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Ameren Illinois (AILLO) Return on Invested Capital (2016 - 2025)

Historic Return on Invested Capital for Ameren Illinois (AILLO) over the last 17 years, with Q3 2025 value amounting to 0.13%.

  • Ameren Illinois' Return on Invested Capital rose 200.0% to 0.13% in Q3 2025 from the same period last year, while for Sep 2025 it was 0.13%, marking a year-over-year increase of 200.0%. This contributed to the annual value of 0.05% for FY2024, which is 0.0% changed from last year.
  • As of Q3 2025, Ameren Illinois' Return on Invested Capital stood at 0.13%, which was up 200.0% from 0.11% recorded in Q2 2025.
  • Ameren Illinois' 5-year Return on Invested Capital high stood at 0.13% for Q3 2025, and its period low was 0.07% during Q4 2024.
  • For the 5-year period, Ameren Illinois' Return on Invested Capital averaged around 0.09%, with its median value being 0.11% (2024).
  • Per our database at Business Quant, Ameren Illinois' Return on Invested Capital crashed by -100bps in 2021 and then surged by 200bps in 2025.
  • Over the past 5 years, Ameren Illinois' Return on Invested Capital (Quarter) stood at 0.07% in 2021, then grew by 4bps to 0.07% in 2022, then dropped by -6bps to 0.07% in 2023, then decreased by -3bps to 0.07% in 2024, then soared by 97bps to 0.13% in 2025.
  • Its Return on Invested Capital was 0.13% in Q3 2025, compared to 0.11% in Q2 2025 and 0.07% in Q1 2025.