The billionaire pet projects go head to head.
The Amazon founder and CEO made a cheeky $4.9 billion this afternoon.
The wealth increase was the single largest ever recorded by the Billionaires Index.
And his wealth is only set to increase.
Welcome to the 13-figure club.
The controversial billionaire added substantially to his personal fortune.
The reported sale price is a new record for the Los Angeles area.
At the moment, Bill Gates is a very, very close second.
Because of a drop in Amazon stock, Bezos lost his hold on the title for just short of 24 hours.