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Many investors are still learning about the various metrics that can be useful when analysing a stock. This article is for those who would like to learn about Return On Equity (ROE). To keep the lesson grounded in practicality, we'll use ROE to better understand Armstrong World Industries, Inc. (NYSE:AWI).
Return on equity or ROE is a key measure used to assess how efficiently a company's management is utilizing the company's capital. Put another way, it reveals the company's success at turning shareholder investments into profits.
View our latest analysis for Armstrong World Industries
How To Calculate Return On Equity?
The formula for ROE is:
Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity
So, based on the above formula, the ROE for Armstrong World Industries is:
36% = US$182m ÷ US$498m (Based on the trailing twelve months to June 2021).
The 'return' is the amount earned after tax over the last twelve months. Another way to think of that is that for every $1 worth of equity, the company was able to earn $0.36 in profit.
Does Armstrong World Industries Have A Good Return On Equity?
Arguably the easiest way to assess company's ROE is to compare it with the average in its industry. Importantly, this is far from a perfect measure, because companies differ significantly within the same industry classification. Pleasingly, Armstrong World Industries has a superior ROE than the average (17%) in the Building industry.
That's what we like to see. However, bear in mind that a high ROE doesn’t necessarily indicate efficient profit generation. A higher proportion of debt in a company's capital structure may also result in a high ROE, where the high debt levels could be a huge risk .
How Does Debt Impact ROE?
Companies usually need to invest money to grow their profits. The cash for investment can come from prior year profits (retained earnings), issuing new shares, or borrowing. In the first two cases, the ROE will capture this use of capital to grow. In the latter case, the debt required for growth will boost returns, but will not impact the shareholders' equity. Thus the use of debt can improve ROE, albeit along with extra risk in the case of stormy weather, metaphorically speaking.
Armstrong World Industries' Debt And Its 36% ROE
Armstrong World Industries does use a high amount of debt to increase returns. It has a debt to equity ratio of 1.41. While no doubt that its ROE is impressive, we would have been even more impressed had the company achieved this with lower debt. Debt does bring extra risk, so it's only really worthwhile when a company generates some decent returns from it.