Growth Metrics

Aon (AON) Shares Outstanding (2016 - 2025)

Aon has reported Shares Outstanding over the past 17 years, most recently at $214.5 million for Q4 2025.

  • Quarterly results put Shares Outstanding at $214.5 million for Q4 2025, down 0.69% from a year ago — trailing twelve months through Dec 2025 was $214.5 million (down 0.69% YoY), and the annual figure for FY2025 was $214.5 million, down 0.69%.
  • Shares Outstanding for Q4 2025 was $214.5 million at Aon, roughly flat from $215.2 million in the prior quarter.
  • Over the last five years, Shares Outstanding for AON hit a ceiling of $226.2 million in Q1 2021 and a floor of $198.6 million in Q4 2023.
  • Median Shares Outstanding over the past 5 years was $214.6 million (2021), compared with a mean of $212.1 million.
  • Biggest five-year swings in Shares Outstanding: fell 6.23% in 2022 and later rose 8.81% in 2025.
  • Aon's Shares Outstanding stood at $214.8 million in 2021, then decreased by 4.38% to $205.4 million in 2022, then fell by 3.31% to $198.6 million in 2023, then increased by 8.76% to $216.0 million in 2024, then decreased by 0.69% to $214.5 million in 2025.
  • The last three reported values for Shares Outstanding were $214.5 million (Q4 2025), $215.2 million (Q3 2025), and $215.7 million (Q2 2025) per Business Quant data.