ECMBX — Eaton Vance AMT-Free Municipal Income Fund
Data updated: 2026-06-25
ECMBX — Eaton Vance AMT-Free Municipal Income Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $173.96M AUM · 1.58% expense ratio · 2.4% 1-yr return. From SEC regulatory filings.
ECMBX Fund Overview
ECMBX — Eaton Vance AMT-Free Municipal Income Fund is a US mutual fund managed by Eaton Vance Mutual Funds 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: Eaton Vance Mutual Funds Trust
- Category: Long Municipal - National Bond
- Assets under management: $173.96M
- 1-year return: 2.4%
- Ticker: ECMBX
- SEC CIK: 0000745463
- SEC series ID: S000005300
- Share class ID: C000038314
ECMBX Holdings
Top 10 holdings of Eaton Vance AMT-Free Municipal Income Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Pennsylvania Turnpike Commission | 6.61% |
| Anaheim Public Financing Authority | 4.25% |
| Harris County-Houston Sports Authority | 4.00% |
| Commonwealth of Massachusetts | 3.52% |
| New Jersey Economic Development Authority | 2.40% |
| Metropolitan Pier & Exposition Authority | 2.15% |
| E-470 Public Highway Authority | 2.09% |
| New Jersey Economic Development Authority | 1.84% |
| Delaware State Health Facilities Authority | 1.80% |
| Sherman Independent School District/TX | 1.75% |
ECMBX Portfolio Allocation
Asset-class allocation of Eaton Vance AMT-Free Municipal Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 100.4% |
| Cash & Equivalents | 0.2% |
ECMBX Performance
Total returns for ECMBX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.1% |
| 1 year | 2.4% |
| 3 years (annualised) | 1.8% |
| 5 years (annualised) | -0.7% |
ECMBX Risk Information
Risk metrics for ECMBX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.1%
ECMBX Costs and Fees
ECMBX costs about $158 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.58%
- Gross expense ratio: 1.66%
- Portfolio turnover: 89%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
ECMBX Cashflows
Over the 12 months to 2026-03, Eaton Vance AMT-Free Municipal Income Fund had net outflows of $7.45M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $479.78K |
| 2026-02 | −$274.24K |
| 2026-01 | $3.43M |
| 2025-12 | $1.80M |
| 2025-11 | −$637.16K |
| 2025-10 | −$4.65M |
ECMBX Debt Constituents
Largest debt holdings of Eaton Vance AMT-Free Municipal Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Pennsylvania Turnpike Commission | 6.61% |
| Anaheim Public Financing Authority | 4.25% |
| Harris County-Houston Sports Authority | 4.00% |
| Commonwealth of Massachusetts | 3.52% |
| New Jersey Economic Development Authority | 2.40% |
| Metropolitan Pier & Exposition Authority | 2.15% |
| E-470 Public Highway Authority | 2.09% |
| New Jersey Economic Development Authority | 1.84% |
| Delaware State Health Facilities Authority | 1.80% |
| Sherman Independent School District/TX | 1.75% |
ECMBX Prospectus and SEC Filings
Official Eaton Vance AMT-Free Municipal Income 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.