Bernard Arnault lost his spot as the world’s second-richest person as a selloff in luxury stocks pushed his net worth below that of Amazon.com Inc.’s Jeff Bezos. Arnault is now worth $155.1 billion, just below Bezos’s $156.3 billion, according to the Bloomberg Billionaires Index. Elon Musk is still number one on the list. He's worth $233.8 billion. Alix Steel and Guy Johnson discuss. (Corrects to say Bezos is not world's richest person)