INDU is an acronym for the Dow Jones Industrial Average, which is a stock market index that measures the performance of 30 large, publicly owned companies in the United States. It is often used as a barometer of the overall health of the U.S. stock market and the broader U.S. economy. The companies that make up the Dow Jones Industrial Average are typically leaders in their respective industries and include well-known names such as Apple, Coca-Cola, and Goldman Sachs.