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ISIN
US5529843048
CUSIP
552984304
Issuer
MFS
Inception Date
Feb 23, 1984
Min. Investment
$1,000
Distribution Policy
Distributing
Asset Class
Bond

Share Price Chart


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Performance

MMHYX Performance Chart

MFS Municipal High Income Fund (MMHYX) is up 2.9% since the beginning of the year. MMHYX is currently trading at $8 per share. Investors who bought $1,000 worth of MMHYX shares 5 years ago would now be looking at an investment worth $1,047.


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S&P 500 Index

Returns By Period

MFS Municipal High Income Fund (MMHYX) has returned 2.93% so far this year and 8.43% over the past 12 months. Over the last ten years, MMHYX has returned 2.81% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.


MFS Municipal High Income Fund

1D
0.13%
1M
2.14%
YTD
2.93%
6M
3.47%
1Y
8.43%
3Y*
5.73%
5Y*
0.93%
10Y*
2.81%

Benchmark (S&P 500 Index)

1D
-0.37%
1M
-0.01%
YTD
9.16%
6M
8.64%
1Y
25.22%
3Y*
19.78%
5Y*
11.99%
10Y*
13.88%
*Multi-year figures are annualized to reflect compound growth (CAGR)

MMHYX Monthly Returns History

Based on dividend-adjusted daily data since Feb 23, 1984, MMHYX's average daily return is +0.02%, while the average monthly return is +0.36%. At this rate, an investment would double in approximately 16.1 years.

Historically, 68% of months were positive and 32% were negative. The best month was Sep 2009 with a return of +7.3%, while the worst month was Mar 2020 at -8.8%. The longest winning streak lasted 20 consecutive months, and the longest losing streak was 6 months.

On a daily basis, MMHYX closed higher 34% of trading days. The best single day was Jul 31, 1984 with a return of +4.8%, while the worst single day was Mar 19, 2020 at -4.0%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20260.78%1.55%-2.02%1.31%0.91%0.40%2.93%
20250.88%1.74%-1.52%-0.92%-0.59%0.64%-1.00%0.66%3.30%1.47%0.36%-0.02%5.02%
20240.52%0.49%0.41%-1.28%0.64%2.75%1.17%1.15%1.66%-1.34%1.90%-1.46%6.72%
20233.71%-2.78%1.47%0.34%-0.59%0.51%0.25%-1.66%-3.43%-2.49%7.15%3.19%5.30%
2022-2.76%-0.94%-3.56%-3.09%0.98%-3.47%2.93%-2.64%-6.00%-1.77%5.60%-0.45%-14.64%
20211.81%-1.04%0.51%1.31%0.95%1.05%1.05%-0.44%-0.90%-0.45%1.16%0.23%5.31%

Benchmark Metrics

MFS Municipal High Income Fund has an annualized alpha of 4.33%, beta of 0.01, and R2 of 0.00 versus S&P 500 Index. Calculated based on daily prices since February 23, 1984.

  • This fund participates in less of S&P 500 Index's moves in both directions, but captures a larger share of gains (16.26%) than losses (4.48%) - typical of diversified or defensive assets.
  • Beta of 0.01 may look defensive, but with R2 of 0.00 this fund 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 fund's risk.
  • R2 of 0.00 means this fund 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
4.33%
Beta
0.01
0.00
Upside Capture
16.26%
Downside Capture
4.48%

Expense Ratio

MMHYX has an expense ratio of 0.61%, placing it in the medium range.


Return for Risk

Risk / Return Rank

MMHYX ranks 76 for risk / return — better than 76% of mutual funds on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.


MMHYX Risk / Return Rank: 7676
Overall Rank
MMHYX Sharpe Ratio Rank: 8383
Sharpe Ratio Rank
MMHYX Sortino Ratio Rank: 9090
Sortino Ratio Rank
MMHYX Omega Ratio Rank: 9090
Omega Ratio Rank
MMHYX Calmar Ratio Rank: 6262
Calmar Ratio Rank
MMHYX Martin Ratio Rank: 5353
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 Municipal High Income Fund (MMHYX) and compare them to S&P 500 Index.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.


MMHYXBenchmarkDifference
Sharpe ratioReturn per unit of total volatility

+0.47

Sortino ratioReturn per unit of downside risk

+1.30

Omega ratioGain probability vs. loss probability

1.62

1.37

+0.25

Calmar ratioReturn relative to maximum drawdown

2.90

2.78

+0.12

Martin ratioReturn relative to average drawdown

10.22

12.44

-2.22

Dividends

Dividend History

MFS Municipal High Income Fund provided a 4.34% dividend yield over the last twelve months, with an annual payout of $0.33 per share. The fund has been increasing its distributions for 3 consecutive years.


3.00%3.50%4.00%4.50%5.00%5.50%$0.00$0.10$0.20$0.30$0.4020152016201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018201720162015
Dividend$0.33$0.43$0.29$0.26$0.22$0.26$0.30$0.34$0.34$0.36$0.35$0.38

Dividend yield

4.34%5.77%3.91%3.59%3.03%2.95%3.57%3.99%4.18%4.38%4.31%4.64%

Monthly Dividends

The table displays the monthly dividend distributions for MFS Municipal High Income Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$0.03$0.03$0.03$0.03$0.03$0.00$0.14
2025$0.06$0.05$0.05$0.05$0.03$0.03$0.03$0.03$0.03$0.03$0.03$0.03$0.43
2024$0.03$0.03$0.00$0.03$0.03$0.00$0.03$0.03$0.03$0.03$0.05$0.03$0.29
2023$0.03$0.02$0.03$0.03$0.03$0.03$0.03$0.00$0.03$0.00$0.03$0.03$0.26
2022$0.02$0.02$0.02$0.02$0.03$0.00$0.00$0.03$0.00$0.03$0.03$0.03$0.22
2021$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.26

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 Municipal High Income Fund. 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 Municipal High Income Fund was 23.28%, occurring on Dec 17, 2008. Recovery took 191 trading sessions.


Related event

Drawdown

Fall

Recovery

Underwater

Financial crisis2007–2009
-23.28%Dec 2008
1y 7mo9mo 9d
2y 4moMay 2007 - Sep 2009
Bear market2022
-19.89%Oct 2022
1y 2mo3y 1mo
4y 3moAug 2021 - Nov 2025
COVID crash2020
-15.70%Mar 2020
18d9mo 22d
10mo 10dMar 2020 - Jan 2021
1988 correction1988
-11.52%Aug 1988
2y 5mo2y 12mo
5y 5moFeb 1986 - Aug 1991
2013 correction2013
-10.56%Sep 2013
3mo 28d8mo 12d
1y 5dMay 2013 - May 2014

Drawdown Indicators


MMHYXBenchmarkDifference

Max Drawdown

Largest peak-to-trough decline

-23.28%

-56.78%

+33.50%

Max Drawdown (1Y)

Largest decline over 1 year

-2.91%

-9.10%

+6.19%

Max Drawdown (3Y)

Largest decline over 3 years

-7.71%

-18.90%

+11.19%

Max Drawdown (5Y)

Largest decline over 5 years

-19.89%

-25.43%

+5.54%

Max Drawdown (10Y)

Largest decline over 10 years

-19.89%

-33.92%

+14.03%

Current Drawdown

Current decline from peak

0.00%

-1.80%

+1.80%

Average Drawdown

Average peak-to-trough decline

-2.88%

-10.71%

+7.83%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.83%

2.03%

-1.20%

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

Build a portfolio with MMHYX

Add MFS Municipal High Income Fund to a portfolio and analyze allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.

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