OpenX Overview

OpenX Overview

Global Leader in Programmatic Advertising

Why We Exist

We create programmatic marketplaces where premium publishers and app developers can best monetize their content by connecting with leading advertisers that value their audiences.


Publisher focused, buyer aligned

Clients work with OpenX because of our commitment to quality, our ability to deliver highly efficient and scalable marketplaces and our superior partner service.


Innovating the future of digital advertising

Investment in high-quality teams and technology enables us to transact ever increasing value for clients as the industry expands to new platforms and screens.


Ranked first in quality worldwide

We are ranked as one of the cleanest supply sources for high-quality inventory in the world across both desktop and mobile app.

Our Mission

Our Mission

We create awesome programmatic marketplaces.

By remaining focused on creating powerful and effective publisher solutions, we have created a highly efficient programmatic platform that provides optimal value for both sides of every transaction.


We believe smart minds are imperative to ad tech and we love working in a team that shares this approach. Meet OpenX’s leadership team and learn about our executives’ impressive backgrounds.
  • The market is changing rapidly and we needed to be ready to engage with buyers across the spectrum. OpenX helped us get there.

    Ben Harman, Director of Advertising Operations, CarGurus

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  • We’ve seen such high CPMs that it’s like Bidder is our 2nd most successful salesperson.

    Martin Calhoun, Director, Digital Advertising Operations and Yield Management, Philadelphia Media Network

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  • We found that OpenX Bidder adds 24% more users and 16% more so-called ‘high-value’ users to what tag-based publishers already provided. Of all users in the ad request sample, one more new user was added for every 24 opportunities to engage with a customer.

    Tanuj Joshi, Vice President, Global Media Partnerships, MediaMath

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How we operate is what makes us so special

We are driven by our commitment to deliver exceptional partner service alongside the industry’s highest quality inventory and best performing programmatic technology.

Founded in 2007

OpenX pioneered the first programmatic RTB exchange, deployed header bidding 18 months before the competition, and was the first to invest materially in traffic quality initiatives.

500 strong and growing

People are our core asset. Our number one goal is to create an environment where people can do the best work of their careers alongside some of the brightest minds in ad tech.

Privately owned and operated

Independent companies like OpenX present a vital option for publishers and advertisers looking for high-quality and transparent advertising solutions.

Industry recognized growth and success

OpenX is ranked on the Deloitte Fast 500 and the Inc. 5000 for our tremendous growth and success, and our recognition doesn’t stop there. We’ve also been recognized both locally and nationally as a successful and fast growing business, and one of the best places to work in technology.

Our Locations

We operate eight offices worldwide, including four in California — Pasadena (HQ), Culver City, Santa Clara, San Francisco — as well as locations in New York, London, Munich and Tokyo.

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The values that define us

Our company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

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Industry Recognition

Our Investors and Supporters

OpenX is supported by leading investors, including Accel Partners, Index Ventures, SAP Ventures and Samsung Venture Investment Corporation.