NASDAQ And Philadelphia Stock Exchange To Host Investor And Media Conference Calls & Webcast Today At 8:30 A.M. For Analysts And Investors And 10:00 A.M. For Press

NASDAQ will host analyst/investor and media briefings via teleconference today regarding the announcement that it has entered into a definitive agreement to acquire the Philadelphia Stock Exchange . Senior management will be available for questions following brief remarks on each teleconference. Details are as follows:

Who:

Robert Greifeld, President & Chief Executive Officer
David Warren, Chief Financial Officer
Chris Concannon, EVP of Transaction Services
Sandy Frucher, Chairman and CEO of the Philadelphia Stock Exchange

When:

November 7, 2007 at 8:30 A.M. (investor/analyst)
November 7, 2007 at 10:00 A.M. (media)

Where:

Via teleconference

Analyst/investor teleconference dial-in:

Title: NASDAQ Conference Call
Start Time: 8:30 A.M. ET
Domestic dial-in: (866) 765-6327
International dial-in: (913) 312-6621

All participants can access the conference via Internet webcast through the NASDAQ Investor Relations website at http://ir.nasdaq.com/.

An audio replay of the conference will be available on the NASDAQ Investor Relations website at http://ir.nasdaq.com/ or by dialing (888) 203-1112 (U.S.) or (719) 457-0820 (International) and the replay pass code 3536324.

Media teleconference dial-in:

Title: NASDAQ Conference Call
Start Time: 10:00 A.M. ET
Domestic dial-in: (888) 661-5140
International dial-in: (913) 312-0637

About NASDAQ
NASDAQ is the largest U.S. electronic stock market. With approximately 3,100 companies, it lists more companies and, on average, its systems trade more shares per day than any other U.S. market. NASDAQ is home to companies that are leaders across all areas of business including technology, retail, communications, financial services, transportation, media and biotechnology. NASDAQ is the primary market for trading NASDAQ-listed stocks. For more information about NASDAQ, visit the NASDAQ Web site at http://www.nasdaq.com or the NASDAQ Newsroom at http://www.nasdaq.com/newsroom/.

About Philadelphia Stock Exchange
The Philadelphia Stock Exchange was founded in 1790. The PHLX trades more than 7,000 stocks, 2,520 equity options, 19 sectors index options, options on all major currencies, and futures through its subsidiary, The Philadelphia Board of Trade (PBOT). For more information about the PHLX and its products, visit www.phlx.com.