MFS Inflation-Adjusted Bond Fund Class I (MIAIX)

Fund Assets	1.49B
Expense Ratio	0.50%
Min. Investment	$0.00
Turnover	38.00%
Dividend (ttm)	0.39
Dividend Yield	4.50%
Dividend Growth	6.65%
Payout Frequency	Quarterly
Ex-Dividend Date	Jun 25, 2026

Previous Close	8.73
YTD Return	-1.01%
1-Year Return	-1.43%
5-Year Return	-2.97%
52-Week Low	8.73
52-Week High	9.28
Beta (5Y)	0.07
Holdings	138
Inception Date	Sep 30, 2003

About MIAIX

MFS Inflation-Adjusted Bond Fund Class I is a mutual fund focused on providing a total return that outpaces inflation over the long term, with particular emphasis on generating current income while also considering opportunities for capital appreciation. The fund primarily invests in U.S. Treasury inflation-protected securities (commonly known as TIPS), as well as inflation-linked bonds from government agencies and select other entities. Through active management of duration and yield curve strategies, the fund aims to enhance performance relative to its benchmark, the Bloomberg U.S. Treasury Inflation Protected Securities Index. This approach makes the fund particularly relevant for investors seeking to preserve purchasing power in inflationary environments. With net assets exceeding $1.4 billion and a history dating back to its inception in 2003, the fund plays a significant role in the fixed income market segment that targets inflation mitigation. It is overseen by an experienced team of portfolio managers and is positioned as a tool for institutional and high-net-worth investors seeking inflation-sensitive fixed income exposure within a diversified portfolio.

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

Performance

MIAIX had a total return of -1.43% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.71%.

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%
MIAAX	A	0.65%
MIAHX	R3	0.75%

Dividend History

Ex-Dividend	Amount	Pay Date
Jun 25, 2026	$0.16205	Jun 26, 2026
Mar 26, 2026	$0.00128	Mar 27, 2026
Dec 11, 2025	$0.12981	Dec 12, 2025
Sep 25, 2025	$0.10085	Sep 26, 2025
Jun 26, 2025	$0.13867	Jun 27, 2025
Mar 25, 2025	$0.03529	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:

Sep 22, 2026

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