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Top 10 US REIT Companies by Market Cap

The US REIT market totals $1.3 trillion in equity market cap, offering investors 90%+ taxable income distributions. The 2024-2025 Fed rate-cutting cycle triggered a 30%+ sector recovery from the deep 2022-2023 lows driven by rising rates, with data centers and industrial REITs leading the charge.

Location: US2026191 viewsJul 15, 2026 Updated Oct 3, 2026

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#1
Prologis
Prologis dominates as the world's largest REIT by market cap at $120 billion. Amazon and FedEx, the two largest tenants, anchor a portfolio that captures 90% of global e-commerce-driven warehouse demand. With supply chain modernization accelerating, Prologis has generated a 15% average annual total return over the past five years, outperforming the average industrial REIT by 4 percentage points.
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#2
American Tower
American Tower commands an $80 billion market cap through owning over 220,000 cell towers globally, making it the largest infrastructure REIT by asset count. Its long-term leases with carriers like Verizon and T-Mobile ensure 95% of cash flows are contracted beyond five years, producing a 2.8% dividend yield that beats the average telecom REIT by 0.7 points. As 5G buildout expands across the US, Europe, India, and Latin America,
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#3
Equinix
Equinix delivers as the global leader in interconnection, with a $70 billion market cap and $8.7 billion in annual revenue across 260+ data centers in 33 countries. Its ecosystem hosts 90% of global cloud providers and over 10,000 enterprise networks, generating a 25% EBITDA margin that is 8 points higher than the average data center REIT. The company directly benefits from AI infrastructure demand, with a 40% revenue growth from AI-related workloads in 2024.
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#4
Simon Property Group
Simon Property Group, the largest mall REIT at a $55 billion market cap, owns and operates 200+ premium retail outlets and flagship malls across the US. Its experiential retail strategy drove a 98% occupancy rate in 2024, 6 points above the average regional mall REIT, while same-store net operating income grew 8.2% year-over-year.
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#5
Crown Castle
Crown Castle commands a $45B market cap underpinned by 40,000 towers and 115,000 small cells, making it a pure-play bet on US 5G densification. With wireless carriers accelerating small-cell deployments to handle 5G data surges, Crown Castle's small cell count has grown 18% year-over-year, positioning it to capture the densification wave without international currency risk.
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#6
Realty Income
Realty Income, at a $50B market cap, is the premier monthly dividend REIT, having paid 650+ consecutive monthly distributions over 30 years. Its 15,400+ net-leased properties generate a 4.7% dividend yield that outperforms Digital Realty's 3.2% yield by 47%. As a fee-simple owner of essential retail spaces, it maintains a 98.8% occupancy rate and is 40% cheaper than the typical retail REIT on a price-to-FFO basis. This consistency has earned it S&P 500 Dividend Aristocrat status, a distinction only 10% of REITs achieve.
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#7
Public Storage
Public Storage, with a $52B market cap, operates over 3,000 facilities, making it the US's largest self-storage REIT with 20% more locations than the runner-up. Its network effects are formidable: orange-branded facilities achieve 94% occupancy across 200 million square feet, generating $3.2B in annual revenue—30% higher than the average self-storage competitor. Founded in 1972, it has compounded its market cap at 12% annually since 2000, a pace that surpasses Crown Castle's 9% growth rate, driven by pricing power in an industry where same-store revenues grew 6.5% in 2024.
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#8
Digital Realty
Digital Realty commands a $45B market cap with 300+ data centers across 25 countries, serving 5,000+ customers including major hyperscalers. With AI workloads requiring 3x more power than traditional cloud, its 200+ megawatts of new developments under construction are poised to deliver a 18% annualized return.
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#9
Welltower
Welltower commands a $70B market cap, making it the dominant pure-play REIT on US demographic aging. It owns over 1,500 senior housing and healthcare facilities, capitalizing on 10,000 Americans turning 65 daily—a structural demand driver lasting decades.
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#10
AvalonBay Communities
AvalonBay Communities, with a $30B market cap, is a premier residential REIT targeting high-demand coastal and Sunbelt markets. It operates 90,000+ apartment units across 300+ communities, benefiting from a US housing undersupply of 3.8 million units that fuels 6% annual rent growth. Its properties maintain a 95% occupancy rate, a data point 5 percentage points above the national apartment average.
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Frequently asked questions

What is a REIT?

A Real Estate Investment Trust (REIT) is a company that owns, operates, or finances income-producing real estate and must distribute at least 90% of taxable income to shareholders as dividends.

Which companies are typically in the top 10 US REITs by market cap?

The top 10 US REITs by market cap usually include industrial, data center, and infrastructure REITs such as Prologis, Equinix, American Tower, Crown Castle, and Public Storage.

How can I invest in the top US REIT companies?

You can invest in these REITs by buying their individual stocks through a brokerage account or through REIT-focused exchange-traded funds (ETFs) that hold shares of multiple top REITs.

What are the main risks of investing in REITs?

Key risks include interest rate sensitivity (higher rates can lower REIT prices), property market downturns, tenant vacancies, and sector-specific risks such as changes in demand for data centers or retail space.

What sectors do the largest US REITs typically focus on?

The largest US REITs by market cap are concentrated in industrial/logistics, data centers, cell towers/infrastructure, self-storage, and healthcare real estate sectors.