Largely thanks to Amazon's stock surge over the last year, in line with the US Stock markets astronomical bull run, Jeff Bezos has seen his net worth shoot up by USD$30 billion to hit USD$95 billion.

The current world's richest person sold a million Amazon.com Inc. shares this week for USD$1.1 billion, about 1.3% of his holdings, reducing his stake to 16.4%.

And what do billionaires do with their billions? Well listen in to and find out.