ow big is biggest? WPP alone has revenue greater than agencies 8 through 50.
And yet big is getting ever so smaller. In 2010, the four largest holding companies made up 65.4% of the total revenue of the top 50. That’s actually been creeping downward from 69.4% in 2006. But still, big.
But if you want to get into a little more detail, Ad Age’s new 2011 Agency Report digs into the Big Four and the rest to give you an incredibly comprehensive look at how nearly 1,000 agencies stack up — including un-rolling the holding companies and networks.