NASDAQ to Host Analyst & Press Calls Following Announcement of Proposed Combination With OMX

ADVISORY, May 25, 2007 (PRIME NEWSWIRE) --

Who: Bob Greifeld, President and Chief Executive Officer, The Nasdaq Stock Market, Inc. (Nasdaq:NDAQ) and; Magnus Bocker, Chief Executive Officer of OMX AB (OMX) What: To discuss today's deal announcement and the outlook for the combined exchange. When: Friday, May 25th 8:00 a.m. ET -- Analyst/Investor Call 9:00 a.m. ET -- Press Conference Call Where: Via Teleconference Dial-in Details for Analyst/Investor Call: Title: NASDAQ Conference Call Start Time: 8:00 am ET / 7:00 am CT / 6:00 am MT / 5:00 a.m. PT Domestic dial-in: (866) 765-6327 International dial-in: (913) 312-6621 Dial-in Details for Press Call: Title: NASDAQ Conference Call Start Time: 9:00 am ET / 8:00 am CT / 7:00 am MT / 6:00 a.m. PT Domestic dial-in: (800) 810-0924 International dial-in: (913) 981-4900 Analyst Call Replay: A replay of the analyst call will be available from 11:00 AM ET through midnight Monday, May 28th. Replay telephone numbers: (719) 457-0820 or (888) 203-1112 Replay Passcode: 8639449 Press Call Replay: A replay of the press call will be available from 12:00 noon ET through midnight Monday, May 28th. Replay telephone numbers: (719) 457-0820 or (888) 203-1112 Replay Passcode: 1034899 Webcast link: All participants can access the analyst and press conference via Internet web cast through the NASDAQ Investor Relations website at http://ir.nasdaq.com/.

NASDAQ is the largest U.S. electronic equities exchange. With approximately 3,200 companies, it lists more companies and, on average, trades more shares per day than any other U.S. electronic market. It 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 as well as a leading liquidity pool for trading NYSE-listed stocks. For more information about NASDAQ, visit the NASDAQ Web site at www.nasdaq.com or the NASDAQ Newsroom at www.nasdaq.com/newsroom/.

CONTACT: NASDAQ Media Contact: Silvia Davi 646-441-5014 Silvia.davi@nasdaq.com Investor Contact: Timothi Trombetta 212-401-8761 Timothi.trombetta@nasdaq.com