- ISIN
- US5529843048
- CUSIP
- 552984304
- Issuer
- MFS
- Inception Date
- Feb 23, 1984
- Category
- High Yield Muni
- 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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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%
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%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.78% | 1.55% | -2.02% | 1.31% | 0.91% | 0.40% | 2.93% | ||||||
| 2025 | 0.88% | 1.74% | -1.52% | -0.92% | -0.59% | 0.64% | -1.00% | 0.66% | 3.30% | 1.47% | 0.36% | -0.02% | 5.02% |
| 2024 | 0.52% | 0.49% | 0.41% | -1.28% | 0.64% | 2.75% | 1.17% | 1.15% | 1.66% | -1.34% | 1.90% | -1.46% | 6.72% |
| 2023 | 3.71% | -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% |
| 2021 | 1.81% | -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
- R²
- 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.
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.
| MMHYX | Benchmark | Difference | |
|---|---|---|---|
| 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.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 7mo | 9mo 9d | 2y 4moMay 2007 - Sep 2009 |
Bear market2022 | -19.89%Oct 2022 | 1y 2mo | 3y 1mo | 4y 3moAug 2021 - Nov 2025 |
COVID crash2020 | -15.70%Mar 2020 | 18d | 9mo 22d | 10mo 10dMar 2020 - Jan 2021 |
1988 correction1988 | -11.52%Aug 1988 | 2y 5mo | 2y 12mo | 5y 5moFeb 1986 - Aug 1991 |
2013 correction2013 | -10.56%Sep 2013 | 3mo 28d | 8mo 12d | 1y 5dMay 2013 - May 2014 |
Drawdown Indicators
| MMHYX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest 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 DrawdownCurrent decline from peak | 0.00% | -1.80% | +1.80% |
Average DrawdownAverage peak-to-trough decline | -2.88% | -10.71% | +7.83% |
Ulcer IndexDepth 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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