NYSE Euronext To Host Investor Day On Monday, Apr. 2, 2012

NYSE Euronext (NYX) will host an investor day for the professional investment community on Monday, April 2, 2012, at the New York Stock Exchange, 11 Wall Street, New York, NY. The day's schedule will commence with opening remarks at 1:00 p.m. and is expected to conclude at approximately 5:00 p.m.

Presenters at this conference will include Duncan L. Niederauer, Chief Executive Officer, NYSE Euronext and other members of the company's executive management team.

Attendance at the event is by invitation only, but the general public is invited to view the presentations and listen to a live audio webcast of the event beginning at 1:00 p.m., April 2 on the NYSE Euronext website at http://ir.nyse.com/. The presentations referenced during the call will also be posted to the same website and a replay of the webcast will be available for approximately 90 days following the investor day.

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 reference document for 2010 ("document de référence") filed with the French Autorité des Marchés Financiers (Filed on April 19, 2011 under No. D.11-0333), 2010 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.