MCCAX — MFS California Municipal Bond Fund
Data updated: 2026-06-11
MCCAX — MFS California Municipal Bond Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $788.09M AUM · 1.55% expense ratio · 2.7% 1-yr return. From SEC regulatory filings.
MCCAX Fund Overview
MCCAX — MFS California 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: $788.09M
- 1-year return: 2.7%
- Ticker: MCCAX
- SEC CIK: 0000751656
- SEC series ID: S000002530
- Share class ID: C000006980
MCCAX Holdings
Top 10 holdings of MFS California 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 | 4.21% |
| California Community Choice Financing Authority | 1.19% |
| California Community Choice Financing Authority | 1.02% |
| Los Angeles Housing Authority | 1.00% |
| California Municipal Finance Authority | 1.00% |
| Oakland Unified School District/Alameda County | 0.93% |
| Inglewood Joint Powers Authority | 0.80% |
| Fnma | 0.75% |
| California Health Facilities Financing Authority | 0.73% |
| California Community Choice Financing Authority | 0.69% |
MCCAX Portfolio Allocation
Asset-class allocation of MFS California Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 97.0% |
| Cash & Equivalents | 4.2% |
MCCAX Performance
Total returns for MCCAX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.6% |
| 1 year | 2.7% |
| 3 years (annualised) | 2.2% |
| 5 years (annualised) | -0.4% |
MCCAX Risk Information
Risk metrics for MCCAX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 5.5%
MCCAX Costs and Fees
MCCAX costs about $155 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.55%
- Gross expense ratio: 1.59%
- Portfolio turnover: 10%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
MCCAX Cashflows
Over the 12 months to 2026-03, MFS California Municipal Bond Fund had net inflows of $90.64M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $19.49M |
| 2026-02 | $16.14M |
| 2026-01 | $13.88M |
| 2025-12 | $13.74M |
| 2025-11 | $9.63M |
| 2025-10 | $10.29M |
MCCAX Debt Constituents
Largest debt holdings of MFS California Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| California Community Choice Financing Authority | 1.19% |
| California Community Choice Financing Authority | 1.02% |
| Los Angeles Housing Authority | 1.00% |
| California Municipal Finance Authority | 1.00% |
| Oakland Unified School District/Alameda County | 0.93% |
| Inglewood Joint Powers Authority | 0.80% |
| Fnma | 0.75% |
| California Health Facilities Financing Authority | 0.73% |
| California Community Choice Financing Authority | 0.69% |
| San Francisco City & County Airport Comm-San Francisco International Airport | 0.68% |
MCCAX Prospectus and SEC Filings
Official MFS California 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.