When close to half the companies in South Africa have price-to-earnings ratios (or "P/E's") above 9x, you may consider Frontier Transport Holdings Limited (JSE:FTH) as an attractive investment with its 5.7x P/E ratio. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

It looks like earnings growth has deserted Frontier Transport Holdings recently, which is not something to boast about. One possibility is that the P/E is low because investors think this benign earnings growth rate will likely underperform 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.

Check out our latest analysis for Frontier Transport Holdings

Although there are no analyst estimates available for Frontier Transport Holdings, take a look at this free data-rich visualisation to see how the company stacks up on earnings, revenue and cash flow.

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

The only time you'd be truly comfortable seeing a P/E as low as Frontier Transport Holdings' is when the company's growth is on track to lag the market.

Retrospectively, the last year delivered virtually the same number to the company's bottom line as the year before. The lack of growth did nothing to help the company's aggregate three-year performance, which is an unsavory 11% drop in EPS. Therefore, it's fair to say the earnings growth recently has been undesirable for the company.

Comparing that to the market, which is predicted to deliver 5.7% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we are not surprised that Frontier Transport Holdings is trading at a P/E lower than the market. However, we think shrinking earnings are unlikely to lead to a stable P/E over the longer term, which could set up shareholders for future disappointment. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Final Word

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 Frontier Transport Holdings 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.

And what about other risks? Every company has them, and we've spotted 2 warning signs for Frontier Transport Holdings you should know about.

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 P/E ratio below 20x).

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.

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