Those holding Yunnan Nantian Electronics Information Co.,Ltd. (SZSE:000948) shares would be relieved that the share price has rebounded 30% in the last thirty days, but it needs to keep going to repair the recent damage it has caused to investor portfolios. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 41% in the last twelve months.

After such a large jump in price, given around half the companies in China have price-to-earnings ratios (or "P/E's") below 29x, you may consider Yunnan Nantian Electronics InformationLtd as a stock to potentially avoid with its 38x P/E ratio. 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.

With earnings growth that's exceedingly strong of late, Yunnan Nantian Electronics InformationLtd has been doing very well. It seems that many are expecting the strong earnings performance to beat most other companies over the coming period, which has increased investors' willingness to pay up for the stock. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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

There's an inherent assumption that a company should outperform the market for P/E ratios like Yunnan Nantian Electronics InformationLtd's to be considered reasonable.

If we review the last year of earnings growth, the company posted a terrific increase of 48%. The latest three year period has also seen an excellent 60% overall rise in EPS, aided by its short-term performance. So we can start by confirming that the company has done a great job of growing earnings over that time.

This is in contrast to the rest of the market, which is expected to grow by 41% over the next year, materially higher than the company's recent medium-term annualised growth rates.

In light of this, it's alarming that Yunnan Nantian Electronics InformationLtd's P/E sits above the majority of other companies. It seems most investors are ignoring the fairly limited recent growth rates and are hoping for a turnaround in the company's business prospects. There's a good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with recent growth rates.

The Bottom Line On Yunnan Nantian Electronics InformationLtd's P/E

Yunnan Nantian Electronics InformationLtd shares have received a push in the right direction, but its P/E is elevated too. Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Yunnan Nantian Electronics InformationLtd currently trades on a much higher than expected P/E since its recent three-year growth is lower than the wider market forecast. When we see weak earnings with slower than market growth, we suspect the share price is at risk of declining, sending the high P/E lower. Unless the recent medium-term conditions improve markedly, it's very challenging to accept these prices as being reasonable.

A lot of potential risks can sit within a company's balance sheet. Our free balance sheet analysis for Yunnan Nantian Electronics InformationLtd with six simple checks will allow you to discover any risks that could be an issue.

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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