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It is one of the most commonly followed equity indices, and many consider it one of the best representations of the U. Blitzer has overall responsibility for index security selection. Three years later in , the Composite Index expanded to 90 stocks and then in it expanded to its current Technology has allowed the index to be calculated and disseminated in real time. In September , Ultronic Systems Corp. On August 12, , the index closed at The following describes the ups and downs of the period year to date.
On March 24, , the index reached an intraday high of By October 10, , the index had fallen to Although the index achieved a new all-time intraday high on October 11, , at 1, Less than a month later, it dropped to 1,, and would not see similar levels again for five years.
In mid, the subprime mortgage crisis spread to the wider U. The resulting situation became acute in September , ushering in a period of unusual market volatility , encompassing record point swings in both directions and reaching the highest levels since The index reached a nearly year low, closing at The entire drop from high in Oct to low in Mar was On April 29, , the index closed at On March 28, , it closed above the closing high from This would be the first of three point milestones in On February 17, , the index first closed above 2,, closing at 2, On February 25, it reached 2, At the end of , the index closed at 2, A period of over a year with no new record highs ended on July 11, closing at 2, This is similar to the Dow Jones Industrial Average , but different from others such as the Russell , which are strictly rule-based.
When considering the eligibility of a new addition, the committee assesses the company's merit using eight primary criteria: For example, in order to be added to the index, a company must satisfy the following liquidity-based size requirements: The index includes non-U.
These versions differ in how dividends are accounted for. The price return version does not account for dividends; it only captures the changes in the prices of the index components. The total return version reflects the effects of dividend reinvestment. Finally, the net total return version reflects the effects of dividend reinvestment after the deduction of withholding tax. The index has traditionally been capitalization-weighted ; that is, movements in the prices of stocks with higher market capitalizations the share price times the number of shares outstanding had a greater impact on the value of the index than do companies with smaller market caps.
The transition to float-adjusted capitalization-weighting was made in two steps, the first on March 18, and the second on September 16, Additionally, to remain indicative of the U. To prevent the value of the Index from changing merely as a result of corporate financial actions, all such actions affecting the market value of the Index require a divisor adjustment. There is a large range of different corporate actions that can require the divisor to be adjusted.
These are listed in the table below: