- 1 decade agoFavorite Answer
NASDAQ (National Association of Securities Dealers Automated Quotations system) is an American stock market. It was founded in 1971 by the National Association of Securities Dealers (NASD), who divested themselves of it in a series of sales in 2000 and 2001. It is owned and operated by The Nasdaq Stock Market, Inc. the stock of which was listed on its own stock exchange in 2002. NASDAQ is the largest electronic screen-based equity securities market in the United States. With approximately 3,200 companies, it lists more companies and on average trades more shares per day than any other U.S. market.
NASDAQ allows multiple market participants to trade through its Electronic Communication Networks (ECNs) structure, increasing competition. The Small Order Execution System (SOES) is another NASDAQ feature, introduced in 1987, to ensure that in 'turbulent' market conditions small market orders are not forgotten but are automatically processed. With approximately 3,200 companies, it lists more companies and, on average, its systems trade more shares per day than any other stock exchange in the world. NASDAQ will follow the New York Stock Exchange in halting domestic trading in the event of a sharp and sudden decline of the Dow Jones Industrial AverageSource(s): try wikipedia next time :)