MFS Corporate Bond R6 (MFBKX)

Fund Assets	4.15B
Expense Ratio	0.41%
Min. Investment	$1,000
Turnover	41.00%
Dividend (ttm)	0.60
Dividend Yield	5.06%
Dividend Growth	-1.50%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	11.75
YTD Return	-2.55%
1-Year Return	-1.97%
5-Year Return	-2.31%
52-Week Low	11.72
52-Week High	12.72
Beta (5Y)	0.21
Holdings	427
Inception Date	Jun 1, 2012

About MFBKX

MFS Corporate Bond Fund Class R6 is an open-end mutual fund focused on corporate debt securities. Its primary objective is to achieve total return, with an emphasis on generating current income while also considering capital appreciation. The fund invests at least 80% of its assets in investment-grade corporate bonds, but also has allocations to below investment-grade bonds, U.S. Treasuries, foreign securities, and other fixed-income assets. This diversified approach allows for broad sector exposure and risk management through both fundamental and quantitative analysis. The fund’s portfolio typically features a high proportion of investment-grade corporates, complemented by smaller allocations to high yield, emerging market debt, and various types of asset-backed securities. MFS Corporate Bond Fund Class R6 serves institutional or retirement accounts by offering R6 share class benefits such as lower expense ratios and no sales charges, making it appealing for cost-conscious investors. Its significance in the market derives from its role as a stable fixed-income option, designed to provide income and diversification within broader portfolios, especially for investors seeking consistent monthly distributions from a robust pool of high-quality debt instruments.

• Fund Family: MFS
• Category: Corporate Bond
• Performance Rating: Above Average
• Risk Rating: Average
• Stock Exchange: Nasdaq
• Ticker Symbol: MFBKX
• Share Class: R6
• Index: Bloomberg U.S. Credit TR

Performance

MFBKX had a total return of -1.97% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.70%.

Equivalent Funds

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

Symbol	Provider	Name	Expense Ratio
FIKOX	Fidelity	Fidelity Advisor Corporate Bond Z	0.36%
FCCCX	Fidelity	Fidelity Advisor Corporate Bond C	1.54%
FCBAX	Fidelity	Fidelity Advisor Corporate Bond A	0.77%
FCBTX	Fidelity	Fidelity Advisor Corporate Bond M	0.82%
FCBIX	Fidelity	Fidelity Advisor Corporate Bond I	0.50%

Other Share Classes

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

Symbol	Share Class	Expense Ratio
MFBJX	R4	0.50%
MBDIX	I	0.50%
MFBFX	A	0.75%
MFBHX	R3	0.75%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 30, 2026	$0.05095	Oct 1, 2026
Aug 31, 2026	$0.04957	Sep 1, 2026
Jul 31, 2026	$0.04957	Aug 3, 2026
Jun 30, 2026	$0.04857	Jul 1, 2026
May 29, 2026	$0.04857	Jun 1, 2026
Apr 30, 2026	$0.0465	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 10, 2026

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