When close to half the companies in the United States have price-to-earnings ratios (or "P/E's") above 17x, you may consider Quanex Building Products Corporation (NYSE:NX) as an attractive investment with its 14.3x P/E ratio. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's limited.

With its earnings growth in positive territory compared to the declining earnings of most other companies, Quanex Building Products has been doing quite well of late. 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.

Is There Any Growth For Quanex Building Products?

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

Retrospectively, the last year delivered a decent 11% gain to the company's bottom line. The latest three year period has also seen an excellent 86% overall rise in EPS, aided somewhat by its short-term performance. So we can start by confirming that the company has done a great job of growing earnings over that time.

Turning to the outlook, the next year should bring diminished returns, with earnings decreasing 5.8% as estimated by the three analysts watching the company. With the market predicted to deliver 11% growth , that's a disappointing outcome.

In light of this, it's understandable that Quanex Building Products' 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 the weak outlook is weighing down the shares.

The Bottom Line On Quanex Building Products' P/E

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of Quanex Building Products' 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 is also worth noting that we have found 1 warning sign for Quanex Building Products that you need to take into consideration.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.