Apple to End Year With 21% of Mobile Ad Market?

Google, Microsoft, and Yahoo! are losing share of the U.S. mobile advertising market to Apple, according to a Bloomberg report.

Apple will end the year with 21 percent of the market, according to estimates provided to Businessweek.com by researcher IDC. Google's share will drop to 21 percent, from 27 percent last year, when combined with results from AdMob, the ad network it bought in May. Microsoft will drop to 7 percent, from 10 percent.

Google says that its mobile-ad sales are experiencing fast growth but IDC's data suggests that the market's growth is even faster.


"If we are losing share, this market is growing faster than any one we've seen," said Jason Spero, director of mobile for the Americas at Mountain View (Calif.)-based Google.

Fortune has published a pie chart showing IDC's predictions of market share for the end of 2010. You can find it below...

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