NYSE Group Executive Vice President Mike Cormack Will Become Senior Consultant To The Company In Early 2007 - NYSE Arca’s Paul Adcock To Assume Day-to-Day Responsibilities

NYSE Group, Inc. (NYSE: NYX) today announced that Mike Cormack, Executive Vice President for electronic trading and new products, will be stepping down from his current position to become a senior consultant to the company in early 2007.  Mr. Cormack and his family plan to relocate to Vancouver , British Columbia , Canada .  His day-to-day responsibilities will be assumed by Senior Vice President Paul Adcock, who will become Executive Vice President, Operations, NYSE Arca.

Mr. Cormack, who joined the former Archipelago Holdings, Inc. in Jan. 2000, is responsible for the NYSE Arca trading operations and new product development.  He also oversees related strategic planning and acquisitions, such as the recent Matchpoint Trading, Inc. and Marco Polo Network transactions.

“Mike is a valued business partner, great friend, and someone who has made significant contributions to the growth of Archipelago and to the success of the merger with the New York Stock Exchange,” said Jerry Putnam, President and co-Chief Operating Officer, NYSE Group.  “Mike told me several months ago of his plans to make a career and life transition.  Mike has earned the respect of colleagues, customers and competitors.  On behalf of everyone at NYSE Group, I want to thank Mike, wish him and his family well in the move, and look forward to continuing to work with him in his consulting role with us.”

“My family and I are looking forward to the move to Vancouver and to spending more quality time together,” Mr. Cormack said.  “It’s difficult to think of leaving my day-to-day responsibilities with NYSE Group and so many good friends, colleagues and customers, but this is best for my family and for me.  In the months ahead, I’ll ensure a successful transition and prepare for my ongoing role as a consultant.

“The Archipelago experience was incredible and NYSE Group has an exciting future,” Mr. Cormack said.  “I’m grateful to have had the opportunity to contribute to two great organizations and to be in a role that allows me to contribute moving forward.”

Mr. Cormack joined Archipelago as National Sales Manager and was appointed President of the Archipelago Exchange (ArcaEx) in August 2000. Mr. Cormack oversaw client relation, sales, trading support, and strategic initiatives. He joined Archipelago from American Century Investments where he was manager of Equity Trading.  Mr. Cormack holds a bachelor’s degree in economics from The Johns Hopkins University.

Mr. Adcock, one of the original Archipelago employees, currently manages NYSE Arca trade support efforts for equities, options and OTCBB.  He has extensive client interaction for matters involving new systems functionality, rules, trading activity and order routing, and market structure changes. 

About NYSE Group, Inc.
NYSE Group, Inc. (NYSE:NYX) operates two securities exchanges: the New York Stock Exchange (the “NYSE”) and NYSE Arca (formerly known as the Archipelago Exchange, or ArcaEx®, and the Pacific Exchange).  NYSE Group is a leading provider of securities listing, trading and market data products and services. The NYSE is the world’s largest and most liquid cash equities exchange. The NYSE provides a reliable, orderly, liquid and efficient marketplace where investors buy and sell listed companies’ common stock and other securities. On June 30, 2006 , our listed operating companies represent a total global market capitalization of over $ 22.6 trillion. In the second quarter 2006, on an average trading day, almost 1.8 billion shares, valued at over $68.5 billion, were traded on the NYSE.

NYSE Arca operates the first open, all-electronic stock exchange in the United States and has a leading position in trading exchange-traded funds and exchange-listed securities. NYSE Arca is also an exchange for trading equity options. NYSE Arca’s trading platform provides customers with fast electronic execution and open, direct and anonymous market access.

NYSE Regulation, an independent not-for-profit subsidiary, regulates member organizations through the enforcement of marketplace rules and federal securities laws. NYSE Regulation also ensures that companies listed on the NYSE and NYSE Arca meet their financial and corporate governance listing standards.

For more information on NYSE Group, go to: www.nyse.com. Information contained on our website does not constitute a part of the prospectus relating to the proposed offering.

Cautionary Note Regarding Forward-Looking Statements
Certain statements in this article may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on NYSE Group’s current expectations and involve risks and uncertainties that could cause NYSE Group’s actual results to differ materially from those set forth in the statements. There can be no assurance that such expectations will prove to be correct. Actual results may differ materially from those expressed or implied in the forward-looking statements. Factors that could cause NYSE Group’s results to differ materially from current expectations include, but are not limited to:  NYSE Group’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 Group’s Annual Report on Form 10-K and other periodic reports filed with the U.S. Securities and Exchange Commission. 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 Group that the projections will prove to be correct. We undertake no obligation to release any revisions to any forward-looking statements.