10 richest people on the planet
7. David Koch
David Koch is the executive vice president of Koch Industries , one of the largest closely held companies in the world. The Wichita, Kansas-based firm operates in various industries including oil refining, pipelines, commodities trading, ranching and paper pulp, and has annual sales of $115 billion. He owns 42 percent of the company. Koch, the second-richest resident of New York City, is a major patron of the arts.
Did you know?
Eighty-seven percent of David Koch's political contributions in 2012 went to Republicans. His investments generally do better.