A market indicator is a tool used to measure the performance of a particular stock or the overall stock market. The most common market indicators are the LIST, which stands for Leading Indicators, the DOW, which stands for Dow Jones Industrial Average, the TREND, which stands for Technical Analysis and the ACASE, which stands for American Case-Shiller Home Price Index. The BELLWETHERSTOCK is a stock that is used to gauge the overall direction of the stock market.