American Tower stock tracks third 2026 outlook boost from CoreSite

American Tower's third-quarter results and updated 2026 outlook continue to center on CoreSite's data-center momentum. The company announced the changes on October 27 for the quarter ended September 30, according to its American Tower financial release.

CoreSite Leads The Upgrade

Total revenue increased 2.5 percent to 2.785 billion US dollars, while total property revenue rose 4.5 percent to 2.734 billion US dollars. Data-center cash revenue increased 16.3 percent, making the segment the clearest source of operating momentum.

The company raised the midpoint of its full-year 2026 property-revenue outlook by 55 million US dollars. The revised range is 10.785 billion to 10.865 billion US dollars, while the adjusted EBITDA midpoint remains unchanged at 7.275 billion US dollars.

American Tower also lifted its full-year AFFO per-share range to 11.04 to 11.16 US dollars from 11.00 to 11.17 US dollars. The company attributed the midpoint increase mainly to capital-allocation decisions, including share repurchases. Third-quarter AFFO attributable to common stockholders rose 2.4 percent to 1.335 billion US dollars, and AFFO per share increased 3.2 percent to 2.87 US dollars.

Fresh Market Reference

American Tower stock traded at 170.93 euros on Lang & Schwarz at 15:36 CET on Wednesday, November 11, 2026. That was 1.20 percent above the 168.90 euros cited in the relevant own report published on November 10.

For investors, the outlook combines stronger data-center growth with continuing pressure from non-cash straight-line revenue effects and lower services activity. Management's unchanged adjusted EBITDA midpoint keeps the focus on how CoreSite growth translates into broader earnings expansion.

The broader US market remains the backdrop for American Tower stock, with investors also watching the S&P 500.

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