With a market cap of $51.7 billion, Public Storage (PSA) is the largest owner and operator of self-storage facilities. Structured as a REIT, the company acquires, develops, owns, and operates storage properties that provide month-to-month leasing options for personal and business use.
Companies valued at more than $10 billion are generally considered “large-cap” stocks, and Public Storage fits this criterion perfectly. As of June 30, 2025, Public Storage managed 3,432 facilities across 40 states, along with a 35% equity interest in Shurgard Self Storage Limited, which operates 321 facilities in Western Europe.
