Seasonality
AON seasonality — Aon plc
Over the last 11 years, AON's strongest month on average has been November (+4.3%) and its weakest December (-3.4%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +1.95% | +2.90% | 70% | +7.5% | -8.0% | 10 |
| Feb | +3.09% | +4.15% | 60% | +12.1% | -5.6% | 10 |
| Mar | -0.29% | +0.53% | 60% | +11.5% | -20.6% | 10 |
| Apr | -1.65% | +1.25% | 60% | +9.3% | -15.5% | 10 |
| May | +1.89% | +0.36% | 50% | +14.1% | -5.2% | 10 |
| Jun | +1.37% | -0.19% | 50% | +12.0% | -5.8% | 10 |
| Jul | +4.26% | +5.60% | 70% | +11.9% | -7.7% | 10 |
| Aug | +1.05% | +2.18% | 70% | +10.3% | -10.8% | 10 |
| Sep | -1.02% | -0.52% | 40% | +5.7% | -13.9% | 10 |
| Oct | +1.90% | +0.67% | 50% | +16.2% | -10.8% | 10 |
| Nov | +4.33% | +5.72% | 78% | +11.3% | -7.5% | 9 |
| Dec | -3.42% | -2.45% | 30% | +3.1% | -12.0% | 10 |
Monthly returns heat map — AON
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -0.9 | -4.0 | -3.8 | -3.5 | 1.4 | 5.0 | 8.7 | -10.8 | -13.9 | 16.2 | 4.1 | -5.1% | |
| 2025 | 3.2 | 10.3 | -2.5 | -11.1 | 4.9 | -4.1 | -0.3 | 3.2 | -2.8 | -4.5 | 3.9 | -0.3 | -1.8% |
| 2024 | 2.5 | 5.9 | 5.6 | -15.5 | -0.1 | 4.2 | 11.9 | 4.6 | 0.7 | 6.0 | 6.7 | -8.3 | +23.4% |
| 2023 | 6.2 | -4.6 | 3.7 | 3.1 | -5.2 | 12.0 | -7.7 | 4.7 | -2.8 | -4.6 | 6.2 | -11.4 | -3.0% |
| 2022 | -8.0 | 5.7 | 11.5 | -11.6 | -4.3 | -2.2 | 7.9 | -4.0 | -4.1 | 5.1 | 9.5 | -2.6 | -0.1% |
| 2021 | -3.9 | 12.1 | 1.1 | 9.3 | 0.8 | -5.8 | 8.9 | 10.3 | -0.4 | 11.9 | -7.5 | 1.6 | +42.3% |
| 2020 | 5.7 | -5.6 | -20.6 | 4.6 | 14.1 | -2.2 | 6.5 | -2.5 | 3.2 | -10.8 | 11.3 | 3.1 | +1.4% |
| 2019 | 7.5 | 9.8 | -0.5 | 5.5 | -0.0 | 7.2 | -1.9 | 3.0 | -0.7 | -0.2 | 5.4 | 2.3 | +43.3% |
| 2018 | 6.1 | -1.3 | 0.0 | 1.5 | -1.8 | -1.9 | 4.7 | 1.4 | 5.7 | 1.6 | 5.7 | -12.0 | +8.5% |
| 2017 | 1.1 | 2.6 | 2.6 | 1.0 | 9.2 | 1.6 | 3.9 | 0.7 | 5.0 | -1.8 | -2.2 | -4.4 | +20.1% |
| 2016 | -2.2 |