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-- Offering Greater Choice and Flexibility to Serve Customer Needs --

NEW  YORK , May 21, 2009 – NYSE Euronext (NYX) has completed the roll out of the first phase of more than 20 execution algorithms provided by Deep Value Inc., adding to its already highly successful floor broker algorithm initiative.  Since the program’s inception in July 2008, trading floor brokers have utilized algorithmic execution strategies directly from their hand-held devices to supplement their high-touch service with uniquely engineered automation.  All algo strategies are available for use by floor brokers trading NYSE- and NYSE Amex-listed issues.

“Deep Value brings a highly innovative approach to algorithmic trading. Designed in collaboration with floor brokers, this initial suite of Deep Value algorithms introduces the concept of microstrategies™: sophisticated quoting and execution strategies that automate the rapid and intuitive characteristics found in the trading tactics of floor brokers,” said Michael Rutigliano, Vice President-Broker Liaison, NYSE Euronext.  “These customized strategies, designed exclusively for floor brokers, strengthen brokers’ automated abilities, enable the brokers to engage in sophisticated new behaviors to deliver performance, seek and attract dark and block-sized liquidity, and provide significant price improvement. This is yet another step in the Exchanges’ ongoing commitment to provide customers who utilize floor brokers with richer and more diverse execution choices.”  

“These unusual times in the world economies and U.S. markets have created a compelling need for human judgment and experience in the trading function.   Market fragmentation and the millisecond timescales of market operation, on the other hand, demand good automation,” said Harish Devarajan, Managing Director of Deep Value.   “Where previously customers could essentially only choose one or the other, we are now providing an array of sophisticated algorithms and narrower computer-driven tactics that brokers can use as automated assistants to serve their customers better.”

The NYSE last week completed the phase I release floor wide. Deep Value servers are co-located in NYSE Euronext’s data centers and directly utilize NYSE Technologies’ Super Feed market data to minimize latency and maximize the value of the algorithms to the floor broker community and their customers.  Deep Value’s fault-tolerant technology handles the exchange-scale algorithmic loads via a NYSE-dedicated grid of commodity servers.  All Deep Value strategies trade at parity, providing brokers the continuing ability to match on every trade.   The algorithms are customizable and enable brokers to use their current execution and quoting strategies simultaneously.   All strategies compete with the National Best Bid and Offer and are Regulation NMS compliant.

About NYSE Euronext
NYSE Euronext (NYX) is the world’s most diverse exchange group, offering a broad and growing array of financial products and services in Europe and the United States that include cash equities, futures, options, exchange-traded products, bonds, market data, and commercial technology solutions.   With over 8,000 listed issues globally, NYSE Euronext's equities markets -- the New York Stock Exchange, Euronext, NYSE Arca, and NYSE Amex -- represent nearly 40% of the world's cash equities trading volume, the most liquidity of any global exchange group.  NYSE Euronext also operates NYSE Liffe, the leading European derivatives business and the world’s second largest derivatives business by value of trading.  NYSE Euronext offers comprehensive global commercial technology, connectivity, and market data products and services through its innovative trading solutions unit, NYSE Technologies.  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.

About Deep Value
Deep Value, Inc. is an innovative firm whose algorithmic trading vehicles offer top-tier performance and contribute material volumes to equity markets daily.  The firm’s algorithmic lineup includes dark pool accessors, standardly-used   algorithms, and a wide range of custom vehicles.  The firm provides advanced execution strategies to hedge funds, proprietary trading   groups, broker-dealers and institutional asset managers.   Founded in 2005, the firm pioneered the pay-for- performance model in algorithmic trading and has a strong track record of innovation with other notable firsts to its credit: An “algo-of-algos” product that delivers best execution via real-time, performance-based, broker-neutral algorithmic routing; the first commercially-available platform for controlled, statistically-robust experimentation to validate and exploit high-frequency effects; and interactive algorithms that combine algorithmic sophistication with human traders’ expertise to allow a trader and an algorithm to trade in tandem with fine-grained interactions with each other. For more information, please visitwww.deepvalue.net .
   
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 2008 (“document de référence”) filed with the French Autorité des Marchés Financiers (Registered on April 28, 2009 under No. R. 09-031), 2008 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.