MMIBX Mutual Fund

MMIBX Mutual Fund

NAV$7.97
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Fund Essentials - as of Aug 31, 2026

Net Assets
$159,210.3
Expense Ratio
1.54%
Dividend Yield (Current)
2.87%
Holdings
2,375
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-1.43%
1 Year-1.31%
3 Year+4.54%
5 Year-0.42%
10 Year+1.09%

Asset Allocation

Stocks: 0.02%
Bonds: 95.57%
Cash: 4.23%
Other: 0.18%
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Top Holdings

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TickerNameWeight
-Mfs Institutional Money Market Portfolio2.66%
-Cash & Cash Equivalents2.16%
-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%
NY NYTTRN 5.12 06/30New York Transportation Development Corp 5.125 06/30/20600.41%
Top 10 Concentration: 8.18%Report Date: Aug 31, 2026
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Dividend Summary

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Dividend Yield (Current)
2.87%
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 $159,210.3 in net assets. MMIBX expense ratio is 1.54%, holding 2375 positions across sectors including Financials, Real Estate, Utilities. Inception date: 1986-12-29.

MMIBX performance shows a YTD return of -1.43%. The 1-year return is -1.31% and the 5-year return is -0.42%. MMIBX dividend yield stands at 2.87%, paid monthly.

MMIBX top holdings include Mfs Institutional Money Market Portfolio (2.7%), Cash & Cash Equivalents (2.2%), 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%), New York Transportation Development Corp 5.125 06/30/2060 (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.