What Is Return on Equity?
Return on equity — ROE — divides net income by stockholders' equity. It measures how much profit a company earns in a year for each dollar of owners' capital recorded on its balance sheet.
ROE answers a question absolute profit cannot: how hard is the owners' money working? Two companies can each earn a billion dollars, but if one needs twenty billion of equity to do it and the other needs five, the second is using its owners' capital four times as productively. That is why investors reach for ROE when comparing companies of very different sizes within similar industries.
The measure has two well-known traps. First, borrowing inflates it: debt lets a company control more assets per dollar of equity, so profits rise relative to the equity base — along with risk. A high ROE built on heavy leverage is not the same achievement as the same ROE earned unleveraged. Second, share buybacks shrink equity, mechanically lifting ROE even when profit is flat, and companies with very small or negative equity can produce meaningless or misleading figures, which is why this site's ROE ranking excludes non-positive equity rather than printing an absurd percentage.
Read ROE as a starting point for questions, not a verdict. Compare it within an industry, check whether debt or buybacks are doing the lifting, and set it beside return on assets — the same profit measured against everything the company controls, however financed. The gap between the two returns is, in effect, the contribution of leverage, and filings disclose every input needed to see it.
Putting it into practice
A classic decomposition protects against the leverage trap: ROE can be split into net profit margin, asset turnover and the ratio of assets to equity. When a company's ROE rises, the three parts show whether profit quality improved, assets worked harder, or the balance sheet simply geared up. Every input for that split is printed on this site's company pages, and ten minutes with the three components is worth more than an hour spent admiring the headline ROE alone.
A worked example from a real filing
Abstract definitions stick better with a real number attached. Take Nvidia Corp (NVDA): in fiscal 2026 it reported revenue of $215.94 billion in its annual 10-K filing, as republished in the SEC EDGAR company facts dataset retrieved in October 2026. Open its company page and you can place that figure next to the same company's net income, operating cash flow, total assets and diluted earnings per share for the same year — the relationships between the measures, not any single one of them, are where understanding lives. Then compare it with peers in the rankings, where the same measures are lined up across the largest filers.
For the full set of plain-English explainers, return to the Learn index, and for exactly how this site selects and labels figures, read the methodology page.