News Releases

NEW YORK, May 21, 2008 -- NYSE Euronext (NYX) today announced the appointment of Joseph M. Mecane as Executive Vice President and Chief Administrative Officer for U.S. Markets. Mr. Mecane will be responsible for U.S. market planning, analysis and project oversight. He will report to Lawrence Leibowitz, Group Executive Vice President and Head of U.S. Execution and Global Technology.

"Joe is a top-quality industry professional and market structure expert who brings a wealth of experience to our organization," said Mr. Leibowitz. "Joe will play a key role in ensuring that our strategy across our U.S. platforms is cohesive, highly competitive and responsive to our customers."

Mr. Mecane joins NYSE Euronext from UBS Investment Bank, where he was a Managing Director in the Equities Division, responsible for overseeing the firm’s wholesale and retail trade-execution business. He joined UBS in November 2004 when the firm acquired Schwab Capital Markets, where Mr. Mecane was a Managing Director and Chief Operating Officer and oversaw Schwab’s broker-dealer business. He has been deeply involved in market-structure issues, and at UBS ran the Equities Division’s committees on market structure and execution quality.

Prior to joining Schwab in 2003, Mr. Mecane held a number of positions at Knight Securities, including Chief Operating Officer of its Nasdaq division. Before that, he worked in the Securities Industry Practice group at PricewaterhouseCoopers LLP.

Mr. Mecane has been a member of the Trading Issues Committee of the Securities Industry and Financial Markets Association, the Trading Issues Committee of the Securities Traders Association, the Securities Traders Association of New York and the Nasdaq Quality of Markets Committee, and sits on the Wall Street Committee of the St. Jude Children’s Research Hospital. He earned his M.B.A. with honors from The Wharton School, University of Pennsylvania.

NYSE Euronext’s U.S. markets include the New York Stock Exchange, the world’s largest cash equities market; NYSE Arca, the first open, fully electronic U.S. stock exchange; NYSE Arca Options, one of the fastest-growing U.S. options trading platforms; and NYSE Bonds, a new, more efficient and transparent way to trade bonds. In addition, NYSE recently agreed to acquire the American Stock Exchange, pending approvals.

About NYSE Euronext
NYSE Euronext (NYX) operates the world’s leading and most liquid exchange group, and seeks to provide the highest levels of quality, customer choice and innovation. NYSE Euronext offers a diverse array of financial products and services for issuers, investors and financial institutions in cash equities, options and derivatives, ETFs, bonds, market data, and commercial technology solutions. NYSE Euronext's nearly 4,000 listed companies represent a combined $ 30.9/ € 19.8 trillion in total global market capitalization (as of April 30, 2008), more than four times that of any other exchange group. NYSE Euronext's equity exchanges transact an average daily trading value of approximately $161.9 / €106.9 billion (as of April 30, 2008), which represents more than one-third of the world's cash equities trading. NYSE Euronext is part of the S&P 500 index and the only exchange operator in the S&P 100 index. For more information, please visit www.nyx.com.

Cautionary Note Regarding Forward-Looking Statements
This press release may contain forward-looking statements, including forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements concerning NYSE Euronext’s plans, objectives, expectations and intentions and other statements that are not historical or current facts. Forward-looking statements are based on NYSE Euronext’s current expectations and involve risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such forward-looking statements. Factors that could cause NYSE Euronext’s results to differ materially from current expectations include, but are not limited to: NYSE Euronext’s ability to implement its strategic initiatives, economic, political and market conditions and fluctuations, government and industry regulation, interest rate risk and U.S. and global competition, and other factors detailed in NYSE Euronext’s reference document for 2007 ("document de référence") filed with the French Autorité des Marchés Financiers (Registered on May 15, 2008 under No. R. 08-054), 2007 Annual Report on Form 10-K and other periodic reports filed with the U.S. Securities and Exchange Commission or the French Autorité des Marchés Financiers. In addition, these statements are based on a number of assumptions that are subject to change. Accordingly, actual results may be materially higher or lower than those projected. The inclusion of such projections herein should not be regarded as a representation by NYSE Euronext that the projections will prove to be correct. This press release speaks only as of this date. NYSE Euronext disclaims any duty to update the information herein.