‘Unstoppable’ Luxury Stocks Remind Some Investors of U.S. TechPolitics Crashes a $20 Billion Canadian Shopping Trip to ParisBillionaire Arnault Would Take Hit From Sale of Carrefour StakeElite Diamond-Buying Club Shrinks as De Beers Culls Old ClientsTiffany Role Puts Billionaire Arnault’s Son in Luxury Big LeagueVictoria’s Secret Holiday Sales Drop as Bath & Body Works’ JumpLouis Vuitton Manager Ledru and Arnault Son Said to Lead Tiffany