FTC gives Carl Icahn permission to acquire more Yahoo stockThe Federal Trade Commission says corporate raider Carl Icahn should feel free to buy more large blocks of Yahoo shares. At last count, Icahn already owned 4.3 percent of Yahoo. Shareholders allied with his view on the Microsoft-Yahoo merger — that it should happen — now control at least 31 percent of the company. Too bad for them it seems less likely every day that Microsoft CEO Steve Ballmer — or really, chairman Bill Gates — wants to go back down that road.