SEI Select Small Cap ETF (SEIS) Performance
SEIS total return
Distributions reinvested · as of Oct 23, 2026- YTD
- +12.7% since Dec 31, 2025
- 1 year
- +12.7% total return
- Since first price
- +25.1% since 2024
SEIS trailing returns vs SPY, QQQ, AGG
| Period | SEIS total return | Price only | S&P 500 (SPY) | Nasdaq-100 (QQQ) | U.S. bonds (AGG) |
|---|---|---|---|---|---|
| 1 month | +0.4% | +0.3% | −1.0% | −5.0% | +0.9% |
| 3 months | −1.9% | −2.0% | +3.2% | +1.9% | −0.4% |
| 6 months | +2.5% | +2.4% | +7.8% | +8.4% | −1.5% |
| YTD | +12.7% | +12.4% | +12.3% | +15.1% | −1.0% |
| 1 year | +12.7% | +12.3% | +14.4% | +15.9% | −1.1% |
| Since inceptionOct 10, 2024 | +25.1% | +23.8% | — | — | — |
Total return from adjusted closes (distributions reinvested, before tax). Periods of 3 years or more are also shown annualized. Price only excludes distributions.
Growth of $10,000: SEIS vs SPY
From Oct 10, 2024: SEIS grew to $12,513, SPY to $13,495.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
SEIS returns by calendar year
1 of 1 full years positive. Best 2025 (+9.8%), worst 2025 (+9.8%). 2026 is year to date.
SEIS annual returns table
| Year | SEIS | Largest drop | SPY | QQQ | AGG |
|---|---|---|---|---|---|
| 2026YTD | +12.7% | −11.2% | +12.3% | +15.1% | −1.0% |
| 2025 | +9.8% | −23.0% | +17.7% | +20.8% | +7.2% |
Largest drop = deepest fall from a high within that calendar year.
Calendar-year return vs largest drop within the year
Most years include a sizable fall at some point even when the year ends higher.
SEIS largest drawdowns
Now 6.6% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Nov 25, 2024 | −26.1% | Apr 8, 2025 | Sep 11, 2025 | 4 months | 10 months |
| Jan 22, 2026 | −11.2% | Mar 30, 2026 | Apr 17, 2026 | 2 months | 3 months |
Declines from a closing high (distributions reinvested) of 10% or more. Underwater = time from the peak until the old high was regained.
SEIS risk statistics
| Statistic | Since 2024 |
|---|---|
| Annualized return | +12.0% |
| Volatility (annualized) | 18.9% |
| Sharpe ratio | 0.49 |
| Sortino ratio | 0.84 |
| Best month | +13.1% |
| Worst month | −8.3% |
| Best 12 months | +35.6% |
| Worst 12 months | +0.9% |
| Positive months | 61% |
| Beta vs S&P 500 | — |
| Correlation with S&P 500 | — |
From monthly total returns. Sharpe and Sortino use 1–3 month T-bills (BIL) as the risk-free rate, so they need history from 2007 on.
SEIS rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 13 | +0.9% | +16.9% | +35.6% | 100% |
Every holding period starting at a month-end since 2024. Returns for 3 years and longer are annualized.
SEIS performance overview
SEI Select Small Cap ETF (SEIS) returned +12.7% over the past year, with distributions reinvested. Since its first recorded price on Oct 10, 2024 it has returned +25.1%. Over the same year S&P 500 (SPY) returned +14.4%.
The deepest decline was −26.1%, from Nov 25, 2024 to Apr 8, 2025, and it took 5 months to get back to the old high. Volatility has been 18.9% a year.
Related: SEIS chart, SEIS holdings, SEIS dividends, SEIS valuation. See the SEIS overview for the latest quote and fund facts.
SEIS performance FAQ
What is the SEIS return over the past year?
SEIS returned +12.7% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it rose 12.3%.
How much would $10,000 invested in SEIS be worth?
$10,000 invested in SEIS at its first recorded close on October 10, 2024 would be worth about $12,513 on October 23, 2026 with distributions reinvested.
What is the biggest drawdown of SEIS?
The largest peak-to-trough decline was −26.1% between November 25, 2024 and April 8, 2025. It recovered to the old high on September 11, 2025, 5 months after the bottom.
How volatile is SEIS?
Over the past history SEIS had an annualized volatility of 18.9% and a Sharpe ratio of 0.49 (excess return over 1–3 month T-bills per unit of risk).