Dorian LPG Ltd.'s (NYSE:LPG) price-to-earnings (or "P/E") ratio of 5.7x might make it look like a strong buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 19x and even P/E's above 34x are quite common. However, the P/E might be quite low for a reason and it requires further investigation to determine if it's justified.

DorianG certainly has been doing a good job lately as its earnings growth has been positive while most other companies have been seeing their earnings go backwards. It might be that many expect the strong earnings performance to degrade substantially, possibly more than the market, which has repressed the P/E. If not, then existing shareholders have reason to be quite optimistic about the future direction of the share price.

Does Growth Match The Low P/E?

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

If we review the last year of earnings growth, the company posted a terrific increase of 77%. Pleasingly, EPS has also lifted 288% in aggregate from three years ago, thanks to the last 12 months of growth. Therefore, it's fair to say the earnings growth recently has been superb for the company.

Shifting to the future, estimates from the three analysts covering the company suggest earnings growth is heading into negative territory, declining 22% each year over the next three years. Meanwhile, the broader market is forecast to expand by 10% each year, which paints a poor picture.

In light of this, it's understandable that DorianG's P/E would sit below the majority of other companies. However, shrinking earnings are unlikely to lead to a stable P/E over the longer term. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Key Takeaway

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.

As we suspected, our examination of DorianG's analyst forecasts revealed that its outlook for shrinking earnings is contributing to its low P/E. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

Before you settle on your opinion, we've discovered 3 warning signs for DorianG (1 doesn't sit too well with us!) that you should be aware of.

You might be able to find a better investment than DorianG. 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.

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