In financial analysis, the so-called "Du Pont Identity" is a method of
breaking down and analysing a given Return on Equity (ROE) into three
descriptive components. I want to know where this came from. Why is it
called the "Du Pont" identity? Since when is it called this? Was it
first used by financial analysts at the Du Pont company? Du Pont has a
financial management division previously called Pension Fund
Investments now called DuPont Capital Management; did this group have
anything to do with coining the phrase or popularizing the method?