MFS Total Return Bond R1 (MRBGX)

Fund Assets	7.78B
Expense Ratio	1.483%
Min. Investment	$0.00
Turnover	48.00%
Dividend (ttm)	0.30
Dividend Yield	3.27%
Dividend Growth	-6.36%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	9.17
YTD Return	-2.73%
1-Year Return	-2.54%
5-Year Return	-6.57%
52-Week Low	9.12
52-Week High	9.78
Beta (5Y)	0.27
Holdings	1077
Inception Date	Apr 1, 2005

About MRBGX

MFS Total Return Bond Fund R1 is an actively managed mutual fund specializing in U.S. dollar-denominated fixed-income investments. Its primary objective is to achieve a total return with a strong emphasis on current income, while also considering the potential for capital appreciation. The fund predominantly invests at least 80% of its assets in a broad array of debt securities, including investment-grade corporate bonds, U.S. government and agency issues, mortgage-backed securities, and selected below investment-grade instruments. By maintaining a core-plus strategy, the fund has flexibility to allocate across multiple bond sectors—such as high-yield, emerging market debt, and non-U.S. currency exposure—providing opportunities for yield and diversification beyond traditional core bonds. Managed through a collaborative approach combining macroeconomic assessment, security selection, and yield curve positioning, the fund aims to optimize risk-adjusted returns within the intermediate-term bond space. MFS Total Return Bond Fund R1 plays a key role for investors seeking diversified exposure to the U.S. fixed-income market, balancing income generation with a disciplined risk management framework.

• Fund Family: MFS
• Category: Intermediate Core-Plus Bond
• Performance Rating: Low
• Risk Rating: Average
• Stock Exchange: Nasdaq
• Ticker Symbol: MRBGX
• Share Class: R1
• Index: Bloomberg U.S. Aggregate Bond TR

Performance

MRBGX had a total return of -2.54% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.16%.

Equivalent Funds

These are funds that follow the same index from the other major fund companies.

Symbol	Provider	Name	Expense Ratio
FGBPX	Fidelity	Fidelity Advisor Investment Gr Bd I	0.50%
FSMTX	Fidelity	Fidelity SAI Total Bond Fund	0.29%
FGBCX	Fidelity	Fidelity Advisor Investment Gr Bd C	1.52%
FGBTX	Fidelity	Fidelity Advisor Investment Gr Bd M	0.74%
FTKFX	Fidelity	Fidelity Total Bond K6 Fund	0.30%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
MRBKX	R6	0.36%
MRBJX	R4	0.45%
MRBIX	I	0.45%
MRBFX	A	0.60%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 30, 2026	$0.02687	Oct 1, 2026
Aug 31, 2026	$0.02542	Sep 1, 2026
Jul 31, 2026	$0.02531	Aug 3, 2026
Jun 30, 2026	$0.02434	Jul 1, 2026
May 29, 2026	$0.02428	Jun 1, 2026
Apr 30, 2026	$0.02277	May 1, 2026

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 15, 2026

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