Apartment Income REIT is a self-administered and self-managed real estate investment trust. Co. owns, through its wholly-owned subsidiaries, all of the common equity, the general partner interest, and special limited partner interest in its operating partnership, Apartment Income REIT, L.P. (AIR Operating Partnership). AIR Operating Partnership conducts all of the business of Co., which is focused on the ownership of stabilized multi-family properties located in primary markets including the following geographic concentrations: Boston; Philadelphia; Greater Washington, D.C.; Miami; Denver; the San Francisco Bay Area; Los Angeles; and San Diego.