When close to half the companies in the United States have price-to-earnings ratios (or "P/E's") below 19x, you may consider RTX Corporation (NYSE:RTX) as a stock to avoid entirely with its 34.1x 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 so lofty.

RTX certainly has been doing a good job lately as it's been growing earnings more than most other companies. The P/E is probably high because investors think this strong earnings performance will continue. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Want the full picture on analyst estimates for the company? Then our free report on RTX will help you uncover what's on the horizon.

Does Growth Match The High P/E?

In order to justify its P/E ratio, RTX would need to produce outstanding growth well in excess of the market.

Taking a look back first, we see that the company grew earnings per share by an impressive 62% last year. The latest three year period has also seen an excellent 59% overall rise in EPS, aided 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 three years should generate growth of 19% per annum as estimated by the analysts watching the company. That's shaping up to be materially higher than the 11% per annum growth forecast for the broader market.

In light of this, it's understandable that RTX's P/E sits above the majority of other companies. It seems most investors are expecting this strong future growth and are willing to pay more for the stock.

The Bottom Line On RTX's P/E

It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

We've established that RTX maintains its high P/E on the strength of its forecast growth being higher than the wider market, as expected. Right now shareholders are comfortable with the P/E as they are quite confident future earnings aren't under threat. It's hard to see the share price falling strongly in the near future under these circumstances.

You should always think about risks. Case in point, we've spotted 2 warning signs for RTX you should be aware of.

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