With its 60 brands such as Louis Vuitton, Dior and Bulgari, LVMH is the world’s largest luxury group and belongs in every better financial portfolio. The debate has become all the more heated since the most recent annual meeting, at which Bernard Arnault organized a premiere: the 77-year-old founder and head of the luxury empire invited his children for the first time to present their respective divisions to the shareholders. It’s remarkable: all five offspring work for LVMH. Jean, Benjamin at 27, introduced the Louis Vuitton watches, of which he is brand director; Frédéric, 30, praised the Italian cashmere brand Loro Piana, which he runs from Paris, and Alexandre, 33, the American jewelry maker Tiffany.