MRBFX Mutual Fund

NAV$9.42

Fund Essentials - as of Jan 31, 2026

Net Assets
$2.2B
Expense Ratio
0.60%
Dividend Yield (Current)
3.67%
Holdings
1,075
Inception Date
Jan 4, 1999
Fund Family
MFS Investment Management
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD-2.28%
1 Year+3.93%
3 Year+4.74%
5 Year+0.37%
10 Year+2.14%

Asset Allocation

Bonds: 98.66%
Cash: 1.10%
Other: 0.24%

Price Chart (6M)

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Top Holdings

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TickerNameWeight
T 4.125 02/15/27Usa, Notes 4.125% 15Feb20273.85%
T 4.75 11/15/43United States Treasury Note, 4.75%, 11/15/20432.12%
T 4.25 06/30/29Treasury Note (Otr) 4.25% Jun 30, 20292.04%
T 4.25 02/15/54U.S. Treasury Bonds 2054-02-151.97%
T 4.25 11/15/34Treasury Note (Otr) 4.25% Nov 15, 20341.89%
Top 10 Concentration: 17.40%Report Date: Jan 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.67%
Frequency
Monthly
Latest Distribution
$0.02
-

Peer Comparison

Benchmark
PRO
Peer outperformance: PRO
Category rank: PRO
This Mutual Fund
PRO
Peer Avg
PRO
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MRBFX Mutual Fund Overview

MRBFX Mutual Fund (MFS Total Return Bond Fund Class A) is managed by MFS Investment Management with $2.18B in net assets. MRBFX expense ratio is 0.60%, holding 1075 positions across sectors including Financials, Other, Energy. Inception date: 1999-01-04.

MRBFX performance shows a YTD return of -2.28%. The 1-year return is 3.93% and the 5-year return is 0.37%. MRBFX dividend yield stands at 3.67%, paid monthly.

MRBFX top holdings include Usa, Notes 4.125% 15Feb2027 (3.9%), United States Treasury Note, 4.75%, 11/15/2043 (2.1%), Treasury Note (Otr) 4.25% Jun 30, 2029 (2.0%), U.S. Treasury Bonds 2054-02-15 (2.0%), Treasury Note (Otr) 4.25% Nov 15, 2034 (1.9%). View all MRBFX holdings, sector breakdown, or dividend history.

MRBFX can be compared against other funds using the overlap calculator or side-by-side comparison tool. MRBFX alternatives are available via the screener, along with tax-loss harvesting opportunities.