DOW JONES INDUSTRIAL AVERAGE
The Dow Jones Industrial Average (NYSE: DJI, also called the DJIA, Dow 30, INDP, or informally the Dow Jones or The Dow) is one of several stock market indices, created by nineteenth-century Wall Street Journal editor and Dow Jones & Company co-founder Charles Dow.
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| The average is computed from the stock prices of 30 of the largest and most widely held public companies in the United States.
The "industrial" portion of the name is largely historical—many of the 30 modern components have little to do with traditional heavy industry. The average is price-weighted.
It is an index that shows how certain stocks have traded. Dow compiled the index to gauge the performance of the industrial sector of the American stock market. It is the second-oldest U.S. market index, after the Dow Jones Transportation Average, which Dow also created. |
To compensate for the effects of stock splits and other adjustments, it is currently a scaled average, not the actual average of the prices of its component stocks—the sum of the component prices is divided by a divisor, which changes whenever one of the component stocks has a stock split or stock dividend, to generate the value of the index.
Since the divisor is currently less than one, the value of the index is higher than the sum of the component prices.
Criticism
With the current inclusion of only 30 stocks, critics like Ric Edelman argue that the DJIA is not a very accurate representation of the overall market performance even though it is the most cited and most widely recognized of the stock market indices. Daily FOREX Signals
Additionally, the DJIA is criticized for being a price-weighted average, which gives relatively higher-priced stocks more influence over the average than their lower-priced counterparts, but takes no account of the relative size or market capitalization of the components. For example, a $1 increase in a lower-priced stock can be negated by a $1 decrease in a much higher-priced stock, even though the first stock experienced a larger percentage change.
In addition, a $1 move in the smallest component of the DJIA has the same effect as a $1 move in the largest component of the index. As of March 2009, IBM is the highest priced stock in the index and therefore has the greatest influence on it.
Many critics of the DJIA recommend the float-adjusted market-value weighted S&P 500 or the Dow Jones Wilshire 5000, the latter of which includes all U.S. securities with readily available prices, as better indicators of the U.S. market.
Another issue with the Dow is that not all 30 components open at the same time in the morning. On the days when not all the components open at the start, the posted opening price of the Dow is determined by the price of those few components that open first and the previous day's closing price of the remaining components that haven't opened yet; on those days, the posted opening price on the Dow will be close to the previous day's closing price (which can be observed by looking at Dow price history) and will not accurately reflect the true opening prices of all its components.
Thus, in terms of candlestick charting theory, the Dow's posted opening price cannot be used in determining the condition of the market.
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