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MFS Active Intermediate Muni Bond ETF (MFSM)
Performance
Return for Risk
Dividends
Drawdowns
Volatility

ETF Info

Issuer
MFS
Inception Date
Dec 5, 2024
Region
North America (U.S.)
Leveraged
1x (No leverage)
Index Tracked
No Index (Active)
Domicile
United States
Distribution Policy
Distributing
Asset Class
Bond
Assets Under Management
$83M

Share Price Chart


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Performance

MFSM Performance Chart

MFS Active Intermediate Muni Bond ETF (MFSM) is up 1.1% since the beginning of the year. MFSM is currently trading at $25 per share.


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S&P 500 Index

Returns By Period

MFS Active Intermediate Muni Bond ETF (MFSM) has returned 1.06% so far this year and 7.69% over the past 12 months.


MFS Active Intermediate Muni Bond ETF

1D
0.08%
1M
-0.01%
YTD
1.06%
6M
1.83%
1Y
7.69%
3Y*
5Y*
10Y*

Benchmark (S&P 500 Index)

1D
0.26%
1M
4.84%
YTD
2.86%
6M
6.22%
1Y
33.47%
3Y*
19.26%
5Y*
10.96%
10Y*
12.89%
*Multi-year figures are annualized to reflect compound growth (CAGR)

MFSM Monthly Returns History

Based on dividend-adjusted daily data since Dec 5, 2024, MFSM's average daily return is +0.01%, while the average monthly return is +0.29%. At this rate, an investment would double in approximately 19.9 years.

Historically, 65% of months were positive and 35% were negative. The best month was Sep 2025 with a return of +1.9%, while the worst month was Mar 2026 at -2.0%. The longest winning streak lasted 7 consecutive months, and the longest losing streak was 3 months.

On a daily basis, MFSM closed higher 56% of trading days. The best single day was Sep 5, 2025 with a return of +0.6%, while the worst single day was Apr 7, 2025 at -1.9%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20260.80%1.39%-2.04%0.95%1.06%
20250.56%1.11%-0.96%-0.68%-0.31%1.14%-0.24%0.84%1.94%1.18%0.24%0.35%5.25%
2024-1.30%-1.30%

Benchmark Metrics

MFS Active Intermediate Muni Bond ETF has an annualized alpha of 3.29%, beta of 0.03, and R² of 0.03 versus S&P 500 Index. Calculated based on daily prices since December 06, 2024.

  • This ETF participates in less of S&P 500 Index's moves in both directions, but captures a larger share of gains (18.67%) than losses (14.19%) — typical of diversified or defensive assets.
  • Beta of 0.03 may look defensive, but with R² of 0.03 this ETF is largely uncorrelated with S&P 500 Index — low beta reflects independence, not downside protection. See the Volatility section for a true picture of this ETF's risk.
  • R² of 0.03 means this ETF moves largely independently of S&P 500 Index — capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.

Alpha
3.29%
Beta
0.03
0.03
Upside Capture
18.67%
Downside Capture
14.19%

Expense Ratio

MFSM has an expense ratio of 0.34%, placing it in the medium range.


Return for Risk

Risk / Return Rank

MFSM ranks 74 for risk / return — better than 74% of ETFs on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.


MFSM Risk / Return Rank: 7474
Overall Rank
MFSM Sharpe Ratio Rank: 7979
Sharpe Ratio Rank
MFSM Sortino Ratio Rank: 8787
Sortino Ratio Rank
MFSM Omega Ratio Rank: 8787
Omega Ratio Rank
MFSM Calmar Ratio Rank: 5252
Calmar Ratio Rank
MFSM Martin Ratio Rank: 6666
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

Return / Risk — by metrics

The table below present risk-adjusted performance metrics for MFS Active Intermediate Muni Bond ETF (MFSM) and compare them to a chosen benchmark (S&P 500 Index).


MFSMBenchmarkDifference

Sharpe ratio

Return per unit of total volatility

2.83

2.59

+0.24

Sortino ratio

Return per unit of downside risk

4.33

3.60

+0.73

Omega ratio

Gain probability vs. loss probability

1.60

1.48

+0.11

Calmar ratio

Return relative to maximum drawdown

3.12

3.33

-0.20

Martin ratio

Return relative to average drawdown

13.80

15.04

-1.24

Explore MFSM risk-adjusted metrics in detail

Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.

Dividends

Dividend History

MFS Active Intermediate Muni Bond ETF provided a 3.58% dividend yield over the last twelve months, with an annual payout of $0.90 per share.


0.00%1.00%2.00%3.00%4.00%$0.00$0.20$0.40$0.60$0.8020242025
Dividends
Dividend Yield
PeriodTTM20252024
Dividend$0.90$0.88$0.06

Dividend yield

3.58%3.53%0.23%

Monthly Dividends

The table displays the monthly dividend distributions for MFS Active Intermediate Muni Bond ETF. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$0.07$0.06$0.08$0.00$0.22
2025$0.07$0.07$0.07$0.08$0.08$0.07$0.08$0.08$0.08$0.08$0.08$0.07$0.88
2024$0.06$0.06

Drawdowns

Drawdowns Chart

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.


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Worst Drawdowns

The table below displays the maximum drawdowns of the MFS Active Intermediate Muni Bond ETF. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the MFS Active Intermediate Muni Bond ETF was 3.86%, occurring on Apr 11, 2025. Recovery took 100 trading sessions.

The current MFS Active Intermediate Muni Bond ETF drawdown is 1.17%.


Depth

Start

To Bottom

Bottom

To Recover

End

Total

-3.86%Mar 4, 202529Apr 11, 2025100Sep 5, 2025129
-2.65%Feb 27, 202620Mar 26, 2026
-2.09%Dec 10, 202423Jan 14, 202528Feb 25, 202551
-0.4%Jan 16, 20262Jan 20, 20264Jan 26, 20266
-0.32%Nov 12, 20253Nov 14, 20258Nov 26, 202511

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

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