Morningstar

MFS Municipal Income Fund Class I MIMIX

Morningstar Medalist Rating
Medalist Rating as of | See MFS Investment Hub
  • NAV / 1-Day Return 8.06  /  −0.37 %
  • Total Assets 7.1B
  • Adj. Expense Ratio
    0.540%
  • Expense Ratio 0.530%
  • Distribution Fee Level Average
  • Share Class Type Institutional
  • Category Muni National Long
  • Credit Quality / Interest Rate Sensitivity —
  • Min. Initial Investment 0
  • Status Open
  • TTM Yield 4.02%
  • Effective Duration 8.33 years

USD | NAV as of Aug 19, 2026 | 1-Day Return as of Aug 19, 2026, 1:32 AM GMT+0

Morningstar’s Analysis MIMIX

Will MIMIX outperform in the future?

Get our overall rating based on a fundamental assessment of the pillars below.

  • Process Pillar

    The Process Pillar is our assessment of how sensible, clearly defined, and repeatable MIMIX’s performance objective and investment process is for both security selection and portfolio construction.

  • People Pillar

    The People Pillar is our evaluation of the MIMIX management team’s experience and ability. We find that high-quality management teams deliver superior performance relative to their benchmarks and/or peers.

  • Parent Pillar

    The Parent Pillar is our rating of MIMIX’s parent organization’s priorities and whether they’re in line with investors’ interests.

A solid pick at the long end of the muni curve.

Associate Director Tom Murphy

Tom Murphy

Associate Director

Summary

MFS Municipal Income’s experienced team follows a relative value framework that has delivered for investors over the long haul.

by Tom Murphy
Rated on Published on

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Portfolio Holdings MIMIX

More MIMIX Holdings
  • Current Portfolio Date
  • Equity Holdings —
  • Bond Holdings —
  • Other Holdings —
  • % Assets in Top 10 Holdings 4.1
Top 10 Holdings
% Portfolio Weight
Market Value USD
Sector

Currency Cash CASH_USD

1.87 135M
Cash and Equivalents

BLACK BELT ENERGY GAS DIST ALA GAS PROJ REV 5%

0.52 37M
municipal

TEXAS MUN GAS ACQUISITION & SUPPLY CORP IV GAS SUPPLY REV 5.5%

0.46 33M
municipal

PRINCETON TEX INDPT SCH DIST 5.25%

0.43 31M
municipal

NEW YORK TRANSN DEV CORP SPL FAC REV 5.25%

0.41 30M
municipal

NEW YORK TRANSN DEV CORP SPL FAC REV 5.13%

0.41 30M
municipal

NATIONAL FIN AUTH N H LEASE RENT REV 5.88%

0.40 29M
municipal

CALIFORNIA CMNTY CHOICE FING AUTH CLEAN ENERGY PROJ REV 5.25%

0.39 28M
municipal

BLACK BELT ENERGY GAS DIST ALA GAS PROJ REV 5%

0.36 26M
municipal

BLACK BELT ENERGY GAS DIST ALA GAS PROJ REV 5.5%

0.35 25M
municipal

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