MRBKX Mutual Fund

MRBKX Mutual Fund

NAV$9.45
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Fund Essentials - as of Jan 31, 2026

Net Assets
$4.0B
Expense Ratio
0.36%
Dividend Yield (Current)
3.95%
Holdings
1,075
Inception Date
May 1, 2006
Fund Family
MFS Investment Management
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD-0.23%
1 Year+2.98%
3 Year+4.44%
5 Year+0.14%
10 Year+2.05%

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)
3.95%
Frequency
Monthly
Latest Distribution
$0.02
-

Peer Comparison

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

MRBKX Mutual Fund Overview

MRBKX Mutual Fund (MFS Total Return Bond Fund Class R6) is managed by MFS Investment Management with $4.01B in net assets. MRBKX expense ratio is 0.36%, holding 1075 positions across sectors including Financials, Energy, Industrials. Inception date: 2006-05-01.

MRBKX performance shows a YTD return of -0.23%. The 1-year return is 2.98% and the 5-year return is 0.14%. MRBKX dividend yield stands at 3.95%, paid monthly.

MRBKX 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 MRBKX holdings, MRBKX sectors, or MRBKX dividends.

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