The NASDAQ Counterpart is the American Stock Exchange (AMEX), which is a stock exchange based in New York City. It is the second-largest stock exchange in the United States, after the New York Stock Exchange (NYSE). The Dow Jones Industrial Average (DOW) is a stock market index that tracks the performance of 30 large companies listed on the NYSE and AMEX. The NYSE is the largest stock exchange in the world, located in New York City. It is the oldest stock exchange in the United States and is home to some of the most well-known companies in the world.