9:30 a.m. ET -- In honor of the NYSE Euronext merger, executives from companies listed on both the New York Stock Exchange and on NYSE Euronext visit the New York Stock Exchange.

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4:00 p.m. ET -- NYSE Euronext Chairman Jan-Michiel Hessels, Deputy Chairman Marshall N. Carter, Chief Executive Officer John A. Thain and Deputy Chief Executive Officer Jean-François Théodore ring the NYSE Closing Bell to celebrate the launch of the merger between the NYSE Group, Inc. and Euronext N.V.

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NYSE Euronext (NYSE: NYX / Euronext: NYX)
NYSE Euronext, the holding company created by the combination of NYSE Group, Inc. and Euronext N.V., was launched on April 4, 2007. NYSE Euronext (NYSE/New York and Euronext/Paris: NYX) operates the world’s largest and most liquid exchange group and offers the most diverse array of financial products and services. NYSE Euronext, which brings togethersix cash equities exchanges in five countries and six derivatives exchanges, is a world leader for listings, trading in cash equities, equity and interest rate derivatives, bonds and the distribution of market data.  With a leading $28.5 trillion/€21.5 trillion total market capitalization of listed companies and average daily trading value of its combined markets of approximately $102 billion/€77 billion (as of February 28, 2007), NYSE Euronext seeks to provide the highest standards of market quality and integrity, innovative products and services to investors, issuers, and all users of its markets.

Symbol: “NYX”
NYSE Euronext stock (NYX) is listed in Paris (Euronext) and in New York (NYSE).

Euronext N.V.
Euronext N.V., a wholly owned subsidiary of NYSE Euronext, has successfully integrated local markets across Europe to provide users with a unified market that is broad, liquid and cost effective.  Euronext is the largest central order book cash market in Europe and the second largest derivatives exchange in the world, by value of business traded.

Following the initial three-way merger of the local exchanges of Amsterdam , Brussels and Paris , Euronext acquired the London-based derivatives market LIFFE and merged with the Portuguese exchange in 2002. Euronext’s unique business model incorporates the individual strengths and assets of each local market and has been implemented on all of Euronext’s markets, covers technological integration, the harmonisation of market rules and the regulatory framework.  The implementation of Euronext’s horizontal model designed to generate synergies has proved that the most successful way to merge European exchanges is to apply global vision at a local level.  Euronext’s IT integration was completed in 2004, when a four-year migration plan resulted in harmonised IT platforms for cash trading (NSC®) and derivatives (LIFFE CONNECT®). As a result, every market participant now has a single point of access to trading. Euronext’s IT structure was rationalized in 2005 with the creation of Atos Euronext Market Solutions (AEMS), an IT services-related vehicle between Euronext and Atos Origin which is now a leading global provider of technology services to Euronext and other global capital markets.

NYSE Group, Inc.
NYSE Group, Inc., a wholly owned subsidiary of NYSE Euronext, operates two securities exchanges: the New York Stock Exchange LLC (the "NYSE") and NYSE Arca, Inc. (formerly known as the Pacific Exchange).  NYSE Group is a leading provider of securities listing, trading and market data products and services.

The NYSE is the world’s largest and most liquid cash equities exchange. The NYSE provides a reliable, orderly, liquid and efficient marketplace where investors buy and sell listed companies’ common stock and other securities. NYSE Arca, the first open, all-electronic stock exchange in the United States, has a leading position in trading exchange-traded funds and exchange-listed securities. NYSE Arca is also an exchange for trading equity options. NYSE Arca’s trading platforms provide customers with fast electronic execution and open, direct and anonymous market access. NYSE Regulation, an independent not-for-profit subsidiary, regulates member organizations through the enforcement of marketplace rules and federal securities laws. NYSE Regulation also ensures that companies listed on the NYSE and NYSE Arca meet their financial and corporate governance listing standards.

NYSE Arca Options offers immediate, cost-effective electronic order execution in nearly 2,000 options issues with greater transparency, reliability and performance.

NYSE Bonds is the largest centralized and most transparent bond market of any U.S. exchange or other self-regulatory organization. It offers investors a broad selection of bonds: corporate (including convertibles), agency and government bonds.

SIAC (Securities Industry Automation Corporation), a wholly owned subsidiary of NYSE Group, serves a variety of technology and communications needs for the NYSE, NYSE Arca, and others in the financial services industry.