NYSE Arca to Begin Trading Options on Claymore/MAC Global Solar Energy Index ETF -The FirstSolar Energy ETF-

NYSE Arca to Begin Trading Options on Claymore/MAC Global Solar Energy Index ETF -The FirstSolar Energy ETF-

-Further Proving the Value of an NYSE Euronext Listing-

NEW YORK--April 24 2008 --NYSE Euronext (NYX) today announced that NYSE Arca Options began trading options on Claymore/MAC Global Solar Energy Index ETF (TAN). With an average daily volume increase of 67% in March 2008 and total volume increase by 71% compared to March 2007, NYSE Arca Options continues to offer superior functionality, competitive pricing, and cost effective executions for its customers.

Originally listed on NYSE Arca on April 15, 2008, TAN is designed to track approximately 25 companies within the following business segments of the solar power industry: equipment producers, suppliers of materials or services, installation, integration or finance, and companies that specialize in selling electricity. As the first ETF to offer exposure to solar energy securities, the Claymore/MAC Global Solar Energy Index grants investors access to one of the world’s fastest growing industries.

“We welcome back Claymore and are excited to begin trading options on Claymore/MAC Global Solar Energy Index ETF, the first solar energy ETF,” said Lisa Dallmer, Senior Vice President, ETFs and Indexes. “The combination of listing and trading the ETF and options on TAN is an excellent example of NYSE Euronext’s unique value proposition and our leadership as the world’s first global multi-product exchange group.”

“Today’s listing further demonstrates our commitment to our issuers by offering them the opportunity to conveniently list both of their investment products under NYSE Euronext banner, through NYSE Arca,” said Ed Boyle, Senior Vice President, NYSE Arca Options. “We are proud to provide issuers like Claymore with the ability to reach the broadest range of investors around the world.”

The Claymore/MAC Global Solar Energy Index ETF has an average daily trading volume of 536,494 shares with $42,726,460 million assets under management in only its first week of trading. NYSE Arca’s markets share of trading in TAN since listing is 82.3%.

For more information on NYSE Euronext products and services, please visit: http://www.nyse.com

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. Its family of exchanges, located in six countries, include the New York Stock Exchange, the world's largest cash equities market; Euronext, the Eurozone's largest cash equities market; Liffe, Europe's leading derivatives exchange by value of trading; and NYSE Arca Options, one of the fastest growing U.S. options trading platforms. 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 $27.3 / €17.3 trillion in total global market capitalization (as of March 31, 2008), more than four times that of any other exchange group. NYSE Euronext's equity exchanges transact an average daily trading value of approximately $169.6 / €113.2 billion (as of March 31, 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 2006 ("document de référence") filed with the French Autorité des Marchés Financiers (Registered on June 6, 2007 under No. R.07-0089), 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.

Contacts NYSE EuronextStephanie Scotto, 212-656-4896sscotto@nyx.com