What is OpenX?
Established in 2007 and headquartered in Pasadena, California, OpenX operates as a sophisticated technology platform specializing in programmatic advertising and real-time bidding. By bridging the gap between publishers and advertisers, the company facilitates automated, high-efficiency ad transactions. Its market position is defined by its robust technical architecture, which enables seamless, data-driven ad delivery across diverse digital channels, effectively serving as a critical utility for modern enterprise-level marketing operations.
How much funding has OpenX raised?
OpenX has raised a total of $80.5M across 6 funding rounds:
Series A
$5M
Series B
$15.5M
Series C
$10M
Series D
$20M
Series E
$25M
Debt
$5M
Series A (2007): $5M with participation from Index Ventures, O'Reilly AlphaTech Ventures, Mangrove Capital Partners, and First Round Capital
Series B (2008): $15.5M led by Mangrove Capital Partners, Accel Partners, First Round Capital, O'Reilly AlphaTech Ventures, and Index Ventures
Series C (2009): $10M supported by DAG Ventures, First Round Capital, Jonathan Miller, Accel, Index Ventures, and Mangrove Capital Partners
Series D (2011): $20M featuring Sapphire Ventures, Aol Ventures, and Mitsui Global Investment
Series E (2012): $25M backed by Presidio Ventures, Mitsui Global Investments, Accel Partners, Samsung Ventures, Cyber Communications, Index Ventures, and SAP Ventures
Debt (2020): $5M with participation from PPP
Key Investors in OpenX
Index Ventures
A global venture firm investing in entrepreneurs from seed to IPO, known for backing transformative companies like Adyen and Datadog.
Accel Partners
A leading venture capital firm with a long-standing history of supporting technology companies through various stages of growth and global expansion.
Mangrove Capital Partners
A contrarian venture capital firm focused on empowering innovative entrepreneurs, with a notable track record of early-stage unicorn investments.
What's next for OpenX?
Looking ahead, OpenX is positioned to leverage its historical capital accumulation to further refine its programmatic capabilities and expand its footprint in the ad-tech sector. The company's trajectory, marked by a series of strategic financing rounds from Series A through Series E and subsequent debt financing, suggests a mature lifecycle stage focused on operational optimization and market dominance. Future initiatives will likely center on enhancing data privacy compliance, integrating advanced machine learning for bid optimization, and maintaining its competitive edge against evolving industry standards in the digital media supply chain.
See full OpenX company page
