Seasonality
CMS seasonality — CMS Energy
Over the last 11 years, CMS's strongest month on average has been March (+4.0%) and its weakest September (-2.9%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +0.27% | -0.60% | 40% | +9.0% | -6.8% | 10 |
| Feb | +0.00% | -0.10% | 50% | +10.7% | -11.8% | 10 |
| Mar | +4.04% | +3.45% | 80% | +13.1% | -2.8% | 10 |
| Apr | +0.51% | +0.23% | 60% | +5.2% | -2.8% | 10 |
| May | -0.65% | -0.62% | 50% | +4.4% | -6.9% | 10 |
| Jun | -0.78% | -0.81% | 40% | +5.4% | -5.8% | 10 |
| Jul | +3.25% | +3.10% | 80% | +9.9% | -5.9% | 10 |
| Aug | -0.03% | +0.07% | 50% | +8.3% | -8.0% | 10 |
| Sep | -2.91% | -2.53% | 40% | +4.1% | -13.8% | 10 |
| Oct | +2.00% | +1.05% | 70% | +11.1% | -2.0% | 10 |
| Nov | +1.46% | +2.57% | 67% | +7.0% | -4.1% | 9 |
| Dec | +0.01% | +0.72% | 50% | +10.5% | -7.3% | 10 |
Monthly returns heat map — CMS
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2.2 | 9.2 | -0.6 | -1.1 | -5.4 | 5.4 | -5.9 | -5.5 | -7.3 | 11.1 | -1.3 | -1.1% | |
| 2025 | -1.0 | 10.7 | 2.8 | -1.9 | -4.6 | -1.4 | 6.5 | -3.0 | 2.4 | 0.4 | 2.6 | -7.3 | +4.9% |
| 2024 | -1.6 | 0.4 | 5.2 | 0.5 | 3.8 | -5.4 | 8.8 | 4.7 | 4.1 | -1.4 | 0.1 | -4.4 | +14.8% |
| 2023 | -0.2 | -6.7 | 4.1 | 1.4 | -6.9 | 1.3 | 4.0 | -8.0 | -5.5 | 2.3 | 4.5 | 2.3 | -8.3% |
| 2022 | -1.0 | -0.6 | 9.3 | -1.8 | 3.4 | -5.0 | 1.8 | -1.7 | -13.8 | -2.0 | 7.0 | 3.7 | -2.6% |
| 2021 | -6.8 | -4.9 | 13.1 | 5.2 | -2.6 | -5.8 | 4.6 | 3.8 | -6.9 | 1.0 | -2.5 | 10.5 | +6.6% |
| 2020 | 9.0 | -11.8 | -2.8 | -2.8 | 2.6 | -0.3 | 9.9 | -5.8 | 1.5 | 3.1 | -2.8 | -0.9 | -2.9% |
| 2019 | 5.0 | 4.3 | 2.1 | 0.0 | 1.0 | 3.2 | 0.5 | 8.3 | 1.4 | -0.1 | -4.1 | 2.5 | +26.6% |
| 2018 | -5.4 | -5.1 | 6.7 | 4.2 | -2.2 | 2.5 | 2.2 | 1.9 | -0.5 | 1.1 | 5.2 | -4.7 | +5.0% |
| 2017 | 2.4 | 4.5 | 0.5 | 1.5 | 4.4 | -2.5 | -0.0 | 5.0 | -4.6 | 4.4 | 3.2 | -5.2 | +13.7% |
| 2016 | 3.5 |