Ningbo Bird Co.,Ltd.'s (SHSE:600130) weak earnings were disregarded by the market. While shares were up, we believe there are some factors in the earnings report that might cause investors some concerns.

The Power Of Non-Operating Revenue

Most companies divide classify their revenue as either 'operating revenue', which comes from normal operations, and other revenue, which could include government grants, for example. Oftentimes, non-operating revenue spikes are not repeated, so it makes sense to be cautious where non-operating revenue has made a very large contribution to total profit. Importantly, the non-operating revenue often comes without associated ongoing costs, so it can boost profit by letting it fall straight to the bottom line, making the operating business seem better than it really is. Notably, Ningbo BirdLtd had a significant increase in non-operating revenue over the last year. In fact, our data indicates that non-operating revenue increased from CN¥88.3m to CN¥96.2m. The high levels of non-operating revenue are problematic because if (and when) they do not repeat, then overall revenue (and profitability) of the firm will fall. Sometimes, you can get a better idea of the underlying earnings potential of a company by excluding unusual boosts to non-operating revenue.

Note: we always recommend investors check balance sheet strength. Click here to be taken to our balance sheet analysis of Ningbo BirdLtd.

How Do Unusual Items Influence Profit?

Alongside that spike in non-operating revenue, it's also important to note that Ningbo BirdLtd'sprofit was boosted by unusual items worth CN¥1.6m in the last twelve months. While it's always nice to have higher profit, a large contribution from unusual items sometimes dampens our enthusiasm. 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'. 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 Ningbo BirdLtd's Profit Performance

In the last year Ningbo BirdLtd's non-operating revenue really gave it a boost, but not in a way that is necessarily going to be sustained. And on top of that, it also saw an unusual item boost its profit, suggesting that next year might see a lower profit number, if these events are not repeated and everything else is equal. Considering all this we'd argue Ningbo BirdLtd's profits probably give an overly generous impression of its sustainable level of profitability. In light of this, if you'd like to do more analysis on the company, it's vital to be informed of the risks involved. For example - Ningbo BirdLtd has 1 warning sign we think you should be aware of.

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.

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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.