Billionaires 7 years ago:
https://web.archive.org/web/20171004002738/https://www.bloomberg.com/billionaires/
Billionaires today:
Billionaires 7 years ago:
https://web.archive.org/web/20171004002738/https://www.bloomberg.com/billionaires/
Billionaires today:
He buys existing successful businesses (at the time,) then manipulates their stock price from Twitter.