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UPDATING and REPLACING -- NASDAQ Announces October Market Performance Statistics

Published

NEW YORK, Nov. 21, 2006 (PRIMEZONE) -- The Nasdaq Stock Market, Inc. (Nasdaq:NDAQ) announced its consolidated market performance statistics for the NASDAQ Market Center, INET and Brut trading platforms for the month of October.

NASDAQ continued to capture a greater percentage of market share and share volume in NYSE-listed securities. During October 2006, NASDAQ's average daily total share volume in NYSE-listed securities was approximately 773 million, compared with 732 million in September and 452 million in October 2005. Matched market share in NYSE-listed securities increased to 13.4% in October from 12.9% in September. NASDAQ's touched market share in NYSE-listed securities rose to 30.8% in October from 28.0% in September.

NASDAQ's total market share in NYSE-listed securities in October was 29.5%. Included in the total market share figure for October is 16.0% in NYSE-listed securities executed by broker-dealers and reported to NASDAQ.

The table below shows NASDAQ's market share in several individual NYSE-listed securities during October:

Total Market Share Matched Market Share Time Warner (NYSE: TWX) 36% 23% Southwest Airlines (NYSE: LUV) 37% 19% Citigroup (NYSE: C) 34% 18% Corning (NYSE: GLW) 35% 19% El Paso Corporation (NYSE: EP) 34% 21%

For the month, NASDAQ achieved total market share of over 30% in 121 NYSE-listed companies priced over $10 with average daily trading volume of more than 1 million shares.

To view all 121 NYSE-listed companies, visit http://www.nasdaqtrader.com/trader/tradingservices/marketshare/ccg_oct2006.xls

Total market share in NASDAQ-listed securities was 75.8% in October compared to 76.9% in September. Included in the total market share figure for October is 27.8% in NASDAQ securities executed by broker-dealers and reported to the NASD/NASDAQ Trade Reporting Facility (TRF), a facility of NASD that is operated by NASDAQ, compared to 28.5% in September.

Matched market share in NASDAQ-listed securities in October was 48.0% compared to 48.4% in September. NASDAQ's touched market share in NASDAQ-listed securities in October was 54.2% compared to 55.1% the previous month.

"Total market share" in NASDAQ-listed securities is based on all share volume reported to the consolidated tape using NASDAQ-operated systems. This includes total share volume of NASDAQ-listed securities that are executed on the NASDAQ Stock Market LLC, NASDAQ's recently launched national securities exchange, plus trades reported through the NASD/NASDAQ Trade Reporting Facility (TRF), a facility of NASD that is operated by NASDAQ, as a percentage of total consolidated NASDAQ market volume. Shares routed to other market centers for execution are not included in "total market share". This data is single counted.

"Total market share" in NYSE-listed securities is based on total share volume of NYSE-listed securities that are executed on the NASDAQ Market Center, INET and/or Brut books, plus trade reported volume as a percentage of total consolidated NYSE market volume.

Matched market share represents total share volume of NASDAQ or NYSE-listed securities that are executed on the NASDAQ Market Center, INET or Brut books as a percentage of total consolidated NASDAQ or NYSE market volume.

Touched market share represents total share volume of NASDAQ or NYSE-listed securities that are executed on the NASDAQ Market Center, INET or Brut books plus volume of shares routed to other market centers for execution, as a percentage of consolidated NASDAQ or NYSE market volume.

For more information about these and other NASDAQ market performance statistics, visit www.nasdaqtrader.com/marketshare.

NASDAQ is the largest U.S. electronic stock market. With approximately 3,200 companies, it lists more companies and, on average, trades more shares per day than any other U.S. 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. For more information about NASDAQ, visit the NASDAQ website at http://www.nasdaq.com or the NASDAQ Newsroom at http://www.nasdaq.com/newsroom/.

CONTACT: The Nasdaq Stock Market, Inc. Media Contacts: Wayne Lee (301) 978-4875 Silvia Davi (646) 441-5014

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