Clearwater Paper Corporation (NYSE:CLW) shareholders that were waiting for something to happen have been dealt a blow with a 29% share price drop in the last month. Longer-term shareholders would now have taken a real hit with the stock declining 6.0% in the last year.

Although its price has dipped substantially, Clearwater Paper's price-to-earnings (or "P/E") ratio of 11.9x might still 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 18x and even P/E's above 32x are quite common. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

For instance, Clearwater Paper's receding earnings in recent times would have to be some food for thought. It might be that many expect the disappointing earnings performance to continue or accelerate, which has repressed the P/E. However, if this doesn't eventuate then existing shareholders may be feeling optimistic about the future direction of the share price.

How Is Clearwater Paper's Growth Trending?

Clearwater Paper's P/E ratio would be typical for a company that's only expected to deliver limited growth, and importantly, perform worse than the market.

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 32%. Still, the latest three year period has seen an excellent 936% 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.

This is in contrast to the rest of the market, which is expected to grow by 15% over the next year, materially lower than the company's recent medium-term annualised growth rates.

With this information, we find it odd that Clearwater Paper is trading at a P/E lower than the market. Apparently some shareholders believe the recent performance has exceeded its limits and have been accepting significantly lower selling prices.

The Bottom Line On Clearwater Paper's P/E

The softening of Clearwater Paper's shares means its P/E is now sitting at a pretty low level. 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.

Our examination of Clearwater Paper revealed its three-year earnings trends aren't contributing to its P/E anywhere near as much as we would have predicted, given they look better than current market expectations. There could be some major unobserved threats to earnings preventing the P/E ratio from matching this positive performance. It appears many are indeed anticipating earnings instability, because the persistence of these recent medium-term conditions would normally provide a boost to the share price.

Plus, you should also learn about these 3 warning signs we've spotted with Clearwater Paper.

If these risks are making you reconsider your opinion on Clearwater Paper, 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.