T&S Communications Co.,Ltd. (SZSE:300570) shares have had a really impressive month, gaining 27% after a shaky period beforehand. Looking back a bit further, it's encouraging to see the stock is up 73% in the last year.

After such a large jump in price, T&S CommunicationsLtd may be sending very bearish signals at the moment with a price-to-earnings (or "P/E") ratio of 65.9x, since almost half of all companies in China have P/E ratios under 28x and even P/E's lower than 17x 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.

With earnings that are retreating more than the market's of late, T&S CommunicationsLtd has been very sluggish. One possibility is that the P/E is high because investors think the company will turn things around completely and accelerate past most others in the market. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Is There Enough Growth For T&S CommunicationsLtd?

T&S CommunicationsLtd's P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Retrospectively, the last year delivered a frustrating 17% decrease to the company's bottom line. However, a few very strong years before that means that it was still able to grow EPS by an impressive 84% in total over the last three years. Accordingly, while they would have preferred to keep the run going, shareholders would probably welcome the medium-term rates of earnings growth.

Looking ahead now, EPS is anticipated to climb by 44% during the coming year according to the three analysts following the company. Meanwhile, the rest of the market is forecast to expand by 41%, which is not materially different.

In light of this, it's curious that T&S CommunicationsLtd's P/E sits above the majority of other companies. Apparently many investors in the company are more bullish than analysts indicate and aren't willing to let go of their stock right now. Although, additional gains will be difficult to achieve as this level of earnings growth is likely to weigh down the share price eventually.

What We Can Learn From T&S CommunicationsLtd's P/E?

Shares in T&S CommunicationsLtd have built up some good momentum lately, which has really inflated its P/E. While the price-to-earnings ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of earnings expectations.

Our examination of T&S CommunicationsLtd's analyst forecasts revealed that its market-matching earnings outlook isn't impacting its high P/E as much as we would have predicted. Right now we are uncomfortable with the relatively high share price as the predicted future earnings aren't likely to support such positive sentiment for long. This places shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

Having said that, be aware T&S CommunicationsLtd is showing 3 warning signs in our investment analysis, and 1 of those is a bit unpleasant.

You might be able to find a better investment than T&S CommunicationsLtd. If you want a selection of possible candidates, check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.