MMIBX Mutual Fund

MMIBX Mutual Fund

NAV$7.69
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Fund Essentials - as of Jul 31, 2026

Net Assets
$173,458.02
Expense Ratio
1.54%
Dividend Yield (Current)
3.23%
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-4.43%
1 Year-3.25%
3 Year+3.33%
5 Year-0.37%
10 Year+1.29%

Asset Allocation

Bonds: 95.44%
Cash: 4.41%
Other: 0.15%
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Top Holdings

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TickerNameWeight
-Mfs Institutional Money Market Portfolio2.74%
-Cash & Cash Equivalents2.25%
-Black Belt Energy Gas District Al Ser A 5.000 Dec 01 340.52%
-Texas Municipal Gas Acquisition & Supply Corp Iv Tx Ser B 5.500 Jan 01 540.45%
TX PRISCD 5.25 02/15Princeton Independent School District 5.25 02/15/20550.43%
Top 10 Concentration: 8.35%Report Date: Jul 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.23%
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 $173,458.02 in net assets. MMIBX expense ratio is 1.54%, holding 2292 positions across sectors including Financials, Real Estate, Utilities. Inception date: 1986-12-29.

MMIBX performance shows a YTD return of -4.43%. The 1-year return is -3.25% and the 5-year return is -0.37%. MMIBX dividend yield stands at 3.23%, paid monthly.

MMIBX top holdings include Mfs Institutional Money Market Portfolio (2.7%), Cash & Cash Equivalents (2.3%), Black Belt Energy Gas District Al Ser A 5.000 Dec 01 34 (0.5%), Texas Municipal Gas Acquisition & Supply Corp Iv Tx Ser B 5.500 Jan 01 54 (0.5%), Princeton Independent School District 5.25 02/15/2055 (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.