AVE Science&Technology CO.,LTD (SHSE:688067) shareholders are no doubt pleased to see that the share price has bounced 27% in the last month, although it is still struggling to make up recently lost ground. Unfortunately, the gains of the last month did little to right the losses of the last year with the stock still down 18% over that time.

After such a large jump in price, AVE Science&TechnologyLTD may be sending very bearish signals at the moment with a price-to-earnings (or "P/E") ratio of 53.8x, since almost half of all companies in China have P/E ratios under 31x and even P/E's lower than 19x are not unusual. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's so lofty.

The earnings growth achieved at AVE Science&TechnologyLTD over the last year would be more than acceptable for most companies. One possibility is that the P/E is high because investors think this respectable earnings growth will be enough to outperform the broader market in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

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

There's an inherent assumption that a company should far outperform the market for P/E ratios like AVE Science&TechnologyLTD's to be considered reasonable.

Taking a look back first, we see that the company grew earnings per share by an impressive 23% last year. Still, incredibly EPS has fallen 46% in total from three years ago, which is quite disappointing. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 40% shows it's an unpleasant look.

In light of this, it's alarming that AVE Science&TechnologyLTD's P/E sits above the majority of other companies. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. 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 Key Takeaway

AVE Science&TechnologyLTD's P/E is flying high just like its stock has during the last month. 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.

Our examination of AVE Science&TechnologyLTD 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.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 2 warning signs with AVE Science&TechnologyLTD (at least 1 which doesn't sit too well with us), and understanding these should be part of your investment process.

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and 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.