STT State Street Corporation

State Street Corporation (NYSE: STT), the world�s leading provider of financial services to institutional investors, announced today that it has completed the closing of its acquisition of Currenex. The acquisition accelerates State Street�s participation in the fast growing electronic foreign exchange trading market while significantly increasing and diversifying State Street�s trading customers beyond traditional asset managers to include more active currency managers and hedge funds. Together, State Street and Currenex will provide customers with the most comprehensive set of foreign exchange trading capabilities available in the market place today. About State Street Corporation: State Street Corporation (NYSE: STT) is the world's leading specialist in providing institutional investors with investment servicing, investment management and investment research and trading services. With US$11.9 trillion in assets under custody and US$1.7 trillion in assets under management as of December 31, 2006, State Street operates in 26 countries and more than 100 geographic markets worldwide. For more information, visit State Street�s website at www.statestreet.com.