MMIBX Mutual Fund

MMIBX Mutual Fund

NAV$8.06
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Fund Essentials - as of Mar 31, 2026

Net Assets
$225,415.14
Expense Ratio
1.54%
Dividend Yield (Current)
2.76%
Holdings
2,292
Inception Date
Dec 29, 1986
Fund Family
MFS Investment Management
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD+0.52%
1 Year+5.65%
3 Year+2.97%
5 Year-0.41%
10 Year+1.34%

Asset Allocation

Bonds: 97.56%
Cash: 2.44%
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Top Holdings

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TickerNameWeight
-Mfs Institutional Money Market Portfolio2.42%
-Black Belt Energy Gas Dist Ala Gas Proj Rev Bds 12/01/20340.53%
TX TMGUTL 01/01/2054Texas St Muni Gas Acquisition & Sply Corp Iv Variable Rate, Due 01/01/20540.47%
TX PRISCD 5.25 02/15Princeton Independent School District 5.25 02/15/20550.43%
NY NYTTRN 5.25 06/30New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, John F Kennedy International Airport New Terminal 1 Project0.42%
Top 10 Concentration: 6.21%Report Date: Mar 31, 2026
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Dividend Summary

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Dividend Yield (Current)
2.76%
Frequency
Monthly
Latest Distribution
$0.01
-

Peer Comparison

Benchmark
PRO
Peer outperformance: PRO
Category rank: PRO
This Mutual Fund
PRO
Peer Avg
PRO

MMIBX Mutual Fund Overview

MMIBX Mutual Fund (MFS Municipal Income Fund Class B) is managed by MFS Investment Management with $225,415.14 in net assets. MMIBX expense ratio is 1.54%, holding 2292 positions across sectors including Financials, Utilities, Real Estate. Inception date: 1986-12-29.

MMIBX performance shows a YTD return of 0.52%. The 1-year return is 5.65% and the 5-year return is -0.41%. MMIBX dividend yield stands at 2.76%, paid monthly.

MMIBX top holdings include Mfs Institutional Money Market Portfolio (2.4%), Black Belt Energy Gas Dist Ala Gas Proj Rev Bds 12/01/2034 (0.5%), Texas St Muni Gas Acquisition & Sply Corp Iv Variable Rate, Due 01/01/2054 (0.5%), Princeton Independent School District 5.25 02/15/2055 (0.4%), New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, John F Kennedy International Airport New Terminal 1 Project (0.4%). Go to all MMIBX holdings, MMIBX sectors, or MMIBX dividends.

MMIBX can be compared against other funds. Use MMIBX overlap to find shared positions, or MMIBX vs another fund for a side-by-side view. MMIBX alternatives are available via the screener, along with tax-loss harvesting opportunities.