SEIC
$102.43-1.39%
as of close, Oct 2, 2026
☾ AH $102.43 -1.39%
SEI Investments CompanyStock · FinanceNasdaq Composite 0.02%US Stock Market 0.01%Russell 1000 0.01%Russell 3000 0.01%
SEI Investments Company monthly returns
SEI Investments Company has averaged 2.06% per month, positive in 58% of months. Month-by-month returns for SEI Investments Company (SEIC) below, through October 2, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+2.1%
448 months
Best month
+145.1%
Aug 1989
Worst month
-36.7%
Aug 1984
Positive months
58%
of all months
SEI Investments Company monthly returns#
| Month | Path | Total return |
|---|---|---|
| Oct 2026 | -0.2% | |
| Sep 2026 | -7.5% | |
| Aug 2026 | +7.8% | |
| Jul 2026 | +17.4% | |
| Jun 2026 | +0.4% | |
| May 2026 | -3.1% | |
| Apr 2026 | +15.6% | |
| Mar 2026 | -3.5% | |
| Feb 2026 | -7.4% | |
| Jan 2026 | +7.1% | |
| Dec 2025 | +2.1% | |
| Nov 2025 | +0.3% | |
| Oct 2025 | -5.0% | |
| Sep 2025 | -3.9% | |
| Aug 2025 | +0.2% | |
| Jul 2025 | -1.9% | |
| Jun 2025 | +6.0% | |
| May 2025 | +8.9% | |
| Apr 2025 | +0.9% | |
| Mar 2025 | -3.0% | |
| Feb 2025 | -7.5% | |
| Jan 2025 | +5.0% | |
| Dec 2024 | +0.4% | |
| Nov 2024 | +10.5% | |
| Oct 2024 | +8.1% | |
| Sep 2024 | +2.3% | |
| Aug 2024 | -0.3% | |
| Jul 2024 | +4.9% | |
| Jun 2024 | -3.8% | |
| May 2024 | +2.7% | |
| Apr 2024 | -8.3% | |
| Mar 2024 | +6.9% | |
| Feb 2024 | +6.3% | |
| Jan 2024 | -0.5% | |
| Dec 2023 | +9.1% | |
| Nov 2023 | +9.3% | |
| Oct 2023 | -10.9% | |
| Sep 2023 | -2.9% | |
| Aug 2023 | -1.5% | |
| Jul 2023 | +5.7% | |
| Jun 2023 | +6.1% | |
| May 2023 | -4.0% | |
| Apr 2023 | +2.4% | |
| Mar 2023 | -4.5% | |
| Feb 2023 | -3.5% | |
| Jan 2023 | +7.1% | |
| Dec 2022 | -5.7% | |
| Nov 2022 | +14.7% | |
| Oct 2022 | +10.7% | |
| Sep 2022 | -10.3% | |
| Aug 2022 | -1.2% | |
| Jul 2022 | +2.5% | |
| Jun 2022 | -6.9% | |
| May 2022 | +4.9% | |
| Apr 2022 | -7.5% | |
| Mar 2022 | +2.8% | |
| Feb 2022 | -0.1% | |
| Jan 2022 | -3.8% | |
| Dec 2021 | +2.9% | |
| Nov 2021 | -5.4% | |
| Oct 2021 | +6.3% | |
| Sep 2021 | -5.6% | |
| Aug 2021 | +3.3% | |
| Jul 2021 | -1.9% | |
| Jun 2021 | -1.7% | |
| May 2021 | +3.3% | |
| Apr 2021 | +0.8% | |
| Mar 2021 | +8.8% | |
| Feb 2021 | +6.0% | |
| Jan 2021 | -8.0% | |
| Dec 2020 | +9.7% | |
| Nov 2020 | +7.3% | |
| Oct 2020 | -3.1% | |
| Sep 2020 | -3.1% | |
| Aug 2020 | +0.1% | |
| Jul 2020 | -4.8% | |
| Jun 2020 | +2.0% | |
