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Dow Jones Industrial Average

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The Dow Jones Industrial Average (DJIA) is a stock market index that measures the performance of the 30 largest publicly traded companies in the United States. It is one of the most closely watched stock market indices in the world and is often used as a barometer of the overall health of the U.S. economy.

The DJIA was created in 1896 by Charles Dow and Edward Jones and is calculated by taking the sum of the share prices of the 30 companies that make up the index. The index is then divided by a divisor that is adjusted to keep the index from becoming too large or too small. The DJIA is updated in real-time throughout the trading day and is published at the end of each trading day.

The DJIA is a widely followed index by investors, analysts, and the media. It is often used as a benchmark against which other stock market indices are compared. The index is also used by investors to track the performance of their own portfolios.