DU PONT analysis is a tool used to examine a company's return on equity. It breaks down ROE into three components: profit margin, total asset turnover, and financial leverage. ROE is calculated as profit margin multiplied by total asset turnover multiplied by equity multiplier. ROI is also related to ROE, with ROE equal to ROI multiplied by total assets divided by owners' equity. DU PONT analysis can help investors better understand the drivers of a company's ROE and make more informed decisions.