Chairman and CEO, LVMH
Arnault's luxury empire includes more than 60 prestige brands (Louis Vuitton, Veuve Cliquot, EmilioPucci), more than 3,000 retail locations, and some 100,000 employees worldwide. But the savvy (and sartorially impeccable) CEO is always on the lookout for more deals. This year, LVMH ( raised its ownership stake in family-controlled Hermes to 22%, prompting Hermes to file a criminal complaint claiming LVMH was engaged in stealth stake building. Arnault's response: The company released a statement saying, "LVMH Group has had no choice but to file a suit for slander, blackmail and unfair competition." )
--Stephanie N. Mehta
He's a pro-customer, tightfisted risk-taker who is conditioning Wall Street to embrace his erratic earnings. If you're running a business with high margins - watch out.