With a price-to-earnings (or "P/E") ratio of 21.9x Trinity Industries, Inc. (NYSE:TRN) may be sending bearish signals at the moment, given that almost half of all companies in the United States have P/E ratios under 16x and even P/E's lower than 8x are not unusual. However, the P/E might be high for a reason and it requires further investigation to determine if it's justified.

Recent times have been pleasing for Trinity Industries as its earnings have risen in spite of the market's earnings going into reverse. It seems that many are expecting the company to continue defying the broader market adversity, which has increased investors' willingness to pay up for the stock. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Check out our latest analysis for Trinity Industries

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

Trinity Industries' P/E ratio would be typical for a company that's expected to deliver solid growth, and importantly, perform better than the market.

Taking a look back first, we see that the company grew earnings per share by an impressive 47% last year. Pleasingly, EPS has also lifted 5,480% in aggregate from three years ago, thanks to the last 12 months of growth. Accordingly, shareholders would have probably welcomed those medium-term rates of earnings growth.

Shifting to the future, estimates from the five analysts covering the company suggest earnings should grow by 62% over the next year. That's shaping up to be materially higher than the 10% growth forecast for the broader market.

With this information, we can see why Trinity Industries is trading at such a high P/E compared to the market. Apparently shareholders aren't keen to offload something that is potentially eyeing a more prosperous future.

The Key Takeaway

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 Trinity Industries 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.

Before you take the next step, you should know about the 4 warning signs for Trinity Industries (2 are a bit unpleasant!) that we have uncovered.

You might be able to find a better investment than Trinity Industries. If you want a selection of possible candidates, check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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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.