Dow 30

The Dow Jones Industrial Average (DJIA), also known as the Dow 30, is a stock market index that is made up of 30 of the largest companies in the United States. It is one of the most widely followed stock market indexes in the world, and is often used as a barometer of the overall health of the stock market.

The Dow Jones Industrial Average was created in 1896 by Charles Dow, the founder of The Wall Street Journal. The index was originally made up of 12 companies, but it has been expanded over the years to include 30 companies. The companies in the Dow Jones Industrial Average are selected by a committee of editors at The Wall Street Journal. The committee considers a variety of factors when selecting companies for the index, including market capitalization, price-to-earnings ratio, and dividend yield.

The Dow Jones Industrial Average is a price-weighted index, which means that the price of each stock in the index is multiplied by its weighting factor to determine the index value. The weighting factors for the companies in the Dow Jones Industrial Average are based on their market capitalization. The company with the largest market capitalization has the largest weighting factor, and the company with the smallest market capitalization has the smallest weighting factor.

The Dow Jones Industrial Average is a leading indicator of the stock market. When the Dow Jones Industrial Average is rising, it indicates that the stock market is bullish. When the Dow Jones Industrial Average is falling, it indicates that the stock market is bearish.

The Dow Jones Industrial Average is a valuable tool for investors who want to track the overall health of the stock market. It can also be used to identify trends in the stock market and to make investment decisions.

Here are some additional details about the Dow Jones Industrial Average:

* The Dow Jones Industrial Average is the oldest stock market index in the world.
* The Dow Jones Industrial Average is the most widely followed stock market index in the world.
* The Dow Jones Industrial Average is a price-weighted index.
* The Dow Jones Industrial Average is a leading indicator of the stock market.
* The Dow Jones Industrial Average is a valuable tool for investors.