MFS Inflation-Adjusted Bond Fund Class A (MIAAX)

Fund Assets	1.43B
Expense Ratio	0.663%
Min. Investment	$1,000
Turnover	38.00%
Dividend (ttm)	0.37
Dividend Yield	4.32%
Dividend Growth	-3.75%
Payout Frequency	Quarterly
Ex-Dividend Date	Sep 24, 2026

Previous Close	8.54
YTD Return	-2.35%
1-Year Return	-3.03%
5-Year Return	-4.28%
52-Week Low	8.51
52-Week High	9.24
Beta (5Y)	0.08
Holdings	140
Inception Date	Sep 30, 2003

About MIAAX

The MFS Inflation-Adjusted Bond Fund Class A is a mutual fund that primarily invests in inflation-protected, investment-grade debt securities issued by the U.S. Treasury and other U.S. government-related entities. Its primary objective is to achieve a total return that exceeds the rate of inflation over the long term, offering both current income and the potential for modest capital appreciation. This fund targets investors who are seeking to preserve purchasing power in environments where inflation could erode fixed-income returns, making it particularly relevant for long-term savers and conservative portfolios. The fund manages risk and return through active duration and yield curve strategies, with a diversified portfolio concentrated in U.S. government securities. Notable features include a quarterly dividend payout, a competitive distribution yield, and a history dating back to 2003. The fund is benchmarked to the Bloomberg U.S. Treasury Inflation Protected Securities Index, underscoring its focus on inflation mitigation within the broader fixed-income landscape. Overall, the MFS Inflation-Adjusted Bond Fund Class A plays a specialized role, offering inflation-sensitive fixed-income exposure that complements traditional bond allocations.

• Fund Family: MFS
• Category: Inflation-Protected Bond
• Performance Rating: Below Average
• Risk Rating: Average
• Stock Exchange: Nasdaq
• Ticker Symbol: MIAAX
• Share Class: A
• Index: Bloomberg U.S. TIPS TR

Performance

MIAAX had a total return of -3.03% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.60%.

Equivalent Funds

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

Symbol	Provider	Name	Expense Ratio
SWRSX	Schwab	Schwab Treasury Inflation Protected Securities Index Fund	0.05%
VIPSX	Vanguard	Vanguard Inflation-Protected Securities Fund Investor Shares	0.20%
FIPDX	Fidelity	Fidelity Inflation-Protected Bond Index Fund	0.05%

Other Share Classes

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

Symbol	Share Class	Expense Ratio
MIAKX	R6	0.41%
MIAJX	R4	0.50%
MIAIX	I	0.50%
MIAHX	R3	0.75%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 24, 2026	$0.08522	Sep 25, 2026
Jun 25, 2026	$0.1585	Jun 26, 2026
Dec 11, 2025	$0.126	Dec 12, 2025
Sep 25, 2025	$0.09714	Sep 26, 2025
Jun 26, 2025	$0.13509	Jun 27, 2025
Mar 25, 2025	$0.03135	Mar 26, 2025

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 13, 2026

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