PRESS RELEASE

BM&FBOVESPA Selects StreamBase CEP for Enterprise-Wide Deployment

The Brazilian exchange continues its innovation in technology that enables high frequency trading

SAO PAULO and LONDON  — JUNE 7,  2011— StreamBase today announced that BM&FBOVESPA, the largest exchange operator in Latin America, has selected StreamBase’s Complex Event Processing (CEP) platform for the enterprise-wide deployment of real-time data processing applications. The Brazilian exchange will use StreamBase CEP to develop and deploy a variety of applications that provide its clients with low-latency automated trading capabilities across securities and derivatives markets. “The development of capital markets in Latin America is experiencing the fastest growing phase in decades. Innovation is the key for us to develop a liquid, low-latency and fair marketplace for our worldwide investors,” said Marcio Castro, Chief Technology Officer of BM&FBOVESPA. “StreamBase CEP will be incorporated into our multi-asset trading infrastructure that can be accessed through the CME Globex electronic trading platform. StreamBase’s high-performance multi-threaded event server and visual development studio enable us to rapidly roll out sophisticated models that react to changing market conditions.” “Since 2009, exchanges around the world have been relying on technology to grow and facilitate their business. The Brazilian market is no exception, gaining rapid momentum by successfully enhancing trading infrastructures, introducing modern pricing structures, and establishing strategic partnerships,” said Paul Zubulake, Senior Analyst at Aite Group. “A faster and broader adoption of better software technology across the entire financial spectrum is critical to the growth of emerging markets.” “Brazil is quickly establishing itself as a leader on the global trading stage and we’re pleased to be the CEP platform of choice for BM&FBOVESPA,” said Mark Palmer, CEO of StreamBase. “This selection further demonstrates how broadly CEP is impacting the financial markets as they continue to automate operations, from front to back office, and to exchanges. BM&FBOVESPA represents further adoption of StreamBase CEP by the world’s most demanding companies for an exchange-class platform to deliver low-latency, rapid time to market applications for automated trading using our visual programming environment.” For more information please contact: Emily Pan StreamBase Systems, Inc. Tel: +1 (917) 621-2631 Email: press-enquiries@streambase.com Twitter: @streambase Facebook: http://www.facebook.com/streambase Media Pack: http://www.streambase.com/press-enquiries.htm Gustavo Farinelli BM&FBOVESPA S.A. Securities, Commodities and Futures Exchange Director of Communication Tel: +55 (11) 2565-7865 Email: gferreira@bvmf.com.br About StreamBase StreamBase Systems, Inc, a leader in high-performance Complex Event Processing (CEP), provides software for rapidly building systems that analyze and act on real-time streaming data for instantaneous decision-making. The World Economic Forum recently awarded StreamBase the title of 2010 Technology Pioneer. StreamBase’s Event Processing Platform™ combines a rapid application development environment, an ultra low-latency high-throughput event server, and the broadest connectivity to real-time and historical data. Leading investment banks, hedge funds, and government agencies use StreamBase to power mission-critical applications that increase revenue, lower costs, and reduce risk. Applications in Capital Markets include FX Aggregation and Pricing, Smart Order Routing, Market Data Management and Algorithmic Trading. StreamBase customers include CME Group, SunGard, ConvergEx Group, RBC Capital Markets, CMC Markets, City Index and BlueCrest Capital Management. The company is headquartered in Lexington, Massachusetts with offices in New York, Washington D.C. and London. For more information, visitwww.streambase.com. About BM&FBOVESPA BM&FBOVESPA – Brazilian Securities, Commodities and Futures Exchange was created in 2008 with the integration between the Brazilian Mercantile & Futures Exchange (BM&F) and the Sao Paulo Stock Exchange (Bovespa). Together, the companies have formed the third largest exchange in the world in terms of market value, the second largest in the Americas, and the leading exchange in Latin America. BM&FBOVESPA offers trading in equities on the cash, options and forward markets, and indices, interest rates, foreign exchange, agricultural and energy commodities on the futures, options, forward and swap markets, as well as other spot market transactions on gold, US Dollar and federal government securities. In order to provide investors with efficient and secure services, BM&FBOVESPA utilizes state-of-the-art technology. With its fully integrated business model BM&FBOVESPA is able to offer not only a sophisticated trading environment, but also registration, clearing, settlement, risk management, and central depository services. It also acts as the central counterparty for all of the transactions carried out in its markets by way of its four clearinghouses: equities, derivatives, securities, and foreign exchange. For more information, visit www.bmfbovespa.com.br