Vivendi Takes Majority Stake in Havas Group Kristin Brzoznowski June 8, 2017 Top Stories Vivendi has entered into an agreement with the Bolloré Group to purchase a 60 percent majority stake in Havas. The content you are trying to access is only available to members. Log In Register Bolloré Group Vivendi 2017-06-08 Kristin Brzoznowski Share