The market wasn't impressed with the soft earnings from Trinity Industries, Inc. (NYSE:TRN) recently. We did some analysis, and found that there are some reasons to be cautious about the headline numbers.

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Importantly, our data indicates that Trinity Industries' profit received a boost of US$60m in unusual items, over the last year. We can't deny that higher profits generally leave us optimistic, but we'd prefer it if the profit were to be sustainable. When we analysed the vast majority of listed companies worldwide, we found that significant unusual items are often not repeated. Which is hardly surprising, given the name. If Trinity Industries doesn't see that contribution repeat, then all else being equal we'd expect its profit to drop over the current year.

That might leave you wondering what analysts are forecasting in terms of future profitability. Luckily, you can click here to see an interactive graph depicting future profitability, based on their estimates.

Arguably, Trinity Industries' statutory earnings have been distorted by unusual items boosting profit. Therefore, it seems possible to us that Trinity Industries' true underlying earnings power is actually less than its statutory profit. But on the bright side, its earnings per share have grown at an extremely impressive rate over the last three years. At the end of the day, it's essential to consider more than just the factors above, if you want to understand the company properly. If you'd like to know more about Trinity Industries as a business, it's important to be aware of any risks it's facing. Case in point: We've spotted 3 warning signs for Trinity Industries you should be mindful of and 2 of these are concerning.

This note has only looked at a single factor that sheds light on the nature of Trinity Industries' profit. But there are plenty of other ways to inform your opinion of a company. For example, many people consider a high return on equity as an indication of favorable business economics, while others like to 'follow the money' and search out stocks that insiders are buying. So you may wish to see this free collection of companies boasting high return on equity, or this list of stocks with high insider ownership.

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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.