Seasonality
SEIC seasonality — SEI Investments Company
Over the last 11 years, SEIC's strongest month on average has been November (+6.0%) and its weakest September (-2.7%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +1.22% | +1.28% | 50% | +7.1% | -8.0% | 10 |
| Feb | -1.07% | -1.57% | 40% | +11.0% | -16.2% | 10 |
| Mar | -0.57% | -0.38% | 50% | +8.8% | -15.3% | 10 |
| Apr | +0.30% | +0.84% | 70% | +15.6% | -15.6% | 10 |
| May | +1.10% | +1.77% | 60% | +8.9% | -7.7% | 10 |
| Jun | +1.47% | +0.60% | 50% | +11.6% | -7.5% | 10 |
| Jul | +2.89% | +3.67% | 60% | +17.4% | -4.8% | 10 |
| Aug | +1.35% | +0.12% | 60% | +7.8% | -3.5% | 10 |
| Sep | -2.67% | -3.14% | 30% | +4.5% | -10.3% | 10 |
| Oct | +0.10% | +0.93% | 60% | +10.7% | -12.5% | 10 |
| Nov | +6.00% | +7.69% | 89% | +14.7% | -5.4% | 9 |
| Dec | +0.86% | +1.80% | 70% | +8.9% | -14.0% | 10 |
Monthly returns heat map — SEIC
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 7.1 | -7.4 | -3.5 | 15.6 | -3.1 | -0.2 | 17.4 | 7.8 | -7.5 | 0.7 | 1.8 | +28.4% | |
| 2025 | 5.0 | -7.5 | -3.0 | 0.8 | 8.9 | 5.4 | -1.9 | 0.2 | -3.9 | -5.0 | 0.3 | 1.4 | -0.6% |
| 2024 | -0.5 | 6.3 | 6.9 | -8.3 | 2.7 | -4.5 | 4.9 | -0.3 | 2.3 | 8.1 | 10.5 | -0.2 | +29.8% |
| 2023 | 7.1 | -3.5 | -4.5 | 2.4 | -4.0 | 5.4 | 5.7 | -1.5 | -3.0 | -10.9 | 9.3 | 8.3 | +9.0% |
| 2022 | -3.8 | -0.1 | 2.8 | -7.5 | 4.9 | -7.5 | 2.5 | -1.2 | -10.3 | 10.7 | 14.7 | -6.4 | -4.3% |
| 2021 | -8.0 | 6.0 | 8.8 | 0.8 | 3.3 | -2.3 | -1.9 | 3.3 | -5.6 | 6.3 | -5.4 | 2.2 | +6.0% |
| 2020 | -0.3 | -16.2 | -15.3 | 10.0 | 6.4 | 1.4 | -4.8 | 0.1 | -3.1 | -3.1 | 7.3 | 8.9 | -12.2% |
| 2019 | 2.9 | 11.0 | -0.9 | 4.2 | -7.7 | 11.6 | 6.2 | -3.5 | 3.0 | 1.1 | 7.7 | 1.5 | +41.7% |
| 2018 | 4.6 | -3.1 | 2.9 | -15.6 | 0.9 | -2.0 | -4.1 | 5.2 | -3.1 | -12.5 | 0.5 | -14.0 | -35.7% |
| 2017 | -1.7 | 3.8 | 0.2 | 0.5 | -1.2 | 7.4 | 5.1 | 3.5 | 4.5 | 5.7 | 9.1 | 2.1 | +45.6% |
| 2016 | 4.6 |