Koppers Holdings Inc.'s (NYSE:KOP) price-to-earnings (or "P/E") ratio of 11.5x might make it look like a buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 17x and even P/E's above 33x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the reduced P/E.

Koppers Holdings 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. One possibility is that the P/E is low because investors think the company's earnings are going to fall away like everyone else's soon. 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 Koppers Holdings

How Is Koppers Holdings' Growth Trending?

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

Retrospectively, the last year delivered an exceptional 26% gain to the company's bottom line. Despite this strong recent growth, it's still struggling to catch up as its three-year EPS frustratingly shrank by 2.9% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Turning to the outlook, the next year should generate growth of 2.8% as estimated by the dual analysts watching the company. That's shaping up to be materially lower than the 10% growth forecast for the broader market.

With this information, we can see why Koppers Holdings is trading at a P/E lower than the market. Apparently many shareholders weren't comfortable holding on while the company is potentially eyeing a less prosperous future.

The Key Takeaway

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.

We've established that Koppers Holdings maintains its low P/E on the weakness of its forecast growth being lower than the wider market, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. It's hard to see the share price rising strongly in the near future under these circumstances.

Plus, you should also learn about these 3 warning signs we've spotted with Koppers Holdings (including 2 which shouldn't be ignored).

If these risks are making you reconsider your opinion on Koppers Holdings, explore our interactive list of high quality stocks to get an idea of what else is out there.

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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.