MFS Active Intermediate Muni Bond ETF (MFSM) Performance
MFSM total return
Distributions reinvested · as of Oct 23, 2026- YTD
- −0.8% since Dec 31, 2025
- 1 year
- −0.2% total return
- Since first price
- +3.1% since 2024
MFSM trailing returns vs AGG, TLT, SPY
| Period | MFSM total return | Price only | U.S. bonds (AGG) | 20+ yr Treasuries (TLT) | S&P 500 (SPY) |
|---|---|---|---|---|---|
| 1 month | +1.6% | +1.2% | +0.9% | +1.5% | −1.0% |
| 3 months | −1.2% | −2.1% | −0.4% | −1.0% | +3.2% |
| 6 months | −2.1% | −3.8% | −1.5% | −3.8% | +7.8% |
| YTD | −0.8% | −3.4% | −1.0% | −3.4% | +12.3% |
| 1 year | −0.2% | −3.7% | −1.1% | −6.9% | +14.4% |
| Since inceptionDec 5, 2024 | +3.1% | −3.4% | — | — | — |
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: MFSM vs AGG
From Dec 5, 2024: MFSM grew to $10,308, AGG to $10,419.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
MFSM returns by calendar year
1 of 1 full years positive. Best 2025 (+5.2%), worst 2025 (+5.2%). 2026 is year to date.
MFSM annual returns table
| Year | MFSM | Largest drop | AGG | TLT | SPY |
|---|---|---|---|---|---|
| 2026YTD | −0.8% | −6.7% | −1.0% | −3.4% | +12.3% |
| 2025 | +5.2% | −3.9% | +7.2% | +4.3% | +17.7% |
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.
MFSM largest drawdowns
Now 3.2% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Jul 6, 2026 | −6.7% | Sep 29, 2026 | not yet | 3 months | 4 months so far |
Declines from a closing high (distributions reinvested) of 5% or more. Underwater = time from the peak until the old high was regained.
MFSM risk statistics
| Statistic | Since 2024 |
|---|---|
| Annualized return | +0.8% |
| Volatility (annualized) | 4.8% |
| Sharpe ratio | -0.60 |
| Sortino ratio | -0.67 |
| Best month | +1.9% |
| Worst month | −4.1% |
| Best 12 months | +7.3% |
| Worst 12 months | −1.9% |
| Positive months | 62% |
| 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.
MFSM rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 11 | −1.9% | +5.2% | +7.3% | 82% |
Every holding period starting at a month-end since 2024. Returns for 3 years and longer are annualized.
MFSM performance overview
MFS Active Intermediate Muni Bond ETF (MFSM) returned −0.2% over the past year, with distributions reinvested. Since its first recorded price on Dec 5, 2024 it has returned +3.1%. Over the same year U.S. bonds (AGG) returned −1.1%.
The deepest decline was −6.7%, from Jul 6, 2026 to Sep 29, 2026; the fund has not yet regained that high. Volatility has been 4.8% a year.
Related: MFSM chart, MFSM dividends, MFSM bond profile. See the MFSM overview for the latest quote and fund facts.
MFSM performance FAQ
What is the MFSM return over the past year?
MFSM returned −0.2% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it fell 3.7%.
How much would $10,000 invested in MFSM be worth?
$10,000 invested in MFSM at its first recorded close on December 5, 2024 would be worth about $10,308 on October 23, 2026 with distributions reinvested.
What is the biggest drawdown of MFSM?
The largest peak-to-trough decline was −6.7% between July 6, 2026 and September 29, 2026. It has not yet recovered to that high; it is 3.2% below its peak.
How volatile is MFSM?
Over the past history MFSM had an annualized volatility of 4.8% and a Sharpe ratio of -0.60 (excess return over 1–3 month T-bills per unit of risk).