Naipu Mining Machinery's (SZSE:300818) stock is up by a considerable 23% over the past month. As most would know, fundamentals are what usually guide market price movements over the long-term, so we decided to look at the company's key financial indicators today to determine if they have any role to play in the recent price movement. Specifically, we decided to study Naipu Mining Machinery's ROE in this article.

Return on equity or ROE is an important factor to be considered by a shareholder because it tells them how effectively their capital is being reinvested. In simpler terms, it measures the profitability of a company in relation to shareholder's equity.

How To Calculate Return On Equity?

ROE can be calculated by using the formula:

Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity

So, based on the above formula, the ROE for Naipu Mining Machinery is:

5.1% = CN¥68m ÷ CN¥1.3b (Based on the trailing twelve months to September 2023).

The 'return' is the amount earned after tax over the last twelve months. So, this means that for every CN¥1 of its shareholder's investments, the company generates a profit of CN¥0.05.

What Is The Relationship Between ROE And Earnings Growth?

We have already established that ROE serves as an efficient profit-generating gauge for a company's future earnings. Depending on how much of these profits the company reinvests or "retains", and how effectively it does so, we are then able to assess a company's earnings growth potential. Generally speaking, other things being equal, firms with a high return on equity and profit retention, have a higher growth rate than firms that don't share these attributes.

Naipu Mining Machinery's Earnings Growth And 5.1% ROE

When you first look at it, Naipu Mining Machinery's ROE doesn't look that attractive. Next, when compared to the average industry ROE of 7.5%, the company's ROE leaves us feeling even less enthusiastic. However, the moderate 20% net income growth seen by Naipu Mining Machinery over the past five years is definitely a positive. We reckon that there could be other factors at play here. For example, it is possible that the company's management has made some good strategic decisions, or that the company has a low payout ratio.

Next, on comparing with the industry net income growth, we found that Naipu Mining Machinery's growth is quite high when compared to the industry average growth of 11% in the same period, which is great to see.

The basis for attaching value to a company is, to a great extent, tied to its earnings growth. What investors need to determine next is if the expected earnings growth, or the lack of it, is already built into the share price. By doing so, they will have an idea if the stock is headed into clear blue waters or if swampy waters await. If you're wondering about Naipu Mining Machinery's's valuation, check out this gauge of its price-to-earnings ratio, as compared to its industry.

Is Naipu Mining Machinery Efficiently Re-investing Its Profits?

In Naipu Mining Machinery's case, its respectable earnings growth can probably be explained by its low three-year median payout ratio of 21% (or a retention ratio of 79%), which suggests that the company is investing most of its profits to grow its business.

Moreover, Naipu Mining Machinery is determined to keep sharing its profits with shareholders which we infer from its long history of four years of paying a dividend.

Conclusion

On the whole, we do feel that Naipu Mining Machinery has some positive attributes. With a high rate of reinvestment, albeit at a low ROE, the company has managed to see a considerable growth in its earnings. While we won't completely dismiss the company, what we would do, is try to ascertain how risky the business is to make a more informed decision around the company. You can see the 3 risks we have identified for Naipu Mining Machinery by visiting our risks dashboard for free on our platform here.

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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.