Despite an already strong run, Shanghai Broadband Technology Co.,Ltd (SHSE:600608) shares have been powering on, with a gain of 28% in the last thirty days. Unfortunately, the gains of the last month did little to right the losses of the last year with the stock still down 15% over that time.

After such a large jump in price, given around half the companies in China's Metals and Mining industry have price-to-sales ratios (or "P/S") below 1.5x, you may consider Shanghai Broadband TechnologyLtd as a stock to avoid entirely with its 5.3x P/S ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/S.

What Does Shanghai Broadband TechnologyLtd's P/S Mean For Shareholders?

For instance, Shanghai Broadband TechnologyLtd's receding revenue in recent times would have to be some food for thought. One possibility is that the P/S is high because investors think the company will still do enough to outperform the broader industry in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

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

Shanghai Broadband TechnologyLtd's P/S ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the industry.

Taking a look back first, the company's revenue growth last year wasn't something to get excited about as it posted a disappointing decline of 5.1%. This means it has also seen a slide in revenue over the longer-term as revenue is down 55% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenue over that time.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 15% shows it's an unpleasant look.

With this information, we find it concerning that Shanghai Broadband 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. There's a very good chance existing shareholders are setting themselves up for future disappointment if the P/S falls to levels more in line with the recent negative growth rates.

What We Can Learn From Shanghai Broadband TechnologyLtd's P/S?

Shanghai Broadband TechnologyLtd's P/S has grown nicely over the last month thanks to a handy boost in the share price. 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 Shanghai Broadband TechnologyLtd revealed its shrinking revenue over the medium-term isn't resulting in a P/S as low as we expected, given the industry is set to grow. Right now we aren't comfortable with the high P/S as this revenue performance is highly unlikely to support such positive sentiment for long. Unless the the circumstances surrounding the recent medium-term improve, it wouldn't be wrong to expect a a difficult period ahead for the company's shareholders.

There are also other vital risk factors to consider before investing and we've discovered 1 warning sign for Shanghai Broadband TechnologyLtd that you should be aware of.

If strong companies turning a profit tickle your fancy, then you'll want to check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.