With a price-to-earnings (or "P/E") ratio of 5x Dorian LPG Ltd. (NYSE:LPG) may be sending very bullish signals at the moment, given that almost half of all companies in the United States have P/E ratios greater than 19x and even P/E's higher than 36x are not unusual. However, the P/E might be quite low for a reason and it requires further investigation to determine if it's justified.

DorianG could be doing better as its earnings have been going backwards lately while most other companies have been seeing positive earnings growth. It seems that many are expecting the dour earnings performance to persist, which has repressed the P/E. If this is the case, then existing shareholders will probably struggle to get excited about the future direction of the share price.

Keen to find out how analysts think DorianG's future stacks up against the industry? In that case, our free report is a great place to start.

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.

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 8.1%. Still, the latest three year period has seen an excellent 151% overall rise in EPS, in spite of its unsatisfying short-term performance. 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 slump, contracting by 15% each year during the coming three years according to the four analysts following the company. That's not great when the rest of the market is expected to grow by 11% each year.

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. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

Having said that, be aware DorianG is showing 3 warning signs in our investment analysis, and 1 of those is potentially serious.

Of course, you might also be able to find a better stock than DorianG. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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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.