9. Hedge Fund Manager
BloombergCase Study: Steve Cohen
Country of Citizenship: USA
Net Worth: $13 billion (£10.4 billion)
The stock market is an important part of the economy, and it can also be an important source of income – especially if you’re someone like Steve Cohen. He attended Wharton School where he obtained a degree in economics, before landing a job on Wall Street in 1978, where he eventually managed a $75 million portfolio and 6 traders. Cohen later went on to found Point72 Asset Management and S.A.C. Capital Advisors.