Mediaplex rose 5 to 54 Tuesday after the San Francisco-based advertising technology firm said it would open an office in London and an ad server “farm” in Hamburg, Germany to support online advertising campaigns.
The company also said it has signed up 20 new customers for its MOJO technology since the start of the year. The new clients came through such advertising and technology partners as the Interpublic Group, as well as through direct sales.
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