The New York Stock Exchange (NYSE), nicknamed the "Big Board," is a New York City-based stock exchange. It is the largest stock exchange in the world by dollar volume and the second largest by number of companies listed. Its share volume was exceeded by that of NASDAQ during the 1990s. The New York Stock Exchange has a global capitalization of $23.0 trillion as of September 30, 2006. The NYSE is operated by NYSE Euronext, which was formed by its merger with the fully electronic stock exchange Ar ...