Oxfam predicted in its new report that the world was on track to see at least five trillionaires within a decade.

Last year marked the second-largest annual increase in billionaire wealth since records started, according to Oxfam.

Kanye West has claimed he's a billionaire once again. See his post and why 'Forbes' doesn't appear to think so just yet.

Musk is the richest person in the world with a net worth of $449 billion, according to the Bloomberg Billionaires Index. He ...