MIOBX Mutual Fund

MIOBX Mutual Fund

NAV$5.68
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Fund Essentials - as of Aug 31, 2026

Net Assets
$276,350.42
Expense Ratio
1.48%
Dividend Yield (Current)
3.78%
Holdings
545
Inception Date
Sep 7, 1993
Fund Family
MFS Investment Management
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD-1.43%
1 Year-1.13%
3 Year+5.17%
5 Year-0.43%
10 Year+1.58%

Asset Allocation

Bonds: 85.02%
Cash: 1.42%
Other: 13.56%
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Top Holdings

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TickerNameWeight
-2 Year Treasury Note Future Dec 2610.47%
-5 Year Treasury Note Future Dec 263.21%
T 4.5 02/15/44U.S. Treasury Bonds2.42%
T 4.875 08/15/45United States Treasury Note/Bond 4.88 08/15/20452.36%
T 4.75 11/15/43Us Treas Bds 4.75% 11/15/431.98%
Top 10 Concentration: 28.15%Report Date: Aug 31, 2026
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Dividend Summary

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Dividend Yield (Current)
3.78%
Frequency
Monthly
Latest Distribution
$0.01
-

Peer Comparison

Benchmark
PRO
Peer outperformance: PRO
Category rank: PRO
This Mutual Fund
PRO
Peer Avg
PRO

MIOBX Mutual Fund Overview

MIOBX Mutual Fund (MFS Income Fund Class B) is managed by MFS Investment Management with $276,350.42 in net assets. MIOBX expense ratio is 1.48%, holding 545 positions across sectors including Financials, Industrials, Real Estate. Inception date: 1993-09-07.

MIOBX performance shows a YTD return of -1.43%. The 1-year return is -1.13% and the 5-year return is -0.43%. MIOBX dividend yield stands at 3.78%, paid monthly.

MIOBX top holdings include 2 Year Treasury Note Future Dec 26 (10.5%), 5 Year Treasury Note Future Dec 26 (3.2%), U.S. Treasury Bonds (2.4%), United States Treasury Note/Bond 4.88 08/15/2045 (2.4%), Us Treas Bds 4.75% 11/15/43 (2.0%). Go to all MIOBX holdings, MIOBX sectors, or MIOBX dividends.

MIOBX can be compared against other funds. Use MIOBX overlap to find shared positions, or MIOBX vs another fund for a side-by-side view. MIOBX alternatives are available via the screener, along with tax-loss harvesting opportunities.