MRBBX Mutual Fund

MRBBX Mutual Fund

NAV$9.28
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Fund Essentials - as of Aug 31, 2026

Net Assets
$335,078.26
Expense Ratio
1.35%
Dividend Yield (Current)
3.04%
Holdings
1,089
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-1.07%
1 Year-1.02%
3 Year+5.03%
5 Year-0.70%
10 Year+1.03%

Asset Allocation

Bonds: 85.48%
Cash: 1.61%
Other: 12.91%
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Top Holdings

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TickerNameWeight
-5 Year Treasury Note Future Dec 264.78%
-2 Year Treasury Note Future Dec 264.38%
-Ultra Us Treasury Bond Future Dec 262.05%
T 4.75 11/15/43Us Treas Bds 4.75% 11/15/431.84%
T 4.25 06/30/29United States Treasuryu.S. Treasury Notes1.80%
Top 10 Concentration: 21.82%Report Date: Aug 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.04%
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 $335,078.26 in net assets. MRBBX expense ratio is 1.35%, holding 1089 positions across sectors including Financials, Energy, Industrials. Inception date: 2000-12-29.

MRBBX performance shows a YTD return of -1.07%. The 1-year return is -1.02% and the 5-year return is -0.70%. MRBBX dividend yield stands at 3.04%, paid monthly.

MRBBX top holdings include 5 Year Treasury Note Future Dec 26 (4.8%), 2 Year Treasury Note Future Dec 26 (4.4%), Ultra Us Treasury Bond Future Dec 26 (2.0%), Us Treas Bds 4.75% 11/15/43 (1.8%), United States Treasuryu.S. Treasury Notes (1.8%). 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.