Morningstar

MFS Total Return Bond Fund Class A MRBFX

Morningstar Medalist Rating
Medalist Rating as of | See MFS Investment Hub
  • NAV / 1-Day Return 9.46  /  −0.32 %
  • Total Assets 8.2B
  • Adj. Expense Ratio
    0.600%
  • Expense Ratio 0.600%
  • Distribution Fee Level Low
  • Share Class Type Front Load
  • Category Intermediate Core-Plus Bond
  • Credit Quality / Interest Rate Sensitivity Medium/Moderate
  • Min. Initial Investment 1,000
  • Status Open
  • TTM Yield 4.00%
  • Effective Duration 5.82 years

USD | NAV as of Jul 21, 2026 | 1-Day Return as of Jul 21, 2026, 1:54 AM GMT+0

Morningstar’s Analysis MRBFX

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

  • People Pillar

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

Staying the course.

Senior Analyst Elbie Louw

Elbie Louw

Senior Analyst

Summary

MFS Total Return Bond is a well-run core-plus offering overseen by two experienced managers.

by Elbie Louw
Rated on Published on

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Portfolio Holdings MRBFX

More MRBFX Holdings
  • Current Portfolio Date
  • Equity Holdings —
  • Bond Holdings —
  • Other Holdings —
  • % Assets in Top 10 Holdings 25.2
Top 10 Holdings
% Portfolio Weight
Market Value USD
Sector

2 Year Treasury Note Future Sept 26

5.60 460M
Government

5 Year Treasury Note Future Sept 26

5.48 450M
Government

Ultra US Treasury Bond Future Sept 26

2.46 202M
Government

United States Treasury Bonds 4.75%

2.14 176M
Government

United States Treasury Notes 4.25%

2.04 167M
Government

United States Treasury Bonds 4.25%

2.03 166M
Government

Ultra 10 Year US Treasury Note Future Sept 26

1.86 153M
Government

United States Treasury Notes 4.25%

1.24 102M
Government

United States Treasury Bonds 4.38%

1.19 97M
Government

United States Treasury Bonds 4.5%

1.14 94M
Government

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