Linde plc's (NASDAQ:LIN) price-to-earnings (or "P/E") ratio of 29.3x might make it look like a sell right now compared to the market in the United States, where around half of the companies have P/E ratios below 19x and even P/E's below 11x are quite common. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's as high as it is.

With earnings growth that's superior to most other companies of late, Linde has been doing relatively well. It seems that many are expecting the strong earnings performance to persist, which has raised the P/E. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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Does Growth Match The High P/E?

There's an inherent assumption that a company should outperform the market for P/E ratios like Linde's to be considered reasonable.

Taking a look back first, we see that the company managed to grow earnings per share by a handy 13% last year. Pleasingly, EPS has also lifted 99% in aggregate from three years ago, partly thanks to the last 12 months of growth. So we can start by confirming that the company has done a great job of growing earnings over that time.

Shifting to the future, estimates from the analysts covering the company suggest earnings should grow by 12% each year over the next three years. Meanwhile, the rest of the market is forecast to expand by 12% per year, which is not materially different.

In light of this, it's curious that Linde's P/E sits above the majority of other companies. Apparently many investors in the company are more bullish than analysts indicate and aren't willing to let go of their stock right now. Although, additional gains will be difficult to achieve as this level of earnings growth is likely to weigh down the share price eventually.

The Key Takeaway

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.

We've established that Linde currently trades on a higher than expected P/E since its forecast growth is only in line with the wider market. Right now we are uncomfortable with the relatively high share price as the predicted future earnings aren't likely to support such positive sentiment for long. Unless these conditions improve, it's challenging to accept these prices as being reasonable.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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.