As of October 2025, the 10 leading office real estate investment trusts (REITs) in the United States had a combined market capitalization of about **** billion U.S. dollars. Most REITs in the list experienced a decrease in market capitalization in 2025. The largest office REIT, Boston Properties, Inc., saw its market cap decrease from **** billion U.S. dollars to **** billion U.S. dollars between October 2024 and October 2025.
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Nareit. (December 29, 2025). Leading office real estate investment trusts (REITs) in the United States from 2019 to 2025, by market capitalization (in billion U.S. dollars) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 27, 2026, from /statistics/1347346/market-cap-leading-office-reits-usa/
Nareit. "Leading office real estate investment trusts (REITs) in the United States from 2019 to 2025, by market capitalization (in billion U.S. dollars)." Chart. December 29, 2025. ÌÇÐÄÆÆ½â°æ. Accessed July 27, 2026. /statistics/1347346/market-cap-leading-office-reits-usa/
Nareit. (2025). Leading office real estate investment trusts (REITs) in the United States from 2019 to 2025, by market capitalization (in billion U.S. dollars). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 27, 2026. /statistics/1347346/market-cap-leading-office-reits-usa/
Nareit. "Leading Office Real Estate Investment Trusts (Reits) in The United States from 2019 to 2025, by Market Capitalization (in Billion U.S. Dollars)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 29 Dec 2025, /statistics/1347346/market-cap-leading-office-reits-usa/
Nareit, Leading office real estate investment trusts (REITs) in the United States from 2019 to 2025, by market capitalization (in billion U.S. dollars) ÌÇÐÄÆÆ½â°æ, /statistics/1347346/market-cap-leading-office-reits-usa/ (last visited July 27, 2026)
Leading office real estate investment trusts (REITs) in the United States from 2019 to 2025, by market capitalization (in billion U.S. dollars) [Graph], Nareit, December 29, 2025. [Online]. Available: /statistics/1347346/market-cap-leading-office-reits-usa/