AON
Aon plcStock · FinancialsS&P 500 Equal Weight 0.2% · S&P 500 0.1% · Russell 3000 0.10% · US Stock Market 0.09%$302.69-1.65%
as of market close, Sep 11, 2026
☾ AH — —
Aon plc monthly returns
Aon plc has averaged 1.17% per month, positive in 59% of months. Month-by-month returns for Aon plc (AON) below, through September 11, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+1.2%
501 months
Best month
+53.1%
Mar 2000
Worst month
-35.3%
Jan 2000
Positive months
59%
of all months
Aon plc monthly returns#
| Month | Path | Total return |
|---|---|---|
| Sep 2026 | -5.9% | |
| Aug 2026 | -10.6% | |
| Jul 2026 | +8.7% | |
| Jun 2026 | +5.0% | |
| May 2026 | +1.7% | |
| Apr 2026 | -3.4% | |
| Mar 2026 | -3.8% | |
| Feb 2026 | -4.1% | |
| Jan 2026 | -0.9% | |
| Dec 2025 | -0.3% | |
| Nov 2025 | +3.9% | |
| Oct 2025 | -4.5% | |
| Sep 2025 | -2.8% | |
| Aug 2025 | +3.4% | |
| Jul 2025 | -0.3% | |
| Jun 2025 | -4.1% | |
| May 2025 | +5.1% | |
| Apr 2025 | -11.1% | |
| Mar 2025 | -2.5% | |
| Feb 2025 | +10.5% | |
| Jan 2025 | +3.2% | |
| Dec 2024 | -8.3% | |
| Nov 2024 | +6.9% | |
| Oct 2024 | +6.0% | |
| Sep 2024 | +0.7% | |
| Aug 2024 | +4.8% | |
| Jul 2024 | +11.9% | |
| Jun 2024 | +4.2% | |
| May 2024 | -0.1% | |
| Apr 2024 | -15.3% | |
| Mar 2024 | +5.6% | |
| Feb 2024 | +5.9% | |
| Jan 2024 | +2.8% | |
| Dec 2023 | -11.4% | |
| Nov 2023 | +6.2% | |
| Oct 2023 | -4.4% | |
| Sep 2023 | -2.8% | |
| Aug 2023 | +4.7% | |
| Jul 2023 | -7.6% | |
| Jun 2023 | +12.0% | |
| May 2023 | -5.2% | |
| Apr 2023 | +3.3% | |
| Mar 2023 | +3.7% | |
| Feb 2023 | -4.6% | |
| Jan 2023 | +6.4% | |
| Dec 2022 | -2.6% | |
| Nov 2022 | +9.5% | |
| Oct 2022 | +5.3% | |
| Sep 2022 | -4.1% | |
| Aug 2022 | -4.0% | |
| Jul 2022 | +8.1% | |
| Jun 2022 | -2.2% | |
| May 2022 | -4.3% | |
| Apr 2022 | -11.4% | |
| Mar 2022 | +11.5% | |
| Feb 2022 | +5.7% | |
| Jan 2022 | -7.9% | |
| Dec 2021 | +1.6% | |
| Nov 2021 | -7.5% | |
| Oct 2021 | +12.1% | |
| Sep 2021 | -0.4% | |
| Aug 2021 | +10.3% | |
| Jul 2021 | +9.1% | |
| Jun 2021 | -5.8% | |
| May 2021 | +0.8% | |
| Apr 2021 | +9.5% | |
| Mar 2021 | +1.1% | |
| Feb 2021 | +12.1% | |
| Jan 2021 | -3.7% | |
| Dec 2020 | +3.1% | |
| Nov 2020 | +11.3% | |
| Oct 2020 | -10.6% | |
| Sep 2020 | +3.2% | |
| Aug 2020 | -2.5% | |
| Jul 2020 | +6.8% | |
| Jun 2020 | -2.2% | |
| May 2020 | +14.1% | |
