Where the World's Richest Invest Their Many Billions

Being part of the global billionaire class is beyond the imagination of most people. At the threshold of $1 billion, a 5 percent return would yield an annual interest payment of $50 million — without ever touching the principal. But how billionaires, from those in the single digits to near the top, invest shows a range of options for the very wealthiest in the world. One thing they all have in common is a large amount of money in cash or equivalently liquid securities. Here's a look at how 10 billionaires have made and invested their money, according to public filings gathered by the financial research firm Wealth-X.