News Releases

 
NYSE Arca Tech 100 Index® Announces Change to Index Components
NEW YORK – May 31, 2007 – The NYSE Group Inc., today announced a change to the NYSE Arca Tech 100 Index as a result of pending corporate actions.  All changes to the index are effective as of the primary market close on June 4, 2007.

Leaving the index will be the following:
MedImmune, Inc.            (MEDI)

New constituents added to the Index:
ViroPharma Inc.              (VPHM)

A link to the Index guidelines:  http://www.nyse.com/pdfs/NYSEArcaTech100IndexGuidelines.pdf

A link to the Index returns & data subscription:  http://www.nyse.com/marketinfo/indexes/pse_resources.shtml

About NYSE Arca Tech 100 Index®
The NYSE Arca Tech Index® has been in existence since 1982, and is commonly referenced as a benchmark for the U.S. tech sector. This price weighted index is comprised of 100 listed and over-the-counter securities.   Companies from different industries that produce or deploy innovative technologies to conduct their business are considered for inclusion. Leading companies are selected from several industries, including computer hardware, software, semiconductors, telecommunications, data storage and processing, electronics and biotechnology. Modeled as a multi-industry technology index, the objective of the NYSE Arca Tech 100 Index is to provide a benchmark for measuring the performance of companies using technology innovation across a broad spectrum of industries.

The index is licensed to the NYSE Arca Tech 100 ETF, a series of the Ziegler Exchange Traded Trust, and is listed on NYSE Arca for trading.  Information about the ETF can be found here:  www.NXT100.com

More information about the index can be found: www.nyse.com/tech100index

###

About NYSE Euronext
NYSE Euronext, a holding company created by the combination of NYSE Group, Inc. and Euronext N.V., commenced trading on April 4, 2007 . NYSE Euronext (NYSE Euronext: NYX) operates the world’s largest and most liquid exchange group and offers the most diverse array of financial products and services. NYSE Euronext, which brings together six cash equities exchanges in five countries and six derivatives exchanges in six countries, is a world leader for listings, trading in cash equities, equity and interest rate derivatives, bonds and the distribution of market data. Representing a combined €21.7/$29.6 trillion total market capitalization of listed companies and average daily trading value of approximately €85/$115 billion (as of April 30, 2007), NYSE Euronext seeks to provide the highest standards of market quality and integrity, innovative products and services to investors, issuers, and all users of its markets.

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 Registration Statement (document de base) filed with the French Autorité des Marchés Financiers (Registered on November 30, 2006 under No. 06-0184), 2006 Annual Report on Form 10-K, as amended, 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.



Contact: Stephanie Scotto
Phone: 212.656.4896
Email:  sscotto@nyse.com