NYSE Euronext (NYX) announced today that it has been recognized by the Ethisphere Institute, a leading business ethics think-tank, as one of the 2012 World's Most Ethical Companies. From among a record number of nominations for the annual award, NYSE Euronext for the third time secured representation on the Ethisphere list by upholding the highest standard of ethics, performance, respect and excellence and for promoting these values to the financial services industry and global business community.

"Observing the highest ethical standards is a fundamental tenet of NYSE Euronext's core values and is vital to our firm's DNA," said Duncan L. Niederauer, CEO, NYSE Euronext. "We are honored to once again be named one of the World's Most Ethical Companies by the Ethisphere Institute and to join so many of our listed companies and other outstanding organizations that share this recognition."

This is the sixth year Ethisphere has published the WME rankings. Ethisphere reviewed hundreds of companies and evaluated a record number of applications utilizing its propriety methodology through in-depth research and multi-step analysis, naming the companies that surpassed their industry peers to this year's World's Most Ethical Companies list.

"A strong ethical foundation is a competitive advantage, and NYSE Euronext recognizes the important role corporate responsibility plays in improving its bottom line," said Alex Brigham, executive director of the Ethisphere Institute. "As more and more organizations strive for this honor each year, NYSE Euronext's inclusion as a World's Most Ethical Company for 2012 demonstrates its industry-leading commitment to ethics and dedication to integrity."

The methodology for the WME ranking includes reviewing codes of ethics, litigation and regulatory infraction histories; evaluating the investment in innovation and sustainable business practices; looking at activities designed to improve corporate citizenship; and studying nominations from senior executives, industry peers, suppliers and customers.

Read about the methodology and view the complete list of the 2012 World's Most Ethical Companies at http://ethisphere.com/.

About Ethisphere Institute:

The research-based Ethisphere® Institute is a leading international think-tank dedicated to the creation, advancement and sharing of best practices in business ethics, corporate social responsibility, anti-corruption and sustainability. Ethisphere Magazine, which publishes the globally recognized World's Most Ethical Companies Ranking™, is the quarterly publication of the Institute. Ethisphere provides the only third-party verifications of compliance programs and ethical cultures that include: Ethics Inside® Certification, Compliance Leader Verification™ and Anti-Corruption Program Verification™. The Institute's premier membership group, the Business Ethics Leadership Alliance™, is a business ethics forum that includes more than 100 leading corporations, universities and institutions that collectively leverage their experience, expertise and innovative ways to address emerging compliance challenges. More information on the Ethisphere Institute, including ranking projects and membership, can be found at http://www.ethisphere.com

About NYSE Euronext

NYSE Euronext (NYX) is a leading global operator of financial markets and provider of innovative trading technologies. The company's exchanges in Europe and the United States trade equities, futures, options, fixed-income and exchange-traded products. With approximately 8,000 listed issues (excluding European Structured Products), NYSE Euronext's equities markets - the New York Stock Exchange, NYSE Euronext, NYSE Amex, NYSE Alternext and NYSE Arca - represent one-third of the world's equities trading, the most liquidity of any global exchange group. NYSE Euronext also operates NYSE Liffe, one of the leading European derivatives businesses and the world's second-largest derivatives business by value of trading. The company offers comprehensive commercial technology, connectivity and market data products and services through NYSE Technologies. NYSE Euronext is in the S&P 500 index, and is the only exchange operator in the Fortune 500. For more information, please visit: http://www.nyx.com.

Disclaimer and 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 2011 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.

NYSE Euronext
Keara Everdell, 212-656-2159
keverdell@nyx.com
or
For Ethisphere
Rubenstein Associates
Alex J. Stockham, 213-537-0017
astockham@rubenstein.com
or
Gabe Roth, 212-843-8067
groth@rubenstein.com