Despite an already strong run, Guangdong Piano Customized Furniture Co., Ltd. (SZSE:002853) shares have been powering on, with a gain of 28% in the last thirty days. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 29% in the last twelve months.

Since its price has surged higher, Guangdong Piano Customized Furniture may be sending very bearish signals at the moment with a price-to-earnings (or "P/E") ratio of 55x, since almost half of all companies in China have P/E ratios under 36x and even P/E's lower than 21x are not unusual. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

For instance, Guangdong Piano Customized Furniture's receding earnings in recent times would have to be some food for thought. 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.

Is There Enough Growth For Guangdong Piano Customized Furniture?

The only time you'd be truly comfortable seeing a P/E as steep as Guangdong Piano Customized Furniture's is when the company's growth is on track to outshine the market decidedly.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 71%. The last three years don't look nice either as the company has shrunk EPS by 87% in aggregate. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

In contrast to the company, the rest of the market is expected to grow by 41% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

In light of this, it's alarming that Guangdong Piano Customized Furniture's P/E 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/E falls to levels more in line with the recent negative growth rates.

What We Can Learn From Guangdong Piano Customized Furniture's P/E?

Shares in Guangdong Piano Customized Furniture have built up some good momentum lately, which has really inflated its P/E. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

We've established that Guangdong Piano Customized Furniture currently trades on a much higher than expected P/E since its recent earnings have been in decline over the medium-term. When we see earnings heading backwards and underperforming the market forecasts, we suspect the share price is at risk of declining, sending the high P/E lower. 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.

Don't forget that there may be other risks. For instance, we've identified 4 warning signs for Guangdong Piano Customized Furniture (2 are significant) you should be aware of.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.