In partnership with OpenX, CCI operates the exchange as OpenX Market Japan, which offers bidding on adverts.

OpenX Software, a US-based provider of digital and mobile advertising revenue products and services, has raised about $5m of additional financing in its series E round with funding from new investor Cyber Communications (CCI), a Japan-based subsidiary of advertising group Dentsu.

The investment brings the total investment in OpenX to more than $75m. In January, OpenX raised $22.5m in its E round, to take its aggregate total then to more than $70m, from a consortium led by South Korea-based electronics…