The third largest stock market in the United States, NSX in May 2004 captured a 30 percent market share of trades in Nasdaq-listed stocks, and a 16 percent market share of trades in Amex-listed stocks.
National Stock Exchange, the nation's first all-electronic stock exchange, is the low-cost provider of exchange services and a recognized alternative to the primary markets. Having replaced its physical trading floor with a completely automated market in 1980, NSX has been a model of exchange efficiency and a driving force for change in the world of securities exchanges. Founded in 1885, the Exchange changed its name on November 7, 2003 to the National Stock Exchange from the Cincinnati Stock Exchange.