OpenX logo — The most innovative independent supply-side platform.

OpenX

The most innovative independent supply-side platform.

Founded 2007 United States Pasadena, United States 445 employees Secondary Market Total: $70.51M Advertising, Enterprise Software +2

General Information

Company Name OpenX
Founded Year 2007
Location United States Pasadena, United States +7
Employees 445
Industries Advertising, Enterprise Software, Internet +1
Funding Stage Secondary Market
Social

Get notified when OpenX moves

Funding, new markets, leadership changes, hiring surges — one e-mail, only when something happens.

Free · no account needed

About OpenX

OpenX is an innovative independent supply-side platform that aims to revolutionize the ad selling and buying experience. Founded in 2007 and based in the United States, the company addresses the demand for addressability, transparency, and sustainability in the advertising, enterprise software, and internet industries. Its slogan, "The most innovative independent supply-side platform," reflects its commitment to excellence in the field. The company's most recent investment was in the secondary market, which took place on 01 June 2015. The investor involved in this round was SharesPost Investment Management. This investment signifies the confidence that investors have in OpenX's vision and potential for growth in the dynamic digital advertising market. With its strong focus on innovation and customer satisfaction, OpenX continues to be a key player in the evolving ad tech landscape.

Taxonomy: advertising technology, supply-side platform, programmatic advertising, digital advertising, ad selling, ad buying, demand addressability

Funding Rounds & Investors (7)

View All
Funding Stage Amount Investors Lead Investors Date
Secondary Market •••••• 1
Investor
01 Jun 2015
Venture Round •••••• 1
Investor
01 Nov 2014
Series E •••••• 6
Investor Investor Investor Investor Investor
•••• ••••
17 Jan 2013
Series D •••••• 7
Investor Investor Investor Investor Investor Investor Investor
31 May 2011
Series C •••••• 5
Investor Investor Investor Investor
•••• ••••
26 May 2009

View All 7 Funding Rounds

OpenX Alternatives & Competitors

OpenX vs
Demand Local
Demand Local United States

Empowering Marketing Agencies & Automotive Advertisers to Scale and Grow their Businesses.

29 employees
Advertising, Marketing
OpenX vs
Verve
Verve United States

Let's make media better.

Debt Financing
510 employees
Advertising, Digital Media
OpenX vs
AdElement
AdElement United States

Connecting brands to screens of the future. An Inc. 5000 company.

32 employees
Advertising, Internet

FAQ About OpenX

The most innovative independent supply-side platform.
OpenX was founded in 2007.
OpenX is headquartered in Pasadena, United States.
OpenX operates in the following industries: Advertising, Enterprise Software, Internet, Platforms.
OpenX has approximately 445 employees.
OpenX has completed 7 funding rounds, raising a total of $70.51M. The latest funding stage is Secondary Market.
Top alternatives and competitors to OpenX include Demand Local, Verve, AdElement, Sojern, Adnuntius. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
OpenX and Demand Local are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Don't just browse. Track.

Signal Tracker monitors OpenX and millions of companies for funding rounds, hiring surges, product changes, and 40+ signal types — so you never miss an opportunity.

One analytics cookie (Google Analytics). Cookie Policy

Book a demo 30 minutes