MFS Municipal Income Fund Class B1 (MMIGX)
| Fund Assets | 6.16B |
| Expense Ratio | 1.26% |
| Min. Investment | $1,000 |
| Turnover | 9.00% |
| Dividend (ttm) | 0.23 |
| Dividend Yield | 2.86% |
| Dividend Growth | 4.58% |
| Payout Frequency | Monthly |
| Ex-Dividend Date | Nov 28, 2025 |
| Previous Close | 8.19 |
| YTD Return | 2.95% |
| 1-Year Return | 1.24% |
| 5-Year Return | 3.00% |
| 52-Week Low | 7.60 |
| 52-Week High | 8.22 |
| Beta (5Y) | n/a |
| Holdings | 2132 |
| Inception Date | Jun 25, 2007 |
About MMIGX
MFS Municipal Income Fund Class B1 is a long-duration, actively managed mutual fund focused on generating total return, with an emphasis on income that is exempt from federal income tax. The fund predominantly invests in a diversified portfolio of municipal bonds issued by various U.S. state and local governments to finance public projects, such as infrastructure, schools, and utilities. Its strategy favors investment-grade securities but may also allocate a portion to bonds of lower credit quality, balancing risk and potential returns. Class B1 shares are available to holders who acquired them through a legacy fund acquisition process. As of mid-2025, the fund holds over $5.8 billion in net assets, with municipal holdings comprising the vast majority of its portfolio. The fund employs a risk-aware management approach utilizing both quantitative market tools and experienced analysts to identify and mitigate risks. Income is distributed monthly, and the fund is benchmarked to the Bloomberg Municipal Bond Index, reflecting its alignment with the broader national municipal bond market. MFS brings decades of municipal bond investing experience and seeks to provide consistent, tax-advantaged income for investors.
Performance
MMIGX had a total return of 1.24% in the past year, including dividends. Since the fund's inception, the average annual return has been 6.43%.
Equivalent Funds
These are funds that follow the same index from the other major fund companies.
Top 10 Holdings
6.75% of assets| Name | Symbol | Weight |
|---|---|---|
| MFS Institutional Money Market Portfolio, Class A | n/a | 2.78% |
| Texas Municipal Gas Acquisition & Supply Corp. IV, Series 2023B | TX.TMGUTL 01.01.2054 | 0.54% |
| New York Transportation Development Corp., Series 2024 | n/a | 0.48% |
| New York Transportation Development Corp., Series 2023 | NY.NYTTRN 5.12 06.30.2060 | 0.48% |
| New Hampshire Business Finance Authority, Series 2023A | NH.NFADEV 5.88 12.15.2038 | 0.46% |
| California Community Choice Financing Authority | CA.CCEDEV 01.01.2054 | 0.45% |
| Black Belt Energy Gas District, Series 2023C | AL.BBEUTL 10.01.2054 | 0.42% |
| New Hampshire Business Finance Authority, Series 2025 A | NH.NFADEV 5.5 06.01.2050 | 0.40% |
| Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue - Puerto Rico Sales Tax Financing Corp. Sales Tax | PR.PRCGEN 5 07.01.2058 | 0.38% |
| Virginia Housing Development Authority, Series 2023 D | VA.VASHSG 4.88 08.01.2065 | 0.36% |
Dividend History
| Ex-Dividend | Amount | Pay Date |
|---|---|---|
| Nov 28, 2025 | $0.02117 | Dec 1, 2025 |
| Oct 31, 2025 | $0.02234 | Nov 3, 2025 |
| Sep 30, 2025 | $0.02203 | Oct 1, 2025 |
| Aug 29, 2025 | $0.02204 | Sep 2, 2025 |
| Jul 31, 2025 | $0.02199 | Aug 1, 2025 |
| Jun 30, 2025 | $0.02111 | Jul 1, 2025 |