Add New Energy Investment Holdings Group Limited (HKG:2623) shares have had a really impressive month, gaining 128% after a shaky period beforehand. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 11% in the last twelve months.

Even after such a large jump in price, Add New Energy Investment Holdings Group may still be sending bullish signals at the moment with its price-to-earnings (or "P/E") ratio of 5.3x, since almost half of all companies in Hong Kong have P/E ratios greater than 10x and even P/E's higher than 19x are not unusual. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

As an illustration, earnings have deteriorated at Add New Energy Investment Holdings Group over the last year, which is not ideal at all. One possibility is that the P/E is low because investors think the company won't do enough to avoid underperforming the broader market in the near future. However, if this doesn't eventuate then existing shareholders may be feeling optimistic about the future direction of the share price.

Does Growth Match The Low P/E?

In order to justify its P/E ratio, Add New Energy Investment Holdings Group would need to produce sluggish growth that's trailing the market.

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 25%. This means it has also seen a slide in earnings over the longer-term as EPS is down 36% 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.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 21% shows it's an unpleasant look.

With this information, we are not surprised that Add New Energy Investment Holdings Group is trading at a P/E lower than the market. Nonetheless, there's no guarantee the P/E has reached a floor yet with earnings going in reverse. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

What We Can Learn From Add New Energy Investment Holdings Group's P/E?

The latest share price surge wasn't enough to lift Add New Energy Investment Holdings Group's P/E close to the market median. Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

As we suspected, our examination of Add New Energy Investment Holdings Group revealed its shrinking earnings over the medium-term are contributing to its low P/E, given the market is set to grow. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. Unless the recent medium-term conditions improve, they will continue to form a barrier for the share price around these levels.

Don't forget that there may be other risks. For instance, we've identified 3 warning signs for Add New Energy Investment Holdings Group (1 is potentially serious) 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.