Linewell Software Co., Ltd. (SHSE:603636) shareholders are no doubt pleased to see that the share price has bounced 26% in the last month, although it is still struggling to make up recently lost ground. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 26% in the last twelve months.

Following the firm bounce in price, given close to half the companies in China have price-to-earnings ratios (or "P/E's") below 31x, you may consider Linewell Software as a stock to avoid entirely with its 67.7x P/E ratio. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

For example, consider that Linewell Software's financial performance has been poor lately as its earnings have been in decline. 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.

How Is Linewell Software's Growth Trending?

The only time you'd be truly comfortable seeing a P/E as steep as Linewell Software'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 4.6%. This means it has also seen a slide in earnings over the longer-term as EPS is down 19% 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.

In contrast to the company, the rest of the market is expected to grow by 39% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

With this information, we find it concerning that Linewell Software is trading at a P/E higher than the market. 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. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh heavily on the share price eventually.

The Final Word

The strong share price surge has got Linewell Software's P/E rushing to great heights as well. 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 Linewell Software 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.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 4 warning signs with Linewell Software (at least 2 which are a bit concerning), and understanding these should be part of your investment process.

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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