MFS Corporate Bond Fund Class I (MBDIX)

Fund Assets	4.15B
Expense Ratio	0.50%
Min. Investment	$1,000
Turnover	41.00%
Dividend (ttm)	0.58
Dividend Yield	4.96%
Dividend Growth	-1.58%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	11.75
YTD Return	-2.62%
1-Year Return	-2.06%
5-Year Return	-3.75%
52-Week Low	11.72
52-Week High	12.72
Beta (5Y)	0.21
Holdings	427
Inception Date	May 8, 1974

About MBDIX

MFS Corporate Bond Fund Class I is a mutual fund designed to provide investors with total return, placing a strong emphasis on current income while also considering capital appreciation. The fund primarily invests in a diversified portfolio of corporate bonds, with at least 80% of its net assets typically allocated to fixed income securities issued by corporations with solid or improving fundamentals. It differentiates itself by focusing on credit quality rather than duration to enhance value, and employs a combination of fundamental and quantitative risk management techniques, including both micro- and macroeconomic analysis. The majority of its holdings are investment-grade corporate bonds, complemented by allocations to U.S. Treasuries, high-yield corporates, and select exposures to emerging market debt, securitized assets, and cash equivalents. The fund uses the Bloomberg U.S. Credit Bond Index as its primary benchmark, reflecting its alignment with the broader corporate credit market. This fund plays a significant role for investors seeking diversified credit exposure and income generation within the fixed income sector of the financial markets, underpinned by a disciplined approach to risk and fundamental analysis.

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

Performance

MBDIX had a total return of -2.06% in the past year, including dividends. Since the fund's inception, the average annual return has been 4.82%.

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
MFBKX	R6	0.41%
MFBJX	R4	0.50%
MFBFX	A	0.75%
MFBHX	R3	0.75%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 30, 2026	$0.04999	Oct 1, 2026
Aug 31, 2026	$0.04859	Sep 1, 2026
Jul 31, 2026	$0.0486	Aug 3, 2026
Jun 30, 2026	$0.04758	Jul 1, 2026
May 29, 2026	$0.04757	Jun 1, 2026
Apr 30, 2026	$0.04549	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 9, 2026

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