Shareholders of aQuantive approved the buyout by Microsoft at an 86 percent premium in a meeting in Seattle Thursday. The purchase is expected to close within days.

More than 58 million shares voted to approve the buyout, out of about 79 million share outstanding. The meeting lasted about six minutes and drew about 20 people, according to Seattle Post-Intelligencer blogger Todd Bishop.

Microsoft will pay $66.5 per share to aQuantive, making it the largest deal in Microsoft's history. Meanwhile, aQuantive will remain its Seattle headquarter, operating as part of Microsoft's Online Services Business, Bishop reported.

aQuantive, founded in 1997, is the parent company of online ad agency Avenue A|Razorfish, online ad-serving unit Atlas and advertising network DRIVEpm.