SEIC
SEI Investments CompanyStock · Finance$106.39+$0.84 (+0.80%)as of market close, Aug 13, 2026
☾ After hours:$106.39+0.00%3:59 PM ET
SEIC weekly returns
SEI Investments Company has averaged 0.49% per week, positive in 53% of weeks. Week-by-week returns for SEI Investments Company (SEIC) below, through August 13, 2026 — the table lists the most recent weeks; the bar chart plots the last 2 years.
Average week
+0.5%
1908 weeks
Best week
+145.0%
Aug 31, 1989
Worst week
-36.7%
Aug 6, 1984
Positive weeks
53%
of all weeks
SEI Investments Company weekly returns#
| Week ending | Path | Total return |
|---|---|---|
| Aug 13, 2026 | +1.6% | |
| Aug 7, 2026 | +1.7% | |
| Jul 31, 2026 | +3.8% | |
| Jul 24, 2026 | -0.0% | |
| Jul 17, 2026 | +4.0% | |
| Jul 10, 2026 | +4.4% | |
| Jul 2, 2026 | +4.8% | |
| Jun 26, 2026 | -2.4% | |
| Jun 18, 2026 | +0.0% | |
| Jun 12, 2026 | +0.6% | |
| Jun 5, 2026 | +1.8% | |
| May 29, 2026 | -2.9% |
Weekly total return (since Aug 23, 2024)
-10%-5%+0%+5%+10%
20252026
Methodology#
Weekly returns are total returns (dividends reinvested), computed from SEIC's split- and dividend-adjusted weekly (ISO week) closes. The table shows the most recent 260 weeks and the bar chart the most recent 104. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.
See also: S&P 500 · Nasdaq-100 · Dow Jones · Russell 2000 · US Bond Market · Gold · Silver · Bitcoin · Ethereum
FAQ#
- What is SEI Investments Company's average weekly return?
- SEI Investments Company (SEIC) has averaged about 0.49% per week, positive in roughly 53% of weeks. The best week was Aug 31, 1989 (+145.0%) and the worst was Aug 6, 1984 (-36.7%).