MFS Municipal High Income Fund I (MMIIX)
7.44
0.00 (0.00%)
USD |
Apr 10 2026
Returns Chart
Key Stats
| Net Expense Ratio | Total Assets Under Management | Weighted Average Dividend Yield | Turnover Ratio (Generic) |
|---|---|---|---|
| 0.61% | 5.399B | -- | 12.00% |
| 1 Year Fund Level Flows | 1 Year Total Returns (Daily) | Annualized Total Returns Since Inception (Daily) | Max Drawdown (Since Inception) |
| 275.67M | 7.26% |
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:
78
-582.88M
Peer Group Low
131.41M
Peer Group High
1 Year
% Rank:
22
275.67M
-2.317B
Peer Group Low
2.506B
Peer Group High
3 Months
% Rank:
27
-346.65M
Peer Group Low
539.88M
Peer Group High
3 Years
% Rank:
35
-6.653B
Peer Group Low
7.237B
Peer Group High
6 Months
% Rank:
17
-834.11M
Peer Group Low
1.214B
Peer Group High
5 Years
% Rank:
88
-7.126B
Peer Group Low
10.86B
Peer Group High
YTD
% Rank:
27
-346.65M
Peer Group Low
539.88M
Peer Group High
10 Years
% Rank:
34
-4.808B
Peer Group Low
15.09B
Peer Group High
Date Unavailable
Risk
Performance Versus Peer Group
Annual Total Returns Versus Peers
As of April 13, 2026.
Asset Allocation
As of February 28, 2026.
| Type | % Net |
|---|---|
| Cash | 3.17% |
| Stock | 0.00% |
| Bond | 96.83% |
| Convertible | 0.00% |
| Preferred | 0.00% |
| Other | 0.00% |
Top 10 Holdings
| Name | % Weight | Price | % Change |
|---|---|---|---|
|
USD CASH
|
3.17% | -- | -- |
| PUERTO RICO SALES TAX FING CORP SALES TAX REV PR 5.000 07/01/2058 | 1.86% | 96.55 | 0.57% |
| BUCKEYE OHIO TOB SETTLEMENT FING AUTH OH 5.000 06/01/2055 | 0.60% | 80.62 | 0.27% |
| BERKS CNTY PA MUN AUTH REV PA 5.000 06/30/2039 | 0.60% | 95.34 | 0.01% |
| CALIFORNIA CMNTY CHOICE FING AUTH CLEAN ENERGY PROJ REV CA 5.250 01/01/2054 | 0.51% | 106.07 | -0.01% |
| NEW YORK TRANSN DEV CORP SPL FAC REV NY 5.125 06/30/2060 | 0.46% | 100.48 | -0.00% |
| NATIONAL FIN AUTH N H LEASE RENT REV NH 5.880 12/15/2038 | 0.45% | 104.15 | -0.00% |
| CHICAGO ILL IL 5.000 01/01/2033 | 0.45% | 103.72 | -0.00% |
| NEW YORK TRANSN DEV CORP SPL FAC REV NY 5.250 06/30/2060 | 0.44% | 101.92 | -0.00% |
| TOBACCO SETTLEMENT AUTH IOWA TOB SETTLEMENT REV IA 0.000 06/01/2065 | 0.43% | 14.20 | 0.04% |
Fees & Availability
| Fees | |
| Actual 12B-1 Fee | -- |
| Actual Management Fee | 0.44% |
| Administration Fee | 258.2K% |
| Maximum Front Load | -- |
| Maximum Deferred Load | -- |
| Maximum Redemption Fee | -- |
| General Availability | |
| Available for Insurance Product | No |
| Available for RRSP | No |
| Purchase Details | |
| Open to New Investors |
|
| Minimum Initial Investment | 0.00 None |
| Minimum Subsequent Investment | 0.00 None |
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 (4-10-26) | 4.34% |
| 30-Day SEC Yield (3-31-26) | 4.54% |
| 7-Day SEC Yield | -- |
| Number of Holdings | 2032 |
| Bond | |
| Yield to Maturity (2-28-26) | 4.95% |
| Effective Duration | 8.05 |
| Average Coupon | 5.10% |
| Calculated Average Quality | 3.793 |
| Effective Maturity | 15.24 |
| Nominal Maturity | 21.64 |
| Number of Bond Holdings | 1996 |
As of February 28, 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:MMIIX", "name") |
| Broad Asset Class: =YCI("M:MMIIX", "broad_asset_class") |
| Broad Category: =YCI("M:MMIIX", "broad_category_group") |
| Prospectus Objective: =YCI("M:MMIIX", "prospectus_objective") |
| To find the codes for any of our securities and financial metrics, see our Complete Excel Reference. |