David Koch shares control of Koch Industries, the second largest private company in the U.S. Their dad Fred Koch, who improved a method of refining heavy oil into gasoline, started the family business in 1940. Charles took over as chairman and CEO after his death in 1967 and expanded the firm into a $100 billion (sales) conglomerate; David oversees its chemical technology group. The Libertarian Party’s vice-presidential candidate in 1980, Koch has refused to financially support or advocate for either Hillary Clinton or Donald Trump in this year’s presidential race. Instead the brothers’ powerful political fundraising network, which has spent hundreds of millions in past election cycles, is focusing on Senate and House races. A high profile philanthropist, Koch has donated nearly $1 billion through the end of 2015. He held the MIT record for most points scored in a basketball game for 46 years, and graduated the university as its all-time scoring leader.