| Apr 2020 | +4.9% | |
| Mar 2020 | -20.7% | |
| Feb 2020 | -5.6% | |
| Jan 2020 | +6.0% | |
| Dec 2019 | +2.3% | |
| Nov 2019 | +5.4% | |
| Oct 2019 | +0.0% | |
| Sep 2019 | -0.7% | |
| Aug 2019 | +3.0% | |
| Jul 2019 | -1.7% | |
| Jun 2019 | +7.2% | |
| May 2019 | -0.0% | |
| Apr 2019 | +5.8% | |
| Mar 2019 | -0.5% | |
| Feb 2019 | +9.8% | |
| Jan 2019 | +7.8% | |
| Dec 2018 | -12.0% | |
| Nov 2018 | +5.7% | |
| Oct 2018 | +1.8% | |
| Sep 2018 | +5.6% | |
| Aug 2018 | +1.7% | |
| Jul 2018 | +4.7% | |
| Jun 2018 | -1.9% | |
| May 2018 | -1.8% | |
| Apr 2018 | +1.8% | |
| Mar 2018 | +0.0% | |
| Feb 2018 | -1.3% | |
| Jan 2018 | +6.4% | |
| Dec 2017 | -4.4% | |
| Nov 2017 | -2.2% | |
| Oct 2017 | -1.6% | |
| Sep 2017 | +5.0% | |
| Aug 2017 | +0.7% | |
| Jul 2017 | +4.2% | |
| Jun 2017 | +1.6% | |
| May 2017 | +9.2% | |
| Apr 2017 | +1.3% | |
| Mar 2017 | +2.6% | |
| Feb 2017 | +2.6% | |
| Jan 2017 | +1.3% | |
| Dec 2016 | -2.3% | |
| Nov 2016 | +3.0% | |
| Oct 2016 | -1.2% |
Monthly total return (since Oct 2021)#
-15%-10%-5%0%5%10%15%
Oct 2021+12%
Nov 2021-7.5%
Dec 2021+1.6%
Jan 2022-7.9%2022
Feb 2022+5.7%
Mar 2022+11%
Apr 2022-11%
May 2022-4.3%
Jun 2022-2.2%
Jul 2022+8.1%
Aug 2022-4.0%
Sep 2022-4.1%
Oct 2022+5.3%
Nov 2022+9.5%
Dec 2022-2.6%
Jan 2023+6.4%2023
Feb 2023-4.6%
Mar 2023+3.7%
Apr 2023+3.3%
May 2023-5.2%
Jun 2023+12%
Jul 2023-7.6%
Aug 2023+4.7%
Sep 2023-2.8%
Oct 2023-4.4%
Nov 2023+6.2%
Dec 2023-11%
Jan 2024+2.8%2024
Feb 2024+5.9%
Mar 2024+5.6%
Apr 2024-15%
May 2024-0.13%
Jun 2024+4.2%
Jul 2024+12%
Aug 2024+4.8%
Sep 2024+0.66%
Oct 2024+6.0%
Nov 2024+6.9%
Dec 2024-8.3%
Jan 2025+3.2%2025
Feb 2025+11%
Mar 2025-2.5%
Apr 2025-11%
May 2025+5.1%
Jun 2025-4.1%
Jul 2025-0.29%
Aug 2025+3.4%
Sep 2025-2.8%
Oct 2025-4.5%
Nov 2025+3.9%
Dec 2025-0.29%
Jan 2026-0.92%2026
Feb 2026-4.1%
Mar 2026-3.8%
Apr 2026-3.4%
May 2026+1.7%
Jun 2026+5.0%
Jul 2026+8.7%
Aug 2026-11%
Sep 2026-5.9%
Methodology#
Monthly returns are total returns (dividends reinvested), computed from AON's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.
FAQ#
- What is Aon plc's average monthly return?
- Aon plc (AON) has averaged about 1.17% per month, positive in roughly 59% of months. The best month was Mar 2000 (+53.1%) and the worst was Jan 2000 (-35.3%).
More on Aon plc
By month for: S&P 500 · S&P 500 Equal Weight · US Stock Market · Nasdaq-100