Answer:
In finance, a stock index, or stock market index, is an index that measures a stock market, or a subset of the stock market, that helps investors compare current price levels with past prices to calculate market performance.
The three most popular stock indexes for tracking the performance of the U.S. market are the Dow Jones Industrial Average (DJIA), S&P 500 Index and Nasdaq Composite Index.
In finance, a stock index, or stock market index, is an index that measures a stock market, or a subset of the stock market, that helps investors compare current price levels with past prices to calculate market performance.
A stock market index is a statistical measure which shows changes taking place in the stock market. ... Any change taking place in the underlying stock prices impact the overall value of the index.
