6) Charles Koch:
He has made it to the top 10 list, overtaking the likes of Eike Batista, Stefan Persson and Karl Albrecht. His net worth is $34 billion. He and his brother David hold 80 percent of Koch Industries.
Charles Koch
7) David Koch:
His net worth is $34 billion. He and his brother Charles 80 percent of Koch Industries. The Koch brothers' net worth was up by...