| May 2020 | +6.4% | |
| Apr 2020 | +10.0% | |
| Mar 2020 | -15.3% | |
| Feb 2020 | -16.2% | |
| Jan 2020 | -0.3% | |
| Dec 2019 | +2.0% | |
| Nov 2019 | +7.7% | |
| Oct 2019 | +1.1% | |
| Sep 2019 | +3.0% | |
| Aug 2019 | -3.5% | |
| Jul 2019 | +6.2% | |
| Jun 2019 | +12.3% | |
| May 2019 | -7.7% | |
| Apr 2019 | +4.2% | |
| Mar 2019 | -0.9% | |
| Feb 2019 | +11.0% | |
| Jan 2019 | +2.9% | |
| Dec 2018 | -13.3% | |
| Nov 2018 | +0.5% | |
| Oct 2018 | -12.5% | |
| Sep 2018 | -3.1% | |
| Aug 2018 | +5.2% | |
| Jul 2018 | -4.1% | |
| Jun 2018 | -1.5% | |
| May 2018 | +0.9% | |
| Apr 2018 | -15.6% | |
| Mar 2018 | +2.9% | |
| Feb 2018 | -3.1% | |
| Jan 2018 | +4.6% | |
| Dec 2017 | +2.6% | |
| Nov 2017 | +9.1% | |
| Oct 2017 | +5.7% | |
| Sep 2017 | +4.4% | |
| Aug 2017 | +3.5% | |
| Jul 2017 | +5.1% | |
| Jun 2017 | +8.0% | |
| May 2017 | -1.2% | |
| Apr 2017 | +0.5% | |
| Mar 2017 | +0.2% | |
| Feb 2017 | +3.8% | |
| Jan 2017 | -1.7% | |
| Dec 2016 | +5.2% | |
| Nov 2016 | +6.4% |
Monthly total return (since Nov 2021)#
-15%-10%-5%0%5%10%15%
Nov 2021-5.4%
Dec 2021+2.9%
Jan 2022-3.8%2022
Feb 2022-0.05%
Mar 2022+2.8%
Apr 2022-7.5%
May 2022+4.9%
Jun 2022-6.9%
Jul 2022+2.5%
Aug 2022-1.2%
Sep 2022-10%
Oct 2022+11%
Nov 2022+15%
Dec 2022-5.7%
Jan 2023+7.1%2023
Feb 2023-3.5%
Mar 2023-4.5%
Apr 2023+2.4%
May 2023-4.0%
Jun 2023+6.1%
Jul 2023+5.7%
Aug 2023-1.5%
Sep 2023-2.9%
Oct 2023-11%
Nov 2023+9.3%
Dec 2023+9.1%
Jan 2024-0.49%2024
Feb 2024+6.3%
Mar 2024+6.9%
Apr 2024-8.3%
May 2024+2.7%
Jun 2024-3.8%
Jul 2024+4.9%
Aug 2024-0.31%
Sep 2024+2.3%
Oct 2024+8.1%
Nov 2024+11%
Dec 2024+0.4%
Jan 2025+5.0%2025
Feb 2025-7.5%
Mar 2025-3.0%
Apr 2025+0.85%
May 2025+8.9%
Jun 2025+6.0%
Jul 2025-1.9%
Aug 2025+0.18%
Sep 2025-3.9%
Oct 2025-5.0%
Nov 2025+0.31%
Dec 2025+2.1%
Jan 2026+7.1%2026
Feb 2026-7.4%
Mar 2026-3.5%
Apr 2026+16%
May 2026-3.1%
Jun 2026+0.39%
Jul 2026+17%
Aug 2026+7.8%
Sep 2026-7.5%
Oct 2026-0.22%
Methodology#
Monthly returns are total returns (dividends reinvested), computed from SEIC'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 SEI Investments Company's average monthly return?
- SEI Investments Company (SEIC) has averaged about 2.06% per month, positive in roughly 58% of months. The best month was Aug 1989 (+145.1%) and the worst was Aug 1984 (-36.7%).
More on SEI Investments Company
By month for: S&P 500 · S&P 500 Equal Weight · US Stock Market · Nasdaq-100