APA Corporation's (NASDAQ:APA) price-to-earnings (or "P/E") ratio of 3.8x 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.

Recent times have been advantageous for APA as its earnings have been rising faster than most other companies. It might be that many expect the strong earnings performance to degrade substantially, which has repressed the P/E. 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.

Want the full picture on analyst estimates for the company? Then our free report on APA will help you uncover what's on the horizon.

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

In order to justify its P/E ratio, APA would need to produce anemic growth that's substantially trailing the market.

Retrospectively, the last year delivered an exceptional 34% gain to the company's bottom line. Pleasingly, EPS has also lifted 278% in aggregate from three years ago, thanks to the last 12 months of growth. Accordingly, shareholders would have probably welcomed those medium-term rates of earnings growth.

Shifting to the future, estimates from the analysts covering the company suggest earnings growth is heading into negative territory, declining 17% per annum over the next three years. With the market predicted to deliver 11% growth per year, that's a disappointing outcome.

In light of this, it's understandable that APA'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. 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 APA's P/E?

It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

As we suspected, our examination of APA'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. It's hard to see the share price rising strongly in the near future under these circumstances.

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 low P/E).

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.