CubeSmart is one of the top three US self-storage operators, owning or managing nearly 1,600 stores with roughly 110 million net rentable square feet, about one-third the size of Public Storage or Extra Space Storage. Profit comes mainly from month-to-month rent at its 662 owned stores, supplemented by tenant insurance and other property income, along with third-party management fees. Because the core product is largely commoditized, CubeSmart competes on location, pricing, and cost control.