Public Storage (PSA), an esteemed Real Estate Investment Trust (REIT) and a constituent of both the S&P 500 and FT Global 500 indices, concentrates its operations on the acquisition, development, ownership, and management of self-storage properties. By September 30, 2020, the company's substantial holdings included 2,504 self-storage facilities located across 38 U.S. states, collectively providing around 171 million net rentable square feet. Additionally, Public Storage held an approximate 35% common equity interest in Shurgard Self Storage SA (Euronext Brussels:SHUR), an entity that owned and operated 239 self-storage sites under the Shurgard brand in seven Western European countries, encompassing approximately 13 million net rentable square feet. Concurrently, it maintained an approximate 42% common equity interest in PS Business Parks, Inc. (NYSE:PSB), which, as of the same reporting date, managed roughly 28 million rentable square feet of commercial properties. The company's main office is situated in Glendale, California.