#8. Michael Bloomberg
Is an incredible American business genius, an independent politician, and an active philanthropist. Bloomberg worked his way up from the bottom at the Solomon Brothers to head of the equity trading and sales, but was let go for a mere $10 million severance pay. But in 1981 he became the owner and CEO of his own company, Bloomberg LP, which he invested $4 million of his own money to start. Mr. Bloomberg also served as the 108th Mayor to New York City for 4 terms and now has a net worth of $49 billion.