NYSE Euronext Formerly known as NYSE Group, Inc.. The Group's principal activity is to provide securities listing, trading and information products and services. The Group through its subsidiaries, operates and regulates two securities exchanges: the NYSE and NYSE Arca, Inc. NYSE is the most liquid cash equities exchange. NYSE operates an auction ... More

NYSE Euronext Formerly known as NYSE Group, Inc.. The Group's principal activity is to provide securities listing, trading and information products and services. The Group through its subsidiaries, operates and regulates two securities exchanges: the NYSE and NYSE Arca, Inc. NYSE is the most liquid cash equities exchange. NYSE operates an auction market in which orders are electronically transmitted for execution. NYSE Arca is the first open, all-electronic stock exchange in the United States. NYSE Arca's trading platforms link traders to multiple U.S. market centers and provide customers with fast electronic execution and open, direct and anonymous market access. As of 31-December-2006, the Group had approximately 2,713 operating companies. The Group has its operations in United States. On 17-June-2006, the Group acquired MatchPoint Trading, Inc, 18-September-2006, Marco Polo Network Inc. and on 08-Jan-2007, TransactTools, Inc.