Aon (AON) Shares Outstanding (Diluted Average) (2009 - 2026)

Aon has reported Shares Outstanding (Diluted Average) for 18 years, with the latest figure at $215.4 million in Q1 2026.

• For the quarter ending Q1 2026, Shares Outstanding (Diluted Average) fell 1.15% year-over-year to $215.4 million; the trailing twelve-month figure through Mar 2026 stood at $215.4 million (down 1.15% YoY), and the FY2025 full-year result was $217.1 million, up 2.16% from the prior year.
• Shares Outstanding (Diluted Average) for Q1 2026 stood at $215.4 million, down from $217.1 million in the prior quarter.
• The five-year high for Shares Outstanding (Diluted Average) was $218.4 million in Q3 2024, with the low at $200.1 million in Q1 2024.
• Average Shares Outstanding (Diluted Average) over 5 years is $212.1 million, with a median of $214.6 million recorded in 2022.
• Year-over-year, Shares Outstanding (Diluted Average) decreased 5.83% in 2022 and climbed 8.9% in 2025.
• Tracing AON's Shares Outstanding (Diluted Average) over 5 years: stood at $213.2 million in 2022, then dropped by 3.85% to $205.0 million in 2023, then climbed by 3.66% to $212.5 million in 2024, then advanced by 2.16% to $217.1 million in 2025, then fell by 0.78% to $215.4 million in 2026.
• The last three Shares Outstanding (Diluted Average) figures came in at $215.4 million (Q1 2026), $217.1 million (Q4 2025), and $217.3 million (Q3 2025), per Business Quant data.

Peer Comparison