Photos: Big acquisitions in the tech world In its last big purchase in April 1999, Yahoo bought broadcast.com, the leading video and audio broadcaster at the time, for $5.7 billion in stock. Pictured in front, Yahoo's then President Jeff Mallett, left, and CEO Tim Koogle; in back, Broadcast.Com Inc.'s then president, Mark Cuban and then CEO, Todd Wagner, celebrate the announcement of the acquisition, April 1999. Big acquisitions in the tech world