Unsurprisingly, Illumina, Inc.'s (NASDAQ:ILMN) stock price was strong on the back of its healthy earnings report. We did some analysis and think that investors are missing some details hidden beneath the profit numbers.

The Impact Of Unusual Items On Profit

Importantly, our data indicates that Illumina's profit received a boost of US$213m 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. And that's as you'd expect, given these boosts are described as 'unusual'. If Illumina 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.

Our Take On Illumina's Profit Performance

We'd posit that Illumina's statutory earnings aren't a clean read on ongoing productivity, due to the large unusual item. Therefore, it seems possible to us that Illumina's true underlying earnings power is actually less than its statutory profit. On the bright side, the company showed enough improvement to book a profit this year, after losing money last year. The goal of this article has been to assess how well we can rely on the statutory earnings to reflect the company's potential, but there is plenty more to consider. If you want to do dive deeper into Illumina, you'd also look into what risks it is currently facing. While conducting our analysis, we found that Illumina has 1 warning sign and it would be unwise to ignore this.

This note has only looked at a single factor that sheds light on the nature of Illumina's 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.

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.