OpenX Software, a US-based provider of advertising revenue products and services, has raised $22.5m in its series E round from a consortium led by South Korea-based electronics conglomerate Samsung’s corporate venturing unit as a new investor.

Alongside Samsung Venture Investment Corporation in the round were software provider SAP’s Ventures unit, Presidio Ventures, which invests on behalf of Japan-based conglomerate Sumitomo in the US, financial services company Mitsui’s Global Investment group and venture capital firms Accel Partners and Index Ventures.

Brannon Lacey, principal at Samsung Venture Investment Corporation, said: “OpenX was an early innovator in real-time bidding technology and has been rapidly building a comprehensive, multi-screen ad revenue system that is very well placed to succeed in the global ad market.”

OpenX has raised more than $70m.

In June 2011, SAP Ventures led the $20m series D round in OpenX.

Alongside SAP Ventures in the D round were AOL Ventures, the…

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