SEC Electric Machinery Co., Ltd. (SHSE:603988) shares have had a really impressive month, gaining 28% after a shaky period beforehand. But the gains over the last month weren't enough to make shareholders whole, as the share price is still down 4.6% in the last twelve months.

Following the firm bounce in price, when almost half of the companies in China's Electrical industry have price-to-sales ratios (or "P/S") below 2x, you may consider SEC Electric Machinery as a stock probably not worth researching with its 3.4x P/S ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the elevated P/S.

What Does SEC Electric Machinery's P/S Mean For Shareholders?

For instance, SEC Electric Machinery's receding revenue in recent times would have to be some food for thought. Perhaps the market believes the company can do enough to outperform the rest of the industry in the near future, which is keeping the P/S ratio high. However, if this isn't the case, investors might get caught out paying too much for the stock.

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

The only time you'd be truly comfortable seeing a P/S as high as SEC Electric Machinery's is when the company's growth is on track to outshine the industry.

Retrospectively, the last year delivered a frustrating 19% decrease to the company's top line. This means it has also seen a slide in revenue over the longer-term as revenue is down 22% in total over the last three years. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

In contrast to the company, the rest of the industry is expected to grow by 25% over the next year, which really puts the company's recent medium-term revenue decline into perspective.

In light of this, it's alarming that SEC Electric Machinery'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. 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.

The Key Takeaway

SEC Electric Machinery's P/S is on the rise since its shares have risen strongly. While the price-to-sales ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of revenue expectations.

We've established that SEC Electric Machinery currently trades on a much higher than expected P/S since its recent revenues have been in decline over the medium-term. With a revenue decline on investors' minds, the likelihood of a souring sentiment is quite high which could send the P/S back in line with what we'd expect. 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.

Before you settle on your opinion, we've discovered 3 warning signs for SEC Electric Machinery (1 can't be ignored!) 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.

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