Public Storage, a prominent real estate investment trust (REIT) recognized on both the S&P 500 and FT Global 500 indices, primarily focuses on the acquisition, development, ownership, and management of self-storage properties. As of September 30, 2020, its extensive portfolio encompassed: (i) direct ownership of 2,504 self-storage facilities across 38 U. S. states, collectively offering approximately 171 million net rentable square feet; (ii) an approximate 35% common equity stake in Shurgard Self Storage SA (Euronext Brussels:SHUR), which operated 239 self-storage locations under the "Shurgard" brand in seven Western European countries, totaling around 13 million net rentable square feet; and (iii) an approximately 42% common equity interest in PS Business Parks, Inc. (NYSE:PSB), which managed about 28 million rentable square feet of commercial properties.