Kangda International Environmental Company Limited (HKG:6136) shareholders would be excited to see that the share price has had a great month, posting a 28% gain and recovering from prior weakness. But the last month did very little to improve the 50% share price decline over the last year.

In spite of the firm bounce in price, Kangda International Environmental's price-to-earnings (or "P/E") ratio of 4.8x might still make it look like a buy right now compared to the market in Hong Kong, where around half of the companies have P/E ratios above 9x and even P/E's above 18x are quite common. 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 Kangda International Environmental 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. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Is There Any Growth For Kangda International Environmental?

There's an inherent assumption that a company should underperform the market for P/E ratios like Kangda International Environmental's to be considered reasonable.

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 69%. The last three years don't look nice either as the company has shrunk EPS by 74% in aggregate. Accordingly, shareholders would have felt downbeat about the medium-term rates of earnings growth.

Weighing that medium-term earnings trajectory against the broader market's one-year forecast for expansion of 23% shows it's an unpleasant look.

In light of this, it's understandable that Kangda International Environmental's P/E would sit below the majority of other companies. Nonetheless, there's no guarantee the P/E has reached a floor yet with earnings going in reverse. Even just maintaining these prices could be difficult to achieve as recent earnings trends are already weighing down the shares.

The Key Takeaway

The latest share price surge wasn't enough to lift Kangda International Environmental's P/E close to the market median. 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.

As we suspected, our examination of Kangda International Environmental revealed its shrinking earnings over the medium-term are contributing to its low P/E, given the market is set to grow. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. If recent medium-term earnings trends continue, it's hard to see the share price moving strongly in either direction in the near future under these circumstances.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 5 warning signs with Kangda International Environmental (at least 2 which make us uncomfortable), and understanding them should be part of your investment process.

You might be able to find a better investment than Kangda International Environmental. 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.