The world's richest 1% who have made (at least part of) their fortunes from activities related to the financial sector Warren Buffett

Wealth in 2013: $53.5bn Wealth in 2014: $58.2bn Increase in wealth: 9%

He says: "Rule number one: never lose money; rule number two: don't forget rule number one."

Known as the Sage of Omaha for his innate investment intelligence, the US business magnate is the chairman, CEO and major shareholder of multinational conglomerate Berkshire Hathaway.

Despite his immense riches, the 84-year-old is known for living frugally day-to-day and and is keen philanthropist

Reuters