Du Pont analysis is a framework developed in 1919 by E.I. du Pont de Nemours to evaluate a company's financial and operational performance. It breaks down return on equity into three components: net profit margin, asset turnover, and equity multiplier. This allows managers and investors to identify factors driving changes in ROE and determine strengths and weaknesses. While it provides useful insights, DuPont analysis has limitations such as not considering the time value of money or accounting differences between companies. Overall, it is a popular tool but does not replace a full financial statement analysis.