MRBIX Mutual Fund

MRBIX Mutual Fund

NAV$9.44
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Fund Essentials - as of Jan 31, 2026

Net Assets
$1.9B
Expense Ratio
0.45%
Dividend Yield (Current)
3.86%
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-0.28%
1 Year+2.88%
3 Year+4.34%
5 Year+0.04%
10 Year+1.92%

Asset Allocation

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

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TickerNameWeight
T 4.125 02/15/27Us Treasury Note 4.125% Feb 15 273.85%
T 4.75 11/15/43Us Treas Bds 4.75% 11/15/432.12%
T 4.25 06/30/29United States Treasuryu.S. Treasury Notes2.04%
T 4.25 02/15/54Treasury Bond 4.25 02/15/20541.97%
T 4.25 11/15/34Us Treas Nts 4.25% 11/15/341.89%
Top 10 Concentration: 17.40%Report Date: Jan 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.86%
Frequency
Monthly
Latest Distribution
$0.02
-

Peer Comparison

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

MRBIX Mutual Fund Overview

MRBIX Mutual Fund (MFS Total Return Bond Fund Class I) is managed by MFS Investment Management with $1.85B in net assets. MRBIX expense ratio is 0.45%, holding 1075 positions across sectors including Financials, Energy, Industrials. Inception date: 1999-01-04.

MRBIX performance shows a YTD return of -0.28%. The 1-year return is 2.88% and the 5-year return is 0.04%. MRBIX dividend yield stands at 3.86%, paid monthly.

MRBIX top holdings include Us Treasury Note 4.125% Feb 15 27 (3.9%), Us Treas Bds 4.75% 11/15/43 (2.1%), United States Treasuryu.S. Treasury Notes (2.0%), Treasury Bond 4.25 02/15/2054 (2.0%), Us Treas Nts 4.25% 11/15/34 (1.9%). Go to all MRBIX holdings, MRBIX sectors, or MRBIX dividends.

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