MFS Inflation-Adjusted Bond Fund Class I (MIAIX)

NASDAQ · Mutual Fund · Delayed Price · Currency is USD
9.02
-0.01 (-0.11%)
At close: Dec 26, 2025
1.81%
Fund Assets1.54B
Expense Ratio0.49%
Min. Investment$0.00
Turnover27.00%
Dividend (ttm)0.40
Dividend Yield4.49%
Dividend Growth11.53%
Payout FrequencyQuarterly
Ex-Dividend DateDec 11, 2025
Previous Close9.03
YTD Return6.42%
1-Year Return6.42%
5-Year Return2.42%
52-Week Low8.44
52-Week High9.12
Beta (5Y)n/a
Holdings99
Inception DateSep 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 6.42% in the past year, including dividends. Since the fund's inception, the average annual return has been 6.40%.

Equivalent Funds

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

SymbolProviderNameExpense Ratio
SWRSXSchwabSchwab Treasury Inflation Protected Securities Index Fund0.05%
VIPSXVanguardVanguard Inflation-Protected Securities Fund Investor Shares0.20%
FIPDXFidelityFidelity Inflation-Protected Bond Index Fund0.05%

Other Share Classes

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

SymbolShare ClassExpense Ratio
MIAKXR60.41%
MIAJXR40.49%
MIAAXA0.64%
MIAHXR30.74%

Top 10 Holdings

69.61% of assets
NameSymbolWeight
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.0.125 01.15.3112.14%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.0.125 07.15.3011.00%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.1.75 01.15.347.44%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.0.875 01.15.297.29%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.0.125 01.15.326.17%
United States Treasury - U.S. Treasury Inflation-Indexed BondsTII.0.75 02.15.426.07%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.0.375 07.15.275.71%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.1.125 01.15.334.77%
United States Treasury - U.S. Treasury Inflation-Indexed BondsTII.3.625 04.15.284.60%
United States Treasury - U.S. Treasury Inflation-Indexed NotesTII.1.375 07.15.334.41%
View More Holdings

Dividend History

Ex-DividendAmountPay Date
Dec 11, 2025$0.12981Dec 12, 2025
Sep 25, 2025$0.10085Sep 26, 2025
Jun 26, 2025$0.13867Jun 27, 2025
Mar 25, 2025$0.03529Mar 26, 2025
Dec 12, 2024$0.12384Dec 13, 2024
Sep 26, 2024$0.07164Sep 27, 2024
Full Dividend History