STATE STREET UNVEILS KEY SERVICE ENHANCEMENTS TO MY.STATESTREET.COM

Comprehensive Access Now Offered from Customer-Focused Web Portal Providing Enhanced Data and Analytical Tools

BOSTON, April 5, 2005 – At its U.S. client conference in Arizona today, State Street Corporation (NYSE: STT), the world’s leading provider of services to institutional investors, announced the addition of several new and enhanced services and analytics to my.statestreet.com, the company’s secure Web-based platform for customer data and applications.

My.statestreet.com provides a secure, single entry point to State Street’s full suite of sophisticated market data and analysis applications in a highly customizable environment. The site allows customers access to a consolidated view of their account information, performance measurement and risk analysis tools, State Street research reports on global financial markets and securities lending tools.

To meet customers’ needs in a market characterized by increased regulatory pressures, evolving asset categories, and complex financial and management challenges, State Street further enhanced my.statestreet.com by introducing Corporate Governance Portfolio Analysis (CGPA), based on research by leaders in the field of corporate governance research and reporting. CGPA enables customers to evaluate the corporate governance attributes of their investment portfolios. The data leverages State Street’s analytical tools, providing customers with valuable information to help them detect and mitigate risk and manage opportunity more completely.

State Street also announced enhancements to the existing services offered on my.statestreet.com, including: investment compliance, which provides customized reporting capabilities to streamline and simplify the monitoring process; risk reporting services, which will provide a more comprehensive range of risk management tools; headquarters reporting, which enables customers to view worldwide investment information, including market values, asset allocation, exposures, performance results and positions; performance comparison, which provides data on more than 1,200 plans representing more than 20,000 portfolios with assets in excess of $2 trillion; and performance measurement, which customers can use to access customized reports and performance information from anywhere in the world.

"We are excited to introduce this suite of new and enhanced services and tools on my.statestreet.com and expect our customers will benefit from 24-hour access to cutting edge, customizable investor solutions delivered on a flexible platform," said Robert Tarter, executive vice president of State Street. "These new offerings establish a new standard for Web-based customer access technology within our industry and exemplify State Street’s commitment to continually meeting the wide array of our customers’ needs for practical, value-added, decision support technologies that enhance their performance and deepen our relationships."

"The wide-ranging performance and risk reporting capabilities of my.statestreet.com constitute a breakthrough in Web-based functionality," said Joseph Antonellis, chief information officer for State Street. "These innovations underscore State Street’s focus on unique technologies that aggregate a broad range of sophisticated information and analytical tools in a highly customizable and user-friendly interface."

My.statestreet.com also has a capability for alerting customers to new product developments and systems enhancements, and allows customers to communicate directly with State Street client representatives regarding products and services.

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