Equinix (EQIX) - Global data center REIT with major US operations and NASDAQ listing.

Digital Realty Trust (DLR) - Leading US data center provider, NYSE-listed REIT focusing on colocation and cloud services.

Iron Mountain (IRM) - Offers data center services alongside storage, NYSE-listed.

Switch (sold to Digital Realty in 2022, now under DLR) - Key US player in hyperscale facilities.

These are among the top per recent market analysis. For more, check sources like U.S. News Investing or Yahoo Finance.

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