Los Angeles-based OpenX Technologies Inc., a provider of digital advertising technology, has closed $20 million in Series D funding to bring its total raised to more than $50 million. SAP Ventures led the round with the participation of additional new investors AOL Ventures, Mitsui & Co. Global Investment and Presidio Ventures, the investment vehicle of Sumitomo Corp. Existing investors Accel Partners, Index Ventures and DAG Ventures also participated in the round. As a result of the round, a representative from SAP Ventures will take a seat on the company’s board of directors.