MIUCX — MFS Municipal Intermediate Fund
Data updated: 2026-06-11
MIUCX — MFS Municipal Intermediate Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $385.94M AUM · 1.45% expense ratio · 4.0% 1-yr return. From SEC regulatory filings.
MIUCX Fund Overview
MIUCX — MFS Municipal Intermediate 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: $385.94M
- 1-year return: 4.0%
- Ticker: MIUCX
- SEC CIK: 0000751656
- SEC series ID: S000071695
- Share class ID: C000227169
MIUCX Holdings
Top 10 holdings of MFS Municipal Intermediate Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| MFS Institutional Money Market Portfolio | 1.57% |
| Central Texas Regional Mobility Authority | 0.58% |
| Black Belt Energy Gas District | 0.52% |
| Massachusetts Development Finance Agency | 0.49% |
| California Community Choice Financing Authority | 0.47% |
| Vermont Student Assistance Corp. | 0.47% |
| Park Creek Metropolitan District | 0.46% |
| Harris County Cultural Education Facilities Finance Corp. | 0.44% |
| California Health Facilities Financing Authority | 0.44% |
| Illinois Finance Authority | 0.43% |
MIUCX Portfolio Allocation
Asset-class allocation of MFS Municipal Intermediate Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.3% |
| Cash & Equivalents | 1.6% |
| Securitized | 0.2% |
MIUCX Performance
Total returns for MIUCX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.3% |
| 1 year | 4.0% |
| 3 years (annualised) | 2.9% |
| 5 years (annualised) | 0.5% |
MIUCX Risk Information
Risk metrics for MIUCX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.7%
MIUCX Costs and Fees
MIUCX costs about $145 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.45%
- Gross expense ratio: 1.59%
- Portfolio turnover: 18%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
MIUCX Cashflows
Over the 12 months to 2026-03, MFS Municipal Intermediate Fund had net inflows of $139.94M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $8.82M |
| 2026-02 | $9.25M |
| 2026-01 | $10.11M |
| 2025-12 | $15.43M |
| 2025-11 | $11.62M |
| 2025-10 | $11.09M |
MIUCX Debt Constituents
Largest debt holdings of MFS Municipal Intermediate Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Central Texas Regional Mobility Authority | 0.58% |
| Black Belt Energy Gas District | 0.52% |
| Massachusetts Development Finance Agency | 0.49% |
| California Community Choice Financing Authority | 0.47% |
| Vermont Student Assistance Corp. | 0.47% |
| Park Creek Metropolitan District | 0.46% |
| Harris County Cultural Education Facilities Finance Corp. | 0.44% |
| California Health Facilities Financing Authority | 0.44% |
| Illinois Finance Authority | 0.43% |
| Black Belt Energy Gas District | 0.43% |
MIUCX Prospectus and SEC Filings
Official MFS Municipal Intermediate 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.