Hua Hong Semiconductor Limited's (HKG:1347) price-to-earnings (or "P/E") ratio of 11.5x might make it look like a sell right now compared to the market in Hong Kong, where around half of the companies have P/E ratios below 9x and even P/E's below 5x are quite common. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's as high as it is.

While the market has experienced earnings growth lately, Hua Hong Semiconductor's earnings have gone into reverse gear, which is not great. It might be that many expect the dour earnings performance to recover substantially, which has kept the P/E from collapsing. If not, then existing shareholders may be extremely nervous about the viability of the share price.

Does Growth Match The High P/E?

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

Retrospectively, the last year delivered a frustrating 45% decrease to the company's bottom line. Still, the latest three year period has seen an excellent 112% overall rise in EPS, in spite of its unsatisfying short-term performance. Accordingly, while they would have preferred to keep the run going, shareholders would probably welcome the medium-term rates of earnings growth.

Shifting to the future, estimates from the analysts covering the company suggest earnings should grow by 2.5% per annum over the next three years. With the market predicted to deliver 15% growth per annum, the company is positioned for a weaker earnings result.

In light of this, it's alarming that Hua Hong Semiconductor's P/E sits above the majority of other companies. Apparently many investors in the company are way more bullish than analysts indicate and aren't willing to let go of their stock at any price. There's a good chance these shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the growth outlook.

The Final Word

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 Hua Hong Semiconductor's analyst forecasts revealed that its inferior earnings outlook isn't impacting its high P/E anywhere near as much as we would have predicted. When we see a weak earnings outlook with slower than market growth, we suspect the share price is at risk of declining, sending the high P/E lower. This places shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

Before you take the next step, you should know about the 2 warning signs for Hua Hong Semiconductor that we have uncovered.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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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.