STT State Street Corporation

State Street Corporation (NYSE:STT) will host a webcast of the Company�s conference call to discuss its reserve announcement made earlier today. The conference call will take place today, Thursday, January, 3, 2008, at 8:30 a.m. EST, and it will be accessible on State Street's investor relations home page, at www.statestreet.com/stockholder. The conference call will also be available via telephone, at +1 719/325-4829 (confirmation code 4642630). Recorded replays of the conference call will be available on the web site, and by telephone at +1 719/457-0820 (passcode 4642630), beginning at 2:00 p.m. today. The telephone replay will be available for approximately two weeks following the conference call. About State Street Corporation 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 $15.1 trillion in assets under custody and $2.0 trillion in assets under management at September 30, 2007, 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.