MFS Municipal High Income Fund A (MMHYX)
7.16
-0.03
(-0.42%)
USD |
Sep 15 2026
Returns Chart
Key Stats
| Net Expense Ratio | Total Assets Under Management | Weighted Average Dividend Yield | Turnover Ratio (Generic) |
|---|---|---|---|
| 0.66% | 5.389B | -- | 9.00% |
| 1 Year Fund Level Flows | 1 Year Total Returns (Daily) | Annualized Total Returns Since Inception (Daily) | Max Drawdown (Since Inception) |
| 409.64M | 1.27% |
Basic Info
| Investment Strategy | |
| The Fund seeks total return with an emphasis on high income exempt from federal income tax, but also considering capital appreciation. The Fund invests, under normal market conditions, at least 80% of its net assets in securities and other investments, the interest on which is exempt from federal income tax. |
| General | |
| Security Type | Mutual Fund |
| Equity Style | -- |
| Broad Asset Class | Municipal Bond |
| Broad Category | Fixed Income |
| Global Peer Group | Bond USD Municipal High Yield |
| Peer Group | High Yield Municipal Debt Funds |
| Global Macro | Bond High Yield |
| US Macro | National Municipal Debt Funds |
| YCharts Categorization | -- |
| YCharts Benchmark | -- |
| Prospectus Objective | High Yield Municipal Debt Funds |
| Fund Owner Firm Name | MFS |
| Broad Asset Class Benchmark Index | |
| ^BBMBTR | 100.0% |
Net Fund Flows Versus Peer Group
1 Month
% Rank:
44
-152.26M
Peer Group Low
200.46M
Peer Group High
1 Year
% Rank:
21
409.64M
-1.158B
Peer Group Low
2.261B
Peer Group High
3 Months
% Rank:
42
-313.41M
Peer Group Low
507.46M
Peer Group High
3 Years
% Rank:
24
-6.234B
Peer Group Low
7.040B
Peer Group High
6 Months
% Rank:
18
-999.24M
Peer Group Low
1.232B
Peer Group High
5 Years
% Rank:
83
-9.920B
Peer Group Low
9.387B
Peer Group High
YTD
% Rank:
21
-475.95M
Peer Group Low
1.400B
Peer Group High
10 Years
% Rank:
36
-4.775B
Peer Group Low
13.87B
Peer Group High
Date Unavailable
Risk
Performance Versus Peer Group
Annual Total Returns Versus Peers
As of September 16, 2026.
Asset Allocation
As of July 31, 2026.
| Type | % Net |
|---|---|
| Cash | 2.13% |
| Stock | 0.00% |
| Bond | 97.87% |
| Convertible | 0.00% |
| Preferred | 0.00% |
| Other | 0.00% |
Top 10 Holdings
| Name | % Weight | Price | % Change |
|---|---|---|---|
|
USD Cash
|
2.13% | -- | -- |
| PUERTO RICO SALES TAX FING CORP SALES TAX REV PR 5.000 07/01/2058 | 1.78% | 93.50 | -0.61% |
| BERKS CNTY PA MUN AUTH REV PA 5.000 06/30/2039 | 0.58% | 92.17 | 1.86% |
| BUCKEYE OHIO TOB SETTLEMENT FING AUTH OH 5.000 06/01/2055 | 0.54% | 74.62 | -1.30% |
| BLACK BELT ENERGY GAS DIST ALA GAS PROJ REV AL 5.250 06/01/2036 | 0.50% | 104.01 | 0.27% |
| CALIFORNIA CMNTY CHOICE FING AUTH CLEAN ENERGY PROJ REV CA 5.250 01/01/2054 | 0.49% | 103.40 | -0.18% |
| NEW YORK TRANSN DEV CORP SPL FAC REV NY 5.125 06/30/2060 | 0.44% | 95.02 | -0.60% |
| NATIONAL FIN AUTH N H LEASE RENT REV NH 5.880 12/15/2038 | 0.43% | 102.71 | 0.00% |
| NEW YORK TRANSN DEV CORP SPL FAC REV NY 5.250 06/30/2060 | 0.42% | 97.08 | -0.60% |
| PUBLIC FIN AUTH WIS HOSP REV WI 5.500 06/01/2055 | 0.41% | 100.35 | -0.27% |
Fees & Availability
| Fees | |
| Actual 12B-1 Fee | -- |
| Actual Management Fee | 0.46% |
| Administration Fee | 195705.0 None |
| Maximum Front Load | 4.25% |
| Maximum Deferred Load | -- |
| Maximum Redemption Fee | 0.00% |
| General Availability | |
| Available for Insurance Product | No |
| Available for RRSP | No |
| Purchase Details | |
| Open to New Investors |
|
| Minimum Initial Investment | 1000.00 None |
| Minimum Subsequent Investment | 50.00 None |
TTM Distributions
| Type | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Qualified Income
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Normal
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Qualified
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
LT Cap Gains
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Ordinary Income
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Non-Qual
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
ST Cap Gains
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Interest
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Tax-Exempt
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
ROC
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Other
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
|
Total
|
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
As of August 31, 2026.
Basic Info
| Investment Strategy | |
| The Fund seeks total return with an emphasis on high income exempt from federal income tax, but also considering capital appreciation. The Fund invests, under normal market conditions, at least 80% of its net assets in securities and other investments, the interest on which is exempt from federal income tax. |
| General | |
| Security Type | Mutual Fund |
| Equity Style | -- |
| Broad Asset Class | Municipal Bond |
| Broad Category | Fixed Income |
| Global Peer Group | Bond USD Municipal High Yield |
| Peer Group | High Yield Municipal Debt Funds |
| Global Macro | Bond High Yield |
| US Macro | National Municipal Debt Funds |
| YCharts Categorization | -- |
| YCharts Benchmark | -- |
| Prospectus Objective | High Yield Municipal Debt Funds |
| Fund Owner Firm Name | MFS |
| Broad Asset Class Benchmark Index | |
| ^BBMBTR | 100.0% |
Fundamentals
| General | |
| Distribution Yield | -- |
| Dividend Yield TTM (9-15-26) | 4.59% |
| 30-Day SEC Yield (8-31-26) | 4.36% |
| 7-Day SEC Yield | -- |
| Number of Holdings | 2140 |
| Bond | |
| Yield to Maturity (7-31-26) | 5.26% |
| Effective Duration | 8.02 |
| Average Coupon | 5.12% |
| Calculated Average Quality | 3.758 |
| Effective Maturity | 15.35 |
| Nominal Maturity | 21.31 |
| Number of Bond Holdings | 2138 |
As of July 31, 2026
Fund Details
Top Portfolio Holders
| Name | % Weight |
|---|---|
| Portfolio A | 5.00% |
| Portfolio B | 3.50% |
| Portfolio C | 2.25% |
Excel Add-In Codes
| Name: =YCI("M:MMHYX", "name") |
| Broad Asset Class: =YCI("M:MMHYX", "broad_asset_class") |
| Broad Category: =YCI("M:MMHYX", "broad_category_group") |
| Prospectus Objective: =YCI("M:MMHYX", "prospectus_objective") |
| To find the codes for any of our securities and financial metrics, see our Complete Excel Reference. |