Simon Property Group, Inc. operates as a self-administered and self-managed real estate investment trust. It owns, develops and manages retail real estate properties which primarily consist of regional malls, premium outlets and mills. Simon Property Group specializes in the ownership, development, management, leasing, acquisition and expansion of income-producing retail real estate assets. The company was founded by Fred Simon, Herbert Simon and Melvin Simon in December 1993 and is headquartered in Indianapolis, IN.