In April 2020, Vivendi bought a 10.6% stake in Lagardère Group, another French media group. The investment was made at the time when Lagardère, the assets of which include the world's third-largest book publisher Hachette, is faced with attacks from a group of fierce and well-funded activist investors, and a year after Vivendi completed its takeover of Editis, the smaller domestic book publisher. By August, Vivendi has doubled its stake in Lagardère to 23.5%, becoming the largest shareholder of the rival group.