ETF · holdings as filed 2026-06-30

What's inside MBMDX?

MFS Maryland Municipal Bond Fund
Holdings
236
positions in the fund
Top 10
12%
of fund assets
Expense ratio
1.60%
net, per year
Fund size
$162M
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
?
—MFS Institutional Money Market Portfolio
1.73%
2
BOND
Maryland Econ Dev-A
1.32%
3
BOND
Md Econ Dev
1.26%
4
BOND
Pr Sales Tax Fing-A1
1.14%
5
BOND
Maryland St Stadium
1.12%
6
BOND
Prince George Co-A
1.03%
7
BOND
Washington Met Area-A
1.02%
8
BOND
Md Hlth & Hgr Edl-A
1.00%
9
BOND
Maryland Stadium Auth
1.00%
10
BOND
Anne Arundel
1.00%
11
BOND
Md Hlth Hgr Auth-A
0.99%
12
BOND
Md Cmnty Dev-F-1
0.98%
13
BOND
Prince Georges
0.96%
14
BOND
Wa Suburban San Dt
0.95%
15
BOND
Maryland Stadium Auth
0.95%
16
BOND
Baltimore Cnty Md
0.94%
17
BOND
Howard Co-C
0.93%
18
BOND
Maryland St Cmnty Dev
0.92%
19
BOND
Maryland Hlth & Hgr
0.90%
20
BOND
Baltimore -A-Wtr Proj
0.90%
Sectors tap a row to see its top 10 holdings
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
BOND
Maryland Econ Dev-A
1.32%
2
BOND
Md Econ Dev
1.26%
3
BOND
Pr Sales Tax Fing-A1
1.14%
4
BOND
Maryland St Stadium
1.12%
5
BOND
Prince George Co-A
1.03%
6
BOND
Washington Met Area-A
1.02%
7
BOND
Md Hlth & Hgr Edl-A
1.00%
8
BOND
Maryland Stadium Auth
1.00%
9
BOND
Anne Arundel
1.00%
10
BOND
Md Hlth Hgr Auth-A
0.99%
Geography tap a row to see its top 10 holdings
Top holdings — United States
Your 10 largest positions in this country
1
BOND
Maryland Econ Dev-A
1.32%
2
BOND
Md Econ Dev
1.26%
3
BOND
Pr Sales Tax Fing-A1
1.14%
4
BOND
Maryland St Stadium
1.12%
5
BOND
Prince George Co-A
1.03%
6
BOND
Washington Met Area-A
1.02%
7
BOND
Md Hlth & Hgr Edl-A
1.00%
8
BOND
Maryland Stadium Auth
1.00%
9
BOND
Anne Arundel
1.00%
10
BOND
Md Hlth Hgr Auth-A
0.99%
Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-06-30); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.