• by Mark Walsh  @markfwal, April 4, 2013

Mobile ad network Jumptap said Thursday that its U.S. monthly reach had grown 28% to 171 million since quietly launching a real-time bidding (RTB) platform last fall.Globally, it reaches 269 million mobile users a month

The company noted that the RTB system already handles more than half of Jumptap’s total ad requests and has increased its total ad requests to more than two billion per day. The platform ties directly into partner exchanges from Burstly, Mobclix, MoPub, Nexage and Smaato, among others, to source inventory in real-time.

Jumptap CEO George Bell said last fall the company is considering an initial public offering or selling itself to gain a larger share of the fast-growing mobile ad market. In late February, it hired Brian Cohen as its new chief financial officer and Lewis Rothkopf as SVP, partnerships network development and publisher acquisition.