BNTXX — Tax-Free Money Market Fund
Data updated: 2026-07-31
BNTXX — Tax-Free Money Market Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Money Market · 0.49% expense ratio. From SEC regulatory filings.
BNTXX Fund Overview
BNTXX — Tax-Free Money Market Fund is a US mutual fund managed by American Century 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: American Century Municipal Trust
- Category: Money Market
- Ticker: BNTXX
- SEC CIK: 0000746458
- SEC series ID: S000006473
- Share class ID: C000017692
BNTXX Holdings
Top 10 holdings of Tax-Free Money Market Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Deutsche Bank Spears/Lifers Trust | 4.50% |
| St. Paul Port Authority | 3.89% |
| Illinois Housing Development Authority | 2.88% |
| Tender Option Bond Trust Receipts/Certificates | 2.78% |
| South Carolina State Housing Finance & Development Authority | 2.70% |
| County of Hillsborough FL | 2.67% |
| Louisiana Housing Corp. | 2.62% |
| Tender Option Bond Trust Receipts/Certificates | 2.60% |
| Louisiana State Local Government Environmental Facilities & Community Development Authority | 2.33% |
| Tender Option Bond Trust Receipts/Certificates | 2.22% |
BNTXX Costs and Fees
BNTXX costs about $49 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.49%
- Gross expense ratio: 0.49%
BNTXX Debt Constituents
No individual debt constituents are reported in Tax-Free Money Market Fund's latest SEC N-PORT filing.
BNTXX Prospectus and SEC Filings
Official Tax-Free 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.