MFS Active Mid Cap ETF (MMID) Performance
MMID total return
Distributions reinvested · as of Oct 23, 2026- YTD
- +8.9% since Dec 31, 2025
- 1 year
- +9.2% total return
- Since first price
- +10.5% since 2025
MMID trailing returns vs SPY, QQQ, AGG
| Period | MMID total return | Price only | S&P 500 (SPY) | Nasdaq-100 (QQQ) | U.S. bonds (AGG) |
|---|---|---|---|---|---|
| 1 month | +3.9% | +3.6% | −1.0% | −5.0% | +0.9% |
| 3 months | +3.6% | +3.3% | +3.2% | +1.9% | −0.4% |
| 6 months | +6.0% | +5.4% | +7.8% | +8.4% | −1.5% |
| YTD | +8.9% | +8.1% | +12.3% | +15.1% | −1.0% |
| 1 year | +9.2% | +8.1% | +14.4% | +15.9% | −1.1% |
| Since inceptionSep 24, 2025 | +10.5% | +9.4% | — | — | — |
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: MMID vs SPY
From Sep 24, 2025: MMID grew to $11,052, SPY to $11,620.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
MMID returns by calendar year
2026 is year to date.
MMID annual returns table
| Year | MMID | Largest drop | SPY | QQQ | AGG |
|---|---|---|---|---|---|
| 2026YTD | +8.9% | −7.9% | +12.3% | +15.1% | −1.0% |
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.
MMID risk statistics
| Statistic | Since 2025 |
|---|---|
| Annualized return | +3.7% |
| Volatility (annualized) | 10.9% |
| Sharpe ratio | 0.05 |
| Sortino ratio | 0.06 |
| Best month | +4.0% |
| Worst month | −5.8% |
| Best 12 months | +3.7% |
| Worst 12 months | +3.7% |
| Positive months | 67% |
| 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.
MMID rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 2 | +3.7% | +7.5% | +11.3% | 100% |
Every holding period starting at a month-end since 2025. Returns for 3 years and longer are annualized.
MMID performance overview
MFS Active Mid Cap ETF (MMID) returned +9.2% over the past year, with distributions reinvested. Since its first recorded price on Sep 24, 2025 it has returned +10.5%. Over the same year S&P 500 (SPY) returned +14.4%.
Related: MMID chart, MMID holdings, MMID dividends, MMID valuation. See the MMID overview for the latest quote and fund facts.
MMID performance FAQ
What is the MMID return over the past year?
MMID returned +9.2% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it rose 8.1%.
How much would $10,000 invested in MMID be worth?
$10,000 invested in MMID at its first recorded close on September 24, 2025 would be worth about $11,052 on October 23, 2026 with distributions reinvested.
How volatile is MMID?
Over the past history MMID had an annualized volatility of 10.9% and a Sharpe ratio of 0.05 (excess return over 1–3 month T-bills per unit of risk).