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 now offers real-time last sale and quote data, along with depth-of-market data, for securities traded on Canada�s Pure Trading. Pure Trading is a facility of CNSX Markets Inc., a fully recognized stock exchange in Canada that also operates the Canadian National Stock Exchange. Pure Trading offers a competitive alternative auction market system aimed at attracting high frequency traders interested in securities listed on Canadian exchanges. Pure Trading data is delivered to Interactive Data�s clients via PlusFeedSM, the Company�s consolidated high-quality, low latency digital datafeed. PlusFeed is designed to power algorithmic and electronic trading applications. In addition, Pure Trading data will be available to Interactive Data�s clients via eSignal, the flagship product of Interactive Data�s desktop solutions business that provides real-time, financial data and decision support tools to active traders and professionals worldwide. �With an increasing number of clients seeking to obtain real-time data on a variety of companies in Canada, currently the world�s fourth largest trading market, we have responded by offering low latency delivery of Pure Trading data,� said Jay Kilberg, managing director, Interactive Data Real-Time Services. �The availability of this data through PlusFeed can enable our clients to access critical Canadian capital market information.� �We are pleased that Interactive Data is providing its clients with real-time market data from Pure Trading to assist them with generating more comprehensive pricing information for securities,� said Ian Bandeen, CEO and vice-chair of CNSX Markets Inc. �The ability to obtain this information from Pure Trading will continue to be important to market data providers as Pure Trading continues to attract more and more high frequency traders to the Canadian marketplace.� Interactive Data�s delivery of Pure Trading data complements the comprehensive real-time data it provides from some of the industry�s leading ECNs worldwide. Interactive Data currently offers real-time last sale and quote data for all U.S. securities from BATS Trading (BATS), operator of the third-largest U.S. equity market. In addition, the Company delivers data from the Turquoise multilateral trading facility, whose members include many large banks and brokers active in European trading, as well as specialist trading firms and institutions. 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 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 DataSM and the Interactive Data logo are service marks of Interactive Data Corporation. PlusFeed is a service mark of Interactive Data Real-Time Services. About Pure Trading Pure Trading provides an effective and cost efficient alternative for the trading of Canadian equity securities. It is the second major initiative of CNSX Markets Inc., which launched the first new Canadian stock exchange in over 70 years in 2003 (the Canadian National Stock Exchange), and which continues to steadily add to its complement of listed companies, participating dealers and trading volumes. For more information please visit the websites at www.puretrading.ca and www.cnsx.ca.