Lagardere Groupe is a holding company. Through its subsidiaries, Co. is engaged in the media industry (news, education, culture and entertainment businesses). Co.'s main activities in the media industry can be divided into four separate divisions. Lagardere Publishing includes Co.'s Book Publishing and e-Publishing businesses. Lagardere Active encompasses Co.'s Magazine Publishing, Audiovisual (Radio, Television, Audiovisual Production), Digital and Advertising Sales Brokerage businesses. Lagardere Services encompasses the Travel Retail and Distribution businesses. Lagardere Unlimited specializes in sports and entertainment.

LISI manufactures multifunctional fasteners and assembly and structural components for three business sectors: aerospace, automotive, and perfurmery. Co.'s activities are also split into three divisions: LISI Aerospace division, LISI Medical division and LISI Automotive division. LISI Aerospace division produces fasteners and assembly components for the aerospace and motor racing markets. LISI Medical division produces medical implants and is a sub-contractor of auxiliary parts. LISI Automotive division produces automotive fasteners and assembly components.

Mediawan was incorporated as a Special Purpose Acquisition Company for the purpose of acquiring one or more operating businesses or companies in the traditional and digital media content and entertainment industries in Europe. Through it's subsidiary, Groupe AB, Co. is an independent publisher, producer and distributor of audiovisual content in French-speaking Europe. Its main activities are producing and distributing TV series, TV films, cartoons and documentaries as well as publishing TV channels and related digital services. The group has a portfolio of 19 channels, which are distributed in French-speaking Europe and Africa.