Interactive Data Offers New Javascript Interface for Dynamic Financial Websites

Frankfurt, Germany - August 24, 2009 - Interactive Data Corporation (NYSE: IDC), a leading provider of financial market data, analytics and related solutions, today announced that its Managed Solutions business now offers a JavaScript application programming interface (API), which provides developers with access to a powerful market data platform that standardises a wide range of global data sources. The JavaScript API is designed to support current trends in web development such as frequently-updated websites based on asynchronous JavaScript and XML (AJAX).

The JavaScript API is available through Interactive Data’s PrimeDeveloper service, which offers IT departments and software firms a range of tools to develop new or expand existing websites quickly and efficiently. The interface provides real-time, delayed or end-of-day access to a wide range of international financial information, including securities pricing, company and capital markets data, as well as news. Intelligent analytical functions enable charting, searches, rankings and alerts. Both push-based and pull-based data delivery is possible.

“With the new JavaScript API, our clients can develop even more flexible web applications with increased functionality and enhanced content,” said Carsten Dirks, managing director of Interactive Data’s Managed Solutions business. “We work with many of the world’s largest banks, mutual and investment fund companies, stock exchanges and financial websites to help them differentiate themselves in the marketplace, respond efficiently to client needs, optimise workflows and lower operating costs.”

Interactive Data offers customised and hosted solutions based on its fast and flexible market data platform, which standardises structured and unstructured market data from around 200 global content suppliers, as well as proprietary data. In addition to the new JavaScript API, interfaces for PHP, .NET and Java programming languages are also available.

About Interactive Data Corporation

Interactive Data Corporation (NYSE: IDC) is a leading global provider of financial market data, analytics and related solutions 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. Interactive Data, headquartered in Bedford, Mass., has approximately 2,400 employees in offices located throughout North America, Europe, Asia and Australia. 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’s Managed Solutions business is a leading provider and operator of customised financial information systems. The group builds and manages Web-based financial market data portals and terminals for a range of organisations worldwide, from retail and investment banks to asset managers, online brokers, stock exchanges and media portals. By aggregating a broad set of financial data and client-proprietary content and offering visually stunning features such as charts, sophisticated search functions, decision-support tools and analytics, these intuitive applications can help customers optimise their business processes and realise efficiencies. This group is managed as part of the Interactive Data’s Real-Time Services business, which provides a comprehensive suite of offerings that includes PlusFeed^SM, a consolidated, low-latency digital datafeed.

For more information about Interactive Data Corporation and its businesses, please visit www.interactivedata.com.

Interactive Data^SM and the Interactive Data logo are service marks of Interactive Data Corporation.