Is it ensure, insure, or assure?
U.S. stock exchange, founded 1971, an acronym from National Association of Securities Dealers Automated Quotations.
An electronic stock market, where all trading takes place through NASDAQ's computer network rather than at a central trading location. Started in 1971, NASDAQ surpassed the New York Stock Exchange in annual share volume during the 1990s, mainly because of its popularity with investors of emerging high-tech companies. Microsoft®, for example, is listed on NASDAQ.