National Storage Affiliates Trust (NSA) is a Maryland-based real estate investment trust that concentrates on acquiring, managing, and owning self-storage facilities. Its primary investment strategy targets properties located within the top 100 metropolitan statistical areas across the United States. As of September 30, 2020, the company's portfolio encompassed 788 self-storage properties, spanning 35 states and Puerto Rico, and offering roughly 49.5 million square feet of rentable space.