STT State Street Corporation

State Street Corporation (NYSE: STT) announced today that its vice chairman Joseph L. Hooley will speak at the UBS Global Financial Services Conference in New York on Tuesday, May 15, at 8:10 a.m. EDT. The presentation will be accessible at that time on State Street�s investor relations home page at www.statestreet.com/stockholder. A recorded replay of the presentation also will be available on the investor relations website beginning later that day. State Street Corporation (NYSE: STT) is the world's leading provider of financial services to institutional investors including investment servicing, investment management and investment research and trading. With $12.3 trillion in assets under custody and $1.8 trillion in assets under management at March 31, 2007, State Street operates in 26 countries and more than 100 geographic markets and employs 21,950 worldwide. For more information, visit State Street�s web site at www.statestreet.com or call 877/639-7788 [NEWS STT] toll-free in the United States and Canada, or +1 678/999-4577 outside those countries.