Morningstar

MFS Massachusetts Municipal Bond Fund Class B MBMAX

Morningstar Medalist Rating
Medalist Rating as of | See MFS Investment Hub
  • NAV / 1-Day Return 10.19  /  −0.10 %
  • Total Assets 416.7M
  • Adj. Expense Ratio
    1.570%
  • Expense Ratio 1.570%
  • Distribution Fee Level High
  • Share Class Type Deferred Load
  • Category Muni Massachusetts
  • Credit Quality / Interest Rate Sensitivity Medium/Extensive
  • Min. Initial Investment 1,000
  • Status Closed
  • TTM Yield 2.48%
  • Effective Duration 7.68 years

USD | NAV as of Jul 18, 2026 | 1-Day Return as of Jul 18, 2026, 1:31 AM GMT+0

Morningstar’s Analysis MBMAX

Will MBMAX 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 MBMAX’s performance objective and investment process is for both security selection and portfolio construction.

  • People Pillar

    The People Pillar is our evaluation of the MBMAX 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 MBMAX’s parent organization’s priorities and whether they’re in line with investors’ interests.

null Morningstar Automated Analysis

Morningstar Automated Analysis

Summary

MFS MA Municipal Bond B holds a quantitatively derived Neutral Morningstar Medalist Rating. The rating suggests the model does not express a clear expectation of outperformance or underperformance relative to peers over a full market cycle.

by Morningstar Automated Analysis
Rated on Published on

Unlock our full analysis with Morningstar Investor

Portfolio Holdings MBMAX

More MBMAX Holdings
  • Current Portfolio Date
  • Equity Holdings —
  • Bond Holdings —
  • Other Holdings —
  • % Assets in Top 10 Holdings 11.5
Top 10 Holdings
% Portfolio Weight
Market Value USD
Sector

MASSACHUSETTS ST SCH BLDG AUTH DEDICATED SALES TAX REV 5%

1.54 6M
municipal

MASSACHUSETTS ST DEV FIN AGY REV 5%

1.37 6M
municipal

MASSACHUSETTS ST TRANSN FD REV 5%

1.31 5M
municipal

MASSACHUSETTS ST DEV FIN AGY REV 5.25%

1.26 5M
municipal

MASSACHUSETTS ST CLEAN WTR TR 5%

1.05 4M
municipal

MASSACHUSETTS BAY TRANSN AUTH MASS SALES TAX REV 5.25%

1.05 4M
municipal

MASSACHUSETTS ST 5%

1.03 4M
municipal

MASSACHUSETTS ST TRANSN FD REV 5%

1.02 4M
municipal

TRI-CNTY REGL VOCATIONAL TECHNICAL SCH DIST MASS 4%

0.97 4M
municipal

PUERTO RICO SALES TAX FING CORP SALES TAX REV 5%

0.92 4M
municipal

Sponsor Center