American Tower (AMT) Shares Outstanding (Diluted Average) (2009 - 2026)

American Tower has disclosed Shares Outstanding (Diluted Average) across 16 years of filings, most recently posting $466.8 million for Q1 2026.

• Shares Outstanding (Diluted Average) for Q1 2026 came in at $466.8 million, changed 0.36% year-over-year; the trailing twelve-month figure through Mar 2026 was $466.8 million (changed 0.36% YoY), and the FY2025 annual result was $468.8 million, changed 0.14% from the prior year.
• Shares Outstanding (Diluted Average) came in at $466.8 million for Q1 2026 at American Tower, roughly flat from $468.8 million in the prior quarter.
• In the past five years, Shares Outstanding (Diluted Average) ranged from a high of $468.9 million in Q3 2025 to a low of $457.2 million in Q1 2022.
• The 5-year median for Shares Outstanding (Diluted Average) is $467.7 million (2024), against an average of $466.2 million.
• Across the five-year window, Shares Outstanding (Diluted Average) climbed 2.45% in 2022 and slipped 0.36% in 2026, its largest moves.
• American Tower's Shares Outstanding (Diluted Average) stood at $461.4 million in 2022, then increased by 1.26% to $467.2 million in 2023, then rose by 0.21% to $468.1 million in 2024, then climbed by 0.14% to $468.8 million in 2025, then slipped by 0.41% to $466.8 million in 2026.
• The last three Shares Outstanding (Diluted Average) figures came in at $466.8 million (Q1 2026), $468.8 million (Q4 2025), and $468.9 million (Q3 2025), per Business Quant data.