Of the 50 richest people in the world, most built their wealth up from nothing, creating some of the most powerful companies out there — including Amazon, Berkshire Hathaway, Nike, and Google — along the way.

The 25 richest self-made billionaires on earth have accrued more than $850 billion combined, each with a personal net worth of at least $18 billion.

This comes from new data provided to Business Insider by Wealth-X, which conducts research on the super-wealthy, as featured in our recent list of the richest people on earth. Wealth-X maintains a database of dossiers on read more >>>

Source : BusinessInsider.Com