NASDAQ OMX Group (NDAQ)

Additional Information About the NASDAQ/OMX Transaction

On August 7, 2007, NASDAQ filed with the SEC a Registration Statement on Form S-4 that includes a preliminary proxy statement of NASDAQ that also constitutes a prospectus of NASDAQ. On October 12, 2007, NASDAQ filed with the SEC a preliminary proxy statement on Schedule 14A relating to the proposed transactions with Borse Dubai and OMX. Investors and security holders are urged to read the preliminary proxy statements, prospectus and the definitive proxy statement when it becomes available, as well as any amendments and other applicable documents regarding the proposed business combination because those documents contain, or will contain, important information. You may obtain a free copy of those documents and other related documents filed by NASDAQ with the SEC at the SEC’s website at www.sec.gov. The preliminary proxy statements and prospectus and the other documents may also be obtained for free by accessing NASDAQ’s website at http://www.nasdaq.com.

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NASDAQ and its directors and executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies from NASDAQ stockholders in respect of the transactions described in this communication. You can find information about NASDAQ’s executive officers and directors in NASDAQ’s definitive proxy statement filed with the SEC on April 20, 2007. You can obtain free copies of these documents and of the preliminary proxy statements and prospectus from NASDAQ by accessing NASDAQ’s website at http://www.nasdaq.com. Additional information regarding the interests of such potential participants is included in the preliminary proxy statements and prospectus and may be included in the other relevant documents filed with the SEC when they become available.

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Additional Information About the Nasdaq/OMX Transaction

In connection with the proposed business combination transaction, OMX and NASDAQ expect that NASDAQ will file with the SEC a Registration Statement on Form S-4 that will include a proxy statement of NASDAQ that also constitutes a prospectus of NASDAQ. Investors and security holders are urged to read the proxy statement/prospectus and any amendments and other applicable documents regarding the proposed business combination transaction if and when they become available because they will contain important information. You may obtain a free copy of those documents (if and when available) and other related documents filed by NASDAQ with the SEC at the SEC’s website at www.sec.gov. The proxy statement/prospectus (if and when it becomes available) and the other documents may also be obtained for free by accessing NASDAQ’s website at http://www.nasdaq.com and OMX’s website at http://www.omxgroup.com.

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