IDC Interactive Data Corp.

Interactive Data Corporation (NYSE: IDC), a leading provider of financial market data, analytics and related services, today announced that its Real-Time Services business has introduced its new generation of the high-speed Titan Data Network. This real-time data distribution network is based on IP Multicast, replacing the existing Internet protocol suite (TCP/IP) to more effectively manage rapidly growing data volumes. The Titan Data Network-Multicast is designed to handle up to three million messages per second � an increase of more than three times the amount of current volumes � and to save additional milliseconds to help improve latency. This infrastructure supports the delivery of PlusFeedSM, Interactive Data�s consolidated low latency digital data feed. Interactive Data has observed that market data volumes have increased at least 90 percent annually for five of the last six years. In April 2008 the Options Price Reporting Authority (OPRA) predicted that firms taking in the OPRA feed directly would experience bandwidth requirement increases of 50 percent in excess of its original volume projections made in July 2007. Also, recent OPRA forecasts revealed that these volumes could increase by an additional 30 percent between July 2008 and January of 2009. NYSE Euronext, NASDAQ OMX and MiFID have also been significant contributors to growing market data volumes. The Titan Data Network-Multicast is engineered to accommodate full OPRA and depth of market data. �Interactive Data�s flexible technology infrastructure can enable us to respond rapidly to significant growth rate projections in data volumes that have been issued by several key exchanges,� said Jay Kilberg, managing director, Interactive Data Real-Time Services. �Exponentially growing market data volumes, coupled with an essential need for improved latency, continue to be important issues for our clients. Launching this new generation of the Titan Data Network that employs the IP Multicast protocol allows us to help clients address these issues now and in the future.� In addition to rolling out the Titan Data Network-Multicast, Interactive Data conducts ongoing capacity planning reviews of its real-time technology infrastructure, including its state-of-the-art ticker plant, data processors and routers, to help support increased transaction rates and delivery of a vast universe of data with low latency through PlusFeed. 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 Real-Time Services is a leading provider of real-time global market data to financial institutions, redistributors and online financial portals worldwide. Offerings from Interactive Data Real-Time Services include PlusFeed, a consolidated, low latency digital datafeed. Also managed as part of this business is Interactive Data Managed Solutions, a leading provider and operator of customized financial market information systems For more information about Interactive Data Corporation and its businesses, please visit www.interactivedata.com Interactive Data,SM PlusFeed and the Interactive Data logo are service marks of Interactive Data Corporation.