Seasonality
ACIW seasonality — ACI Worldwide
Over the last 11 years, ACIW's strongest month on average has been November (+7.5%) and its weakest September (-3.0%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +2.05% | +1.53% | 50% | +21.4% | -9.3% | 10 |
| Feb | -1.17% | +0.27% | 50% | +9.4% | -19.1% | 10 |
| Mar | -0.32% | +0.60% | 60% | +9.3% | -13.3% | 10 |
| Apr | +0.65% | -0.12% | 50% | +13.5% | -12.3% | 10 |
| May | -1.94% | +0.85% | 60% | +6.4% | -13.3% | 10 |
| Jun | +2.72% | +0.41% | 50% | +15.2% | -2.9% | 10 |
| Jul | +2.38% | +1.83% | 60% | +14.0% | -7.7% | 10 |
| Aug | +1.37% | +1.47% | 50% | +16.5% | -16.9% | 10 |
| Sep | -3.05% | -2.80% | 40% | +6.9% | -11.8% | 10 |
| Oct | +1.54% | +0.01% | 50% | +16.4% | -10.8% | 10 |
| Nov | +7.48% | +11.69% | 56% | +31.3% | -14.1% | 9 |
| Dec | +4.84% | +1.53% | 60% | +19.1% | -8.6% | 10 |
Monthly returns heat map — ACIW
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -9.3 | -8.5 | 3.4 | 5.4 | 1.0 | 15.2 | 14.0 | -7.1 | -8.3 | 15.3 | 6.5 | +25.5% | |
| 2025 | 3.2 | 7.1 | -4.6 | -2.5 | -13.3 | -0.8 | -7.3 | 15.9 | 6.9 | -9.7 | -1.6 | 2.0 | -7.9% |
| 2024 | -1.7 | 9.4 | 0.9 | 2.7 | 5.6 | 9.9 | 9.2 | 16.5 | 1.1 | -3.3 | 15.5 | -8.6 | +69.6% |
| 2023 | 21.4 | -7.5 | 4.4 | -6.1 | -9.9 | 1.6 | 0.1 | 4.7 | -7.1 | -9.7 | 31.3 | 14.4 | +33.0% |
| 2022 | -0.9 | -2.5 | -6.1 | -12.3 | -3.5 | -2.8 | 10.2 | -16.9 | -11.8 | 16.4 | -14.1 | 10.1 | -33.7% |
| 2021 | -0.1 | -0.3 | -0.6 | -0.7 | 1.3 | -2.9 | -7.7 | -6.0 | -4.7 | -0.2 | -5.0 | 19.1 | -9.7% |
| 2020 | -9.1 | -19.1 | -13.3 | 13.5 | 0.7 | -2.1 | -0.7 | 9.7 | -11.1 | 11.6 | 11.7 | 18.0 | +1.4% |
| 2019 | 6.8 | 7.8 | 3.1 | 8.1 | -11.4 | 9.2 | -2.3 | -11.3 | 5.2 | 0.2 | 19.5 | 1.0 | +36.9% |
| 2018 | 3.4 | 0.9 | 0.3 | -2.0 | 3.9 | 2.1 | 4.7 | 9.9 | -0.9 | -10.8 | 15.1 | -4.2 | +22.1% |
| 2017 | 6.9 | 0.9 | 9.3 | 0.5 | 6.4 | -2.1 | 3.6 | -1.8 | 0.1 | 5.7 | -5.0 | -0.9 | +24.9% |
| 2016 | -2.5 |