IDC Interactive Data Corp.

Interactive Data Corporation (NYSE: IDC), a leading provider of financial market data, analytics and related services to financial institutions, active traders and individual investors, today announced the closing of its acquisition of Kler�s Financial Data Service S.r.l. (Kler�s), a leading provider of reference data to the Italian financial industry, for a purchase price of �19.0 million (or approximately $29.6 million based on current exchange rates) in cash. The final purchase price remains subject to post-closing working capital adjustments. The acquisition of Kler�s represents an important element in Interactive Data�s strategy to expand its reference data services and to continue increasing its presence across continental Europe. Kler�s, which is based in Rome, provides comprehensive, high-quality reference data, including corporate actions and taxation information, on Italian and international securities, with coverage of equities, listed and unlisted Italian bonds, funds, simple derivatives and warrants. The company�s clients include most major Italian banks and custodians. Kler�s services, which will be will marketed in Italy as Interactive Data Kler�s, are available as a downloadable datafeed for back-office applications or via an online browser that enables clients to search, design reports and perform analysis. About Interactive Data Corporation Interactive Data Corporation (NYSE: IDC) is a leading global provider of financial market data, analytics and related services to financial institutions, active traders and individual investors. The Company's businesses supply real-time market data, time-sensitive pricing, evaluations and reference data for millions of securities traded around the world, including hard-to-value instruments. Many of the world's best-known financial service and software companies subscribe to the Company's services in support of their trading, analysis, portfolio management and valuation activities. Through its businesses, Interactive Data Pricing and Reference Data, Interactive Data Real-Time Services, Interactive Data Fixed Income Analytics, and eSignal, the Company has approximately 2,300 employees in offices located throughout North America, Europe, Asia and Australia. The Company is headquartered in Bedford, Mass. Pearson plc (NYSE: PSO; LSE: PSON), an international media company, whose businesses include the Financial Times Group, Pearson Education, and the Penguin Group, is Interactive Data Corporation's majority stockholder. Interactive Data Corporation is celebrating its 40th anniversary in 2008. Interactive Data Pricing and Reference Data provides global securities pricing, evaluations and reference data designed to support financial institutions� and investment funds' pricing activities, securities operations, research and portfolio management. Interactive Data Pricing and Reference Data collects, edits, maintains and delivers data on more than 3.5 million securities, including daily evaluations for approximately 2.5 million fixed income and international equity issues. Interactive Data Pricing and Reference Data specializes in �hard-to-get� information from emerging markets and evaluates many �hard-to value� instruments. Pricing, evaluations and reference data are provided in the U.S. through Interactive Data Pricing and Reference Data, Inc. and internationally through Interactive Data (Europe) Ltd. and Interactive Data (Australia) Pty Ltd. For more information about Interactive Data Corporation and its businesses, please visit www.interactivedata.com.