- Bernard Arnault's net worth has soared by about $30 billion this week to $207 billion.
- The LVMH CEO leapfrogged Mark Zuckerberg to become the world's third-richest person.
- Its stock has surged on the back of China's stimulus plans and LVMH's new bet on Moncler.
Bernard Arnault got about $30 billion richer this week — and zoomed past Mark Zuckerberg to become the world's third-richest person.