Robert Addison Day

CATEGORY: Philanthropists

INDUSTRY: Investment Banking

COMPANY: William M. Keck Foundation/Trust Company of the West

WHAT MAKES HIM HAUTE: The billionaire grandson of Superior Oil Co. founder William M. Keck oversees the $1.3 billion non-profit W.M. Keck Foundation, which focuses on science and engineering research, medical research, undergraduate education, and Southern California.