Twitter has acquired mobile advertising exchange company MoPub for $350 million in stock. The terms of the deal was undisclosed, but the amount reported was by sources with AllThingsD. MoPub is Twitter’s largest acquisition thus far. Based on this deal, Twitter’s stock is valued at $20 per share.
The acquisition will enabled Twitter to keep track of its ad inventory in near real-time. Twitter will be able to offer the right ad space at the right time to third party publishers that want to automatically buy ads based on certain conditions.
MoPub’s 90-person staff will be joining Twitter’s ad team in San Francisco.
MoPub was founded by Bryan Atwood, Nafis Jamal, and Jim Payne. The three of them previously worked at Google’s AdMob. MoPub raised around $18.5 million in venture capital funding from Harrison Metal, Jafco Ventures, and Accel Partners.