AppNexus has banned right-wing publisher Breitbart from selling on its exchange for violating its policy on hate speech – an order endorsed by CEO Brian O’Kelley, and depending on who you ask, also ...

AT&T said Monday it will acquire AppNexus for its advertising and analytics unit, which is headed up by former GroupM chief (and ex-AppNexus board member) Brian Lesser. The acquisition is expected to ...

To keep up with Facebook and Google in digital advertising, you have to break out the checkbook. And with a combined $200 million spent this year in acquisitions, AppNexus is doing just that. With a ...

Since being founded in 2007, ad tech firm AppNexus has become one of the major players in the programmatic advertising space. Yet operationally, it’s a similar company to the one it was seven years ...

New York City-based ad tech firm AppNexus has received $60 million in funding from an unnamed private equity firm. According to the company, the investment puts AppNexus at a valuation of $1.2 billion ...

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How important is Internet advertising? The space was worth over $42 billion last year, and is no doubt rising even higher in 2014. The value of targeting, or getting the right ads, to the right people ...

AppNexus has added a layer to its platform that allows advertisers and agencies -- as well as trading desks, networks and other ad tech companies -- to bring their own algorithms into the fold.

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O'Kelley can be overbearing, and friends say he's mellowed a bit, but people put up with him and invest millions in him because he's arguably the most brilliant software engineer in New York's ...

Alibaba Group Holding Ltd. is one of several companies in talks to invest in New York online-advertising firm AppNexus Inc. as the Chinese e-commerce giant looks for opportunities outside its home ...