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aQuantive Rank: 7
Get quote: AQNT
Employees: 1,463
Headquarters: Seattle, WA Sector(s): Business Services
Why It's hot: In just a few years, it's become the No. 2 online ad-industry conglomerate behind Digitas (No. 54). In 2004 it acquired Razorfish, combining it with its Avenue A agency to double sales of marketing services.