratio. 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.

Before you take the next step, you should know about the 2 warning signs for Shanghai Guao Electronic Technology that we have uncovered.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.
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.