Investors were disappointed by Fluor Corporation's (NYSE:FLR ) latest earnings release. We did some analysis, and found that there are some reasons to be cautious about the headline numbers.

Examining Cashflow Against Fluor's Earnings

One key financial ratio used to measure how well a company converts its profit to free cash flow (FCF) is the accrual ratio. In plain english, this ratio subtracts FCF from net profit, and divides that number by the company's average operating assets over that period. The ratio shows us how much a company's profit exceeds its FCF.

As a result, a negative accrual ratio is a positive for the company, and a positive accrual ratio is a negative. That is not intended to imply we should worry about a positive accrual ratio, but it's worth noting where the accrual ratio is rather high. To quote a 2014 paper by Lewellen and Resutek, "firms with higher accruals tend to be less profitable in the future".

Fluor has an accrual ratio of 0.30 for the year to March 2026. We can therefore deduce that its free cash flow fell well short of covering its statutory profit, suggesting we might want to think twice before putting a lot of weight on the latter. In the last twelve months it actually had negative free cash flow, with an outflow of US$41m despite its profit of US$350.0m, mentioned above. We saw that FCF was US$512m a year ago though, so Fluor has at least been able to generate positive FCF in the past. However, that's not all there is to consider. We can see that unusual items have impacted its statutory profit, and therefore the accrual ratio.

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.

How Do Unusual Items Influence Profit?

The fact that the company had unusual items boosting profit by US$75m, in the last year, probably goes some way to explain why its accrual ratio was so weak. 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. And, after all, that's exactly what the accounting terminology implies. Assuming those unusual items don't show up again in the current year, we'd thus expect profit to be weaker next year (in the absence of business growth, that is).

Our Take On Fluor's Profit Performance

Fluor had a weak accrual ratio, but its profit did receive a boost from unusual items. For the reasons mentioned above, we think that a perfunctory glance at Fluor's statutory profits might make it look better than it really is on an underlying level. With this in mind, we wouldn't consider investing in a stock unless we had a thorough understanding of the risks.

In this article we've looked at a number of factors that can impair the utility of profit numbers, and we've come away cautious. But there are plenty of other ways to inform your opinion of a company. Some people consider a high return on equity to be a good sign of a quality business. While it might take a little research on your behalf, you may find this free collection of companies boasting high return on equity, or this list of stocks with significant insider holdings to be useful.

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.