MFS Total Return Bond Fund Class B (MRBBX)

Fund Assets	7.78B
Expense Ratio	1.324%
Min. Investment	$1,000
Turnover	48.00%
Dividend (ttm)	0.31
Dividend Yield	3.38%
Dividend Growth	-6.17%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	9.18
YTD Return	-2.66%
1-Year Return	-2.44%
5-Year Return	-6.23%
52-Week Low	9.12
52-Week High	9.78
Beta (5Y)	0.12
Holdings	1077
Inception Date	Dec 29, 2000

About MRBBX

MFS Total Return Bond Fund Class B is an open-ended mutual fund designed to provide investors with a balance of current income and capital appreciation through a diversified portfolio of fixed income securities. The fund employs a core-plus strategy, investing at least 80% of its assets in a broad range of bonds, including U.S. government, investment-grade corporate, and securitized debt, while retaining flexibility to allocate to high-yield or emerging market securities as opportunities arise. Managed by an experienced team that has received strong ratings for their investment process and expertise, the fund seeks to outperform standard bond benchmarks such as the Bloomberg U.S. Aggregate Bond Index. Its holdings are actively selected using a research-driven approach, aiming for consistent returns while managing interest rate and credit risk typical for the intermediate core-plus bond category. The fund plays a significant role for investors seeking diversified fixed income exposure within their portfolios, offering a mix of stability, income potential, and modest growth opportunities.

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

Performance

MRBBX had a total return of -2.44% in the past year, including dividends. Since the fund's inception, the average annual return has been 3.07%.

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	$0.02766	Oct 1, 2026
Aug 31, 2026	$0.0262	Sep 1, 2026
Jul 31, 2026	$0.0261	Aug 3, 2026
Jun 30, 2026	$0.02513	Jul 1, 2026
May 29, 2026	$0.02508	Jun 1, 2026
Apr 30, 2026	$0.02357	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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