MFS Inflation-Adjusted Bond Fund Class R6 (MIAKX)

Fund Assets	1.49B
Expense Ratio	0.41%
Min. Investment	$0.00
Turnover	38.00%
Dividend (ttm)	0.40
Dividend Yield	4.52%
Dividend Growth	7.10%
Payout Frequency	Quarterly
Ex-Dividend Date	Jun 25, 2026

Previous Close	8.89
YTD Return	0.26%
1-Year Return	1.18%
5-Year Return	-0.75%
52-Week Low	8.87
52-Week High	9.36
Beta (5Y)	0.07
Holdings	131
Inception Date	Mar 1, 2013

About MIAKX

MFS Inflation-Adjusted Bond Fund R6 is a mutual fund designed to provide investors with returns that exceed the long-term rate of inflation, emphasizing current income while also considering capital appreciation. The fund primarily invests in inflation-protected securities—most notably U.S. Treasury Inflation-Protected Securities (TIPS)—as well as similar debt instruments issued by government agencies and select entities. By focusing on these assets, the fund aims to help preserve purchasing power in environments where inflation may erode fixed income returns. Management employs active strategies around duration and yield curve positioning in order to optimize performance relative to its benchmark, the Bloomberg U.S. Treasury Inflation Protected Securities Index. With over 100 holdings and a sizeable asset base, the fund plays a significant role for institutional and individual investors seeking to mitigate inflation risk within their fixed income allocation. Typically, this fund appeals to those seeking inflation resilience in their portfolios, while maintaining exposure to high-quality government-backed securities.

• Fund Family: MFS
• Category: Inflation-Protected Bond
• Performance Rating: Below Average
• Risk Rating: Average
• Stock Exchange: NASDAQ
• Ticker Symbol: MIAKX
• Share Class: R6
• Index: Bloomberg U.S. TIPS TR

Performance

MIAKX had a total return of 1.18% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.04%.

Equivalent Funds

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

Symbol	Provider	Name	Expense Ratio
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
MIAJX	R4	0.50%
MIAIX	I	0.50%
MIAAX	A	0.65%
MIAHX	R3	0.75%

Dividend History

Ex-Dividend	Amount	Pay Date
Jun 25, 2026	$0.16418	Jun 26, 2026
Mar 26, 2026	$0.00314	Mar 27, 2026
Dec 11, 2025	$0.13257	Dec 12, 2025
Sep 25, 2025	$0.10273	Sep 26, 2025
Jun 26, 2025	$0.14049	Jun 27, 2025
Mar 25, 2025	$0.0359	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:

Aug 10, 2026

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