MFSMX — MFS Maryland Municipal Bond Fund
Data updated: 2026-06-11
MFSMX — MFS Maryland Municipal Bond Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $157.18M AUM · 0.85% expense ratio · 3.8% 1-yr return. From SEC regulatory filings.
MFSMX Fund Overview
MFSMX — MFS Maryland Municipal Bond Fund is a US mutual fund managed by Mfs Municipal Series Trust, categorised as Long Municipal - National Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Mfs Municipal Series Trust
- Category: Long Municipal - National Bond
- Assets under management: $157.18M
- 1-year return: 3.8%
- Ticker: MFSMX
- SEC CIK: 0000751656
- SEC series ID: S000002533
- Share class ID: C000006985
MFSMX Holdings
Top 10 holdings of MFS Maryland Municipal Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| MFS Institutional Money Market Portfolio | 3.26% |
| Maryland Economic Development Corp. | 1.31% |
| Maryland Economic Development Corp. | 1.24% |
| County of Montgomery MD | 1.21% |
| Maryland Stadium Authority | 1.14% |
| Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue | 1.10% |
| County of Prince George's MD | 1.02% |
| Washington Metropolitan Area Transit Authority Dedicated Revenue | 1.02% |
| Maryland Stadium Authority | 1.00% |
| County of Anne Arundel MD | 0.99% |
MFSMX Portfolio Allocation
Asset-class allocation of MFS Maryland Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 93.7% |
| Cash & Equivalents | 3.3% |
| Other | 2.1% |
MFSMX Performance
Total returns for MFSMX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.4% |
| 1 year | 3.8% |
| 3 years (annualised) | 3.0% |
| 5 years (annualised) | 0.7% |
MFSMX Risk Information
Risk metrics for MFSMX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.6%
MFSMX Costs and Fees
MFSMX costs about $85 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.85%
- Gross expense ratio: 1.01%
- Portfolio turnover: 9%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
MFSMX Cashflows
Over the 12 months to 2026-03, MFS Maryland Municipal Bond Fund had net inflows of $20.26M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $1.38M |
| 2026-02 | $528.37K |
| 2026-01 | $1.83M |
| 2025-12 | $1.46M |
| 2025-11 | $1.84M |
| 2025-10 | $743.06K |
MFSMX Debt Constituents
Largest debt holdings of MFS Maryland Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Maryland Economic Development Corp. | 1.31% |
| Maryland Economic Development Corp. | 1.24% |
| Maryland Stadium Authority | 1.14% |
| Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue | 1.10% |
| County of Prince George's MD | 1.02% |
| Washington Metropolitan Area Transit Authority Dedicated Revenue | 1.02% |
| Maryland Stadium Authority | 1.00% |
| County of Anne Arundel MD | 0.99% |
| Maryland Health & Higher Educational Facilities Authority | 0.99% |
| Maryland Health & Higher Educational Facilities Authority | 0.99% |
MFSMX Prospectus and SEC Filings
Official MFS Maryland Municipal Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Municipal - National Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.