The United States has several major stock market indices, each representing different segments of the financial markets. The most prominent ones are:

1. Dow Jones Industrial Average (DJIA):
   • Often referred to as the “Dow,” it tracks the performance of 30 large, publicly-owned companies in the U.S.
2. S&P 500 (Standard & Poor’s 500):
   • Represents 500 of the largest companies listed on U.S. stock exchanges and is considered a key indicator of the overall market performance.
3. NASDAQ Composite:
   • Tracks the performance of over 3,000 companies listed on the NASDAQ stock exchange, primarily focusing on technology and growth-oriented sectors.

Each index provides a unique perspective on the U.S. economy and financial markets.