Suntech S.A.'s (WSE:SUN) 35% Share Price Plunge Could Signal Some Risk

Suntech S.A. (WSE:SUN) shares have had a horrible month, losing 35% after a relatively good period beforehand. For any long-term shareholders, the last month ends a year to forget by locking in a 54% share price decline.

Although its price has dipped substantially, Suntech's price-to-earnings (or "P/E") ratio of 15x might still make it look like a sell right now compared to the market in Poland, where around half of the companies have P/E ratios below 12x and even P/E's below 7x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the elevated P/E.

As an illustration, earnings have deteriorated at Suntech over the last year, which is not ideal at all. One possibility is that the P/E is high because investors think the company will still do enough to outperform the broader market in the near future. If not, then existing shareholders may be quite nervous about the viability of the share price.

See our latest analysis for Suntech

Want the full picture on earnings, revenue and cash flow for the company? Then our free report on Suntech will help you shine a light on its historical performance.

Is There Enough Growth For Suntech?

The only time you'd be truly comfortable seeing a P/E as high as Suntech's is when the company's growth is on track to outshine the market.

Retrospectively, the last year delivered a frustrating 23% decrease to the company's bottom line. This means it has also seen a slide in earnings over the longer-term as EPS is down 51% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Comparing that to the market, which is predicted to deliver 14% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we find it concerning that Suntech is trading at a P/E higher than the market. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. There's a very good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the recent negative growth rates.

The Final Word

Suntech's P/E hasn't come down all the way after its stock plunged. Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

Our examination of Suntech revealed its shrinking earnings over the medium-term aren't impacting its high P/E anywhere near as much as we would have predicted, given the market is set to grow. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

And what about other risks? Every company has them, and we've spotted 3 warning signs for Suntech (of which 1 is significant!) you should know about.

If you're unsure about the strength of Suntech's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.