STT State Street Corporation

State Street Corporation (NYSE: STT), the world's leading provider of financial services to institutional investors, announced today that it ranked No. 33 on the 2006 InformationWeek 500. State Street received the honor at the exclusive InformationWeek 500 conference in Rancho Mirage, California. 2006 marks the fourth consecutive year that State Street has been named to this prestigious ranking. "Our inclusion in the InformationWeek 500 is a testament to our team's ability to develop the most innovative technology solutions for our customers year after year," said Joseph Antonellis, executive vice president and chief information officer for State Street. "Our commitment to investing in our technology and the professional development of our IT team are directly benefiting our customers around the world." State Street was chosen for the InformationWeek 500 based on its success in building upon its online and on-demand information delivery architecture, mystatestreet.com. State Street is also expanding upon its middle office platform for investment manager operations outsourcing, creating the industry's best-in-class integrated platform to service the middle office of global investment managers. State Street's IT organization is structured in a way that not only fosters, but also depends on cross-functional teamwork. Its motivational program for IT professionals, "Excellence In Action," is the foundation behind the company's semiannual CIO Award, which honors the work of 30 select IT employees. "We'd like to extend our sincere congratulations to all InformationWeek 500 honorees. These companies represent today's leading technology innovators, many of whom have joined us this week," said InformationWeek's publishing director, Fritz Nelson. "This group has prompted fascinating discussion on some of the most forward-looking business technology initiatives to date." For the past 18 years, InformationWeek has identified and honored the nation's most innovative users of information technology with its annual listing. The list is unique among corporate rankings because it spotlights the power of innovation in information technology, rather than simply identifying the biggest IT spenders. Additional details on the InformationWeek 500 can be found online at www.informationweek.com/iw500/. 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 $10.9 trillion in assets under custody and $1.5 trillion in assets under management at June 30, 2006, State Street operates in 26 countries and more than 100 geographic markets worldwide. For more information, visit State Street's web site at www.statestreet.com. About InformationWeek InformationWeek sets the agenda for business technology executives, covering the full range of information access points IT decision-makers use today. A trusted, authoritative source and information filter, InformationWeek helps community members understand and focus on what's important up-to-the-minute -- in print, online, through independent research and at live, peer-to-peer events. Through its cross-media platform, InformationWeek delivers content to complement the print publication to its community of business technology leaders when and how they want it, 24/7. The InformationWeek community includes an audience of 2.5 million CIOs, IT executives and business managers who cut across industries, job titles, company sizes and global borders. InformationWeek is consistently recognized for its commitment to excellence and thought leadership by the IT community, receiving many of the industry's top media accolades, including several awards from the American Society of Business Publication Editors (ASBPE), top spots in BtoB Magazine's Media Power 50 and Circulation Excellence Awards from Circulation Management Magazine. About CMP Technology CMP Technology is a marketing solutions company serving the technology, healthcare and lifestyles industries. Through its market-leading portfolio of trusted information brands, CMP Technology has earned the confidence of more professionals and enthusiasts in these fields than any other media company. As a result, CMP is the premier provider of access, insight and actionable programs designed to connect sellers and buyers in each of these industries in ways that yield superior return on investment. CMP Technology is a subsidiary of United Business Media (http://www.unitedbusinessmedia.com), a global provider of news distribution and specialist information services with a market capitalization of more than $3 billion.