American Assets Trust, Inc. is a real estate investment trust. It owns, operates, acquires, and develops retail shopping centers; office properties; mixed-use properties; and multifamily properties. The company operates through the following business segments: Retail, Office, Multifamily and Mixed-Use. The Retail segment includes rental of retail space. The Office segment includes rental of office space. The Multifamily segment includes rental of apartments. The Mixed-Use segment includes rental of retail space and other tenant services. American Assets Trust was founded on July 16, 2010 and is headquartered in San Diego, CA.