With a price-to-earnings (or "P/E") ratio of 39.9x Rogers Corporation (NYSE:ROG) may be sending very bearish signals at the moment, given that almost half of all companies in the United States have P/E ratios under 19x and even P/E's lower than 11x are not unusual. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

While the market has experienced earnings growth lately, Rogers' earnings have gone into reverse gear, which is not great. It might be that many expect the dour earnings performance to recover substantially, which has kept the P/E from collapsing. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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

Rogers' P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

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 50%. As a result, earnings from three years ago have also fallen 50% overall. Accordingly, shareholders would have felt downbeat about the medium-term rates of earnings growth.

Turning to the outlook, the next year should bring diminished returns, with earnings decreasing 1.1% as estimated by the two analysts watching the company. Meanwhile, the broader market is forecast to expand by 15%, which paints a poor picture.

With this information, we find it concerning that Rogers is trading at a P/E higher than the market. Apparently many investors in the company reject the analyst cohort's pessimism and aren't willing to let go of their stock at any price. Only the boldest would assume these prices are sustainable as these declining earnings are likely to weigh heavily on the share price eventually.

The Key Takeaway

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Rogers currently trades on a much higher than expected P/E for a company whose earnings are forecast to decline. Right now we are increasingly uncomfortable with the high P/E as the predicted future earnings are highly unlikely to support such positive sentiment for long. Unless these conditions improve markedly, it's very challenging to accept these prices as being reasonable.

You always need to take note of risks, for example - Rogers has 2 warning signs we think you should be aware of.

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