FMSXX — Fidelity Massachusetts Municipal Money Market Fund
Data updated: 2026-04-13
FMSXX — Fidelity Massachusetts Municipal Money Market Fund. Money Market · 0.30% expense ratio. Holdings, fees, performance and SEC filings.
FMSXX Fund Overview
FMSXX — Fidelity Massachusetts Municipal Money Market Fund is a US mutual fund managed by Fidelity Massachusetts Municipal Trust, categorised as Money Market. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Fidelity Massachusetts Municipal Trust
- Category: Money Market
- Ticker: FMSXX
- SEC CIK: 0000357057
- SEC series ID: S000007113
- Share class ID: C000019442
FMSXX Investment Objective and Strategy
Fidelity Massachusetts Municipal Money Market Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Fidelity Massachusetts Municipal Trust.
Investment objective
The fund seeks as high a level of income, exempt from federal and Massachusetts personal income tax, as is consistent with the preservation of capital and liquidity.
Principal investment strategy
Normally investing in municipal money market securities. Normally investing at least 80% of assets in municipal securities whose interest is exempt from federal and Massachusetts personal income taxes. Potentially investing up to 20% of assets in municipal securities whose interest is subject to Massachusetts personal income tax. Normally not investing in municipal securities whose interest is subject to the federal alternative minimum tax. Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects. Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
FMSXX Holdings
Top 10 holdings of Fidelity Massachusetts Municipal Money Market Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Fidelity Revere Street Trust | 14.14% |
| MA Dept Transn Met Hwy Sys Rev | 3.13% |
| Massachusetts St Hlth & Ed Fac | 2.61% |
| Massachusetts St Hlth & Ed Fac | 2.46% |
| MA Dept Transn Met Hwy Sys Rev | 2.42% |
| Massachusetts St Hlth & Ed Fac | 2.38% |
| MA Dept Transn Met Hwy Sys Rev | 2.15% |
| MA Dept Transn Met Hwy Sys Rev | 2.12% |
| Massachusetts St Dev Fin Agy Rv | 1.65% |
| Ma Dana Farber 2026-Xf3528-Nuv Wf/wf D7 | 1.64% |
FMSXX Costs and Fees
FMSXX costs about $30 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.30%
- Gross expense ratio: 0.30%
FMSXX Debt Constituents
No individual debt constituents are reported in Fidelity Massachusetts Municipal Money Market Fund's latest SEC N-PORT filing.
FMSXX Prospectus and SEC Filings
Official Fidelity Massachusetts Municipal Money Market Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Money Market 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.