Nasdaq OMX Group Inc.'s Nasdaq Stock Market is providing free real-time stock quotes through its Web site and other outlets, a luxury customers have had to pay for.

The quotes will be provided on General Electric Co.'s CNBC television, Google Inc.'s Google Finance, Xignite and The Wall Street Journal Digital Network, owned by News Corp.

Until now, Nasdaq has been providing quotes on a 15-minute delay.

Under the terms of the initiative, dubbed "Nasdaq Last Sale," the three websites will pay Nasdaq up to $100,000 a month to provide Nasdaq stock quotes to their users. The sites would have to pay up to $50,000 more to quote New York Stock Exchange and American Stock Exchange listed stocks.

BATS Trading Inc., the third largest U.S. equities market, on Wednesday will begin offering real-time stock quotes free of charge to Yahoo Finance's 19 million users in its latest effort to gain market share from the New York Stock Exchange and Nasdaq.