MRBBX Mutual Fund

MRBBX Mutual Fund

NAV$9.14
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Fund Essentials - as of May 31, 2026

Net Assets
$337,682.98
Expense Ratio
1.35%
Dividend Yield (Current)
3.28%
Holdings
1,075
Inception Date
Dec 29, 2000
Fund Family
MFS Investment Management
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD-0.42%
1 Year+1.22%
3 Year+3.75%
5 Year-0.74%
10 Year+1.05%

Asset Allocation

Stocks: 0.58%
Bonds: 98.56%
Cash: 0.87%
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Top Holdings

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TickerNameWeight
-Ust Bond 2Yr Future Sep 30 265.59%
-Ust Bond 5Yr Future Sep 30 265.47%
-Ust Ultra Bond Future Sep 21 262.41%
-Us Treasury Bond 4.75% Nov 15 432.12%
-Us Treasury Note 4.25% Jun 30 292.07%
Top 10 Concentration: 24.53%Report Date: May 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.28%
Frequency
Monthly
Latest Distribution
$0.01
-

Peer Comparison

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

MRBBX Mutual Fund Overview

MRBBX Mutual Fund (MFS Total Return Bond Fund Class B) is managed by MFS Investment Management with $337,682.98 in net assets. MRBBX expense ratio is 1.35%, holding 1075 positions across various sectors. Inception date: 2000-12-29.

MRBBX performance shows a YTD return of -0.42%. The 1-year return is 1.22% and the 5-year return is -0.74%. MRBBX dividend yield stands at 3.28%, paid monthly.

MRBBX top holdings include Ust Bond 2Yr Future Sep 30 26 (5.6%), Ust Bond 5Yr Future Sep 30 26 (5.5%), Ust Ultra Bond Future Sep 21 26 (2.4%), Us Treasury Bond 4.75% Nov 15 43 (2.1%), Us Treasury Note 4.25% Jun 30 29 (2.1%). Go to all MRBBX holdings, MRBBX sectors, or MRBBX dividends.

MRBBX can be compared against other funds. Use MRBBX overlap to find shared positions, or MRBBX vs another fund for a side-by-side view. MRBBX alternatives are available via the screener, along with tax-loss harvesting opportunities.