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American Tower Corp

AMTNYSEReal Estate Investment TrustsFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 27, 2026Score 7/302% above fair value
$188.30+0.52 (+0.28%)

Close on Nov 2, 2026Market cap $87.74BP/E 25.9Yield 3.61%

American Tower U.S. Data Centers JV (CoreSite) by Quarter

U.S. Data Centers JV (CoreSite) — AMT Common Equity Ownership (%) (%)

QuarterlyAnnual

American Tower U.S. Data Centers JV (CoreSite): 64.0% in Q3 2026, down 7.0 pts from a year earlier. That is the lowest of the 17 quarters on record here.

Latest, Q3 2026
64.0%
Period ended Sep 30, 2026
Change on a year earlier
-7.0 pts
71.0% in Q3 2025
History
17 quarters
Since Q3 2022
Sources
17
Documents cited below

Where the Q3 2026 figure comes from

“holds a common equity interest of approximately 64 % in its U.S. data center business, with Stonepeak holding approximately 36 %”

Source: American Tower SEC Form 10-Q FY2026Q3 (0001053507-26-000157, filed 2026-10-27) ↗

Shifted from 71.0% to 64.0% on August 8, 2026 upon 1-for-1 conversion of Stonepeak's 5.0% mandatorily convertible preferred equity into common equity.

Quarterly history

Hover a value to see the sentence it was read from; calculated values show their formula

PeriodEndedU.S. Data Centers JV (CoreSite) — AMT Common Equity Ownership (%) (%)Year on yearSource
Q3 2026Sep 30, 202664.0%-7.0 ptsAmerican Tower SEC Form 10-Q FY2026Q3 (0001053507-26-000157, filed 2026-10-27) ↗
Q2 2026Jun 30, 202671.0%0.0 ptsAmerican Tower SEC Form 10-Q FY2026Q2 (0001053507-26-000133, filed 2026-07-28) ↗
Q1 2026Mar 31, 202671.0%0.0 ptsAmerican Tower SEC Form 10-Q FY2026Q1 (0001053507-26-000099, filed 2026-04-28) ↗
Q4 2025Dec 31, 202571.0%-1.0 ptsAmerican Tower SEC Form 10-K FY2025 (0001053507-26-000035, filed 2026-02-24) ↗
Q3 2025Sep 30, 202571.0%-1.0 ptsAmerican Tower SEC Form 10-Q FY2025Q3 (0001053507-25-000149, filed 2025-10-28) ↗
Q2 2025Jun 30, 202571.0%-1.0 ptsAmerican Tower SEC Form 10-Q FY2025Q2 (0001053507-25-000120, filed 2025-07-29) ↗
Q1 2025Mar 31, 202571.0%-1.0 ptsAmerican Tower SEC Form 10-Q FY2025Q1 (0001053507-25-000102, filed 2025-04-29) ↗
Q4 2024Dec 31, 202472.0%0.0 ptsAmerican Tower SEC Form 10-K FY2024 (0001053507-25-000025, filed 2025-02-25) ↗
Q3 2024Sep 30, 202472.0%0.0 ptsAmerican Tower SEC Form 10-Q FY2024Q3 (0001053507-24-000130, filed 2024-10-29) ↗
Q2 2024Jun 30, 202472.0%0.0 ptsAmerican Tower SEC Form 10-Q FY2024Q2 (0001053507-24-000105, filed 2024-07-30) ↗
Q1 2024Mar 31, 202472.0%0.0 ptsAmerican Tower SEC Form 10-Q FY2024Q1 (0001053507-24-000084, filed 2024-04-30) ↗
Q4 2023Dec 31, 202372.0%0.0 ptsAmerican Tower SEC Form 10-K FY2023 (0001053507-24-000011, filed 2024-02-27) ↗
Q3 2023Sep 30, 202372.0%-5.0 ptsAmerican Tower SEC Form 10-Q FY2023Q3 (0001053507-23-000161, filed 2023-10-26) ↗
Q2 2023Jun 30, 202372.0%–American Tower SEC Form 10-Q FY2023Q2 (0001053507-23-000142, filed 2023-07-27) ↗
Q1 2023Mar 31, 202372.0%–American Tower SEC Form 10-Q FY2023Q1 (0001053507-23-000114, filed 2023-04-26) ↗
Q4 2022Dec 31, 202272.0%–American Tower SEC Form 10-K FY2022 (0001053507-23-000023, filed 2023-02-23) ↗

Breakdown

What makes up U.S. Data Centers JV (CoreSite)

Cite this data

StockData. (2026). American Tower U.S. Data Centers JV (CoreSite) (%), quarterly Q3 2022–Q3 2026 [Data set]. Compiled from American Tower SEC filings and investor materials. https://stockdatahq.com/stocks/amt/kpis/jv-coresite-amt-pct

See every metric in the American Tower KPI table. Data updated Nov 1, 2026.