Public Storage owns 3,171 self-storage facilities across 40 U.S. states, with 229 million net rentable square feet of space. People and businesses pay rent every month to store their belongings in these orange-branded buildings. That monthly rent is the engine. The company also earns smaller amounts from tenant insurance, managing facilities for other owners, selling packing supplies, and a newer lending program for third-party storage operators. Because most tenants rent month-to-month and more than half have stayed longer than a year, the revenue stream is sticky and repeats reliably. The diagram below traces where the money goes.

Five years of financial data tell a story of real growth followed by a plateau. Revenue climbed from $3.4 billion in 2021 to $4.8 billion in 2025, a 41% increase over the period. Operating cash flow kept pace, rising from $2.5 billion to $3.2 billion. That is a healthy sign: the business actually converts most of its revenue into cash.

But the pace of growth has slowed sharply. Revenue grew by $0.8 billion between 2021 and 2022. Between 2024 and 2025, it grew by only $0.1 billion. The company's own filings describe softening demand: new tenants are moving in at lower rates, and average occupancy at its established facilities has dipped slightly each year since 2023. The Same Store Facilities, which represent roughly 76% of the portfolio's rentable space, generated nearly flat revenue in both 2024 and 2025 compared to the year before.

While revenue growth has slowed, debt has climbed steadily. Net debt rose from $6.7 billion in 2021 to $9.9 billion in 2025. Much of that borrowing funded acquisitions, including the $2.2 billion purchase of Simply Self Storage in 2023 and 273 additional facilities bought since the start of that year for a combined $3.9 billion. The company is betting that newly acquired locations will fill up over time and generate returns above the cost of the debt used to buy them. So far, the acquired facilities are growing fast, with net operating income from that group up 34% in 2025 versus 2024. But those same acquired facilities are still running at a net loss after depreciation costs are included.

Public Storage's REIT status is central to how it returns cash to shareholders. As long as it qualifies, it pays no federal corporate income tax on most of its earnings. Losing that status, through a violation of complex ownership or distribution rules, would be a significant financial hit. The company states it has met REIT requirements in all periods presented and expects to continue qualifying.

Three specific risks stand out from the company's own filings. First, more than half of new customers arrive through Google search. Google is making it easier for smaller competitors to bid on the same search terms, which could raise the cost of attracting each new tenant or reduce the flow of new customers entirely. Second, California and other states have passed laws capping how much storage companies can raise prices after emergencies like wildfires. Public Storage was fined $140,000 in 2019 for raising prices more than 10% after Northern California wildfires. Similar rules could spread to more states, limiting pricing flexibility right when demand spikes. Third, the company holds a 35% stake in Shurgard Self Storage, which operates 332 facilities across seven Western European countries. Currency swings, local regulations, and limits on moving money out of Europe could reduce the value of that investment and the cash it produces.

Occupancy at the established portfolio has held above 90% throughout this period, which is a sign of durable demand. Storage demand tends to hold up even in weak economies, because people still move, downsize, and need extra space regardless of broader conditions. But the company's own 2026 guidance says it expects Same Store revenue to be modestly below 2025 levels, pointing to continued softness in new-tenant pricing and occupancy.

That gap between new-tenant rates and existing-tenant rates matters a lot. When a new tenant moves in paying $12.80 per square foot annually and the departing tenant was paying $20.30, the facility loses income even if it refills immediately. The company offsets this by raising rates on long-term tenants over time, and that strategy has kept overall realized rent per occupied square foot roughly flat. But if new-tenant rates stay depressed, it becomes harder to grow revenue from the existing portfolio without relying entirely on acquisitions.