Microsoft Co-founder Bill Gates has regained the world's second-richest person spot with $106 billion wealth, as per Bloomberg Billionaires Index. This comes days after French luxury goods tycoon Bernard Arnault's wealth surpassed Gates' wealth. Arnault, who derives most of his wealth from his holdings in Louis Vuitton owner LVMH, is now the world's third-richest person with $97.8 billion wealth.