Google, Facebook, Twitter and Pandora Combine for 90% of Mobile Ad Revenue

Google is the world's largest mobile advertising company. However after Google there are only a few big players on a US or global basis. Google doesn't disclose mobile revenues as a separate line item.

According to the IAB, US mobile ad revenues in the first half of 2013 were roughly $3 billion. That means we can probably expect between $6.5 and $6.8 billion for the full year 2013. 

Online just 10 companies accounted for 70% of total online ad revenue in Q2 2013. In mobile, ad revenues are even more concentrated in a smaller group of companies. 

IAB IH numbers

Google's mobile revenues are probably, conservatively, in the range of 15% of its total ad revenue, which will come in around $49 or $50 billion globally for the full year. Let's also assume that roughly 50% of Google's mobile revenue comes from the US market. That would all mean Google would have about $3.6 billion in US mobile ad revenue this year. It could be more, however. 

Facebook, Twitter and Pandora all report the portion of their advertising revenue that is generated from mobile devices. Facebook has by far the most mobile ad revenue of the group, which is likely to come in a little over $3 billion for the year. Twitter has said that 70% of its revenue is coming from mobile -- and most of that is from the US market. 

The mobile component of total ad revenue for Facebook, Twitter and Pandora collectively will be roughly $4 billion for calendar 2013. It's not clear what percentage of Facebook's mobile ad revenue is from the US; however it's likely to be a substantial portion at this stage. 

Accordingly, putting together my estimates for US mobile ad revenues from Google, Facebook, Twitter and Pandora takes us to about 90% of projected US mobile ad revenue for the year. Ad networks such as YP, Millennial and a couple of others fill in the rest.