Simon Property Group Inc. is a leading publicly-traded real estate investment trust in the United States, which is engaged in acquiring, owning and leasing of shopping, dining, entertainment and mixed-use destinations. The company's real estate portfolio consists of malls, Premium Outlets and The Mills and International Properties. Simon Property owns or holds interests in properties in the United States. This consist of malls, Premium Outlets, Mills, lifestyle centers and other retail properties in the states and Puerto Rico.